aba9e5e4f9
both of which allows us to remove 'service name detection' as if systemd is init we still use it to handle initscripts.
1326 lines
49 KiB
Python
1326 lines
49 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: service
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author: Michael DeHaan
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version_added: "0.1"
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short_description: Manage services.
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description:
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- Controls services on remote hosts. Supported init systems include BSD init,
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OpenRC, SysV, systemd, upstart.
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options:
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name:
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required: true
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description:
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- Name of the service.
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state:
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required: false
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choices: [ started, stopped, restarted, reloaded ]
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description:
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- C(started)/C(stopped) are idempotent actions that will not run
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commands unless necessary. C(restarted) will always bounce the
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service. C(reloaded) will always reload. B(At least one of state
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and enabled are required.)
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sleep:
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required: false
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version_added: "1.3"
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description:
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- If the service is being C(restarted) then sleep this many seconds
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between the stop and start command. This helps to workaround badly
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behaving init scripts that exit immediately after signaling a process
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to stop.
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pattern:
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required: false
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version_added: "0.7"
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description:
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- If the service does not respond to the status command, name a
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substring to look for as would be found in the output of the I(ps)
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command as a stand-in for a status result. If the string is found,
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the service will be assumed to be running.
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enabled:
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required: false
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choices: [ "yes", "no" ]
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description:
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- Whether the service should start on boot. B(At least one of state and
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enabled are required.)
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runlevel:
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required: false
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default: 'default'
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description:
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- "For OpenRC init scripts (ex: Gentoo) only. The runlevel that this service belongs to."
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arguments:
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description:
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- Additional arguments provided on the command line
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aliases: [ 'args' ]
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'''
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EXAMPLES = '''
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# Example action to start service httpd, if not running
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- service: name=httpd state=started
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# Example action to stop service httpd, if running
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- service: name=httpd state=stopped
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# Example action to restart service httpd, in all cases
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- service: name=httpd state=restarted
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# Example action to reload service httpd, in all cases
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- service: name=httpd state=reloaded
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# Example action to enable service httpd, and not touch the running state
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- service: name=httpd enabled=yes
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# Example action to start service foo, based on running process /usr/bin/foo
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- service: name=foo pattern=/usr/bin/foo state=started
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# Example action to restart network service for interface eth0
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- service: name=network state=restarted args=eth0
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'''
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import platform
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import os
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import re
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import tempfile
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import shlex
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import select
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import time
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import string
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from distutils.version import LooseVersion
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class Service(object):
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"""
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This is the generic Service manipulation class that is subclassed
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based on platform.
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A subclass should override the following action methods:-
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- get_service_tools
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- service_enable
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- get_service_status
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- service_control
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All subclasses MUST define platform and distribution (which may be None).
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"""
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platform = 'Generic'
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distribution = None
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def __new__(cls, *args, **kwargs):
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return load_platform_subclass(Service, args, kwargs)
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def __init__(self, module):
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self.module = module
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self.name = module.params['name']
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self.state = module.params['state']
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self.sleep = module.params['sleep']
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self.pattern = module.params['pattern']
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self.enable = module.params['enabled']
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self.runlevel = module.params['runlevel']
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self.changed = False
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self.running = None
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self.crashed = None
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self.action = None
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self.svc_cmd = None
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self.svc_initscript = None
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self.svc_initctl = None
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self.enable_cmd = None
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self.arguments = module.params.get('arguments', '')
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self.rcconf_file = None
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self.rcconf_key = None
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self.rcconf_value = None
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self.svc_change = False
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# select whether we dump additional debug info through syslog
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self.syslogging = False
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# ===========================================
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# Platform specific methods (must be replaced by subclass).
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def get_service_tools(self):
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self.module.fail_json(msg="get_service_tools not implemented on target platform")
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def service_enable(self):
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self.module.fail_json(msg="service_enable not implemented on target platform")
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def get_service_status(self):
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self.module.fail_json(msg="get_service_status not implemented on target platform")
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def service_control(self):
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self.module.fail_json(msg="service_control not implemented on target platform")
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# ===========================================
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# Generic methods that should be used on all platforms.
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def execute_command(self, cmd, daemonize=False):
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if self.syslogging:
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syslog.openlog('ansible-%s' % os.path.basename(__file__))
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syslog.syslog(syslog.LOG_NOTICE, 'Command %s, daemonize %r' % (cmd, daemonize))
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# Most things don't need to be daemonized
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if not daemonize:
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return self.module.run_command(cmd)
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# This is complex because daemonization is hard for people.
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# What we do is daemonize a part of this module, the daemon runs the
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# command, picks up the return code and output, and returns it to the
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# main process.
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pipe = os.pipe()
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pid = os.fork()
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if pid == 0:
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os.close(pipe[0])
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# Set stdin/stdout/stderr to /dev/null
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fd = os.open(os.devnull, os.O_RDWR)
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if fd != 0:
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os.dup2(fd, 0)
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if fd != 1:
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os.dup2(fd, 1)
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if fd != 2:
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os.dup2(fd, 2)
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if fd not in (0, 1, 2):
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os.close(fd)
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# Make us a daemon. Yes, that's all it takes.
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pid = os.fork()
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if pid > 0:
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os._exit(0)
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os.setsid()
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os.chdir("/")
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pid = os.fork()
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if pid > 0:
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os._exit(0)
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# Start the command
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if isinstance(cmd, basestring):
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cmd = shlex.split(cmd)
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p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=lambda: os.close(pipe[1]))
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stdout = ""
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stderr = ""
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fds = [p.stdout, p.stderr]
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# Wait for all output, or until the main process is dead and its output is done.
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while fds:
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rfd, wfd, efd = select.select(fds, [], fds, 1)
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if not (rfd + wfd + efd) and p.poll() is not None:
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break
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if p.stdout in rfd:
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dat = os.read(p.stdout.fileno(), 4096)
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if not dat:
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fds.remove(p.stdout)
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stdout += dat
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if p.stderr in rfd:
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dat = os.read(p.stderr.fileno(), 4096)
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if not dat:
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fds.remove(p.stderr)
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stderr += dat
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p.wait()
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# Return a JSON blob to parent
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os.write(pipe[1], json.dumps([p.returncode, stdout, stderr]))
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os.close(pipe[1])
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os._exit(0)
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elif pid == -1:
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self.module.fail_json(msg="unable to fork")
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else:
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os.close(pipe[1])
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os.waitpid(pid, 0)
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# Wait for data from daemon process and process it.
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data = ""
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while True:
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rfd, wfd, efd = select.select([pipe[0]], [], [pipe[0]])
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if pipe[0] in rfd:
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dat = os.read(pipe[0], 4096)
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if not dat:
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break
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data += dat
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return json.loads(data)
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def check_ps(self):
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# Set ps flags
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if platform.system() == 'SunOS':
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psflags = '-ef'
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else:
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psflags = 'auxww'
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# Find ps binary
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psbin = self.module.get_bin_path('ps', True)
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(rc, psout, pserr) = self.execute_command('%s %s' % (psbin, psflags))
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# If rc is 0, set running as appropriate
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if rc == 0:
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self.running = False
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lines = psout.split("\n")
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for line in lines:
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if self.pattern in line and not "pattern=" in line:
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# so as to not confuse ./hacking/test-module
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self.running = True
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break
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def check_service_changed(self):
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if self.state and self.running is None:
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self.module.fail_json(msg="failed determining service state, possible typo of service name?")
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# Find out if state has changed
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if not self.running and self.state in ["started", "running", "reloaded"]:
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self.svc_change = True
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elif self.running and self.state in ["stopped","reloaded"]:
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self.svc_change = True
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elif self.state == "restarted":
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self.svc_change = True
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if self.module.check_mode and self.svc_change:
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self.module.exit_json(changed=True, msg='service state changed')
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def modify_service_state(self):
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# Only do something if state will change
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if self.svc_change:
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# Control service
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if self.state in ['started', 'running']:
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self.action = "start"
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elif not self.running and self.state == 'reloaded':
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self.action = "start"
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elif self.state == 'stopped':
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self.action = "stop"
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elif self.state == 'reloaded':
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self.action = "reload"
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elif self.state == 'restarted':
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self.action = "restart"
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if self.module.check_mode:
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self.module.exit_json(changed=True, msg='changing service state')
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return self.service_control()
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else:
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# If nothing needs to change just say all is well
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rc = 0
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err = ''
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out = ''
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return rc, out, err
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def service_enable_rcconf(self):
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if self.rcconf_file is None or self.rcconf_key is None or self.rcconf_value is None:
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self.module.fail_json(msg="service_enable_rcconf() requires rcconf_file, rcconf_key and rcconf_value")
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self.changed = None
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entry = '%s="%s"\n' % (self.rcconf_key, self.rcconf_value)
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RCFILE = open(self.rcconf_file, "r")
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new_rc_conf = []
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# Build a list containing the possibly modified file.
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for rcline in RCFILE:
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# Parse line removing whitespaces, quotes, etc.
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rcarray = shlex.split(rcline, comments=True)
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if len(rcarray) >= 1 and '=' in rcarray[0]:
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(key, value) = rcarray[0].split("=", 1)
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if key == self.rcconf_key:
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if value.upper() == self.rcconf_value:
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# Since the proper entry already exists we can stop iterating.
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self.changed = False
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break
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else:
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# We found the key but the value is wrong, replace with new entry.
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rcline = entry
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self.changed = True
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# Add line to the list.
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new_rc_conf.append(rcline)
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# We are done with reading the current rc.conf, close it.
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RCFILE.close()
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# If we did not see any trace of our entry we need to add it.
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if self.changed is None:
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new_rc_conf.append(entry)
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self.changed = True
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if self.changed is True:
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if self.module.check_mode:
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self.module.exit_json(changed=True, msg="changing service enablement")
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# Create a temporary file next to the current rc.conf (so we stay on the same filesystem).
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# This way the replacement operation is atomic.
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rcconf_dir = os.path.dirname(self.rcconf_file)
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rcconf_base = os.path.basename(self.rcconf_file)
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(TMP_RCCONF, tmp_rcconf_file) = tempfile.mkstemp(dir=rcconf_dir, prefix="%s-" % rcconf_base)
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# Write out the contents of the list into our temporary file.
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for rcline in new_rc_conf:
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os.write(TMP_RCCONF, rcline)
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# Close temporary file.
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os.close(TMP_RCCONF)
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# Replace previous rc.conf.
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self.module.atomic_move(tmp_rcconf_file, self.rcconf_file)
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# ===========================================
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# Subclass: Linux
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class LinuxService(Service):
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"""
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This is the Linux Service manipulation class - it is currently supporting
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a mixture of binaries and init scripts for controlling services started at
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boot, as well as for controlling the current state.
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"""
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platform = 'Linux'
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distribution = None
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def get_service_tools(self):
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paths = [ '/sbin', '/usr/sbin', '/bin', '/usr/bin' ]
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binaries = [ 'service', 'chkconfig', 'update-rc.d', 'rc-service', 'rc-update', 'initctl', 'systemctl', 'start', 'stop', 'restart' ]
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initpaths = [ '/etc/init.d' ]
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location = dict()
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for binary in binaries:
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location[binary] = self.module.get_bin_path(binary)
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for initdir in initpaths:
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initscript = "%s/%s" % (initdir,self.name)
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if os.path.isfile(initscript):
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self.svc_initscript = initscript
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def check_systemd():
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# verify systemd is installed (by finding systemctl)
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if not location.get('systemctl', False):
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return False
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systemd_enabled = False
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# Check if init is the systemd command, using comm as cmdline could be symlink
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try:
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f = open('/proc/1/comm', 'r')
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except IOError, err:
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# If comm doesn't exist, old kernel, no systemd
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return False
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for line in f:
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if 'systemd' in line:
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return True
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return False
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# Locate a tool to enable/disable a service
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if location.get('systemctl',False) and check_systemd():
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# service is managed by systemd
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self.__systemd_unit = self.name
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self.svc_cmd = location['systemctl']
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self.enable_cmd = location['systemctl']
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elif location.get('initctl', False) and os.path.exists("/etc/init/%s.conf" % self.name):
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# service is managed by upstart
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self.enable_cmd = location['initctl']
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# set the upstart version based on the output of 'initctl version'
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self.upstart_version = LooseVersion('0.0.0')
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try:
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version_re = re.compile(r'\(upstart (.*)\)')
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rc,stdout,stderr = self.module.run_command('initctl version')
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if rc == 0:
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res = version_re.search(stdout)
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if res:
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self.upstart_version = LooseVersion(res.groups()[0])
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except:
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pass # we'll use the default of 0.0.0
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if location.get('start', False):
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# upstart -- rather than being managed by one command, start/stop/restart are actual commands
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self.svc_cmd = ''
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|
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elif location.get('rc-service', False):
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# service is managed by OpenRC
|
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self.svc_cmd = location['rc-service']
|
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self.enable_cmd = location['rc-update']
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return # already have service start/stop tool too!
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elif self.svc_initscript:
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# service is managed by with SysV init scripts
|
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if location.get('update-rc.d', False):
|
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# and uses update-rc.d
|
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self.enable_cmd = location['update-rc.d']
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elif location.get('chkconfig', False):
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# and uses chkconfig
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self.enable_cmd = location['chkconfig']
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|
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if self.enable_cmd is None:
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self.module.fail_json(msg="no service or tool found for: %s" % self.name)
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|
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# If no service control tool selected yet, try to see if 'service' is available
|
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if not self.svc_cmd and location.get('service', False):
|
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self.svc_cmd = location['service']
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# couldn't find anything yet
|
|
if self.svc_cmd is None and not self.svc_initscript:
|
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self.module.fail_json(msg='cannot find \'service\' binary or init script for service, possible typo in service name?, aborting')
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if location.get('initctl', False):
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self.svc_initctl = location['initctl']
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def get_systemd_status_dict(self):
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(rc, out, err) = self.execute_command("%s show %s" % (self.enable_cmd, self.__systemd_unit,))
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if rc != 0:
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self.module.fail_json(msg='failure %d running systemctl show for %r: %s' % (rc, self.__systemd_unit, err))
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key = None
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value_buffer = []
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status_dict = {}
|
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for line in out.splitlines():
|
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if not key:
|
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key, value = line.split('=', 1)
|
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# systemd fields that are shell commands can be multi-line
|
|
# We take a value that begins with a "{" as the start of
|
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# a shell command and a line that ends with "}" as the end of
|
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# the command
|
|
if value.lstrip().startswith('{'):
|
|
if value.rstrip().endswith('}'):
|
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status_dict[key] = value
|
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key = None
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else:
|
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value_buffer.append(value)
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else:
|
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status_dict[key] = value
|
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key = None
|
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else:
|
|
if line.rstrip().endswith('}'):
|
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status_dict[key] = '\n'.join(value_buffer)
|
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key = None
|
|
else:
|
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value_buffer.append(value)
|
|
|
|
return status_dict
|
|
|
|
def get_systemd_service_status(self):
|
|
d = self.get_systemd_status_dict()
|
|
if d.get('ActiveState') == 'active':
|
|
# run-once services (for which a single successful exit indicates
|
|
# that they are running as designed) should not be restarted here.
|
|
# Thus, we are not checking d['SubState'].
|
|
self.running = True
|
|
self.crashed = False
|
|
elif d.get('ActiveState') == 'failed':
|
|
self.running = False
|
|
self.crashed = True
|
|
elif d.get('ActiveState') is None:
|
|
self.module.fail_json(msg='No ActiveState value in systemctl show output for %r' % (self.__systemd_unit,))
|
|
else:
|
|
self.running = False
|
|
self.crashed = False
|
|
return self.running
|
|
|
|
def get_service_status(self):
|
|
if self.svc_cmd and self.svc_cmd.endswith('systemctl'):
|
|
return self.get_systemd_service_status()
|
|
|
|
self.action = "status"
|
|
rc, status_stdout, status_stderr = self.service_control()
|
|
|
|
# if we have decided the service is managed by upstart, we check for some additional output...
|
|
if self.svc_initctl and self.running is None:
|
|
# check the job status by upstart response
|
|
initctl_rc, initctl_status_stdout, initctl_status_stderr = self.execute_command("%s status %s" % (self.svc_initctl, self.name))
|
|
if "stop/waiting" in initctl_status_stdout:
|
|
self.running = False
|
|
elif "start/running" in initctl_status_stdout:
|
|
self.running = True
|
|
|
|
if self.svc_cmd and self.svc_cmd.endswith("rc-service") and self.running is None:
|
|
openrc_rc, openrc_status_stdout, openrc_status_stderr = self.execute_command("%s %s status" % (self.svc_cmd, self.name))
|
|
self.running = "started" in openrc_status_stdout
|
|
self.crashed = "crashed" in openrc_status_stderr
|
|
|
|
# if the job status is still not known check it by status output keywords
|
|
# Only check keywords if there's only one line of output (some init
|
|
# scripts will output verbosely in case of error and those can emit
|
|
# keywords that are picked up as false positives
|
|
if self.running is None and status_stdout.count('\n') <= 1:
|
|
# first transform the status output that could irritate keyword matching
|
|
cleanout = status_stdout.lower().replace(self.name.lower(), '')
|
|
if "stop" in cleanout:
|
|
self.running = False
|
|
elif "run" in cleanout and "not" in cleanout:
|
|
self.running = False
|
|
elif "run" in cleanout and "not" not in cleanout:
|
|
self.running = True
|
|
elif "start" in cleanout and "not" not in cleanout:
|
|
self.running = True
|
|
elif 'could not access pid file' in cleanout:
|
|
self.running = False
|
|
elif 'is dead and pid file exists' in cleanout:
|
|
self.running = False
|
|
elif 'dead but subsys locked' in cleanout:
|
|
self.running = False
|
|
elif 'dead but pid file exists' in cleanout:
|
|
self.running = False
|
|
|
|
# if the job status is still not known check it by response code
|
|
# For reference, see:
|
|
# http://refspecs.linuxbase.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
|
|
if self.running is None:
|
|
if rc in [1, 2, 3, 4, 69]:
|
|
self.running = False
|
|
elif rc == 0:
|
|
self.running = True
|
|
|
|
# if the job status is still not known check it by special conditions
|
|
if self.running is None:
|
|
if self.name == 'iptables' and "ACCEPT" in status_stdout:
|
|
# iptables status command output is lame
|
|
# TODO: lookup if we can use a return code for this instead?
|
|
self.running = True
|
|
|
|
return self.running
|
|
|
|
|
|
def service_enable(self):
|
|
|
|
if self.enable_cmd is None:
|
|
self.module.fail_json(msg='cannot detect command to enable service %s, typo or init system potentially unknown' % self.name)
|
|
|
|
self.changed = True
|
|
action = None
|
|
|
|
#
|
|
# Upstart's initctl
|
|
#
|
|
if self.enable_cmd.endswith("initctl"):
|
|
def write_to_override_file(file_name, file_contents, ):
|
|
override_file = open(file_name, 'w')
|
|
override_file.write(file_contents)
|
|
override_file.close()
|
|
|
|
initpath = '/etc/init'
|
|
if self.upstart_version >= LooseVersion('0.6.7'):
|
|
manreg = re.compile('^manual\s*$', re.M | re.I)
|
|
config_line = 'manual\n'
|
|
else:
|
|
manreg = re.compile('^start on manual\s*$', re.M | re.I)
|
|
config_line = 'start on manual\n'
|
|
conf_file_name = "%s/%s.conf" % (initpath, self.name)
|
|
override_file_name = "%s/%s.override" % (initpath, self.name)
|
|
|
|
# Check to see if files contain the manual line in .conf and fail if True
|
|
if manreg.search(open(conf_file_name).read()):
|
|
self.module.fail_json(msg="manual stanza not supported in a .conf file")
|
|
|
|
self.changed = False
|
|
if os.path.exists(override_file_name):
|
|
override_file_contents = open(override_file_name).read()
|
|
# Remove manual stanza if present and service enabled
|
|
if self.enable and manreg.search(override_file_contents):
|
|
self.changed = True
|
|
override_state = manreg.sub('', override_file_contents)
|
|
# Add manual stanza if not present and service disabled
|
|
elif not (self.enable) and not (manreg.search(override_file_contents)):
|
|
self.changed = True
|
|
override_state = '\n'.join((override_file_contents, config_line))
|
|
# service already in desired state
|
|
else:
|
|
pass
|
|
# Add file with manual stanza if service disabled
|
|
elif not (self.enable):
|
|
self.changed = True
|
|
override_state = config_line
|
|
else:
|
|
# service already in desired state
|
|
pass
|
|
|
|
if self.module.check_mode:
|
|
self.module.exit_json(changed=self.changed)
|
|
|
|
# The initctl method of enabling and disabling services is much
|
|
# different than for the other service methods. So actually
|
|
# committing the change is done in this conditional and then we
|
|
# skip the boilerplate at the bottom of the method
|
|
if self.changed:
|
|
try:
|
|
write_to_override_file(override_file_name, override_state)
|
|
except:
|
|
self.module.fail_json(msg='Could not modify override file')
|
|
|
|
return
|
|
|
|
#
|
|
# SysV's chkconfig
|
|
#
|
|
if self.enable_cmd.endswith("chkconfig"):
|
|
if self.enable:
|
|
action = 'on'
|
|
else:
|
|
action = 'off'
|
|
|
|
(rc, out, err) = self.execute_command("%s --list %s" % (self.enable_cmd, self.name))
|
|
if 'chkconfig --add %s' % self.name in err:
|
|
self.execute_command("%s --add %s" % (self.enable_cmd, self.name))
|
|
(rc, out, err) = self.execute_command("%s --list %s" % (self.enable_cmd, self.name))
|
|
if not self.name in out:
|
|
self.module.fail_json(msg="service %s does not support chkconfig" % self.name)
|
|
state = out.split()[-1]
|
|
|
|
# Check if we're already in the correct state
|
|
if "3:%s" % action in out and "5:%s" % action in out:
|
|
self.changed = False
|
|
return
|
|
|
|
#
|
|
# Systemd's systemctl
|
|
#
|
|
if self.enable_cmd.endswith("systemctl"):
|
|
if self.enable:
|
|
action = 'enable'
|
|
else:
|
|
action = 'disable'
|
|
|
|
# Check if we're already in the correct state
|
|
d = self.get_systemd_status_dict()
|
|
if "UnitFileState" in d:
|
|
if self.enable and d["UnitFileState"] == "enabled":
|
|
self.changed = False
|
|
elif not self.enable and d["UnitFileState"] == "disabled":
|
|
self.changed = False
|
|
elif not self.enable:
|
|
self.changed = False
|
|
|
|
if not self.changed:
|
|
return
|
|
|
|
#
|
|
# OpenRC's rc-update
|
|
#
|
|
if self.enable_cmd.endswith("rc-update"):
|
|
if self.enable:
|
|
action = 'add'
|
|
else:
|
|
action = 'delete'
|
|
|
|
(rc, out, err) = self.execute_command("%s show" % self.enable_cmd)
|
|
for line in out.splitlines():
|
|
service_name, runlevels = line.split('|')
|
|
service_name = service_name.strip()
|
|
if service_name != self.name:
|
|
continue
|
|
runlevels = re.split(r'\s+', runlevels)
|
|
# service already enabled for the runlevel
|
|
if self.enable and self.runlevel in runlevels:
|
|
self.changed = False
|
|
# service already disabled for the runlevel
|
|
elif not self.enable and self.runlevel not in runlevels:
|
|
self.changed = False
|
|
break
|
|
else:
|
|
# service already disabled altogether
|
|
if not self.enable:
|
|
self.changed = False
|
|
|
|
if not self.changed:
|
|
return
|
|
|
|
#
|
|
# update-rc.d style
|
|
#
|
|
if self.enable_cmd.endswith("update-rc.d"):
|
|
if self.enable:
|
|
action = 'enable'
|
|
else:
|
|
action = 'disable'
|
|
|
|
if self.enable:
|
|
# make sure the init.d symlinks are created
|
|
# otherwise enable might not work
|
|
(rc, out, err) = self.execute_command("%s %s defaults" \
|
|
% (self.enable_cmd, self.name))
|
|
if rc != 0:
|
|
if err:
|
|
self.module.fail_json(msg=err)
|
|
else:
|
|
self.module.fail_json(msg=out)
|
|
|
|
(rc, out, err) = self.execute_command("%s -n %s %s" \
|
|
% (self.enable_cmd, self.name, action))
|
|
self.changed = False
|
|
for line in out.splitlines():
|
|
if line.startswith('rename'):
|
|
self.changed = True
|
|
break
|
|
elif self.enable and 'do not exist' in line:
|
|
self.changed = True
|
|
break
|
|
elif not self.enable and 'already exist' in line:
|
|
self.changed = True
|
|
break
|
|
|
|
# Debian compatibility
|
|
for line in err.splitlines():
|
|
if self.enable and 'no runlevel symlinks to modify' in line:
|
|
self.changed = True
|
|
break
|
|
|
|
if not self.changed:
|
|
return
|
|
|
|
#
|
|
# If we've gotten to the end, the service needs to be updated
|
|
#
|
|
self.changed = True
|
|
|
|
# we change argument order depending on real binary used:
|
|
# rc-update and systemctl need the argument order reversed
|
|
|
|
if self.enable_cmd.endswith("rc-update"):
|
|
args = (self.enable_cmd, action, self.name + " " + self.runlevel)
|
|
elif self.enable_cmd.endswith("systemctl"):
|
|
args = (self.enable_cmd, action, self.__systemd_unit)
|
|
else:
|
|
args = (self.enable_cmd, self.name, action)
|
|
|
|
if self.module.check_mode:
|
|
self.module.exit_json(changed=self.changed)
|
|
|
|
(rc, out, err) = self.execute_command("%s %s %s" % args)
|
|
if rc != 0:
|
|
if err:
|
|
self.module.fail_json(msg="Error when trying to %s %s: rc=%s %s" % (action, self.name, rc, err))
|
|
else:
|
|
self.module.fail_json(msg="Failure for %s %s: rc=%s %s" % (action, self.name, rc, out))
|
|
|
|
return (rc, out, err)
|
|
|
|
|
|
def service_control(self):
|
|
|
|
# Decide what command to run
|
|
svc_cmd = ''
|
|
arguments = self.arguments
|
|
if self.svc_cmd:
|
|
if not self.svc_cmd.endswith("systemctl"):
|
|
# SysV and OpenRC take the form <cmd> <name> <action>
|
|
svc_cmd = "%s %s" % (self.svc_cmd, self.name)
|
|
else:
|
|
# systemd commands take the form <cmd> <action> <name>
|
|
svc_cmd = self.svc_cmd
|
|
arguments = "%s %s" % (self.__systemd_unit, arguments)
|
|
elif self.svc_initscript:
|
|
# upstart
|
|
svc_cmd = "%s" % self.svc_initscript
|
|
|
|
# In OpenRC, if a service crashed, we need to reset its status to
|
|
# stopped with the zap command, before we can start it back.
|
|
if self.svc_cmd and self.svc_cmd.endswith('rc-service') and self.action == 'start' and self.crashed:
|
|
self.execute_command("%s zap" % svc_cmd, daemonize=True)
|
|
|
|
if self.action is not "restart":
|
|
if svc_cmd != '':
|
|
# upstart or systemd or OpenRC
|
|
rc_state, stdout, stderr = self.execute_command("%s %s %s" % (svc_cmd, self.action, arguments), daemonize=True)
|
|
else:
|
|
# SysV
|
|
rc_state, stdout, stderr = self.execute_command("%s %s %s" % (self.action, self.name, arguments), daemonize=True)
|
|
elif self.svc_cmd and self.svc_cmd.endswith('rc-service'):
|
|
# All services in OpenRC support restart.
|
|
rc_state, stdout, stderr = self.execute_command("%s %s %s" % (svc_cmd, self.action, arguments), daemonize=True)
|
|
else:
|
|
# In other systems, not all services support restart. Do it the hard way.
|
|
if svc_cmd != '':
|
|
# upstart or systemd
|
|
rc1, stdout1, stderr1 = self.execute_command("%s %s %s" % (svc_cmd, 'stop', arguments), daemonize=True)
|
|
else:
|
|
# SysV
|
|
rc1, stdout1, stderr1 = self.execute_command("%s %s %s" % ('stop', self.name, arguments), daemonize=True)
|
|
|
|
if self.sleep:
|
|
time.sleep(self.sleep)
|
|
|
|
if svc_cmd != '':
|
|
# upstart or systemd
|
|
rc2, stdout2, stderr2 = self.execute_command("%s %s %s" % (svc_cmd, 'start', arguments), daemonize=True)
|
|
else:
|
|
# SysV
|
|
rc2, stdout2, stderr2 = self.execute_command("%s %s %s" % ('start', self.name, arguments), daemonize=True)
|
|
|
|
# merge return information
|
|
if rc1 != 0 and rc2 == 0:
|
|
rc_state = rc2
|
|
stdout = stdout2
|
|
stderr = stderr2
|
|
else:
|
|
rc_state = rc1 + rc2
|
|
stdout = stdout1 + stdout2
|
|
stderr = stderr1 + stderr2
|
|
|
|
return(rc_state, stdout, stderr)
|
|
|
|
# ===========================================
|
|
# Subclass: FreeBSD
|
|
|
|
class FreeBsdService(Service):
|
|
"""
|
|
This is the FreeBSD Service manipulation class - it uses the /etc/rc.conf
|
|
file for controlling services started at boot and the 'service' binary to
|
|
check status and perform direct service manipulation.
|
|
"""
|
|
|
|
platform = 'FreeBSD'
|
|
distribution = None
|
|
|
|
def get_service_tools(self):
|
|
self.svc_cmd = self.module.get_bin_path('service', True)
|
|
|
|
if not self.svc_cmd:
|
|
self.module.fail_json(msg='unable to find service binary')
|
|
|
|
def get_service_status(self):
|
|
rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, 'onestatus', self.arguments))
|
|
if rc == 1:
|
|
self.running = False
|
|
elif rc == 0:
|
|
self.running = True
|
|
|
|
def service_enable(self):
|
|
if self.enable:
|
|
self.rcconf_value = "YES"
|
|
else:
|
|
self.rcconf_value = "NO"
|
|
|
|
rcfiles = [ '/etc/rc.conf','/etc/rc.conf.local', '/usr/local/etc/rc.conf' ]
|
|
for rcfile in rcfiles:
|
|
if os.path.isfile(rcfile):
|
|
self.rcconf_file = rcfile
|
|
|
|
rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, 'rcvar', self.arguments))
|
|
cmd = "%s %s %s %s" % (self.svc_cmd, self.name, 'rcvar', self.arguments)
|
|
rcvars = shlex.split(stdout, comments=True)
|
|
|
|
if not rcvars:
|
|
self.module.fail_json(msg="unable to determine rcvar", stdout=stdout, stderr=stderr)
|
|
|
|
# In rare cases, i.e. sendmail, rcvar can return several key=value pairs
|
|
# Usually there is just one, however. In other rare cases, i.e. uwsgi,
|
|
# rcvar can return extra uncommented data that is not at all related to
|
|
# the rcvar. We will just take the first key=value pair we come across
|
|
# and hope for the best.
|
|
for rcvar in rcvars:
|
|
if '=' in rcvar:
|
|
self.rcconf_key = rcvar.split('=')[0]
|
|
break
|
|
|
|
if self.rcconf_key is None:
|
|
self.module.fail_json(msg="unable to determine rcvar", stdout=stdout, stderr=stderr)
|
|
|
|
try:
|
|
return self.service_enable_rcconf()
|
|
except:
|
|
self.module.fail_json(msg='unable to set rcvar')
|
|
|
|
def service_control(self):
|
|
|
|
if self.action is "start":
|
|
self.action = "onestart"
|
|
if self.action is "stop":
|
|
self.action = "onestop"
|
|
if self.action is "reload":
|
|
self.action = "onereload"
|
|
|
|
return self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, self.action, self.arguments))
|
|
|
|
# ===========================================
|
|
# Subclass: OpenBSD
|
|
|
|
class OpenBsdService(Service):
|
|
"""
|
|
This is the OpenBSD Service manipulation class - it uses /etc/rc.d for
|
|
service control. Enabling a service is currently not supported because the
|
|
<service>_flags variable is not boolean, you should supply a rc.conf.local
|
|
file in some other way.
|
|
"""
|
|
|
|
platform = 'OpenBSD'
|
|
distribution = None
|
|
|
|
def get_service_tools(self):
|
|
rcdir = '/etc/rc.d'
|
|
|
|
rc_script = "%s/%s" % (rcdir, self.name)
|
|
if os.path.isfile(rc_script):
|
|
self.svc_cmd = rc_script
|
|
|
|
if not self.svc_cmd:
|
|
self.module.fail_json(msg='unable to find rc.d script')
|
|
|
|
def get_service_status(self):
|
|
rc, stdout, stderr = self.execute_command("%s %s" % (self.svc_cmd, 'check'))
|
|
if rc == 1:
|
|
self.running = False
|
|
elif rc == 0:
|
|
self.running = True
|
|
|
|
def service_control(self):
|
|
return self.execute_command("%s %s" % (self.svc_cmd, self.action))
|
|
|
|
# ===========================================
|
|
# Subclass: NetBSD
|
|
|
|
class NetBsdService(Service):
|
|
"""
|
|
This is the NetBSD Service manipulation class - it uses the /etc/rc.conf
|
|
file for controlling services started at boot, check status and perform
|
|
direct service manipulation. Init scripts in /etc/rcd are used for
|
|
controlling services (start/stop) as well as for controlling the current
|
|
state.
|
|
"""
|
|
|
|
platform = 'NetBSD'
|
|
distribution = None
|
|
|
|
def get_service_tools(self):
|
|
initpaths = [ '/etc/rc.d' ] # better: $rc_directories - how to get in here? Run: sh -c '. /etc/rc.conf ; echo $rc_directories'
|
|
|
|
for initdir in initpaths:
|
|
initscript = "%s/%s" % (initdir,self.name)
|
|
if os.path.isfile(initscript):
|
|
self.svc_initscript = initscript
|
|
|
|
if not self.svc_initscript:
|
|
self.module.fail_json(msg='unable to find rc.d script')
|
|
|
|
def service_enable(self):
|
|
if self.enable:
|
|
self.rcconf_value = "YES"
|
|
else:
|
|
self.rcconf_value = "NO"
|
|
|
|
rcfiles = [ '/etc/rc.conf' ] # Overkill?
|
|
for rcfile in rcfiles:
|
|
if os.path.isfile(rcfile):
|
|
self.rcconf_file = rcfile
|
|
|
|
self.rcconf_key = "%s" % string.replace(self.name,"-","_")
|
|
|
|
return self.service_enable_rcconf()
|
|
|
|
def get_service_status(self):
|
|
self.svc_cmd = "%s" % self.svc_initscript
|
|
rc, stdout, stderr = self.execute_command("%s %s" % (self.svc_cmd, 'onestatus'))
|
|
if rc == 1:
|
|
self.running = False
|
|
elif rc == 0:
|
|
self.running = True
|
|
|
|
def service_control(self):
|
|
if self.action is "start":
|
|
self.action = "onestart"
|
|
if self.action is "stop":
|
|
self.action = "onestop"
|
|
|
|
self.svc_cmd = "%s" % self.svc_initscript
|
|
return self.execute_command("%s %s" % (self.svc_cmd, self.action), daemonize=True)
|
|
|
|
# ===========================================
|
|
# Subclass: SunOS
|
|
class SunOSService(Service):
|
|
"""
|
|
This is the SunOS Service manipulation class - it uses the svcadm
|
|
command for controlling services, and svcs command for checking status.
|
|
It also tries to be smart about taking the service out of maintenance
|
|
state if necessary.
|
|
"""
|
|
platform = 'SunOS'
|
|
distribution = None
|
|
|
|
def get_service_tools(self):
|
|
self.svcs_cmd = self.module.get_bin_path('svcs', True)
|
|
|
|
if not self.svcs_cmd:
|
|
self.module.fail_json(msg='unable to find svcs binary')
|
|
|
|
self.svcadm_cmd = self.module.get_bin_path('svcadm', True)
|
|
|
|
if not self.svcadm_cmd:
|
|
self.module.fail_json(msg='unable to find svcadm binary')
|
|
|
|
def get_service_status(self):
|
|
status = self.get_sunos_svcs_status()
|
|
# Only 'online' is considered properly running. Everything else is off
|
|
# or has some sort of problem.
|
|
if status == 'online':
|
|
self.running = True
|
|
else:
|
|
self.running = False
|
|
|
|
def get_sunos_svcs_status(self):
|
|
rc, stdout, stderr = self.execute_command("%s %s" % (self.svcs_cmd, self.name))
|
|
if rc == 1:
|
|
if stderr:
|
|
self.module.fail_json(msg=stderr)
|
|
else:
|
|
self.module.fail_json(msg=stdout)
|
|
|
|
lines = stdout.rstrip("\n").split("\n")
|
|
status = lines[-1].split(" ")[0]
|
|
# status is one of: online, offline, degraded, disabled, maintenance, uninitialized
|
|
# see man svcs(1)
|
|
return status
|
|
|
|
def service_enable(self):
|
|
# Get current service enablement status
|
|
rc, stdout, stderr = self.execute_command("%s -l %s" % (self.svcs_cmd, self.name))
|
|
|
|
if rc != 0:
|
|
if stderr:
|
|
self.module.fail_json(msg=stderr)
|
|
else:
|
|
self.module.fail_json(msg=stdout)
|
|
|
|
enabled = False
|
|
temporary = False
|
|
|
|
# look for enabled line, which could be one of:
|
|
# enabled true (temporary)
|
|
# enabled false (temporary)
|
|
# enabled true
|
|
# enabled false
|
|
for line in stdout.split("\n"):
|
|
if line.startswith("enabled"):
|
|
if "true" in line:
|
|
enabled = True
|
|
if "temporary" in line:
|
|
temporary = True
|
|
|
|
startup_enabled = (enabled and not temporary) or (not enabled and temporary)
|
|
|
|
if self.enable and startup_enabled:
|
|
return
|
|
elif (not self.enable) and (not startup_enabled):
|
|
return
|
|
|
|
# Mark service as started or stopped (this will have the side effect of
|
|
# actually stopping or starting the service)
|
|
if self.enable:
|
|
subcmd = "enable -rs"
|
|
else:
|
|
subcmd = "disable -s"
|
|
|
|
rc, stdout, stderr = self.execute_command("%s %s %s" % (self.svcadm_cmd, subcmd, self.name))
|
|
|
|
if rc != 0:
|
|
if stderr:
|
|
self.module.fail_json(msg=stderr)
|
|
else:
|
|
self.module.fail_json(msg=stdout)
|
|
|
|
self.changed = True
|
|
|
|
|
|
def service_control(self):
|
|
status = self.get_sunos_svcs_status()
|
|
|
|
# if starting or reloading, clear maintenace states
|
|
if self.action in ['start', 'reload', 'restart'] and status in ['maintenance', 'degraded']:
|
|
rc, stdout, stderr = self.execute_command("%s clear %s" % (self.svcadm_cmd, self.name))
|
|
if rc != 0:
|
|
return rc, stdout, stderr
|
|
status = self.get_sunos_svcs_status()
|
|
|
|
if status in ['maintenance', 'degraded']:
|
|
self.module.fail_json(msg="Failed to bring service out of %s status." % status)
|
|
|
|
if self.action == 'start':
|
|
subcmd = "enable -rst"
|
|
elif self.action == 'stop':
|
|
subcmd = "disable -st"
|
|
elif self.action == 'reload':
|
|
subcmd = "refresh"
|
|
elif self.action == 'restart' and status == 'online':
|
|
subcmd = "restart"
|
|
elif self.action == 'restart' and status != 'online':
|
|
subcmd = "enable -rst"
|
|
|
|
return self.execute_command("%s %s %s" % (self.svcadm_cmd, subcmd, self.name))
|
|
|
|
# ===========================================
|
|
# Subclass: AIX
|
|
|
|
class AIX(Service):
|
|
"""
|
|
This is the AIX Service (SRC) manipulation class - it uses lssrc, startsrc, stopsrc
|
|
and refresh for service control. Enabling a service is currently not supported.
|
|
Would require to add an entry in the /etc/inittab file (mkitab, chitab and rmitab
|
|
commands)
|
|
"""
|
|
|
|
platform = 'AIX'
|
|
distribution = None
|
|
|
|
def get_service_tools(self):
|
|
self.lssrc_cmd = self.module.get_bin_path('lssrc', True)
|
|
|
|
if not self.lssrc_cmd:
|
|
self.module.fail_json(msg='unable to find lssrc binary')
|
|
|
|
self.startsrc_cmd = self.module.get_bin_path('startsrc', True)
|
|
|
|
if not self.startsrc_cmd:
|
|
self.module.fail_json(msg='unable to find startsrc binary')
|
|
|
|
self.stopsrc_cmd = self.module.get_bin_path('stopsrc', True)
|
|
|
|
if not self.stopsrc_cmd:
|
|
self.module.fail_json(msg='unable to find stopsrc binary')
|
|
|
|
self.refresh_cmd = self.module.get_bin_path('refresh', True)
|
|
|
|
if not self.refresh_cmd:
|
|
self.module.fail_json(msg='unable to find refresh binary')
|
|
|
|
|
|
def get_service_status(self):
|
|
status = self.get_aix_src_status()
|
|
# Only 'active' is considered properly running. Everything else is off
|
|
# or has some sort of problem.
|
|
if status == 'active':
|
|
self.running = True
|
|
else:
|
|
self.running = False
|
|
|
|
def get_aix_src_status(self):
|
|
rc, stdout, stderr = self.execute_command("%s -s %s" % (self.lssrc_cmd, self.name))
|
|
if rc == 1:
|
|
if stderr:
|
|
self.module.fail_json(msg=stderr)
|
|
else:
|
|
self.module.fail_json(msg=stdout)
|
|
|
|
lines = stdout.rstrip("\n").split("\n")
|
|
status = lines[-1].split(" ")[-1]
|
|
# status is one of: active, inoperative
|
|
return status
|
|
|
|
def service_control(self):
|
|
if self.action == 'start':
|
|
srccmd = self.startsrc_cmd
|
|
elif self.action == 'stop':
|
|
srccmd = self.stopsrc_cmd
|
|
elif self.action == 'reload':
|
|
srccmd = self.refresh_cmd
|
|
elif self.action == 'restart':
|
|
self.execute_command("%s -s %s" % (self.stopsrc_cmd, self.name))
|
|
srccmd = self.startsrc_cmd
|
|
|
|
if self.arguments and self.action == 'start':
|
|
return self.execute_command("%s -a \"%s\" -s %s" % (srccmd, self.arguments, self.name))
|
|
else:
|
|
return self.execute_command("%s -s %s" % (srccmd, self.name))
|
|
|
|
|
|
# ===========================================
|
|
# Main control flow
|
|
|
|
def main():
|
|
module = AnsibleModule(
|
|
argument_spec = dict(
|
|
name = dict(required=True),
|
|
state = dict(choices=['running', 'started', 'stopped', 'restarted', 'reloaded']),
|
|
sleep = dict(required=False, type='int', default=None),
|
|
pattern = dict(required=False, default=None),
|
|
enabled = dict(type='bool'),
|
|
runlevel = dict(required=False, default='default'),
|
|
arguments = dict(aliases=['args'], default=''),
|
|
),
|
|
supports_check_mode=True
|
|
)
|
|
if module.params['state'] is None and module.params['enabled'] is None:
|
|
module.fail_json(msg="Neither 'state' nor 'enabled' set")
|
|
|
|
service = Service(module)
|
|
|
|
if service.syslogging:
|
|
syslog.openlog('ansible-%s' % os.path.basename(__file__))
|
|
syslog.syslog(syslog.LOG_NOTICE, 'Service instantiated - platform %s' % service.platform)
|
|
if service.distribution:
|
|
syslog.syslog(syslog.LOG_NOTICE, 'Service instantiated - distribution %s' % service.distribution)
|
|
|
|
rc = 0
|
|
out = ''
|
|
err = ''
|
|
result = {}
|
|
result['name'] = service.name
|
|
|
|
# Find service management tools
|
|
service.get_service_tools()
|
|
|
|
# Enable/disable service startup at boot if requested
|
|
if service.module.params['enabled'] is not None:
|
|
# FIXME: ideally this should detect if we need to toggle the enablement state, though
|
|
# it's unlikely the changed handler would need to fire in this case so it's a minor thing.
|
|
service.service_enable()
|
|
result['enabled'] = service.enable
|
|
|
|
if module.params['state'] is None:
|
|
# Not changing the running state, so bail out now.
|
|
result['changed'] = service.changed
|
|
module.exit_json(**result)
|
|
|
|
result['state'] = service.state
|
|
|
|
# Collect service status
|
|
if service.pattern:
|
|
service.check_ps()
|
|
else:
|
|
service.get_service_status()
|
|
|
|
# Calculate if request will change service state
|
|
service.check_service_changed()
|
|
|
|
# Modify service state if necessary
|
|
(rc, out, err) = service.modify_service_state()
|
|
|
|
if rc != 0:
|
|
if err and "Job is already running" in err:
|
|
# upstart got confused, one such possibility is MySQL on Ubuntu 12.04
|
|
# where status may report it has no start/stop links and we could
|
|
# not get accurate status
|
|
pass
|
|
else:
|
|
if err:
|
|
module.fail_json(msg=err)
|
|
else:
|
|
module.fail_json(msg=out)
|
|
|
|
result['changed'] = service.changed | service.svc_change
|
|
if service.module.params['enabled'] is not None:
|
|
result['enabled'] = service.module.params['enabled']
|
|
|
|
if not service.module.params['state']:
|
|
status = service.get_service_status()
|
|
if status is None:
|
|
result['state'] = 'absent'
|
|
elif status is False:
|
|
result['state'] = 'started'
|
|
else:
|
|
result['state'] = 'stopped'
|
|
else:
|
|
# as we may have just bounced the service the service command may not
|
|
# report accurate state at this moment so just show what we ran
|
|
if service.module.params['state'] in ['started','restarted','running','reloaded']:
|
|
result['state'] = 'started'
|
|
else:
|
|
result['state'] = 'stopped'
|
|
|
|
module.exit_json(**result)
|
|
|
|
from ansible.module_utils.basic import *
|
|
main()
|