New VMware Module to support adding an ESXi host to a distributed vswitch
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Joseph Callen
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281
cloud/vmware/vmware_dvs_host.py
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281
cloud/vmware/vmware_dvs_host.py
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2015, Joseph Callen <jcallen () csc.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: vmware_dvs_host
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short_description: Add or remove a host from distributed virtual switch
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description:
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- Add or remove a host from distributed virtual switch
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version_added: 2.0
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author: "Joseph Callen (@jcpowermac)"
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notes:
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- Tested on vSphere 5.5
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requirements:
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- "python >= 2.6"
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- PyVmomi
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options:
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hostname:
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description:
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- The hostname or IP address of the vSphere vCenter API server
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required: True
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username:
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description:
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- The username of the vSphere vCenter
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required: True
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aliases: ['user', 'admin']
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password:
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description:
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- The password of the vSphere vCenter
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required: True
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aliases: ['pass', 'pwd']
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esxi_hostname:
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description:
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- The ESXi hostname
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required: True
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switch_name:
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description:
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- The name of the Distributed vSwitch
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required: True
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vmnics:
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description:
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- The ESXi hosts vmnics to use with the Distributed vSwitch
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required: True
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state:
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description:
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- If the host should be present or absent attached to the vSwitch
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choices: ['present', 'absent']
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required: True
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'''
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EXAMPLES = '''
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# Example vmware_dvs_host command from Ansible Playbooks
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- name: Add Host to dVS
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local_action:
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module: vmware_dvs_host
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hostname: vcenter_ip_or_hostname
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username: vcenter_username
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password: vcenter_password
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esxi_hostname: esxi_hostname_as_listed_in_vcenter
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switch_name: dvSwitch
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vmnics:
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- vmnic0
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- vmnic1
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state: present
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'''
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try:
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import collections
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from pyVmomi import vim, vmodl
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HAS_PYVMOMI = True
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except ImportError:
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HAS_PYVMOMI = False
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def find_dvspg_by_name(dv_switch, portgroup_name):
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portgroups = dv_switch.portgroup
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for pg in portgroups:
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if pg.name == portgroup_name:
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return pg
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return None
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def find_dvs_uplink_pg(dv_switch):
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# There should only always be a single uplink port group on
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# a distributed virtual switch
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if len(dv_switch.config.uplinkPortgroup):
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return dv_switch.config.uplinkPortgroup[0]
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else:
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return None
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# operation should be edit, add and remove
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def modify_dvs_host(dv_switch, host, operation, uplink_portgroup=None, vmnics=None):
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spec = vim.DistributedVirtualSwitch.ConfigSpec()
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spec.configVersion = dv_switch.config.configVersion
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spec.host = [vim.dvs.HostMember.ConfigSpec()]
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spec.host[0].operation = operation
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spec.host[0].host = host
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if operation in ("edit", "add"):
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spec.host[0].backing = vim.dvs.HostMember.PnicBacking()
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count = 0
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for nic in vmnics:
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spec.host[0].backing.pnicSpec.append(vim.dvs.HostMember.PnicSpec())
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spec.host[0].backing.pnicSpec[count].pnicDevice = nic
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spec.host[0].backing.pnicSpec[count].uplinkPortgroupKey = uplink_portgroup.key
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count += 1
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task = dv_switch.ReconfigureDvs_Task(spec)
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changed, result = wait_for_task(task)
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return changed, result
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def state_destroy_dvs_host(module):
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operation = "remove"
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host = module.params['host']
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dv_switch = module.params['dv_switch']
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changed = True
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result = None
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if not module.check_mode:
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changed, result = modify_dvs_host(dv_switch, host, operation)
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module.exit_json(changed=changed, result=str(result))
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def state_exit_unchanged(module):
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module.exit_json(changed=False)
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def state_update_dvs_host(module):
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dv_switch = module.params['dv_switch']
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uplink_portgroup = module.params['uplink_portgroup']
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vmnics = module.params['vmnics']
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host = module.params['host']
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operation = "edit"
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changed = True
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result = None
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if not module.check_mode:
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changed, result = modify_dvs_host(dv_switch, host, operation, uplink_portgroup, vmnics)
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module.exit_json(changed=changed, result=str(result))
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def state_create_dvs_host(module):
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dv_switch = module.params['dv_switch']
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uplink_portgroup = module.params['uplink_portgroup']
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vmnics = module.params['vmnics']
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host = module.params['host']
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operation = "add"
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changed = True
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result = None
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if not module.check_mode:
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changed, result = modify_dvs_host(dv_switch, host, operation, uplink_portgroup, vmnics)
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module.exit_json(changed=changed, result=str(result))
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def find_host_attached_dvs(esxi_hostname, dv_switch):
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for dvs_host_member in dv_switch.config.host:
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if dvs_host_member.config.host.name == esxi_hostname:
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return dvs_host_member.config.host
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return None
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def check_uplinks(dv_switch, host, vmnics):
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pnic_device = []
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for dvs_host_member in dv_switch.config.host:
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if dvs_host_member.config.host == host:
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for pnicSpec in dvs_host_member.config.backing.pnicSpec:
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pnic_device.append(pnicSpec.pnicDevice)
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return collections.Counter(pnic_device) == collections.Counter(vmnics)
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def check_dvs_host_state(module):
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switch_name = module.params['switch_name']
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esxi_hostname = module.params['esxi_hostname']
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vmnics = module.params['vmnics']
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content = connect_to_api(module)
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module.params['content'] = content
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dv_switch = find_dvs_by_name(content, switch_name)
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if dv_switch is None:
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raise Exception("A distributed virtual switch %s does not exist" % switch_name)
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uplink_portgroup = find_dvs_uplink_pg(dv_switch)
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if uplink_portgroup is None:
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raise Exception("An uplink portgroup does not exist on the distributed virtual switch %s" % switch_name)
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module.params['dv_switch'] = dv_switch
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module.params['uplink_portgroup'] = uplink_portgroup
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host = find_host_attached_dvs(esxi_hostname, dv_switch)
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if host is None:
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# We still need the HostSystem object to add the host
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# to the distributed vswitch
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host = find_hostsystem_by_name(content, esxi_hostname)
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if host is None:
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module.fail_json(msg="The esxi_hostname %s does not exist in vCenter" % esxi_hostname)
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module.params['host'] = host
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return 'absent'
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else:
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module.params['host'] = host
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if check_uplinks(dv_switch, host, vmnics):
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return 'present'
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else:
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return 'update'
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def main():
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argument_spec = vmware_argument_spec()
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argument_spec.update(dict(esxi_hostname=dict(required=True, type='str'),
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switch_name=dict(required=True, type='str'),
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vmnics=dict(required=True, type='list'),
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state=dict(default='present', choices=['present', 'absent'], type='str')))
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module = AnsibleModule(argument_spec=argument_spec, supports_check_mode=True)
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if not HAS_PYVMOMI:
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module.fail_json(msg='pyvmomi is required for this module')
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try:
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dvs_host_states = {
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'absent': {
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'present': state_destroy_dvs_host,
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'absent': state_exit_unchanged,
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},
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'present': {
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'update': state_update_dvs_host,
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'present': state_exit_unchanged,
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'absent': state_create_dvs_host,
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}
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}
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dvs_host_states[module.params['state']][check_dvs_host_state(module)](module)
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except vmodl.RuntimeFault as runtime_fault:
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module.fail_json(msg=runtime_fault.msg)
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except vmodl.MethodFault as method_fault:
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module.fail_json(msg=method_fault.msg)
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except Exception as e:
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module.fail_json(msg=str(e))
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from ansible.module_utils.vmware import *
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from ansible.module_utils.basic import *
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if __name__ == '__main__':
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main()
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