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Add RDS cluster info to EC2 dynamic inventory

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Add db_clusters to the ec2 inventory. Show tags. Only show clusters
matching tags in the `.ini`. Set `include_rds_clusters = True` option to
enable RDS cluster inventory collection.

Example inventory output:

```
{
  "db_clusters": {
    "ryansb-cluster-test": {
      "AllocatedStorage": 1,
      "AvailabilityZones": [
        "us-west-2a",
        "us-west-2b",
        "us-west-2c"
      ],
      "BackupRetentionPeriod": 1,
      "DBClusterIdentifier": "ryansb-cluster-test",
      "DBClusterMembers": [
        {
          "DBClusterParameterGroupStatus": "in-sync",
          "DBInstanceIdentifier": "ryansb-test",
          "IsClusterWriter": true,
          "PromotionTier": 1
        },
        {
          "DBClusterParameterGroupStatus": "in-sync",
          "DBInstanceIdentifier": "ryansb-test-us-west-2b",
          "IsClusterWriter": false,
          "PromotionTier": 1
        }
      ],
      "DBClusterParameterGroup": "default.aurora5.6",
      "DBSubnetGroup": "default",
      "DatabaseName": "mydb",
      "DbClusterResourceId": "cluster-OB6H7JQURFKFD4BYNHG5HSRLBA",
      "Endpoint": "ryansb-cluster-test.cluster-c9ntgaejgqln.us-west-2.rds.amazonaws.com",
      "Engine": "aurora",
      "EngineVersion": "5.6.10a",
      "MasterUsername": "admin",
      "Port": 3306,
      "PreferredBackupWindow": "06:09-06:39",
      "PreferredMaintenanceWindow": "mon:11:22-mon:11:52",
      "ReadReplicaIdentifiers": [],
      "Status": "available",
      "StorageEncrypted": false,
      "VpcSecurityGroups": [
        {
          "Status": "active",
          "VpcSecurityGroupId": "sg-47eaea20"
        }
      ]
    }
  },
  "rds": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com",
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "rds_aurora": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com",
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "rds_parameter_group_default_aurora5_6": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com",
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "ryansb-test": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "ryansb-test-us-west-2b": [
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "type_db_r3_large": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com",
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "us-west-2": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com",
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "us-west-2a": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "us-west-2b": [
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ],
  "vpc_id_vpc_3ca34459": [
    "ryansb_test_c9ntgaejgqln_us_west_2_rds_amazonaws_com",
    "ryansb_test_us_west_2b_c9ntgaejgqln_us_west_2_rds_amazonaws_com"
  ]
}
```
This commit is contained in:
Tom Paine 2016-06-09 13:54:50 +01:00 committed by Ryan S. Brown
parent ddf2a73640
commit bb5a1f7440
2 changed files with 61 additions and 0 deletions
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3
contrib/inventory/ec2.ini
View file

@ -82,6 +82,9 @@ all_instances = False
# 'all_rds_instances' to True return all RDS instances regardless of state.
all_rds_instances = False
# Include RDS cluster information (Aurora etc.)
include_rds_clusters = True
# By default, only ElastiCache clusters and nodes in the 'available' state
# are returned. Set 'all_elasticache_clusters' and/or 'all_elastic_nodes'
# to True return all ElastiCache clusters and nodes, regardless of state.

58
contrib/inventory/ec2.py
View file

@ -130,6 +130,7 @@ from boto import rds
from boto import elasticache
from boto import route53
import six
import boto3
from six.moves import configparser
from collections import defaultdict
@ -265,6 +266,12 @@ class Ec2Inventory(object):
if config.has_option('ec2', 'rds'):
self.rds_enabled = config.getboolean('ec2', 'rds')
# Include RDS cluster instances?
if config.has_option('ec2', 'include_rds_clusters'):
self.include_rds_clusters = config.getboolean('ec2', 'include_rds_clusters')
else:
self.include_rds_clusters = False
# Include ElastiCache instances?
self.elasticache_enabled = True
if config.has_option('ec2', 'elasticache'):
@ -474,6 +481,8 @@ class Ec2Inventory(object):
if self.elasticache_enabled:
self.get_elasticache_clusters_by_region(region)
self.get_elasticache_replication_groups_by_region(region)
if self.include_rds_clusters:
self.include_rds_clusters_by_region(region)
self.write_to_cache(self.inventory, self.cache_path_cache)
self.write_to_cache(self.index, self.cache_path_index)
@ -574,6 +583,55 @@ class Ec2Inventory(object):
error = "Looks like AWS RDS is down:\n%s" % e.message
self.fail_with_error(error, 'getting RDS instances')
def include_rds_clusters_by_region(self, region):
client = boto3.client('rds', region_name=region)
clusters = client.describe_db_clusters()["DBClusters"]
account_id = boto.connect_iam().get_user().arn.split(':')[4]
c_dict = {}
for c in clusters:
# remove these datetime objects as there is no serialisation to json
# currently in place and we don't need the data yet
if 'EarliestRestorableTime' in c:
del c['EarliestRestorableTime']
if 'LatestRestorableTime' in c:
del c['LatestRestorableTime']
if self.ec2_instance_filters == {}:
matches_filter = True
else:
matches_filter = False
try:
# arn:aws:rds:<region>:<account number>:<resourcetype>:<name>
tags = client.list_tags_for_resource(
ResourceName='arn:aws:rds:' + region + ':' + account_id + ':cluster:' + c['DBClusterIdentifier'])
c['Tags'] = tags['TagList']
if self.ec2_instance_filters:
for filter_key, filter_values in self.ec2_instance_filters.items():
# get AWS tag key e.g. tag:env will be 'env'
tag_name = filter_key.split(":", 1)[1]
# Filter values is a list (if you put multiple values for the same tag name)
matches_filter = any(d['Key'] == tag_name and d['Value'] in filter_values for d in c['Tags'])
if matches_filter:
# it matches a filter, so stop looking for further matches
break
except Exception as e:
if e.message.find('DBInstanceNotFound') >= 0:
# AWS RDS bug (2016-01-06) means deletion does not fully complete and leave an 'empty' cluster.
# Ignore errors when trying to find tags for these
pass
# ignore empty clusters caused by AWS bug
if len(c['DBClusterMembers']) == 0:
continue
elif matches_filter:
c_dict[c['DBClusterIdentifier']] = c
self.inventory['db_clusters'] = c_dict
def get_elasticache_clusters_by_region(self, region):
''' Makes an AWS API call to the list of ElastiCache clusters (with
nodes' info) in a particular region.'''