Ansible Role: Librato

An Ansible role that installs and configures the Librato Agent and plugins

Requirements

None

Dependencies

None

Quickstart

The bare minimum required to get started is to set the email and token variables and include the role:

- hosts: all
  roles:
    - { role: AerisCloud.librato, librato_email: 'you@domain.com', librato_token: 'your-token-here' }

By default, the following plugins are enabled: cpu, df, disk, swap, memory, load.

To include a plugin, set any variables you need for it, then add it to the librato_enabled_plugins variable:

- hosts: all
  vars:
    librato_apache_path: '/my-status-endpoint'
    librato_enabled_plugins: ['apache']

Supported Plugins

• cpu
• df
• memory
• load
• disk
• swap
• apache
• nginx
• nginx_plus
• jvm
• memcached
• varnish
• zookeeper
• docker
• elasticsearch
• mongodb
• postgresql
• mysql
• redis
• haproxy
• interface

Usage

Using custom or upstream collectd plugins

To use your own custom or upstream collectd plugin, simply have another module drop the config into /opt/collectd/etc/collectd.conf.d/ and any custom plugins into /opt/collectd/share/collectd/.

Reference

Plugin: apache

• librato_apache_protocol

  Type: string

  The protocol to use. Defaults to http. Change this to https if you require SSL.

• librato_apache_host

  Type: string

  The hostname to use. Defaults to localhost.

• librato.apache.path

  Type: string

  The path to the status page. Defaults to /server-status. ?auto is automatically appended, so no need to include it.

• librato_apache_user

  Type: string

  The username to use for password-protected status pages. Defaults to empty.

• librato_apache_password

  Type: string

  The password to use for password-protected status pages. Defaults to empty.

Plugin: df

• librato_df_fstype

  Type: array

  The FSType to use. Defaults to ["ext2", "ext3", "ext4", "xfs", "jfs", "btrfs", "reiserfs", "vboxsf", "tmpfs"].

• librato_df_device

  Type: array

  The Device to use. Defaults to ''

• librato_df_mountpoint

  Type: array

  The MountPoint to use. Defaults to ''

Plugin: docker

• librato_docker_protocol

  Type: string

  The protocol to use. Defaults to http. Change this to https if you require SSL.

• librato_docker_host

  Type: string

  The Docker hostname. Defaults to localhost.

• librato_docker_port

  Type: string

  The Docker port. Defaults to 2375

Plugin: elasticsearch

• librato_elasticsearch_protocol

  Type: string

  The protocol to use. Defaults to http. Change this to https if you require SSL.

• librato_elasticsearch_host

  Type: string

  The ElasticSearch hostname. Defaults to localhost.

• librato_elasticsearch_port_

  Type: string

  The ElasticSearch port. Defaults to 9200.

• librato_elasticsearch_cluster_name

  Type: string

  The ElasticSearch cluster name, if set. Defaults to nil.

• librato_elasticsearch_verbose

  Type: true/false

  Verbosity trigger of the plugin. Defaults to true.

Plugin: haproxy

• librato_haproxy_socket_file

  Type: string

  The HAProxy socket file. Defaults to /run/haproxy/admin.sock.

• librato_haproxy_proxies

  Type: array

  The default proxies to collect. Defaults to server, frontend, backend.

Plugin: interface

Interface has no configurable attributes.

Plugin: jvm

• librato_jvm_host

  Type: string

  The JVM host. Defaults to localhost.

• librato_jvm_service_url

  Type: string

  The JVM service URL to query. Defaults to service:jmx:rmi:///jndi/rmi://localhost:17264/jmxrmi.

• librato_jvm_mbeans

  Type: mapping

  Additional mbeans to collect. Defaults to empty.

  Format of the mapping is:

  librato_jvm_mbeans: [
    {
      name: 'mbean name'
      object_name: 'object name'
      instance_prefix': 'instance prefix (optional)',
      instance_from': 'instance from (optional)',
      values: [
        {
          type: 'value type',
          table: true|false,
          attribute: 'attribute'
          instance_prefix: 'instance prefix (optional)',
          instance_from: 'instance from (optional)'
        }
      ]
    }
  ]

Plugin: memcached

• librato_memcached_host

  Type: string

  The memcached hostname. Defaults to localhost.

• librato_memcached_port

  Type: string

  The memcached port. Defaults to 11211.

Plugin: mongodb

• librato_mongodb_host

  Type: string

  The MongoDB hostname. Defaults to localhost.

• librato_mongodb_port

  Type: string

  The MongoDB port. Defaults to 27017.

• librato_mongodb_user

  Type: string

  The MongoDB username to connect with. Defaults to nil.

• librato_mongodb_password

  Type: string

  The MongoDB password to connect with. Defaults to nil.

• librato_mongodb_databases

  Type: array

  Databases to collect metrics for. Defaults to empty. admin database is automatically included in the array.

• librato_mongodb_name

  Type: string

  Set the name of the plugin instance. Defaults to mongodb.

Plugin: mysql

• librato_mysql_databases

  Type: mapping

  Databases to collect metrics for. Defaults to empty.

  Format of the hash is:

  databases: [
    {
      name: 'mydb'
      host: 'localhost'
      port: 3306
      user: ''
      password: ''
      innodb_stats: true
      slave_stats: false
    }
  ]

Plugin: nginx

• librato_nginx_protocol

  Type: string

  The protocol to use. Defaults to http. Change this to https if you require SSL.

• librato_nginx_host

  Type: string

  The hostname to use. Defaults to localhost.

• librato_nginx_path

  Type: string

  The path to the status page. Defaults to /basic_status.

Plugin: nginx_plus

• librato_nginx_plus_protocol

  Type: string

  The protocol to use. Defaults to http. Change this to https if you require SSL.

• librato_nginx_plus_host

  Type: string

  The hostname to use. Defaults to localhost.

• librato_nginx_plus_path

  Type: string

  The path to the status page. Defaults to /status.

• librato_nginx_plus_verbose

  Type: string

  Verbosity on/off for the plugin. Defaults to false.

Plugin: postgresql

• librato_postgresql_socket_file

  Type: string

  The PostgreSQL socket file. Defaults to /var/run/postgresql.

• librato_postgresql_user

  Type: string

  The PostgreSQL user to connect as. Defaults to postgresql.

• librato_postgresql_databases

  Type: mapping

  The databases to collect metrics for. Defaults to empty.

  The format of the hash is:

  databases = [
    {
      name: 'mydb'
      instance: 'baz'
      host: 'localhost'
      port: 5432
      user: ''
      password: ''
      ssl_mode: 'prefer'
    }
  ]

Plugin: redis

• librato_redis_host

  Type: string

  The Redis hostname. Defaults to localhost.

• librato_redis_port

  Type: string

  The Redis port. Defaults to 6379.

• librato_redis_timeout

  Type: string

  The timeout for connecting to Redis in milliseconds. Defaults to 2000.

Plugin: varnish

Varnish has no configurable attributes.

Plugin: zookeeper

• librato_zookeeper_host

  Type: string

  The ZooKeeper hostname. Defaults to localhost.

• librato_zookeeper_port

  Type: string

  The ZooKeeper port. Defaults to 2181.

Global Variables

• librato_email

  Type: string

  The email to use for sending metrics. Use in conjunction with token. This attribute is required and defaults to empty.

• librato_token

  Type: string

  The API token to use for sending metrics. Use in conjunction with email. This attribute is required and defaults to empty.

• librato_version

  Type: string

  The version of the Librato Agent to install.

• librato_repo_url

  Type: string

  The base URL for the packages. Defaults to Librato's repo URL https://packagecloud.io/librato/.

• librato_repo_base

  Type: string

  The repo base to use. Defaults to Librato's repo collection librato-collectd.

• librato_config_base

  Type: string

  The base path for collectd's config files. Defaults to /opt/collectd/etc.

• librato_plugin_config_path

  Type: string

  The path for collectd's plugin configs. Defaults to /opt/collectd/etc/collectd.conf.d.

• librato_hostname

  Type: string

  The hostname to use for the node. Defaults to nil in favor of using FQDNLookup.

• librato_fqdn_lookup

  Type: true/false

  Perform an FQDN lookup for the hostname. Defaults to true.

• librato_interval

  Type: integer

  The global plugin polling interval in seconds. Defaults to 60.

• librato_logging_use_log_file

  Type: true/false

  Write collectd logs to a file. Defaults to true.

• librato_logging_use_syslog

  Type: true/false

  Write collectd logs to syslog. Defaults to false.

• librato_logging_use_logstash

  Type: true/false

  Write collectd logs to a logstash-formatted file. Defaults to false.

• librato_logging_log_file_log_level

  Type: string

  The log level to use for log_file. Defaults to info.

• librato_logging_log_file_filename

  Type: string

  The filename to use for log_file. Defaults to /opt/collectd/var/log/collectd.log.

• librato_logging_log_file_timestamp

  Type: true/false

  Use timestamps in the log file or not. Defaults to true.

• librato_logging_log_file_print_severity

  Type: true/false

  Include severity levels in the log file or not. Defaults to true.

• librato_logging_syslog_log_level

  Type: string

  The log level to use for syslog. Defaults to info.

• librato_logging_logstash_log_level

  Type: string

  The log level to use for logstash. Defaults to info.

• librato_logging_logstash_filename

  Type: string

  The file name to use for logstash. Defaults to /opt/collectd/var/log/collectd.json.log

• librato_default_plugins

  Type: array

  A list of default plugins to include. Defaults to: cpu, disk, swap, memory, load.

• librato_enabled_plugins

  Type: array

  A list of plugins to enable. This is separate from the default plugins and is used to include plugins aside from those. Defaults to empty.

Supported Platforms

• RHEL 6 / CentOS 6
• RHEL 7 / CentOS 7
• Fedora 23
• Amazon Linux 2016.03
• Ubuntu 12.04
• Ubuntu 14.04
• Ubuntu 15.04
• Ubuntu 15.10
• Ubuntu 16.04
• Debian 7
• Debian 8

Supported Ansible Versions

This role requires Ansible 2.2 or later.

Development

Testing

Integration tests utilize kitchen-ansible and serverspec. To run the test suite:

1. Run bundle install
2. Run kitchen test. To run an individual test, run kitchen test [platform name]. E.g. kitchen test centos-7.

Testing Amazon Linux

Testing Amazon Linux through test-kitchen requires a bit more setup:

1. Ensure kitchen-ec2 is installed: gem install kitchen-ec2
2. Update .kitchen.yml to have the correct AWS key ID you're going to use
3. Set security_group_ids in the driver section to include a security group accessible from your laptop. Not setting this will use the default security group.
4. Set transport.ssh_key to the path of your SSH key. It looks for id_rsa by default.

License

MIT

Authors & Contributors

Mike Julian (@mjulian)