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apache2_mod_proxy – Set and/or get members’ attributes of an Apache httpd 2.4 mod_proxy balancer pool

Synopsis

  • Set and/or get members’ attributes of an Apache httpd 2.4 mod_proxy balancer pool, using HTTP POST and GET requests. The httpd mod_proxy balancer-member status page has to be enabled and accessible, as this module relies on parsing this page. This module supports ansible check_mode, and requires BeautifulSoup python module.

Parameters

Parameter Choices/Defaults Comments
balancer_url_suffix
-
Default:
"/balancer-manager/"
Suffix of the balancer pool url required to access the balancer pool status page (e.g. balancer_vhost[:port]/balancer_url_suffix).
balancer_vhost
- / required
(ipv4|ipv6|fqdn):port of the Apache httpd 2.4 mod_proxy balancer pool.
member_host
-
(ipv4|ipv6|fqdn) of the balancer member to get or to set attributes to. Port number is autodetected and should not be specified here. If undefined, apache2_mod_proxy module will return a members list of dictionaries of all the current balancer pool members' attributes.
state
-
    Choices:
  • present
  • absent
  • enabled
  • disabled
  • drained
  • hot_standby
  • ignore_errors
Desired state of the member host. (absent|disabled),drained,hot_standby,ignore_errors can be simultaneously invoked by separating them with a comma (e.g. state=drained,ignore_errors).
tls
boolean
    Choices:
  • no ←
  • yes
Use https to access balancer management page.
validate_certs
boolean
    Choices:
  • no
  • yes ←
Validate ssl/tls certificates.

Examples

# Get all current balancer pool members' attributes:
- apache2_mod_proxy:
    balancer_vhost: 10.0.0.2

# Get a specific member's attributes:
- apache2_mod_proxy:
    balancer_vhost: myws.mydomain.org
    balancer_suffix: /lb/
    member_host: node1.myws.mydomain.org

# Enable all balancer pool members:
- apache2_mod_proxy:
    balancer_vhost: '{{ myloadbalancer_host }}'
  register: result
- apache2_mod_proxy:
    balancer_vhost: '{{ myloadbalancer_host }}'
    member_host: '{{ item.host }}'
    state: present
  with_items: '{{ result.members }}'

# Gracefully disable a member from a loadbalancer node:
- apache2_mod_proxy:
    balancer_vhost: '{{ vhost_host }}'
    member_host: '{{ member.host }}'
    state: drained
  delegate_to: myloadbalancernode
- wait_for:
    host: '{{ member.host }}'
    port: '{{ member.port }}'
    state: drained
  delegate_to: myloadbalancernode
- apache2_mod_proxy:
    balancer_vhost: '{{ vhost_host }}'
    member_host: '{{ member.host }}'
    state: absent
  delegate_to: myloadbalancernode

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description
member
dictionary
success
specific balancer member information dictionary, returned when apache2_mod_proxy module is invoked with member_host parameter.

Sample:
{'attributes': {'Busy': '0', 'Elected': '42', 'Factor': '1', 'From': '136K', 'Load': '0', 'Route': None, 'RouteRedir': None, 'Set': '0', 'Status': 'Init Ok ', 'To': ' 47K', 'Worker URL': None}, 'balancer_url': 'http://10.10.0.2/balancer-manager/', 'host': '10.10.0.20', 'management_url': 'http://10.10.0.2/lb/?b=mywsbalancer&w=http://10.10.0.20:8080/ws&nonce=8925436c-79c6-4841-8936-e7d13b79239b', 'path': '/ws', 'port': 8080, 'protocol': 'http', 'status': {'disabled': False, 'drained': False, 'hot_standby': False, 'ignore_errors': False}}
members
list
success
list of member (defined above) dictionaries, returned when apache2_mod_proxy is invoked with no member_host and state args.

Sample:
[{'attributes': {'Busy': '0', 'Elected': '42', 'Factor': '1', 'From': '136K', 'Load': '0', 'Route': None, 'RouteRedir': None, 'Set': '0', 'Status': 'Init Ok ', 'To': ' 47K', 'Worker URL': None}, 'balancer_url': 'http://10.10.0.2/balancer-manager/', 'host': '10.10.0.20', 'management_url': 'http://10.10.0.2/lb/?b=mywsbalancer&w=http://10.10.0.20:8080/ws&nonce=8925436c-79c6-4841-8936-e7d13b79239b', 'path': '/ws', 'port': 8080, 'protocol': 'http', 'status': {'disabled': False, 'drained': False, 'hot_standby': False, 'ignore_errors': False}}, {'attributes': {'Busy': '0', 'Elected': '42', 'Factor': '1', 'From': '136K', 'Load': '0', 'Route': None, 'RouteRedir': None, 'Set': '0', 'Status': 'Init Ok ', 'To': ' 47K', 'Worker URL': None}, 'balancer_url': 'http://10.10.0.2/balancer-manager/', 'host': '10.10.0.21', 'management_url': 'http://10.10.0.2/lb/?b=mywsbalancer&w=http://10.10.0.21:8080/ws&nonce=8925436c-79c6-4841-8936-e7d13b79239b', 'path': '/ws', 'port': 8080, 'protocol': 'http', 'status': {'disabled': False, 'drained': False, 'hot_standby': False, 'ignore_errors': False}}]


Status

Authors

  • Olivier Boukili (@oboukili)

Hint

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© 2012–2018 Michael DeHaan
© 2018–2019 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.9/modules/apache2_mod_proxy_module.html