https://github.com/mrlesmithjr/ansible-pacemaker
https://github.com/mrlesmithjr/ansible-pacemaker
ansible ansible-role cluster pacemaker
Last synced: 8 months ago
JSON representation
- Host: GitHub
- URL: https://github.com/mrlesmithjr/ansible-pacemaker
- Owner: mrlesmithjr
- License: mit
- Created: 2015-11-13T07:52:32.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2021-04-23T17:16:10.000Z (almost 5 years ago)
- Last Synced: 2025-04-10T05:40:26.297Z (12 months ago)
- Topics: ansible, ansible-role, cluster, pacemaker
- Language: Jinja
- Size: 22.5 KB
- Stars: 16
- Watchers: 5
- Forks: 15
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
- [ansible-pacemaker](#ansible-pacemaker)
- [Requirements](#requirements)
- [Pacemaker cluster](#pacemaker-cluster)
- [Number of Nodes](#number-of-nodes)
- [OS requirements](#os-requirements)
- [macOS](#macos)
- [Role Variables](#role-variables)
- [Dependencies](#dependencies)
- [Example Playbook](#example-playbook)
- [License](#license)
- [Author Information](#author-information)
# ansible-pacemaker
An [Ansible](https://www.ansible.com) role to install/configure [pacemaker/corosync](http://clusterlabs.org).
## Requirements
### Pacemaker cluster
The following requirements are specific requirements for cluster setup.
#### Number of Nodes
- Up to 16 nodes per cluster.
- Minimum number of nodes: 3.
- 2 nodes cluster could be configured but is not recommended.
### OS requirements
The following requirements are specific to OS deployments.
#### macOS
- [Python passlib module](http://docs.ansible.com/ansible/faq.html#how-do-i-generate-crypted-passwords-for-the-user-module)
```bash
pip install passlib
```
## Role Variables
```yaml
---
# defaults file for ansible-pacemaker
corosync_authkey_file: '/etc/corosync/authkey'
# Defines interface used for cluster
corosync_bindnet_interface: 'enp0s8'
corosync_config_file: '/etc/corosync/corosync.conf'
# Defines the number of nodes to be functional in order to avoid split-brain
# scenarios...ex. 2-nodes = 1, 3-nodes = 2
corosync_expected_votes: "{{ ( groups[pacemaker_cluster_group]|count /2 ) | round (0, 'ceil') | int }}"
# Corosync itself works without a cluster name, but DLM needs one.
# The cluster name is also written into the VG metadata of newly
# created shared LVM volume groups, if lvmlockd uses DLM locking.
# It is also used for computing mcastaddr, unless overridden below.
corosync_cluster_name: 'debian'
# Setting corosync_last_man_standing to true enables the Last Man Standing (LMS) feature;
# by default, it is disabled (set to false)
corosync_last_man_standing: true
# Define multicast address to use for cluster
# this should be unique per cluster
corosync_mcastaddr: 239.255.42.1
# Define port number to configure as cluster port.
corosync_mcastport: 5405
# Defines if unicast mode should be used rather than multicast
corosync_unicast_mode: false
# Means that, When starting up a cluster (all nodes down), the cluster quorum
# is held until all nodes are online and have joined the cluster for the first
# time. This parameter is new in Corosync 2.0.
corosync_wait_for_all: true
pacemaker_cluster_constraints: []
# - constraint: 'colocation'
# action: 'add'
# source_resource_id: 'webserver'
# target_resource_id: 'virtual_ip'
# score: 'INFINITY'
# - constraint: 'order'
# order:
# first_resource: 'virtual_ip'
# first_resource_action: 'start'
# second_resource: 'webserver'
# second_resource_action: 'start'
pacemaker_cluster_group: 'ha_cluster'
pacemaker_cluster_resources: []
# - resource_id: 'virtual_ip'
# action: 'create'
# provider: 'ocf:heartbeat:IPaddr2'
# options:
# - 'ip=192.168.250.200'
# - 'cidr_netmask=24'
# op: 'monitor'
# op_options:
# - 'interval=30s'
# - resource_id: 'webserver'
# action: 'create'
# provider: 'ocf:heartbeat:nginx'
# options:
# - 'configfile=/etc/nginx/nginx.conf'
# op: 'monitor'
# op_options:
# - 'timeout=5s'
# - 'interval=5s'
# NOT RECOMMENDED FOR PRODUCTION!!!!!
# You must have a STONITH device to enable....
pacemaker_disable_stonith: true
# Define specific cluster settings to configure
pacemaker_cluster_settings: []
# - property: 'start-failure-is-fatal'
# value: 'false'
# - property: 'pe-warn-series-max'
# value: 1000
# - property: 'pe-input-series-max'
# value: 1000
# - property: 'pe-error-series-max'
# value: 1000
# - property: 'cluster-recheck-interval'
# value: 5min
# Define hacluster user password for webUI
#
# Generate new password
# echo "haclusteradmin" | sha512sum
pacemaker_hacluster_password: 'f8d1feb7105dfbd2859a17512c7414f89b70dfef815b177444b897edec19a18724f8e9686f0e2daa41c48eb9b0511bae9e659a756f17c39fedb6d68b9230a53c'
# Defines if host is considered to be primary
# this should be set in host_vars/hostname as true for only one host
pacemaker_primary_server: '{{ groups[pacemaker_cluster_group][0] }}'
```
## Dependencies
None
## Example Playbook
```yaml
---
- hosts: ha_cluster
vars:
etc_hosts_add_all_hosts: true
pacemaker_cluster_constraints:
- constraint: 'colocation'
action: 'add'
source_resource_id: 'webserver'
target_resource_id: 'virtual_ip'
score: 'INFINITY'
- constraint: 'order'
order:
first_resource: 'virtual_ip'
first_resource_action: 'start'
second_resource: 'webserver'
second_resource_action: 'start'
pacemaker_cluster_resources:
- resource_id: 'virtual_ip'
action: 'create'
provider: 'ocf:heartbeat:IPaddr2'
options:
- 'ip=192.168.250.200'
- 'cidr_netmask=24'
op: 'monitor'
op_options:
- 'interval=30s'
- resource_id: 'webserver'
action: 'create'
provider: 'ocf:heartbeat:nginx'
options:
- 'configfile=/etc/nginx/nginx.conf'
op: 'monitor'
op_options:
- 'timeout=5s'
- 'interval=5s'
pacemaker_cluster_settings:
- property: 'start-failure-is-fatal'
value: 'false'
- property: 'pe-warn-series-max'
value: 1000
- property: 'pe-input-series-max'
value: 1000
- property: 'pe-error-series-max'
value: 1000
- property: 'cluster-recheck-interval'
value: 5min
pri_domain_name: 'test.vagrant.local'
roles:
- role: ansible-apt-sources
- role: ansible-motd
- role: ansible-ntp
- role: ansible-timezone
become: true
- role: ansible-etc-hosts
- role: ansible-pacemaker
tags:
- pacemaker
- role: ansible-nginx
tasks:
```
## License
MIT
## Author Information
Larry Smith Jr.
- [@mrlesmithjr](https://www.twitter.com/mrlesmithjr)
- [EverythingShouldBeVirtual](http://everythingshouldbevirtual.com)
- mrlesmithjr [at] gmail.com