Ansible role to install and configure a Galera cluster powered by MariaDB
# Set the package install state for distribution packages
# Options are 'present' and 'latest'
galera_server_package_state: "latest"
galera_cluster_members: "{{ groups['galera_all'] }}"
galera_server_bootstrap_node: "{{ galera_cluster_members[0] }}"
galera_ignore_cluster_state: false
galera_upgrade: false
galera_wsrep_node_name: "{{ inventory_hostname }}"
galera_cluster_name: openstack_galera_cluster
# This variable will prevent the galera_cluster_name from changing unintentionally on a running cluster.
# To intentionally change the galera_cluster_name set this variable to True
galera_force_change_cluster_name: False
# The galera server-id should be set on all cluster nodes to ensure
# that replication is handled correctly and the error
# "Warning: You should set server-id to a non-0 value if master_host is
# set; we will force server id to 2, but this MySQL server will not act
# as a slave." is no longer present.
# galera_server_id: 0
# These are here to stub out the internal ROLE API.
# if these are used they should be set within the
# distro specific variable files found in vars/
galera_debconf_items: []
galera_server_percona_distro_packages: []
# Set the URL for the MariaDB repository
galera_repo_url: "{{ _galera_repo_url }}"
# Set the repo information for the MariaDB repository
galera_repo: "{{ _galera_repo }}"
# Set the gpg keys needed to be imported
galera_gpg_keys: "{{ _galera_gpg_keys }}"
# Set the URL for the Percona Xtrabackup repository
galera_percona_xtrabackup_repo_url: "{{ _galera_percona_xtrabackup_repo_url }}"
# Set the rpo information for the Percona Xtrabackup repository
galera_percona_xtrabackup_repo: "{{ _galera_percona_xtrabackup_repo }}"
# Enable the use of the upstream percona repo
use_percona_upstream: "{{ _use_percona_upstream }}"
galera_existing_cluster: true
galera_running_and_bootstrapped: false
galera_monitoring_user: monitoring
galera_monitoring_user_password: ""
# WARNING: Set this to open xinetd rules for galera monitoring.
# This is REQUIRED to run a working openstack-ansible deployment.
# If it's undefined the galera cluster state can't be reported,
# and haproxy would fail to do proper load balancing on the cluster.
# Because this opens connections to the cluster status, this
# should be restricted, which we do in the integrated build.
# Please override accordingly to your use case.
# This can be replaced with other hostnames, cidr, ips, and ips + wildcards.
#
#galera_monitoring_allowed_source: "0.0.0.0/0"
galera_root_user: root
# WARNING: This option is deprecated and will be removed in v12.0
galera_gcache_size: 1024M
galera_max_heap_table_size: 32M
galera_tmp_table_size: 32M
galera_file_limits: 65535
galera_wait_timeout: 3600
## innodb options
galera_innodb_buffer_pool_size: 4096M
galera_innodb_log_file_size: 1024M
galera_innodb_log_buffer_size: 128M
## wsrep configuration
galera_wsrep_address: "{{ ansible_host }}"
galera_wsrep_cluster_address: "{% if galera_cluster_members | length > 1 %}{% for host in galera_cluster_members %}{{ hostvars[host]['ansible_host'] }}{% if not loop.last %},{% endif %}{% endfor %}{% endif %}"
galera_wsrep_node_incoming_address: "{{ galera_wsrep_address }}"
galera_wsrep_slave_threads: "{{ (ansible_processor_vcpus | int > 0) | ternary (ansible_processor_vcpus, 2) }}"
galera_wsrep_retry_autocommit: 3
galera_wsrep_debug: 0
galera_wsrep_sst_method: xtrabackup-v2
galera_wsrep_provider_options:
- { option: "gcache.size", value: "{{ galera_gcache_size }}" }
galera_wsrep_sst_auth_user: "root"
galera_wsrep_sst_auth_password: "{{ galera_root_password }}"
# xtrabackup parallel/compression/sync threads
galera_xtrabackup_threads: 4
galera_pip_packages:
- MySQL-python
- pycrypto
# Galera slow/unindexed query logging
galera_slow_query_logging: 0
galera_unindexed_query_logging: 0
## Tunable overrides
galera_my_cnf_overrides: {}
galera_cluster_cnf_overrides: {}
galera_debian_cnf_overrides: {}
# Set the max connections value for galera. Set this value to override the
# computed value which is (100 x vCPUs). If computed, the lowest value throughout
# the cluster will be used which is something to note if deploying galera on different
# hardware.
# galera_max_connections: 500
using_mysql_init: no
# Settings for percona and qpress
# The [percona|qpress]_arch_[url|sha256] hashes can be found in the distro vars files.
galera_package_arch: "{{ hostvars[inventory_hostname]['ansible_architecture'] }}"
# Validate SSL certificates when downloading the galera deb above
# May be set to "no" when proxy server is intercepting the certificates.
percona_package_download_validate_certs: yes
percona_package_url: "{{ percona_arch_url.get( galera_package_arch | lower ) }}"
percona_package_sha256: "{{ percona_arch_sha256.get( galera_package_arch | lower ) }}"
percona_package_path: "/opt/{{ percona_package_url | basename }}"
qpress_package_download_validate_certs: yes
qpress_package_url: "{{ qpress_arch_url.get( galera_package_arch | lower ) }}"
qpress_package_sha256: "{{ qpress_arch_sha256.get( galera_package_arch | lower ) }}"
qpress_package_path: "/opt/{{ qpress_package_url | basename }}"
# This is only applied if the ansible_pkg_mgr is 'apt'
galera_server_distro_package_pins: [{ package: "*", release: MariaDB, priority: "1001" }]
# Galera Server SSL functionality.
galera_use_ssl: false
galera_ssl_cert: /etc/mysql/ssl/galera.pem
galera_ssl_key: /etc/mysql/ssl/galera.key
galera_ssl_ca_cert: /etc/mysql/ssl/galera-ca.pem
# These options should be specified in user_variables if necessary, otherwise self-signed certs are used.
galera_user_ssl_cert: /etc/openstack_deploy/self_signed_certs/galera.pem
galera_user_ssl_key: /etc/openstack_deploy/self_signed_certs/galera.key
galera_user_ssl_ca_cert: /etc/openstack_deploy/self_signed_certs/galera-ca.pem
# Set galera_ssl_self_signed_regen to true if you want to generate a new
# SSL certificate for Galera when this playbook runs. You can also change
# the subject of the self-signed certificate here if you prefer.
galera_ssl_self_signed_regen: false
galera_ssl_self_signed_subject: "/C=US/ST=Texas/L=San Antonio/O=IT/CN={{ galera_ssl_address }}"
galera_ssl_ca_self_signed_subject: "/C=US/ST=Texas/L=San Antonio/O=IT"
# This option is used for creating the CA and overriding the Galera address on the clients side.
# Should be set to either public VIP of VIP FQDN, depending on what is currently used in the env.
galera_ssl_address: "{{ ansible_host }}"
- name: Install Galera server
hosts: galera_all
user: root
roles:
- { role: "galera_server" }
vars:
galera_root_password: secrete