From 72186949017382c3f36db8e37f62a4640ee7a497 Mon Sep 17 00:00:00 2001 From: Egon Rijpkema Date: Wed, 18 Oct 2017 09:23:04 +0200 Subject: [PATCH] The galera cnf can be the same template across... nodes. --- mariadb.yml | 12 +++--- roles/mariadb/files/galera.cnf | 20 +++++++++ roles/mariadb/tasks/main.yml | 32 ++++++++------- roles/mariadb/templates/mysql.service | 8 ++-- secrets.yml | 58 +++++++++++++-------------- 5 files changed, 77 insertions(+), 53 deletions(-) create mode 100644 roles/mariadb/files/galera.cnf diff --git a/mariadb.yml b/mariadb.yml index 2432187..bbf78bb 100644 --- a/mariadb.yml +++ b/mariadb.yml @@ -5,9 +5,9 @@ roles: - mariadb vars: - hostname_node0: "{{ hostvars[groups['mariadb'][0]]['ansible_hostname'] }}" - hostname_node1: "{{ hostvars[groups['mariadb'][1]]['ansible_hostname'] }}" - hostname_node2: "{{ hostvars[groups['mariadb'][2]]['ansible_hostname'] }}" - ip_node0: "hostvars[groups['databases'][0]]['listen_ip'] | default(hostvars[groups['databases'][0]]['ansible_default_ipv4']['address'])" - ip_node1: "hostvars[groups['databases'][1]]['listen_ip'] | default(hostvars[groups['databases'][1]]['ansible_default_ipv4']['address'])" - ip_node2: "hostvars[groups['databases'][2]]['listen_ip'] | default(hostvars[groups['databases'][2]]['ansible_default_ipv4']['address'])" + hostname_node0: "{{ hostvars[groups['databases'][0]]['ansible_hostname'] }}" + hostname_node1: "{{ hostvars[groups['databases'][1]]['ansible_hostname'] }}" + hostname_node2: "{{ hostvars[groups['databases'][2]]['ansible_hostname'] }}" + ip_node0: "{{ hostvars[groups['databases'][0]]['listen_ip'] | default(hostvars[groups['databases'][0]]['ansible_default_ipv4']['address']) }}" + ip_node1: "{{ hostvars[groups['databases'][1]]['listen_ip'] | default(hostvars[groups['databases'][1]]['ansible_default_ipv4']['address']) }}" + ip_node2: "{{ hostvars[groups['databases'][2]]['listen_ip'] | default(hostvars[groups['databases'][2]]['ansible_default_ipv4']['address']) }}" diff --git a/roles/mariadb/files/galera.cnf b/roles/mariadb/files/galera.cnf new file mode 100644 index 0000000..6b27f64 --- /dev/null +++ b/roles/mariadb/files/galera.cnf @@ -0,0 +1,20 @@ +[mysqld] +binlog_format=ROW +default-storage-engine=innodb +innodb_autoinc_lock_mode=2 +bind-address=0.0.0.0 + +# Galera Provider Configuration +wsrep_on=ON +wsrep_provider=/usr/lib/galera/libgalera_smm.so + +# Galera Cluster Configuration +wsrep_cluster_name="test_cluster" +wsrep_cluster_address="gcomm://{{ ip_node0 }},{{ ip_node1 }},{{ ip_node2 }}" + +# Galera Synchronization Configuration +wsrep_sst_method=rsync + +# Galera Node Configuration +wsrep_node_address="{{ listen_ip | default(ansible_default_ipv4.address) }}" +wsrep_node_name="{{ ansible_nodename }}" diff --git a/roles/mariadb/tasks/main.yml b/roles/mariadb/tasks/main.yml index d28b8a3..9a5c8fe 100644 --- a/roles/mariadb/tasks/main.yml +++ b/roles/mariadb/tasks/main.yml @@ -13,9 +13,6 @@ owner: root group: root -- name: start service at boot. - command: systemctl reenable mysql.service - - name: make mariadb settings volume file: path: "{{ item }}" @@ -24,30 +21,35 @@ with_items: - /srv/mariadb/lib/mysql - /srv/mariadb/etc/mysql + - /srv/mariadb/etc/mysql/conf.d - name: place settings file copy: src: files/my.cnf - dest: /srv/mariadb/etc/mysql + dest: /srv/mariadb/etc/mysql/conf.d/my.cnf mode: 660 -- name: Set galara.cnf on first node if we have at least three nodes. - copy: - src: files/galera-master.cnf +- name: Set galara.cnf on node if we have at least three nodes. + template: + src: files/galera.cnf dest: /srv/mariadb/etc/mysql/conf.d/galera.cnf mode: 660 - when: ansible_nodename == hostname_node0 and hostvars[groups['mariadb']]|length >= 3 - -- name: Set galara.cnf on other nodes if we have at least three nodes. - copy: - src: files/galera-slave.cnf - dest: /srv/mariadb/etc/mysql/conf.d/galera.cnf - mode: 660 - when: ansible_nodename != hostname_node0 and hostvars[groups['mariadb']]|length >= 3 + when: groups['databases'] | length >= 3 - command: systemctl daemon-reload +- name: start service at boot. + command: systemctl reenable mysql.service + +# This mimics galera_new_cluster.sh +- name: Initialize a new cluster. + command: systemctl set-environment _WSREP_NEW_CLUSTER='--wsrep-new-cluster' + when: groups['databases'] | length >= 3 and ansible_hostname == hostname_node0 + - name: make sure service is started systemd: name: mysql.service state: started + +- name: Prevent cluster re-initialization + command: systemctl set-environment _WSREP_NEW_CLUSTER='' diff --git a/roles/mariadb/templates/mysql.service b/roles/mariadb/templates/mysql.service index 530de12..4a5fdca 100644 --- a/roles/mariadb/templates/mysql.service +++ b/roles/mariadb/templates/mysql.service @@ -9,10 +9,12 @@ Restart=always ExecStartPre=-/usr/bin/docker kill %n || /bin/true ExecStartPre=-/usr/bin/docker rm %n ExecStartPre=/usr/bin/docker pull mariadb:10.2 -ExecStart=/usr/bin/docker run -p 3306:3306 --name %n \ +ExecStart=/usr/bin/docker run --name %n \ + -p 3306:3306 -p 4567:4567 -p 4568:4568 -p 4444:4444 \ -v /srv/mariadb/lib/mysql:/var/lib/mysql \ - -v /srv/mariadb/etc/mysql:/etc/mysql \ - -e MYSQL_ROOT_PASSWORD={{ secrets['MYSQL_ROOT_PASSWORD'] }} mariadb:10.2 + -v /srv/mariadb/etc/mysql/conf.d:/etc/mysql/conf.d \ + -e MYSQL_ROOT_PASSWORD={{ secrets['MYSQL_ROOT_PASSWORD'] }} mariadb:10.2 \ + ${MYSQLD_OPTS} ${_WSREP_NEW_CLUSTER} ${_WSREP_START_POSITION} [Install] WantedBy=multi-user.target diff --git a/secrets.yml b/secrets.yml index 91d5517..4d811f4 100644 --- a/secrets.yml +++ b/secrets.yml @@ -1,30 +1,30 @@ $ANSIBLE_VAULT;1.1;AES256 -62633134346438356462333363626164393762356139653666323461333037393536373631653565 -6631306631333538353534663738313062636232633339610a303161323131373739393735666463 -65353135626430353737373239623361306137326334333761626235353463393465383830666666 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