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| Deletions are marked like this. | Additions are marked like this. |
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| apt-get install mariadb-server | apt-get install mariadb-server rsync |
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| Stop mariadb on all nodes. {{{ service mariadb stop }}} Add the configuration for galera to `/etc/mysql/conf.d/galera.cnf`. Replace names so they fit the current node. {{{ [galera] wsrep_on=ON wsrep_provider=/usr/lib/galera/libgalera_smm.so wsrep_cluster_address=gcomm://mariadb01,mariadb02,mariadb03 wsrep_node_address=mariadb01 wsrep_node_name=mariadb01.kallenberg.dk binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 # Custom settings wsrep_cluster_name="mariadb_galera" wsrep_sst_method=rsync bind-address=0.0.0.0 }}} On the first node the cluster is started. {{{ galera_new_cluster }}} On additional nodes the service is started. {{{ service mariadb start }}} |
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| * https://blog.cloudandheat.com/index.php/en/2016/09/09/tutorial-simple-mariadb-galera-cluster-with-haproxy-load-balancing/ |
incomplete, do not use!
Mariadb
What we really want to set up is a galera cluster. We will use 3 systems for this
- 192.168.1.55 mariadb01
- 192.168.1.56 mariadb02
- 192.168.1.57 mariadb03
Software
apt-get install mariadb-server rsync
Configuration
Stop mariadb on all nodes.
service mariadb stop
Add the configuration for galera to /etc/mysql/conf.d/galera.cnf. Replace names so they fit the current node.
[galera] wsrep_on=ON wsrep_provider=/usr/lib/galera/libgalera_smm.so wsrep_cluster_address=gcomm://mariadb01,mariadb02,mariadb03 wsrep_node_address=mariadb01 wsrep_node_name=mariadb01.kallenberg.dk binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 # Custom settings wsrep_cluster_name="mariadb_galera" wsrep_sst_method=rsync bind-address=0.0.0.0
On the first node the cluster is started.
galera_new_cluster
On additional nodes the service is started.
service mariadb start