133 lines
3.5 KiB
Markdown
133 lines
3.5 KiB
Markdown
# eole-mariadb
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Début des travaux pour l'utilisation de mariadb
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dans Eole avec des fonctionalitées avancées du type
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mise en clustter
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# How-to for Eole 2.6.2 (using this repo dico and templates)
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### FIXME
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# How-to for Eole 2.6.2 (From scratch)
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## Sources
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* https://mariadb.com/kb/en/library/getting-started-with-mariadb-galera-cluster/
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* https://mariadb.com/kb/en/library/installing-mariadb-deb-files/#installing-mariadb-galera-cluster-with-apt-get
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* https://downloads.mariadb.org/mariadb/repositories/#mirror=ovh&distro=Ubuntu&distro_release=xenial--ubuntu_xenial&version=10.2
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* http://galeracluster.com/documentation-webpages/?id=galera_parameters_0.8
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* https://mariadb.com/kb/en/library/mariadb-galera-cluster-known-limitations/
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* https://www.howtoforge.com/tutorial/how-to-install-and-configure-galera-cluster-on-ubuntu-1604/
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## Requirements
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* 2 eolebase 2.6.2 servers
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## Adding MariaDB (Galera) cluster repository (on each server)
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GenConfig (Mode Expert) -> Dépôt tiers :
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* Libellé du dépôt : MariaDB
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* Déclaration du dépôt : deb [arch=amd64] http://mariadb.mirrors.ovh.net/MariaDB/repo/10.2/ubuntu xenial main
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* Méthode de récupération de la clé publique du dépôt : serveur de clés
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* URL du serveur de clés : hkp://keyserver.ubuntu.com:80
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* Empreinte de la clé : 0xF1656F24C74CD1D8
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## Installing MariaDB software on the First Node aka "Node1"
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* Query-Auto
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* apt install mariadb-server
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### Secure MariaDB installation
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* mysql_secure_installation
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### Configure the Master
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* vim /etc/mysql/conf.d/galera.cnf
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```
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[mysqld]
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binlog_format=ROW
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default-storage-engine=innodb
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innodb_autoinc_lock_mode=2
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bind-address=0.0.0.0
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# Galera Provider Configuration
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wsrep_on=ON
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wsrep_provider=/usr/lib/galera/libgalera_smm.so
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# Galera Cluster Configuration
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wsrep_cluster_name="eole_cluster"
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wsrep_cluster_address="gcomm://<IP_NODE1>,<IP_NODE2>"
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# Galera Synchronization Configuration
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wsrep_sst_method=rsync
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# Galera Node Configuration
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wsrep_node_address="<IP_NODE1>"
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wsrep_node_name="Node1"
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```
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### Open Firewall ports
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* 3306/tcp
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* 4444/tcp
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* 4567/tcp
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* 4568/tcp
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* 4567/udp
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### Bootstraping the new cluster
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* systemctl stop mariadb
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* galera_new_cluster
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### Check cluster size
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* mysql -u root -p -e "show status like 'wsrep_cluster_size'"
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```
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+--------------------+-------+
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| Variable_name | Value |
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+--------------------+-------+
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| wsrep_cluster_size | 1 |
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+--------------------+-------+
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```
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## Installing MariaDB software in the Second node aka "Node2"
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* Query-Auto
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* apt install mariadb-server
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### Secure MariaDB installation
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* mysql_secure_installation
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### Configure the Master
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* vim /etc/mysql/conf.d/galera.cnf
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```
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[mysqld]
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binlog_format=ROW
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default-storage-engine=innodb
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innodb_autoinc_lock_mode=2
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bind-address=0.0.0.0
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# Galera Provider Configuration
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wsrep_on=ON
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wsrep_provider=/usr/lib/galera/libgalera_smm.so
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# Galera Cluster Configuration
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wsrep_cluster_name="eole_cluster"
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wsrep_cluster_address="gcomm://<IP_NODE1>,<IP_NODE2>"
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# Galera Synchronization Configuration
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wsrep_sst_method=rsync
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# Galera Node Configuration
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wsrep_node_address="<IP_NODE2>"
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wsrep_node_name="Node2"
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```
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### Open Firewall ports
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* 3306/tcp
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* 4444/tcp
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* 4567/tcp
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* 4568/tcp
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* 4567/udp
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### Restart MariaDB
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* systemctl restart mysql
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### Check Cluster Size
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* mysql -u root -p -e "show status like 'wsrep_cluster_size'"
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```
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+--------------------+-------+
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| Variable_name | Value |
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+--------------------+-------+
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| wsrep_cluster_size | 2 |
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+--------------------+-------+
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```
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