MySQLCluster
Nous allons mettre en place un cluster MySQL basé sur MySQL Cluster.
Mise en place du réseau
docker network create cluster --subnet=192.168.0.0/16Puis récupérons les fichiers ou recopier les fichier de configuration:
https://github.com/mysql/mysql-docker/tree/mysql-clusterLe fichier my.cnf est ainsi:
# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
[mysqld]
ndbcluster
ndb-connectstring=192.168.0.2
user=mysql
[mysql_cluster]
ndb-connectstring=192.168.0.2et le fichier mysqlcluster.cnf
# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
[ndbd default]
NoOfReplicas=2
DataMemory=80M
IndexMemory=18M
[ndb_mgmd]
NodeId=1
hostname=192.168.0.2
datadir=/var/lib/mysql
[ndbd]
NodeId=2
hostname=192.168.0.3
datadir=/var/lib/mysql
[ndbd]
NodeId=3
hostname=192.168.0.4
datadir=/var/lib/mysql
[mysqld]
NodeId=4
hostname=192.168.0.10
Lancement du noeud de management
docker run -d --net=cluster --name=management1 --ip=192.168.0.2 mysql/mysql-cluster ndb_mgmdPuis lancons les noeud de données:
docker run -d --net=cluster --name=ndb1 --ip=192.168.0.3 mysql/mysql-cluster ndbd
docker run -d --net=cluster --name=ndb2 --ip=192.168.0.4 mysql/mysql-cluster ndbdEt enfin on peux executer le noeud SQL:
docker run -d --net=cluster --name=mysql1 --ip=192.168.0.10 -e MYSQL_RANDOM_ROOT_PASSWORD=true mysql/mysql-cluster mysqld
Ce noeud va générer un password aléatoire :
docker logs mysql1 2>&1 | grep PASSWORD
[Entrypoint] GENERATED ROOT PASSWORD: =EbISQomAxvOmnam4d9EJigIjwA
Changement du mot de passe:
docker exec -it mysql1 mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 5.7.30-ndb-7.6.14-cluster-gpl MySQL Cluster Community Server (GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
Query OK, 0 rows affected (0.06 sec)
Le management du cluster se fait via :
docker run -it --net=cluster mysql/mysql-cluster ndb_mgm
La modification du fichier mysqlcluster.cnf permet de rajouter un noeud de donnée et de relancer
docker run -d --net=cluster --name=management1 --ip=192.168.0.2 -v /home/pilou/Formation/cluster/mysql-cluster.cnf:/etc/mysql-cluster.cnf mysql/mysql-cluster ndb_mgmd
9ac595c65ddf47568f20fa835e10d45d0e7adcaf40bab818ac94b9afd20524ec
pilou@pilou-pc:~/Formation/cluster$ docker logs management1[Entrypoint] MySQL Docker Image 7.6.14-1.1.16-cluster
[Entrypoint] Starting ndb_mgmd
MySQL Cluster Management Server mysql-5.7.30 ndb-7.6.14
2020-06-09 20:25:07 [MgmtSrvr] INFO -- The default config directory '/usr/mysql-cluster' does not exist. Trying to create it...
2020-06-09 20:25:07 [MgmtSrvr] INFO -- Sucessfully created config directory
2020-06-09 20:25:07 [MgmtSrvr] WARNING -- at line 19: [DB] IndexMemory is deprecated, will use Number bytes on each ndbd(DB) node allocated for storing indexes instead
2020-06-09 20:25:07 [MgmtSrvr] INFO -- Got initial configuration from '/etc/mysql-cluster.cnf', will try to set it when all ndb_mgmd(s) started
2020-06-09 20:25:07 [MgmtSrvr] INFO -- Node 1: Node 1 Connected
2020-06-09 20:25:07 [MgmtSrvr] INFO -- Id: 1, Command port: *:1186
==INITIAL==
2020-06-09 20:25:07 [MgmtSrvr] INFO -- MySQL Cluster Management Server mysql-5.7.30 ndb-7.6.14 started
2020-06-09 20:25:08 [MgmtSrvr] INFO -- Node 1 connected
2020-06-09 20:25:08 [MgmtSrvr] INFO -- Starting initial configuration change
2020-06-09 20:25:08 [MgmtSrvr] INFO -- Configuration 1 commited
2020-06-09 20:25:08 [MgmtSrvr] INFO -- Config change completed! New generation: 1
==CONFIRMED==