Docker Compose：Percona XtraDB 集群引導

Question

我需要幫助。 如何在 docker-compose 上引導Percona XtraDB 集群作為第一個節點？

我有這個my.cnf文件

wsrep_provider=/usr/lib64/galera3/libgalera_smm.so
wsrep_cluster_name=pxc-cluster
wsrep_cluster_address=gcomm://192.168.56.15,192.168.56.20,192.168.56.25
wsrep_node_name=pxc1
wsrep_node_address=192.168.56.15
wsrep_sst_method=xtrabackup-v2
wsrep_sst_auth=xtrabackup:1q2w3e4r
pxc_strict_mode=ENFORCING
!include /etc/mysql/node.cnf

和docker-compose.yml

version: '2'
services:
    percona-xtradb-cluster:
        container_name: pxc_node
        image: 'percona/percona-xtradb-cluster:5.7'
        environment:
            - MYSQL_ROOT_PASSWORD=root
            - CLUSTER_NAME=pxc-cluster
            - XTRABACKUP_PASSWORD=1q2w3e4r
        ports:
            - 3306:3306
            - 4567:4567
            - 4568:4568
            - 4444:4444
        volumes:
            - /etc/percona.d/my.cnf:/etc/my.cnf

運行sudo docker-compose up -d

Answer 1

根據手冊，似乎你應該只在第一台服務器啟動后才啟動第二台和第三台服務器，所以，你的 docker compose 應該是這樣的

version: '2'
services:
    percona-xtradb-cluster:
        container_name: pxc_node
        image: 'percona/percona-xtradb-cluster:5.7'
        environment:
            - MYSQL_ROOT_PASSWORD=root
            - CLUSTER_NAME=pxc-cluster
            - XTRABACKUP_PASSWORD=1q2w3e4r
        ports:
            - 3306:3306
            - 4567:4567
            - 4568:4568
            - 4444:4444
        volumes:
            - /etc/percona.d/my.cnf:/etc/my.cnf

    percona-xtradb-server1:
        depends_on: 
          - percona-xtradb-cluster
        container_name: pxc_node1
        image: 'percona/percona-xtradb-cluster:5.7'
        environment:
            - MYSQL_ROOT_PASSWORD=root
            - CLUSTER_NAME=pxc-cluster
            - CLUSTER_JOIN=pxc_node
            - XTRABACKUP_PASSWORD=1q2w3e4r
        volumes:
            - /etc/percona.d/my.cnf:/etc/my.cnf

    percona-xtradb-server2:
        depends_on: 
          - percona-xtradb-cluster
        container_name: pxc_node2
        image: 'percona/percona-xtradb-cluster:5.7'
        environment:
            - MYSQL_ROOT_PASSWORD=root
            - CLUSTER_NAME=pxc-cluster
            - XTRABACKUP_PASSWORD=1q2w3e4r
            - CLUSTER_JOIN=pxc_node
        volumes:
            - /etc/percona.d/my.cnf:/etc/my.cnf

注意depends字段 - 它們很重要 - 請參閱文檔。 並看到CLUSTER_JOIN=pxc_node存在，它們指示要加入的服務器