Question

我正在尝试使用docker compose在本地Windows计算机上运行mariadb:10.2.14作为galera群集。运行初始boot节点工作正常，但第二个节点无法加入群集并出现错误：

node_1 | 2018-05-04 3:13:46 140187778701184 [Note] WSREP：view（（empty））

node_1 | 2018-05-04 3:13:46 140187778701184 [错误] WSREP：无法打开gcomm后端连接：110：无法访问主视图：110（连接超时）在gcomm / src / pc.cpp：connect（）： 158

node_1 | 2018-05-04 3:13:46 140187778701184 [错误] WSREP：gcs / src / gcs_core.cpp：gcs_core_open（）：208：无法打开后端连接：-110（连接超时）

node_1 | 2018-05-04 3:13:46 140187778701184 [错误] WSREP：gcs / src / gcs.cpp：gcs_open（）：1458：无法在'gcomm：// boot'打开通道'galera'： - 110（连接超时）

node_1 | 2018-05-04 3:13:46 140187778701184 [错误] WSREP：gcs连接失败：连接超时

node_1 | 2018-05-04 3:13:46 140187778701184 [错误] WSREP：wsrep :: connect（gcomm：// boot）失败：7

node_1 | 2018-05-04 3:13:46 140187778701184 [错误]中止

我在容器中运行ping boot以验证主机名是否已正确解析，但不确定无法连接的原因。我尝试将配置基于我在mariadb:10.1看到的各种docker文件，例如https://gist.github.com/lucidfrontier45/497341c4b848dfbd6dfb

我的码头撰写文件：

# Docker compose file for running a local MySQL server
version: '2.2'
services:
  boot:
    image: mariadb:10.2.14
    command: mysqld --user=mysql --wsrep_new_cluster
    environment:
      MYSQL_DATABASE: "db"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      # Needed because galera doesn't support MyISAM, which tzinfo uses
      MYSQL_INITDB_SKIP_TZINFO: "yes"
    ports:
      - ${SQL_PORT}:3306
      - 4444:4444
      - 4567:4567
      - 4568:4568
    networks:
      - sql
    volumes:
      - ./kubernetes/mariadb.conf.d:/etc/mysql/mariadb.conf.d
      - /var/lib/mysql
  node:
    image: mariadb:10.2.14
    command: mysqld --user=mysql --wsrep_cluster_address=gcomm://boot
    environment:
      MYSQL_DATABASE: "db"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      # Needed because galera doesn't support MyISAM, which tzinfo uses
      MYSQL_INITDB_SKIP_TZINFO: "yes"
    networks:
      - sql
    volumes:
      - ./kubernetes/mariadb.conf.d:/etc/mysql/mariadb.conf.d
      - /var/lib/mysql
networks:
  sql:

maraidb.conf.d中的配置文件：

# This will be passed to all mysql clients
[client]
default-character-set=utf8mb4

[mysql]
default-character-set=utf8mb4

# The MySQL server
[mysqld]
character-set-server=utf8mb4
collation-server=utf8mb4_unicode_ci
default_storage_engine=innodb
binlog_format=row
innodb_autoinc_lock_mode=2
innodb_flush_log_at_trx_commit=0

# Allow server to accept connections on all interfaces.
bind-address=0.0.0.0

#
# * Galera-related settings
#
# https://mariadb.com/kb/en/mariadb/galera-cluster-system-variables/
#
[galera]
wsrep_on=ON
wsrep_log_conflicts=ON
wsrep_provider=/usr/lib/galera/libgalera_smm.so
# TODO: is rsync the best option?
wsrep_sst_method=rsync

wsrep_cluster_name=galera
#wsrep_slave_threads=1

Answer 1

应该从galera集群创建的开头定义

wsrep_cluster_address参数。

这就是您需要执行以下操作的原因：

1。将wsrep_cluster_address添加到maraidb.conf.d中的配置文件中，所有节点都会获得它：

wsrep_cluster_address="gcomm://boot,node"

2。当我们在--wsrep_cluster_address容器中启动mysqld时，从mysql命令中删除node标记，因为我们已在配置：

version: '2.2'
services:
  boot:
    image: mariadb:10.2.14
    command: mysqld --user=mysql --wsrep_new_cluster
    environment:
      MYSQL_DATABASE: "db"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      # Needed because galera doesn't support MyISAM, which tzinfo uses
      MYSQL_INITDB_SKIP_TZINFO: "yes"
    ports:
      - ${SQL_PORT}:3306
      - 4444:4444
      - 4567:4567
      - 4568:4568
    networks:
      - sql
    volumes:
      - ./kubernetes/mariadb.conf.d:/etc/mysql/mariadb.conf.d
      - /var/lib/mysql
  node:
    image: mariadb:10.2.14
    command: mysqld --user=mysql
    environment:
      MYSQL_DATABASE: "db"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      # Needed because galera doesn't support MyISAM, which tzinfo uses
      MYSQL_INITDB_SKIP_TZINFO: "yes"
    networks:
      - sql
    volumes:
      - ./kubernetes/mariadb.conf.d:/etc/mysql/mariadb.conf.d
      - /var/lib/mysql
networks:
  sql:

Answer 2

谢谢@Nickolay，你的回答大多有效，但我遇到了另一个问题。它确实让我找到了解决问题的正确方法。

所以似乎主要的问题是--wsrep_new_cluster本身不足以引导节点，你需要设置wsrep_cluster_address变量。使用--wsrep_cluster_address=gcomm://设置它对我来说很有用。

此外，我遇到了似乎存在竞争条件的问题，并且第一个引导节点将无法初始化，并且错误表明它不是最后一个节点。我通过在第二个节点命令中使用短暂睡眠来修复此问题。

我的最终定位器撰写文件：

# Docker compose file for running a local mariadb galera cluster
version: '3.6'
services:
  boot:
    image: mariadb:10.2.14
    command: mysqld --user=mysql --wsrep_cluster_address=gcomm://
    environment:
      MYSQL_DATABASE: "db"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      # Needed because galera doesn't support MyISAM, which tzinfo uses
      MYSQL_INITDB_SKIP_TZINFO: "yes"
    ports:
      - ${SQL_PORT}:3306
      - 4444:4444
      - 4567:4567
      - 4568:4568
    volumes:
      - ./kubernetes/mariadb.conf.d:/etc/mysql/mariadb.conf.d
      - /var/lib/mysql
  node:
    image: mariadb:10.2.14
    command: bash -c "sleep 10; mysqld --user=mysql --wsrep_cluster_address=gcomm://boot"
    environment:
      MYSQL_DATABASE: "db"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
      # Needed because galera doesn't support MyISAM, which tzinfo uses
      MYSQL_INITDB_SKIP_TZINFO: "yes"
    volumes:
      - ./kubernetes/mariadb.conf.d:/etc/mysql/mariadb.conf.d
      - /var/lib/mysql

MariaDB galera集群10.2第二个节点“无法打开频道”

2 个答案: