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Mysql(MGR)和ProxySQL搭建部署-Kubernetes版本

article 2025/1/5 8:44:34

一、Mysql(MGR)

1.1 statefulSet.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    app: mysql
  name: mysql
  namespace: yihuazt
spec:
  replicas: 3
  serviceName: mysql-headless
  selector:
       matchLabels:
         app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - mysql
            topologyKey: "kubernetes.io/hostname"
      containers:
      - name: mysql
        image: registry.harbor.com:30002/yihuazt/mysql:8.0.28
        resources:
          requests:
            cpu: "1"
            memory: "1024Mi"
        volumeMounts:
          - name: mysql-data
            mountPath: /var/lib/mysql/
          - name: mysql-cm
            mountPath: /etc/mysql/my.cnf
            subPathExpr: $(POD_NAME).cnf
          - name: mysql-cm
            mountPath: /docker-entrypoint-initdb.d/init.sql
            subPath: init.sql
          - name: mysql-cm
            mountPath: /var/lib/mysql-files/proxysql.sql
            subPath: proxysql.sql
        ports:
          - containerPort: 3306
          - containerPort: 24901
        env:
          - name: TZ
            value: "Asia/Shanghai"
          - name: MYSQL_ROOT_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mysql-cert
                key: password
          - name: POD_IP
            valueFrom:
              fieldRef:
                apiVersion: v1
                fieldPath: status.podIP
          - name: POD_NAME
            valueFrom:
              fieldRef:
                apiVersion: v1
                fieldPath: metadata.name
      volumes:
        - name: mysql-cm
          configMap:
           name: mysql-cm
           items:
           - key: mysql-0.cnf
             path: mysql-0.cnf
           - key: mysql-1.cnf
             path: mysql-1.cnf
           - key: mysql-2.cnf
             path: mysql-2.cnf
           - key: init.sql
             path: init.sql
           - key: proxysql.sql
             path: proxysql.sql
  volumeClaimTemplates:
  - metadata:
      name: mysql-data
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: 100Gi
      storageClassName: yihuazt-nfs
      volumeMode: Filesystem

1.2 service.yaml

apiVersion: v1
kind: Service
metadata:
  name: mysql-headless
  namespace: yihuazt
spec:
  ports:
    - name: mysql
      protocol: TCP
      port: 3306
      targetPort: 3306
    - name: mgr
      protocol: TCP
      port: 24901
      targetPort: 24901
  selector:
    app: mysql
  clusterIP: None
  type: ClusterIP

1.3 configMap.yaml

注意：

# 用于限制哪些 IP 地址或 IP 网段可以与 Group Replication 集群进行通信，由于k8s部署Pod是不同网段，跨网段的 MySQL 实例进行 Group Replication必须配置参数，指定哪些 IP 地址或子网允许连接。

  • loose-group_replication_ip_whitelist='10.244.0.0/16'

# 用于设置主机名（hostname）的配置参数。这个参数通常用于配置 MySQL Replication 环境中的主机名。如果未配置，MGR集群主机名与无头服务DNS不匹配，通讯失败。

  • report_host=mysql-1.mysql-headless.yihuazt.svc.cluster.local

# server_id一定不能设置为0

  • server_id=1
apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-cm
  namespace: yihuazt
  labels:
    app: mysql
data:
  mysql-0.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

    #
    # The MySQL  Server configuration file.
    #
    # For explanations see
    # http://dev.mysql.com/doc/mysql/en/server-system-variables.html

    [mysqld]
    pid-file        = /var/run/mysqld/mysqld.pid
    socket          = /var/run/mysqld/mysqld.sock
    datadir         = /var/lib/mysql
    secure-file-priv= NULL

    # Custom config should go here
    !includedir /etc/mysql/conf.d/
    default_authentication_plugin=mysql_native_password
    plugin_dir=/usr/lib/mysql/plugin
    server_id=1
    gtid_mode=ON
    enforce_gtid_consistency=ON
    binlog_checksum=NONE
    transaction_write_set_extraction=XXHASH64
    loose-group_replication_recovery_use_ssl=ON
    loose-group_replication_group_name="bbbbbbbb-bbbb-cccc-dddd-eeeeeeeeeeee"
    loose-group_replication_start_on_boot=OFF
    loose-group_replication_local_address="mysql-0.mysql-headless.yihuazt.svc.cluster.local:24901"
    loose-group_replication_group_seeds="mysql-0.mysql-headless.yihuazt.svc.cluster.local:24901,mysql-1.mysql-headless.yihuazt.svc.cluster.local:24901,mysql-2.mysql-headless.yihuazt.svc.cluster.local:24901"
    loose-group_replication_bootstrap_group=OFF
    loose-group_replication_ip_whitelist='10.244.0.0/16'
    report_host=mysql-0.mysql-headless.yihuazt.svc.cluster.local
  mysql-1.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

    #
    # The MySQL  Server configuration file.
    #
    # For explanations see
    # http://dev.mysql.com/doc/mysql/en/server-system-variables.html

    [mysqld]
    pid-file        = /var/run/mysqld/mysqld.pid
    socket          = /var/run/mysqld/mysqld.sock
    datadir         = /var/lib/mysql
    secure-file-priv= NULL

    # Custom config should go here
    !includedir /etc/mysql/conf.d/
    default_authentication_plugin=mysql_native_password
    plugin_dir=/usr/lib/mysql/plugin
    server_id=2
    gtid_mode=ON
    enforce_gtid_consistency=ON
    binlog_checksum=NONE
    loose-group_replication_recovery_get_public_key=ON
    loose-group_replication_recovery_use_ssl=ON
    loose-group_replication_group_name="bbbbbbbb-bbbb-cccc-dddd-eeeeeeeeeeee"
    loose-group_replication_start_on_boot=OFF
    loose-group_replication_local_address="mysql-1.mysql-headless.yihuazt.svc.cluster.local:24901"
    loose-group_replication_group_seeds="mysql-0.mysql-headless.yihuazt.svc.cluster.local:24901,mysql-1.mysql-headless.yihuazt.svc.cluster.local:24901,mysql-2.mysql-headless.yihuazt.svc.cluster.local:24901"
    loose-group_replication_bootstrap_group=OFF
    loose-group_replication_ip_whitelist='10.244.0.0/16'
    report_host=mysql-1.mysql-headless.yihuazt.svc.cluster.local
  mysql-2.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

    #
    # The MySQL  Server configuration file.
    #
    # For explanations see
    # http://dev.mysql.com/doc/mysql/en/server-system-variables.html

    [mysqld]
    pid-file        = /var/run/mysqld/mysqld.pid
    socket          = /var/run/mysqld/mysqld.sock
    datadir         = /var/lib/mysql
    secure-file-priv= NULL

    # Custom config should go here
    !includedir /etc/mysql/conf.d/
    default_authentication_plugin=mysql_native_password
    plugin_dir=/usr/lib/mysql/plugin
    server_id=3
    gtid_mode=ON
    enforce_gtid_consistency=ON
    binlog_checksum=NONE
    loose-group_replication_recovery_get_public_key=ON
    loose-group_replication_recovery_use_ssl=ON
    loose-group_replication_group_name="bbbbbbbb-bbbb-cccc-dddd-eeeeeeeeeeee"
    loose-group_replication_start_on_boot=OFF
    loose-group_replication_local_address="mysql-2.mysql-headless.yihuazt.svc.cluster.local:24901"
    loose-group_replication_group_seeds="mysql-0.mysql-headless.yihuazt.svc.cluster.local:24901,mysql-1.mysql-headless.yihuazt.svc.cluster.local:24901,mysql-2.mysql-headless.yihuazt.svc.cluster.local:24901"
    loose-group_replication_bootstrap_group=OFF
    loose-group_replication_ip_whitelist='10.244.0.0/16'
    report_host=mysql-2.mysql-headless.yihuazt.svc.cluster.local
  init.sql: |
    CREATE USER rpl_user@'%' IDENTIFIED BY 'asAS123456!';
    GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%';
    FLUSH PRIVILEGES;
    RESET MASTER;
    INSTALL PLUGIN group_replication SONAME 'group_replication.so';
    /*
    SELECT * FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME = 'group_replication' \G;
    */
    CHANGE MASTER TO MASTER_USER="rpl_user", MASTER_PASSWORD="asAS123456!" FOR CHANNEL 'group_replication_recovery';
    /*
    SET GLOBAL group_replication_bootstrap_group=ON;
    START GROUP_REPLICATION;
    SET GLOBAL group_replication_bootstrap_group=OFF;

    SELECT * FROM performance_schema.replication_group_members;
    */
  proxysql.sql: |
    /*
    mysql -uroot -prootmcafee123 < /var/lib/mysql-files/proxysql.sql
    */
    use sys;
    DELIMITER $$
    CREATE USER 'monitor'@'%' IDENTIFIED BY "monitor@1025";
    CREATE USER 'proxysql'@'%' IDENTIFIED BY "proxysql@1025";
    GRANT ALL PRIVILEGES ON *.* TO 'monitor'@'%' ;
    GRANT ALL PRIVILEGES ON *.* TO 'proxysql'@'%' ;
    FLUSH PRIVILEGES;
    CREATE FUNCTION my_id() RETURNS TEXT(36) DETERMINISTIC NO SQL RETURN (SELECT @@global.server_uuid as my_id);$$
    CREATE FUNCTION gr_member_in_primary_partition()
        RETURNS VARCHAR(3)
        DETERMINISTIC
        BEGIN
          RETURN (SELECT IF( MEMBER_STATE='ONLINE' AND ((SELECT COUNT(*) FROM
        performance_schema.replication_group_members WHERE MEMBER_STATE NOT IN ('ONLINE', 'RECOVERING')) >=
        ((SELECT COUNT(*) FROM performance_schema.replication_group_members)/2) = 0),
        'YES', 'NO' ) FROM performance_schema.replication_group_members JOIN
        performance_schema.replication_group_member_stats USING(member_id) where member_id=my_id());
    END$$
    CREATE VIEW gr_member_routing_candidate_status AS SELECT
    sys.gr_member_in_primary_partition() as viable_candidate,
    IF( (SELECT (SELECT GROUP_CONCAT(variable_value) FROM
    performance_schema.global_variables WHERE variable_name IN ('read_only',
    'super_read_only')) != 'OFF,OFF'), 'YES', 'NO') as read_only,
    Count_Transactions_Remote_In_Applier_Queue as transactions_behind, Count_Transactions_in_queue as 'transactions_to_cert'
    from performance_schema.replication_group_member_stats where member_id=my_id();$$

1.4 secret.yml

echo -n "rootmcafee123" | base64
echo "cm9vdG1jYWZlZTEyMw==" | base64 --decode

apiVersion: v1
kind: Secret
metadata:
  name: mysql-cert
  namespace: yihuazt
type: Opaque
data:
  password: cm9vdG1jYWZlZTEyMw==

二、ProxySQL

2.1 deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: proxysql
  namespace: yihuazt
spec:
  replicas: 1
  selector:
    matchLabels:
      app: proxysql
  template:
    metadata:
      labels:
        app: proxysql
    spec:
      containers:
        - name: proxysql
          image: registry.harbor.com:30002/yihuazt/proxysql:2.6.5
          ports:
            - containerPort: 6033
            - containerPort: 6032
            - containerPort: 6070
          env:
          - name: TZ
            value: "Asia/Shanghai"
          volumeMounts:
            - name: proxysql-data
              mountPath: /var/lib/proxysql
            - name: proxysql-config
              mountPath: /etc/proxysql.cnf
              subPath: proxysql.cnf
      volumes:
        - name: proxysql-config
          configMap:
              name: proxysql-cm
              items:
              - key: proxysql.cnf
                path: proxysql.cnf
        - name: proxysql-data
          persistentVolumeClaim:
            claimName: proxysql-pvc

2.2 service.yaml

apiVersion: v1
kind: Service
metadata:
  name: proxysql
  namespace: yihuazt
spec:
  selector:
    app: proxysql
  type: NodePort
  ports:
  - port: 6033
    targetPort: 6033
    nodePort: 30633
    name: external

2.3 persistentVolumeClaim.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: proxysql-pvc
  namespace: yihuazt
spec:
  storageClassName: "yihuazt-nfs"
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 30Gi

2.4 configMap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: proxysql-cm
  namespace: yihuazt
  labels:
    app: proxysql
data:
  proxysql.cnf: |
    #file proxysql.cfg

    ########################################################################################
    # This config file is parsed using libconfig , and its grammar is described in:        
    # http://www.hyperrealm.com/libconfig/libconfig_manual.html#Configuration-File-Grammar 
    # Grammar is also copied at the end of this file                                       
    ########################################################################################

    ########################################################################################
    # IMPORTANT INFORMATION REGARDING THIS CONFIGURATION FILE:                             
    ########################################################################################
    # On startup, ProxySQL reads its config file (if present) to determine its datadir. 
    # What happens next depends on if the database file (disk) is present in the defined
    # datadir (i.e. "/var/lib/proxysql/proxysql.db").
    #
    # If the database file is found, ProxySQL initializes its in-memory configuration from 
    # the persisted on-disk database. So, disk configuration gets loaded into memory and 
    # then propagated towards the runtime configuration. 
    #
    # If the database file is not found and a config file exists, the config file is parsed 
    # and its content is loaded into the in-memory database, to then be both saved on-disk 
    # database and loaded at runtime.
    #
    # IMPORTANT: If a database file is found, the config file is NOT parsed. In this case
    #            ProxySQL initializes its in-memory configuration from the persisted on-disk
    #            database ONLY. In other words, the configuration found in the proxysql.cnf
    #            file is only used to initial the on-disk database read on the first startup.
    #
    # In order to FORCE a re-initialise of the on-disk database from the configuration file 
    # the ProxySQL service should be started with "systemctl start proxysql-initial".
    #
    ########################################################################################

    datadir="/var/lib/proxysql"
    errorlog="/var/lib/proxysql/proxysql.log"

    admin_variables=
    {
      admin_credentials="admin:admin"
    #	mysql_ifaces="127.0.0.1:6032;/tmp/proxysql_admin.sock"
      mysql_ifaces="0.0.0.0:6032"
    #	refresh_interval=2000
    #	debug=true
    }

    mysql_variables=
    {
      threads=4
      max_connections=2048
      default_query_delay=0
      default_query_timeout=36000000
      have_compress=true
      poll_timeout=2000
    #	interfaces="0.0.0.0:6033;/tmp/proxysql.sock"
      interfaces="0.0.0.0:6033"
      default_schema="information_schema"
      stacksize=1048576
      server_version="8.0.28 (ProxySQL)"
      connect_timeout_server=3000
    # make sure to configure monitor username and password
    # https://github.com/sysown/proxysql/wiki/Global-variables#mysql-monitor_username-mysql-monitor_password
      monitor_username="monitor"
      monitor_password="monitor@1025"
      monitor_history=600000
      monitor_connect_interval=60000
      monitor_ping_interval=10000
      monitor_read_only_interval=1500
      monitor_read_only_timeout=500
      ping_interval_server_msec=120000
      ping_timeout_server=500
      commands_stats=true
      sessions_sort=true
      connect_retries_on_failure=10
    }


    # defines all the MySQL servers
    mysql_servers =
    (
    #	{
    #		address = "127.0.0.1" # no default, required . If port is 0 , address is interpred as a Unix Socket Domain
    #		port = 3306           # no default, required . If port is 0 , address is interpred as a Unix Socket Domain
    #		hostgroup = 0	        # no default, required
    #		status = "ONLINE"     # default: ONLINE
    #		weight = 1            # default: 1
    #		compression = 0       # default: 0
    #   max_replication_lag = 10  # default 0 . If greater than 0 and replication lag passes such threshold, the server is shunned
    #	},
    #	{
    #		address = "/var/lib/mysql/mysql.sock"
    #		port = 0
    #		hostgroup = 0
    #	},
    #	{
    #		address="127.0.0.1"
    #		port=21891
    #		hostgroup=0
    #		max_connections=200
    #	},
    #	{ address="127.0.0.2" , port=3306 , hostgroup=0, max_connections=5 },
    #	{ address="127.0.0.1" , port=21892 , hostgroup=1 },
    #	{ address="127.0.0.1" , port=21893 , hostgroup=1 }
    #	{ address="127.0.0.2" , port=3306 , hostgroup=1 },
    #	{ address="127.0.0.3" , port=3306 , hostgroup=1 },
    #	{ address="127.0.0.4" , port=3306 , hostgroup=1 },
    #	{ address="/var/lib/mysql/mysql.sock" , port=0 , hostgroup=1 }
        { address="mysql-0.mysql-headless.yihuazt.svc.cluster.local" , port=3306 , hostgroup=10 },  
        { address="mysql-1.mysql-headless.yihuazt.svc.cluster.local" , port=3306 , hostgroup=10 },  
        { address="mysql-2.mysql-headless.yihuazt.svc.cluster.local" , port=3306 , hostgroup=10 }
    )


    # defines all the MySQL users
    mysql_users:
    (
    #	{
    #		username = "username" # no default , required
    #		password = "password" # default: ''
    #		default_hostgroup = 0 # default: 0
    #		active = 1            # default: 1
    #	},
    #	{
    #		username = "root"
    #		password = ""
    #		default_hostgroup = 0
    #		max_connections=1000
    #		default_schema="test"
    #		active = 1
    #	},
    #	{ username = "user1" , password = "password" , default_hostgroup = 0 , active = 0 }
        {
            username = "proxysql"
            password = "proxysql@1025"
        active = 1
            default_hostgroup = 10
        transaction_persistent = 1
        }
    )



    #defines MySQL Query Rules
    mysql_query_rules:
    (
    #	{
    #		rule_id=1
    #		active=1
    #		match_pattern="^SELECT .* FOR UPDATE$"
    #		destination_hostgroup=0
    #		apply=1
    #	},
    #	{
    #		rule_id=2
    #		active=1
    #		match_pattern="^SELECT"
    #		destination_hostgroup=1
    #		apply=1
    #	}
        {
        rule_id=1
        active=1
        match_digest="^SELECT.*FOR UPDATE$"
        destination_hostgroup=10
        apply=1
      },
      {
        rule_id=2
        active=1
        match_digest="^SELECT"
        destination_hostgroup=30
        apply=1
      }
    )

    scheduler=
    (
    #  {
    #    id=1
    #    active=0
    #    interval_ms=10000
    #    filename="/var/lib/proxysql/proxysql_galera_checker.sh"
    #    arg1="0"
    #    arg2="0"
    #    arg3="0"
    #    arg4="1"
    #    arg5="/var/lib/proxysql/proxysql_galera_checker.log"
    #  }
    )


    mysql_replication_hostgroups=
    (
    #        {
    #                writer_hostgroup=30
    #                reader_hostgroup=40
    #                comment="test repl 1"
    #       },
    #       {
    #                writer_hostgroup=50
    #                reader_hostgroup=60
    #                comment="test repl 2"
    #        }
    )

    mysql_group_replication_hostgroups=
    (
            {
                    writer_hostgroup=10
            backup_writer_hostgroup=20
                    reader_hostgroup=30
            offline_hostgroup=40
            active=1
            max_writers=1
            writer_is_also_reader=0
            max_transactions_behind=100
            }
    )




    # http://www.hyperrealm.com/libconfig/libconfig_manual.html#Configuration-File-Grammar
    #
    # Below is the BNF grammar for configuration files. Comments and include directives are not part of the grammar, so they are not included here. 
    #
    # configuration = setting-list | empty
    #
    # setting-list = setting | setting-list setting
    #     
    # setting = name (":" | "=") value (";" | "," | empty)
    #     
    # value = scalar-value | array | list | group
    #     
    # value-list = value | value-list "," value
    #     
    # scalar-value = boolean | integer | integer64 | hex | hex64 | float
    #                | string
    #     
    # scalar-value-list = scalar-value | scalar-value-list "," scalar-value
    #     
    # array = "[" (scalar-value-list | empty) "]"
    #     
    # list = "(" (value-list | empty) ")"
    #     
    # group = "{" (setting-list | empty) "}"
    #     
    # empty =

运行方法与Docker部署一致，差异性的地方已经说明


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