mysql skip slave_MYSQL replication slave-skip-errors 详解

建用户的时候报告这个错误,原因是mysql中已经有了这个用户,可以从mysql.user中直接删除,然后刷新权限,再建用户就不会有这个问题了。如果是drop

user先,那么mysql内部应该会自动刷新一下,那么再建也不会有这问题了。

一个老外遇到了这个问题,给了个例子。他就是没有刷新权限,才导致了这问题。

mysql> CREATE USER 'jack'@'localhost' IDENTIFIED BY 'test123'; Query OK, 0 rows

affected (0.00 sec) mysql> select user,host from user; +------------------+-----------------+ | user | host | +------------------+-----------------+ | root | 127.0.0.1 | | debian-sys-maint | localhost | | jack | localhost | | root | localhost | | root | russ-elite-book | +------------------+-----------------+ 5 rows in set (0.00 sec) mysql> delete from user where user = 'jack'; Query OK, 1 row

affected (0.00 sec) mysql> select user,host from user; +------------------+-----------------+ | user | host | +------------------+-----------------+ | root | 127.0.0.1 | | debian-sys-maint | localhost | | root | localhost | | root | russ-elite-book | +------------------+-----------------+ 4 rows in set (0.00 sec) mysql> CREATE USER 'jack'@'localhost' IDENTIFIED BY 'test123'; ERROR 1396 (HY000): Operation CREATE

这里应该:FLUSH

PRIVILEGES

mysql> CREATE USER 'jimmy'@'localhost' IDENTIFIED BY 'test123'; Query OK, 0 rows

affected (0.00 sec) mysql> select user,host from user; +------------------+-----------------+ | user | host | +------------------+-----------------+ | root | 127.0.0.1 | | debian-sys-maint | localhost | | jimmy | localhost | | root | localhost | | root | russ-elite-book | +------------------+-----------------+ 5 rows in set (0.00 sec)

RROR 126 (HY000): Incorrect key file for table

'/tmp/#sql_6f81_0.MYI'; try to repair it

使用MySQL的业务,大多都会用到MySQL的Replication,做读写分离,HA,热备份或者增量都少不了利用主从机制.

不过,很多情况下都会报 1032 和 1052 错误.

首先1032.

Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND;

造成1032错误的根本原因是主从数据库数据不一致,导致同步操作在从库上无法执行.

目前我所遇到的情况分为两种:

1 Replication 时使用了

主--binlog-ignore-db=db_name或者从--replicate-ignore-db=db_name.

假设 有两个库 pubs 和 test,忽略的是test,结果有这样一条sql 在 主上的test库执行:insert into

pubs.tname values(XXXXX);

那么根据服务的配置,主上执行成功,从上没有执行,就会引发1032错误

2 TRIGGER 和

PROCEDURE的版本问题,如果在主从上版本不一致,例如主上的某个PROCEDURE执行后写入了5条数据,而从上执行后只写入了1行数据,这时,必然会引发1032错误

解决方法:

1 不使用 --binlog-ignore-db 和 --replicate-ignore-db=db_name

改为 从上 --replicate-wild-ignore-table=db_name.%

2 保证 主从 TRIGGER 和 PROCEDURE的版本一致

再说说 1052:

这个错误就比较好理解了,一般都是主上的操作连接是autocommit的,结果运行超时失败,从库上进行同步时就会报错.

两种做法:

1 在主上设置my.cnf innodb_rollback_on_timeout=1,超时时rollback

2 在从上忽略1052.my.cnf--slave-skip-errors=1052

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mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_euc-jp/unk.dic mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/char.bin mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/dicrc mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/left-id.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/matrix.bin mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/pos-id.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/rewrite.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/right-id.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/sys.dic mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_sjis/unk.dic mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/char.bin mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/dicrc mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/left-id.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/matrix.bin mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/pos-id.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/rewrite.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/right-id.def mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/sys.dic mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/dic/ipadic_utf-8/unk.dic mysql-5.7.41-linux-glibc2.12-x86_64/lib/mecab/etc/mecabrc mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/adt_null.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/auth_socket.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/authentication_ldap_sasl_client.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/connection_control.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/adt_null.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/auth_socket.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/authentication_ldap_sasl_client.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/connection_control.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/group_replication.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/ha_example.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/innodb_engine.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/keyring_file.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/keyring_udf.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libmemcached.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libpluginmecab.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_framework.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_services.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_services_threaded.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_session_detach.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_session_in_thd.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_session_info.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_2_sessions.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_all_col_types.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_cmds_1.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_commit.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_complex.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_errors.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_lock.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_processlist.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_replication.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_shutdown.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_sqlmode.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_stored_procedures_functions.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_sql_views_triggers.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_x_sessions_deinit.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/libtest_x_sessions_init.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/locking_service.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/mypluglib.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/mysql_no_login.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/mysqlx.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/rewrite_example.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/rewriter.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/semisync_master.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/semisync_slave.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/test_security_context.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/test_udf_services.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/validate_password.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/debug/version_token.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/group_replication.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/ha_example.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/innodb_engine.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/keyring_file.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/keyring_udf.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libmemcached.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libpluginmecab.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_framework.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_services.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_services_threaded.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_session_detach.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_session_in_thd.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_session_info.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_2_sessions.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_all_col_types.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_cmds_1.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_commit.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_complex.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_errors.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_lock.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_processlist.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_replication.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_shutdown.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_sqlmode.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_stored_procedures_functions.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_sql_views_triggers.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_x_sessions_deinit.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/libtest_x_sessions_init.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/locking_service.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/mypluglib.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/mysql_no_login.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/mysqlx.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/rewrite_example.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/rewriter.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/semisync_master.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/semisync_slave.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/test_security_context.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/test_udf_services.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/validate_password.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/plugin/version_token.so mysql-5.7.41-linux-glibc2.12-x86_64/share/bulgarian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/Index.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/README mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/armscii8.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/ascii.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp1250.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp1251.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp1256.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp1257.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp850.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp852.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/cp866.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/dec8.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/geostd8.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/greek.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/hebrew.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/hp8.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/keybcs2.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/koi8r.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/koi8u.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/latin1.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/latin2.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/latin5.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/latin7.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/macce.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/macroman.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/charsets/swe7.xml mysql-5.7.41-linux-glibc2.12-x86_64/share/czech/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/danish/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/dictionary.txt mysql-5.7.41-linux-glibc2.12-x86_64/share/dutch/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/english/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/errmsg-utf8.txt mysql-5.7.41-linux-glibc2.12-x86_64/share/estonian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/fill_help_tables.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/french/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/german/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/greek/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/hungarian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/innodb_memcached_config.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/italian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/japanese/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/korean/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/mysql_security_commands.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/mysql_sys_schema.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/mysql_system_tables.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/mysql_system_tables_data.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/mysql_test_data_timezone.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/norwegian-ny/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/norwegian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/polish/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/portuguese/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/romanian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/russian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/serbian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/slovak/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/spanish/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/swedish/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/share/ukrainian/errmsg.sys mysql-5.7.41-linux-glibc2.12-x86_64/support-files/mysql-log-rotate mysql-5.7.41-linux-glibc2.12-x86_64/support-files/mysqld_multi.server mysql-5.7.41-linux-glibc2.12-x86_64/lib/libmysqlclient.so mysql-5.7.41-linux-glibc2.12-x86_64/lib/libmysqlclient.so.20 mysql-5.7.41-linux-glibc2.12-x86_64/lib/libmysqlclient.so.20.3.28 mysql-5.7.41-linux-glibc2.12-x86_64/share/install_rewriter.sql mysql-5.7.41-linux-glibc2.12-x86_64/share/uninstall_rewriter.sql mysql-5.7.41-linux-glibc2.12-x86_64/support-files/magic mysql-5.7.41-linux-glibc2.12-x86_64/support-files/mysql.server
06-24
以下是我的mysql的yaml文件代码,请你根据这个写出Redis的yaml文件: # 创建命名空间 apiVersion: v1 kind: Namespace metadata: name: mysql-server --- # 主库PV - 部署到k8smaster apiVersion: v1 kind: PersistentVolume metadata: name: mysql-master-pv labels: app: mysql role: master spec: capacity: storage: 10Gi volumeMode: Filesystem accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain local: path: /root/mysql_k8s/mysql-master nodeAffinity: required: nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/hostname operator: In values: - k8smaster --- # 从库1 PV - 部署到k8snode1 apiVersion: v1 kind: PersistentVolume metadata: name: mysql-slave1-pv labels: app: mysql role: slave spec: capacity: storage: 10Gi volumeMode: Filesystem accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain local: path: /root/mysql_k8s/mysql-slave1 nodeAffinity: required: nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/hostname operator: In values: - k8snode1 --- # 从库2 PV - 部署到k8snode2 apiVersion: v1 kind: PersistentVolume metadata: name: mysql-slave2-pv labels: app: mysql role: slave spec: capacity: storage: 10Gi volumeMode: Filesystem accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Retain local: path: /root/mysql_k8s/mysql-slave2 nodeAffinity: required: nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/hostname operator: In values: - k8snode2 --- # 主库PVC apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-master-pvc namespace: mysql-server spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi selector: matchLabels: app: mysql role: master --- # 从库1 PVC apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-slave1-pvc namespace: mysql-server spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi selector: matchLabels: app: mysql role: slave --- # 从库2 PVC apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-slave2-pvc namespace: mysql-server spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi selector: matchLabels: app: mysql role: slave --- # 配置文件 apiVersion: v1 kind: ConfigMap metadata: name: mysql-config namespace: mysql-server data: my_master.conf: |- [mysqld] server_id=1 log-bin=mysql-bin binlog-ignore-db=mysql binlog-ignore-db=information_schema binlog-do-db=test binlog_format=ROW expire_logs_days=7 max_binlog_size=100M symbolic-links=0 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES my_slave1.conf: |- [mysqld] server_id=2 relay-log=relay-bin log-bin=mysql-slave1-bin read_only=1 log_slave_updates=1 slave-skip-errors=1032,1062,1007,1050 symbolic-links=0 my_slave2.conf: |- [mysqld] server_id=3 relay-log=relay-bin log-bin=mysql-slave2-bin read_only=1 log_slave_updates=1 slave-skip-errors=1032,1062,1007,1050 symbolic-links=0 --- # 主库Service apiVersion: v1 kind: Service metadata: name: mysql-master namespace: mysql-server spec: selector: app: mysql mysql: master ports: - port: 3306 targetPort: 3306 clusterIP: None --- # 从库Service apiVersion: v1 kind: Service metadata: name: mysql-slaves namespace: mysql-server spec: selector: app: mysql mysql: slave ports: - port: 3306 targetPort: 3306 clusterIP: None --- # 主库Deployment apiVersion: apps/v1 kind: Deployment metadata: name: mysql-master namespace: mysql-server spec: replicas: 1 selector: matchLabels: app: mysql mysql: master template: metadata: labels: app: mysql mysql: master spec: tolerations: - key: "node-role.kubernetes.io/master" operator: "Exists" effect: "NoSchedule" nodeSelector: kubernetes.io/hostname: k8smaster containers: - name: mysql-master image: mysql:5.7 ports: - containerPort: 3306 name: mysql-port env: - name: MYSQL_ROOT_PASSWORD value: root - name: MYSQL_DATABASE value: test # 主库自动创建test数据库 volumeMounts: - name: mysql-master-storage mountPath: /var/lib/mysql - name: mysql-config mountPath: /etc/mysql/conf.d/my.cnf subPath: my.cnf livenessProbe: exec: command: ["mysqladmin", "ping", "-uroot", "-proot"] initialDelaySeconds: 30 periodSeconds: 10 readinessProbe: exec: command: ["mysqladmin", "ping", "-uroot", "-proot"] initialDelaySeconds: 5 periodSeconds: 5 volumes: - name: mysql-master-storage persistentVolumeClaim: claimName: mysql-master-pvc - name: mysql-config configMap: name: mysql-config items: - key: my_master.conf path: my.cnf --- # 从库1 Deployment apiVersion: apps/v1 kind: Deployment metadata: name: mysql-slave1 namespace: mysql-server spec: replicas: 1 selector: matchLabels: app: mysql mysql: slave slave-id: "1" template: metadata: labels: app: mysql mysql: slave slave-id: "1" spec: nodeSelector: kubernetes.io/hostname: k8snode1 containers: - name: mysql-slave1 image: mysql:5.7 ports: - containerPort: 3306 name: mysql-port env: - name: MYSQL_ROOT_PASSWORD value: root - name: MASTER_HOST value: mysql-master - name: MASTER_USER value: repl - name: MASTER_PASSWORD value: replpass volumeMounts: - name: mysql-slave-storage mountPath: /var/lib/mysql - name: mysql-slave-config mountPath: /etc/mysql/conf.d/my.cnf subPath: my.cnf - name: init-scripts mountPath: /docker-entrypoint-initdb.d livenessProbe: exec: command: ["mysqladmin", "ping", "-uroot", "-proot"] initialDelaySeconds: 30 periodSeconds: 10 readinessProbe: exec: command: ["mysqladmin", "ping", "-uroot", "-proot"] initialDelaySeconds: 5 periodSeconds: 5 volumes: - name: mysql-slave-storage persistentVolumeClaim: claimName: mysql-slave1-pvc - name: mysql-slave-config configMap: name: mysql-config items: - key: my_slave1.conf path: my.cnf - name: init-scripts configMap: name: slave-init-scripts --- # 从库2 Deployment apiVersion: apps/v1 kind: Deployment metadata: name: mysql-slave2 namespace: mysql-server spec: replicas: 1 selector: matchLabels: app: mysql mysql: slave slave-id: "2" template: metadata: labels: app: mysql mysql: slave slave-id: "2" spec: nodeSelector: kubernetes.io/hostname: k8snode2 containers: - name: mysql-slave2 image: mysql:5.7 ports: - containerPort: 3306 name: mysql-port env: - name: MYSQL_ROOT_PASSWORD value: root - name: MASTER_HOST value: mysql-master - name: MASTER_USER value: repl - name: MASTER_PASSWORD value: replpass volumeMounts: - name: mysql-slave-storage mountPath: /var/lib/mysql - name: mysql-slave-config mountPath: /etc/mysql/conf.d/my.cnf subPath: my.cnf - name: init-scripts mountPath: /docker-entrypoint-initdb.d livenessProbe: exec: command: ["mysqladmin", "ping", "-uroot", "-proot"] initialDelaySeconds: 30 periodSeconds: 10 readinessProbe: exec: command: ["mysqladmin", "ping", "-uroot", "-proot"] initialDelaySeconds: 5 periodSeconds: 5 volumes: - name: mysql-slave-storage persistentVolumeClaim: claimName: mysql-slave2-pvc - name: mysql-slave-config configMap: name: mysql-config items: - key: my_slave2.conf path: my.cnf - name: init-scripts configMap: name: slave-init-scripts --- # 从库初始化脚本(已包含创建test数据库的步骤) apiVersion: v1 kind: ConfigMap metadata: name: slave-init-scripts namespace: mysql-server data: init-slave.sh: |- #!/bin/bash set -e # 等待主库就绪 until mysql -h$MASTER_HOST -uroot -p$MYSQL_ROOT_PASSWORD -e "SELECT 1"; do echo "等待主库就绪..." sleep 5 done # 关键步骤:在从库创建test数据库,与主库保持一致 mysql -uroot -p$MYSQL_ROOT_PASSWORD -e "CREATE DATABASE IF NOT EXISTS test;" # 在主库创建复制用户 mysql -h$MASTER_HOST -uroot -p$MYSQL_ROOT_PASSWORD -e "CREATE USER IF NOT EXISTS '$MASTER_USER'@'%' IDENTIFIED BY '$MASTER_PASSWORD'; GRANT REPLICATION SLAVE ON *.* TO '$MASTER_USER'@'%'; FLUSH PRIVILEGES;" # 获取主库日志位置 MASTER_STATUS=$(mysql -h$MASTER_HOST -uroot -p$MYSQL_ROOT_PASSWORD -e "SHOW MASTER STATUS\G" | grep -E 'File|Position') MASTER_LOG_FILE=$(echo "$MASTER_STATUS" | grep File | awk '{print $2}') MASTER_LOG_POS=$(echo "$MASTER_STATUS" | grep Position | awk '{print $2}') # 配置从库复制 mysql -uroot -p$MYSQL_ROOT_PASSWORD -e "CHANGE MASTER TO MASTER_HOST='$MASTER_HOST', MASTER_USER='$MASTER_USER', MASTER_PASSWORD='$MASTER_PASSWORD', MASTER_LOG_FILE='$MASTER_LOG_FILE', MASTER_LOG_POS=$MASTER_LOG_POS; START SLAVE;" # 检查复制状态 mysql -uroot -p$MYSQL_ROOT_PASSWORD -e "SHOW SLAVE STATUS\G"
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