mysql 8.0.18 mgr 搭建及其切换功能
一、系统安装包
yum-yinstallmakegcc-c++cmakebison-develncurses-develreadline-devellibaio-develperllibaiowgetlrzszvimlibnuma*bzip2xz
二、关闭防火墙和selinux
sed-i's/SELINUX=enforcing/SELINUX=disabled/'/etc/selinux/config setenforce0 /etc/init.d/iptablesstop echo"/etc/init.d/iptablesstop">>/etc/rc.local
三、修改系统限制参数
cat>>/etc/security/limits.conf<四、配置每台hosts主机解析
cat>>/etc/hosts<<"EOF" 10.10.146.28bj-db-m1 10.10.1.139bj-db-m2 10.10.173.84bj-db-m3 EOF五、修改内核参数
cat>>/etc/sysctl.conf<<"EOF" vm.swappiness=0 #增加tcp支持的队列数 net.ipv4.tcp_max_syn_backlog=65535 #减少断开连接时，资源回收 net.ipv4.tcp_max_tw_buckets=8000 net.ipv4.tcp_tw_reuse=1 net.ipv4.tcp_tw_recycle=1 net.ipv4.tcp_fin_timeout=10 #改变本地的端口范围 net.ipv4.ip_local_port_range=102465535 #允许更多的连接进入队列 net.ipv4.tcp_max_syn_backlog=4096 #对于只在本地使用的数据库服务器 net.ipv4.tcp_fin_timeout=30 #端口监听队列 net.core.somaxconn=65535 #接受数据的速率 net.core.netdev_max_backlog=65535 net.core.wmem_default=87380 net.core.wmem_max=16777216 net.core.rmem_default=87380 net.core.rmem_max=16777216 EOF sysctl-p六、下载安装包
wgethttps://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz #解压安装包 tar-xJfmysql-8.0.18-linux-glibc2.12-x86_64.tar.xz #进入目录，做软连接，方便以后升级 cd/usr/local/ ln-s/opt/mysql-8.0.18-linux-glibc2.12-x86_64mysql #创建用户 groupaddmysql useradd-gmysqlmysql-d/home/mysql-s/sbin/nologin #创建相应的目录 mkdir-p/data/mysql/mysql_3306/{logs,tmp,undolog}七、创建my.cnf配置文件
7-1、第一台配置
#第一台 if[-f/etc/my.cnf];then mv/etc/my.cnf/etc/my.cnf.`date+%Y%m%d%H%m`.bak fi #node1 cat>/data/mysql/mysql_3306/my_3306.cnf<<"EOF" [client] port=3306 socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock [mysql] prompt="\u@\h\R:\m:\s[\d]>" no-auto-rehash [mysqld] user=mysql port=3306 admin_address=127.0.0.1 basedir=/usr/local/mysql datadir=/data/mysql/mysql_3306/data socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock pid-file=mysql_3306.pid character-set-server=utf8mb4 skip_name_resolve=1 #replicate-wild-ignore-table=mysql.% #replicate-wild-ignore-table=test.% #replicate-wild-ignore-table=information_schema.% #Two-Masterconfigure #server-1 #auto-increment-offset=1 #auto-increment-increment=2 #server-2 #auto-increment-offset=2 #auto-increment-increment=2 #semisyncreplicationsettings# #plugin_dir=/usr/local/mysql/lib/mysql/plugin #plugin_load="validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" plugin_dir=/usr/local/mysql/lib/plugin#官方版本的路径 plugin_load="rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"#官方版本的路径 slave_parallel_workers=4 slave_parallel_type=LOGICAL_CLOCK slave_preserve_commit_order=1 open_files_limit=65535 back_log=1024 max_connections=1024 max_connect_errors=1000000 table_open_cache=1024 table_definition_cache=1024 table_open_cache_instances=64 thread_stack=512K external-locking=FALSE max_allowed_packet=32M sort_buffer_size=4M join_buffer_size=4M thread_cache_size=1536 interactive_timeout=600 wait_timeout=600 tmp_table_size=32M max_heap_table_size=32M slow_query_log=1 log_timestamps=SYSTEM slow_query_log_file=/data/mysql/mysql_3306/logs/slow.log log-error=/data/mysql/mysql_3306/logs/error.log long_query_time=0.1 log_queries_not_using_indexes=1 log_throttle_queries_not_using_indexes=60 min_examined_row_limit=100 log_slow_admin_statements=1 log_slow_slave_statements=1 server-id=1423306 log-bin=/data/mysql/mysql_3306/logs/mysql-bin sync_binlog=1 binlog_cache_size=4M max_binlog_cache_size=2G max_binlog_size=1G binlog_expire_logs_seconds=2592000 master_info_repository=TABLE relay_log_info_repository=TABLE gtid_mode=on enforce_gtid_consistency=1 binlog_checksum=NONE log_slave_updates slave-rows-search-algorithms='INDEX_SCAN,HASH_SCAN' binlog_format=row binlog_row_image=FULL relay_log_recovery=1 relay-log-purge=1 key_buffer_size=32M read_buffer_size=8M read_rnd_buffer_size=4M bulk_insert_buffer_size=64M myisam_sort_buffer_size=128M myisam_max_sort_file_size=10G myisam_repair_threads=1 lock_wait_timeout=3600 explicit_defaults_for_timestamp=1 innodb_thread_concurrency=0 innodb_sync_spin_loops=100 innodb_spin_wait_delay=30 #transaction_isolation=REPEATABLE-READ transaction_isolation=READ-COMMITTED #innodb_additional_mem_pool_size=16M innodb_buffer_pool_size=2867M innodb_buffer_pool_instances=4 innodb_buffer_pool_load_at_startup=1 innodb_buffer_pool_dump_at_shutdown=1 innodb_data_file_path=ibdata1:1G:autoextend innodb_flush_log_at_trx_commit=1 innodb_log_buffer_size=32M innodb_log_file_size=2G innodb_log_files_in_group=3 innodb_max_undo_log_size=4G innodb_undo_directory=/data/mysql/mysql_3306/undolog #根据您的服务器IOPS能力适当调整 #一般配普通SSD盘的话，可以调整到10000-20000 #配置高端PCIeSSD卡的话，则可以调整的更高，比如50000-80000 innodb_io_capacity=4000 innodb_io_capacity_max=8000 innodb_flush_sync=0 innodb_flush_neighbors=0 innodb_write_io_threads=8 innodb_read_io_threads=8 innodb_purge_threads=4 innodb_page_cleaners=4 innodb_open_files=65535 innodb_max_dirty_pages_pct=50 innodb_flush_method=O_DIRECT innodb_lru_scan_depth=4000 innodb_checksum_algorithm=crc32 innodb_lock_wait_timeout=10 innodb_rollback_on_timeout=1 innodb_print_all_deadlocks=1 innodb_file_per_table=1 innodb_online_alter_log_max_size=4G innodb_stats_on_metadata=0 #somevarforMySQL8 log_error_verbosity=3 innodb_print_ddl_logs=1 binlog_expire_logs_seconds=2592000 #innodb_dedicated_server=0 innodb_status_file=1 #注意:开启innodb_status_output&innodb_status_output_locks后,可能会导致log-error文件增长较快 innodb_status_output=0 innodb_status_output_locks=0 #performance_schema performance_schema=1 performance_schema_instrument='%memory%=on' performance_schema_instrument='%lock%=on' #innodbmonitor innodb_monitor_enable="module_innodb" innodb_monitor_enable="module_server" innodb_monitor_enable="module_dml" innodb_monitor_enable="module_ddl" innodb_monitor_enable="module_trx" innodb_monitor_enable="module_os" innodb_monitor_enable="module_purge" innodb_monitor_enable="module_log" innodb_monitor_enable="module_lock" innodb_monitor_enable="module_buffer" innodb_monitor_enable="module_index" innodb_monitor_enable="module_ibuf_system" innodb_monitor_enable="module_buffer_page" innodb_monitor_enable="module_adaptive_hash" #MGR #GR配置项基中loose前缀表示若groupReplicationplugin未加载mysqlserver仍明治维新启动 transaction_write_set_extraction=XXHASH64#对每个事务获取writeset，并且用XXHASH64算法获取hash值 loose-group_replication_group_name="58f6e65e-9309-11e9-9d88-525400184a0a"#组名，此处可拿selectuuid()生成 loose-group_replication_start_on_boot=off#在mysqld启动时不自动启动组复制 loose-group_replication_local_address="10.10.146.28:33006"#本节点的IP地址和端口，注意该端口是组内成员之间通信的端口，而不是MySQL对外提供服务的端口 loose-group_replication_group_seeds="10.10.146.28:33006,10.10.1.139:33006,10.10.173.84:33006"#种子节点的IP和端口号，新成员加入到集群的时候需要联系种子节点，启动集群的节点不使用该选项 loose-group_replication_bootstrap_group=off#关闭，如果打开会造成脑裂#是否启动集群，注意，该选项任何时候只能用于一个节点，通常情况下启动集群的时候使用，启动之后需要关闭该选项 loose-group_replication_member_weight=50#权重选择 [mysqldump] quick max_allowed_packet=32M [mysqld_safe] #malloc-lib=/usr/local/mysql/lib/jmalloc.so nice=-19 open-files-limit=65535 EOF
7-2、第二台配置
#第二台 if[-f/etc/my.cnf];then mv/etc/my.cnf/etc/my.cnf.`date+%Y%m%d%H%m`.bak fi #node1 cat>/data/mysql/mysql_3306/my_3306.cnf<<"EOF" [client] port=3306 socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock [mysql] prompt="\u@\h\R:\m:\s[\d]>" no-auto-rehash [mysqld] user=mysql port=3306 admin_address=127.0.0.1 basedir=/usr/local/mysql datadir=/data/mysql/mysql_3306/data socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock pid-file=mysql_3306.pid character-set-server=utf8mb4 skip_name_resolve=1 #replicate-wild-ignore-table=mysql.% #replicate-wild-ignore-table=test.% #replicate-wild-ignore-table=information_schema.% #Two-Masterconfigure #server-1 #auto-increment-offset=1 #auto-increment-increment=2 #server-2 #auto-increment-offset=2 #auto-increment-increment=2 #semisyncreplicationsettings# #plugin_dir=/usr/local/mysql/lib/mysql/plugin #plugin_load="validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" plugin_dir=/usr/local/mysql/lib/plugin#官方版本的路径 plugin_load="rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"#官方版本的路径 slave_parallel_workers=4 slave_parallel_type=LOGICAL_CLOCK slave_preserve_commit_order=1 open_files_limit=65535 back_log=1024 max_connections=1024 max_connect_errors=1000000 table_open_cache=1024 table_definition_cache=1024 table_open_cache_instances=64 thread_stack=512K external-locking=FALSE max_allowed_packet=32M sort_buffer_size=4M join_buffer_size=4M thread_cache_size=1536 interactive_timeout=600 wait_timeout=600 tmp_table_size=32M max_heap_table_size=32M slow_query_log=1 log_timestamps=SYSTEM slow_query_log_file=/data/mysql/mysql_3306/logs/slow.log log-error=/data/mysql/mysql_3306/logs/error.log long_query_time=0.1 log_queries_not_using_indexes=1 log_throttle_queries_not_using_indexes=60 min_examined_row_limit=100 log_slow_admin_statements=1 log_slow_slave_statements=1 server-id=1433306 log-bin=/data/mysql/mysql_3306/logs/mysql-bin sync_binlog=1 binlog_cache_size=4M max_binlog_cache_size=2G max_binlog_size=1G binlog_expire_logs_seconds=2592000 master_info_repository=TABLE relay_log_info_repository=TABLE gtid_mode=on enforce_gtid_consistency=1 binlog_checksum=NONE log_slave_updates slave-rows-search-algorithms='INDEX_SCAN,HASH_SCAN' binlog_format=row binlog_row_image=FULL relay_log_recovery=1 relay-log-purge=1 key_buffer_size=32M read_buffer_size=8M read_rnd_buffer_size=4M bulk_insert_buffer_size=64M myisam_sort_buffer_size=128M myisam_max_sort_file_size=10G myisam_repair_threads=1 lock_wait_timeout=3600 explicit_defaults_for_timestamp=1 innodb_thread_concurrency=0 innodb_sync_spin_loops=100 innodb_spin_wait_delay=30 #transaction_isolation=REPEATABLE-READ transaction_isolation=READ-COMMITTED #innodb_additional_mem_pool_size=16M innodb_buffer_pool_size=2867M innodb_buffer_pool_instances=4 innodb_buffer_pool_load_at_startup=1 innodb_buffer_pool_dump_at_shutdown=1 innodb_data_file_path=ibdata1:1G:autoextend innodb_flush_log_at_trx_commit=1 innodb_log_buffer_size=32M innodb_log_file_size=2G innodb_log_files_in_group=3 innodb_max_undo_log_size=4G innodb_undo_directory=/data/mysql/mysql_3306/undolog #根据您的服务器IOPS能力适当调整 #一般配普通SSD盘的话，可以调整到10000-20000 #配置高端PCIeSSD卡的话，则可以调整的更高，比如50000-80000 innodb_io_capacity=4000 innodb_io_capacity_max=8000 innodb_flush_sync=0 innodb_flush_neighbors=0 innodb_write_io_threads=8 innodb_read_io_threads=8 innodb_purge_threads=4 innodb_page_cleaners=4 innodb_open_files=65535 innodb_max_dirty_pages_pct=50 innodb_flush_method=O_DIRECT innodb_lru_scan_depth=4000 innodb_checksum_algorithm=crc32 innodb_lock_wait_timeout=10 innodb_rollback_on_timeout=1 innodb_print_all_deadlocks=1 innodb_file_per_table=1 innodb_online_alter_log_max_size=4G innodb_stats_on_metadata=0 #somevarforMySQL8 log_error_verbosity=3 innodb_print_ddl_logs=1 binlog_expire_logs_seconds=2592000 #innodb_dedicated_server=0 innodb_status_file=1 #注意:开启innodb_status_output&innodb_status_output_locks后,可能会导致log-error文件增长较快 innodb_status_output=0 innodb_status_output_locks=0 #performance_schema performance_schema=1 performance_schema_instrument='%memory%=on' performance_schema_instrument='%lock%=on' #innodbmonitor innodb_monitor_enable="module_innodb" innodb_monitor_enable="module_server" innodb_monitor_enable="module_dml" innodb_monitor_enable="module_ddl" innodb_monitor_enable="module_trx" innodb_monitor_enable="module_os" innodb_monitor_enable="module_purge" innodb_monitor_enable="module_log" innodb_monitor_enable="module_lock" innodb_monitor_enable="module_buffer" innodb_monitor_enable="module_index" innodb_monitor_enable="module_ibuf_system" innodb_monitor_enable="module_buffer_page" innodb_monitor_enable="module_adaptive_hash" #MGR #GR配置项基中loose前缀表示若groupReplicationplugin未加载mysqlserver仍明治维新启动 transaction_write_set_extraction=XXHASH64#对每个事务获取writeset，并且用XXHASH64算法获取hash值 loose-group_replication_group_name="58f6e65e-9309-11e9-9d88-525400184a0a"#组名，此处可拿selectuuid()生成 loose-group_replication_start_on_boot=off#在mysqld启动时不自动启动组复制 loose-group_replication_local_address="10.10.1.139:33006"#本节点的IP地址和端口，注意该端口是组内成员之间通信的端口，而不是MySQL对外提供服务的端口 loose-group_replication_group_seeds="10.10.146.28:33006,10.10.1.139:33006,10.10.173.84:33006"#种子节点的IP和端口号，新成员加入到集群的时候需要联系种子节点，启动集群的节点不使用该选项 loose-group_replication_bootstrap_group=off#关闭，如果打开会造成脑裂#是否启动集群，注意，该选项任何时候只能用于一个节点，通常情况下启动集群的时候使用，启动之后需要关闭该选项 loose-group_replication_member_weight=50#权重选择 [mysqldump] quick max_allowed_packet=32M [mysqld_safe] #malloc-lib=/usr/local/mysql/lib/jmalloc.so nice=-19 open-files-limit=65535 EOF7-3、第三台配置
#第三台 if[-f/etc/my.cnf];then mv/etc/my.cnf/etc/my.cnf.`date+%Y%m%d%H%m`.bak fi #node1 cat>/data/mysql/mysql_3306/my_3306.cnf<<"EOF" [client] port=3306 socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock [mysql] prompt="\u@\h\R:\m:\s[\d]>" no-auto-rehash [mysqld] user=mysql port=3306 admin_address=127.0.0.1 basedir=/usr/local/mysql datadir=/data/mysql/mysql_3306/data socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock pid-file=mysql_3306.pid character-set-server=utf8mb4 skip_name_resolve=1 #replicate-wild-ignore-table=mysql.% #replicate-wild-ignore-table=test.% #replicate-wild-ignore-table=information_schema.% #Two-Masterconfigure #server-1 #auto-increment-offset=1 #auto-increment-increment=2 #server-2 #auto-increment-offset=2 #auto-increment-increment=2 #semisyncreplicationsettings# #plugin_dir=/usr/local/mysql/lib/mysql/plugin #plugin_load="validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" plugin_dir=/usr/local/mysql/lib/plugin#官方版本的路径 plugin_load="rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"#官方版本的路径 slave_parallel_workers=4 slave_parallel_type=LOGICAL_CLOCK slave_preserve_commit_order=1 open_files_limit=65535 back_log=1024 max_connections=1024 max_connect_errors=1000000 table_open_cache=1024 table_definition_cache=1024 table_open_cache_instances=64 thread_stack=512K external-locking=FALSE max_allowed_packet=32M sort_buffer_size=4M join_buffer_size=4M thread_cache_size=1536 interactive_timeout=600 wait_timeout=600 tmp_table_size=32M max_heap_table_size=32M slow_query_log=1 log_timestamps=SYSTEM slow_query_log_file=/data/mysql/mysql_3306/logs/slow.log log-error=/data/mysql/mysql_3306/logs/error.log long_query_time=0.1 log_queries_not_using_indexes=1 log_throttle_queries_not_using_indexes=60 min_examined_row_limit=100 log_slow_admin_statements=1 log_slow_slave_statements=1 server-id=1443306 log-bin=/data/mysql/mysql_3306/logs/mysql-bin sync_binlog=1 binlog_cache_size=4M max_binlog_cache_size=2G max_binlog_size=1G binlog_expire_logs_seconds=2592000 master_info_repository=TABLE relay_log_info_repository=TABLE gtid_mode=on enforce_gtid_consistency=1 binlog_checksum=NONE log_slave_updates slave-rows-search-algorithms='INDEX_SCAN,HASH_SCAN' binlog_format=row binlog_row_image=FULL relay_log_recovery=1 relay-log-purge=1 key_buffer_size=32M read_buffer_size=8M read_rnd_buffer_size=4M bulk_insert_buffer_size=64M myisam_sort_buffer_size=128M myisam_max_sort_file_size=10G myisam_repair_threads=1 lock_wait_timeout=3600 explicit_defaults_for_timestamp=1 innodb_thread_concurrency=0 innodb_sync_spin_loops=100 innodb_spin_wait_delay=30 #transaction_isolation=REPEATABLE-READ transaction_isolation=READ-COMMITTED #innodb_additional_mem_pool_size=16M innodb_buffer_pool_size=2867M innodb_buffer_pool_instances=4 innodb_buffer_pool_load_at_startup=1 innodb_buffer_pool_dump_at_shutdown=1 innodb_data_file_path=ibdata1:1G:autoextend innodb_flush_log_at_trx_commit=1 innodb_log_buffer_size=32M innodb_log_file_size=2G innodb_log_files_in_group=3 innodb_max_undo_log_size=4G innodb_undo_directory=/data/mysql/mysql_3306/undolog #根据您的服务器IOPS能力适当调整 #一般配普通SSD盘的话，可以调整到10000-20000 #配置高端PCIeSSD卡的话，则可以调整的更高，比如50000-80000 innodb_io_capacity=4000 innodb_io_capacity_max=8000 innodb_flush_sync=0 innodb_flush_neighbors=0 innodb_write_io_threads=8 innodb_read_io_threads=8 innodb_purge_threads=4 innodb_page_cleaners=4 innodb_open_files=65535 innodb_max_dirty_pages_pct=50 innodb_flush_method=O_DIRECT innodb_lru_scan_depth=4000 innodb_checksum_algorithm=crc32 innodb_lock_wait_timeout=10 innodb_rollback_on_timeout=1 innodb_print_all_deadlocks=1 innodb_file_per_table=1 innodb_online_alter_log_max_size=4G innodb_stats_on_metadata=0 #somevarforMySQL8 log_error_verbosity=3 innodb_print_ddl_logs=1 binlog_expire_logs_seconds=2592000 #innodb_dedicated_server=0 innodb_status_file=1 #注意:开启innodb_status_output&innodb_status_output_locks后,可能会导致log-error文件增长较快 innodb_status_output=0 innodb_status_output_locks=0 #performance_schema performance_schema=1 performance_schema_instrument='%memory%=on' performance_schema_instrument='%lock%=on' #innodbmonitor innodb_monitor_enable="module_innodb" innodb_monitor_enable="module_server" innodb_monitor_enable="module_dml" innodb_monitor_enable="module_ddl" innodb_monitor_enable="module_trx" innodb_monitor_enable="module_os" innodb_monitor_enable="module_purge" innodb_monitor_enable="module_log" innodb_monitor_enable="module_lock" innodb_monitor_enable="module_buffer" innodb_monitor_enable="module_index" innodb_monitor_enable="module_ibuf_system" innodb_monitor_enable="module_buffer_page" innodb_monitor_enable="module_adaptive_hash" #MGR #GR配置项基中loose前缀表示若groupReplicationplugin未加载mysqlserver仍明治维新启动 transaction_write_set_extraction=XXHASH64#对每个事务获取writeset，并且用XXHASH64算法获取hash值 loose-group_replication_group_name="58f6e65e-9309-11e9-9d88-525400184a0a"#组名，此处可拿selectuuid()生成 loose-group_replication_start_on_boot=off#在mysqld启动时不自动启动组复制 loose-group_replication_local_address="10.10.173.84:33006"#本节点的IP地址和端口，注意该端口是组内成员之间通信的端口，而不是MySQL对外提供服务的端口 loose-group_replication_group_seeds="10.10.146.28:33006,10.10.1.139:33006,10.10.173.84:33006"#种子节点的IP和端口号，新成员加入到集群的时候需要联系种子节点，启动集群的节点不使用该选项 loose-group_replication_bootstrap_group=off#关闭，如果打开会造成脑裂#是否启动集群，注意，该选项任何时候只能用于一个节点，通常情况下启动集群的时候使用，启动之后需要关闭该选项 loose-group_replication_member_weight=50#权重选择 [mysqldump] quick max_allowed_packet=32M [mysqld_safe] #malloc-lib=/usr/local/mysql/lib/jmalloc.so nice=-19 open-files-limit=65535 EOF八、修改权限、初始化并启动
chown-Rmysql.mysql/data/mysql/mysql_3306 chown-Rmysql.mysql/usr/local/mysql/ #初始化 #/usr/local/mysql/bin/mysqld--user=mysql--basedir=/usr/local/mysql--datadir=/data/mysql--initialize-insecure #官方推荐使用--initialize，会在错误日志中生成难以输入的临时密码，我这里使用的免密码的方式。 /usr/local/mysql/bin/mysqld--defaults-file=/data/mysql/mysql_3306/my_3306.cnf--initialize-insecure--user=mysql& #启动数据库 /usr/local/mysql/bin/mysqld_safe--defaults-file=/data/mysql/mysql_3306/my_3306.cnf&九、查看日志
#9、查看日志 #tail-f/data/mysql/mysql_3306/logs/error.log十、初次登陆
#10、初次登陆 /usr/local/mysql/bin/mysql-S/data/mysql/mysql_3306/tmp/mysql_3306.sock十一、修改密码
#修改密码方法 setsql_log_bin=0; ALTERUSER'root'@'localhost'IDENTIFIEDWITHmysql_native_passwordBY'GJjumB6g4FcwdF3R6AZc'PASSWORDEXPIRENEVER; createuser'root'@'127.0.0.1'identifiedWITHmysql_native_passwordby'GJjumB6g4FcwdF3R6AZc'PASSWORDEXPIRENEVER; grantallprivilegeson*.*to'root'@'127.0.0.1'withgrantoption; createuser'admin_m'@'127.0.0.1'identifiedWITHmysql_native_passwordby'fcfmTbRw1tz2x5L5GvjJ'PASSWORDEXPIRENEVER; grantallprivilegeson*.*to'admin_m'@'127.0.0.1'withgrantoption; createuser'admin_m'@'%'identifiedWITHmysql_native_passwordby'fcfmTbRw1tz2x5L5GvjJ'PASSWORDEXPIRENEVER; grantallprivilegeson*.*to'admin_m'@'%'withgrantoption; createuser'test_w'@'%'identifiedwithmysql_native_passwordby'EeCrfUDO6wRzn72BBQ52'PASSWORDEXPIRENEVER; grantinsert,delete,update,selectondb144.*to'test_w'@'%'; createuser'test_r'@'%'identifiedwithmysql_native_passwordby'EeCrfUDO6wRzn72BBQ52'PASSWORDEXPIRENEVER; grantinsert,delete,update,selectondb144.*to'test_r'@'%'; createuser'repl'@'%'IDENTIFIEDwithmysql_native_passwordby'replpfhOTnWffQdQL3F3'; GRANTREPLICATIONSLAVEON*.*TO'repl'@'%'; setsql_log_bin=1;十二、快捷方式设置
快捷方式
ln-s/usr/local/mysql/lib/libmysqlclient.so/usr/lib/ ln-s/usr/local/mysql/lib/libmysqlclient.so.21/usr/lib/libmysqlclient.so.21 ln-s/usr/local/mysql/lib/libmysqlclient.so/usr/lib64/ ln-s/usr/local/mysql/lib/libmysqlclient.so.21/usr/lib64/libmysqlclient.so.21 ln-s/data/mysql/mysql_3306/tmp/mysql_3306.sock/tmp/mysql.sock ln-s/usr/local/mysql/bin/*/usr/bin/ cat>>~/.bashrc<<"EOF" ########## aliasmysql.3306.start="/usr/local/mysql/bin/mysqld_safe--defaults-file=/data/mysql/mysql_3306/my_3306.cnf&" aliasmysql.3306.stop="/usr/local/mysql/bin/mysqladmin-h127.0.0.1-P3306-uroot-p'GJjumB6g4FcwdF3R6AZc'shutdown&" aliasmysql.3306.login="/usr/local/mysql/bin/mysql-h127.0.0.1-P3306-uroot-p'GJjumB6g4FcwdF3R6AZc'" ########## EOF source/root/.bash_profile cat>>/etc/ld.so.conf<<"EOF" /usr/local/mysql/lib EOF ldconfig mysql.3306.login十三、MGR配置
13-1、第一台配置
#MGR第一台配置： #第一步：创建用于复制的用户 setsql_log_bin=0; createuser'repuser'@'%'identifiedby'JhXpMK44ju8Vp5bxvO2N'; grantreplicationslave,replicationclienton*.*to'repuser'@'%'; createuser'repuser'@'127.0.0.1'identifiedby'JhXpMK44ju8Vp5bxvO2N'; grantreplicationslave,replicationclienton*.*to'repuser'@'127.0.0.1'; createuser'repuser'@'localhost'identifiedby'JhXpMK44ju8Vp5bxvO2N'; grantreplicationslave,replicationclienton*.*to'repuser'@'localhost'; setsql_log_bin=1; #第二步：配置复制所使用的用户 changemastertomaster_user='repuser',master_password='JhXpMK44ju8Vp5bxvO2N'forchannel'group_replication_recovery'; #第三步：安装mysqlgroupreplication这个插件 #备注：如果在my.cnf里写写入plugin_load="group_replication=group_replication.so"这步就可以不用操作 installplugingroup_replicationsoname'group_replication.so'; #通过showplugins;查看是否安装成功 showplugins; #第四步：建个群(官方点的说法就是初始化一个复制组 setglobalgroup_replication_bootstrap_group=on; startgroup_replication; setglobalgroup_replication_bootstrap_group=off; select*fromperformance_schema.replication_group_members;
13-2、第二台、第三台配置
########################################################################## #MGR配置其他从节点 #在所有从主机上的mysql中执行 #第一步：创建用于复制的用户 setsql_log_bin=0; createuser'repuser'@'%'identifiedby'JhXpMK44ju8Vp5bxvO2N'; grantreplicationslave,replicationclienton*.*to'repuser'@'%'; createuser'repuser'@'127.0.0.1'identifiedby'JhXpMK44ju8Vp5bxvO2N'; grantreplicationslave,replicationclienton*.*to'repuser'@'127.0.0.1'; createuser'repuser'@'localhost'identifiedby'JhXpMK44ju8Vp5bxvO2N'; grantreplicationslave,replicationclienton*.*to'repuser'@'localhost'; setsql_log_bin=1; #第二步：配置复制所使用的用户 changemastertomaster_user='repuser',master_password='JhXpMK44ju8Vp5bxvO2N'forchannel'group_replication_recovery'; #第三步：安装mysqlgroupreplication这个插件 #备注：如果在my.cnf里写写入plugin_load="group_replication=group_replication.so"这步就可以不用操作 installplugingroup_replicationsoname'group_replication.so'; #通过showplugins;查看是否安装成功 showplugins; #第四步：加入前面创建好的复制组 startgroup_replication; select*fromperformance_schema.replication_group_members; ######################################################################################### #检查状态 mysql>select*fromperformance_schema.replication_group_members; +---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+ |CHANNEL_NAME|MEMBER_ID|MEMBER_HOST|MEMBER_PORT|MEMBER_STATE|MEMBER_ROLE|MEMBER_VERSION| +---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+ |group_replication_applier|d955da6d-0048-11ea-b7b4-525400f4342d|bj-db-m1|3306|ONLINE|PRIMARY|8.0.18| |group_replication_applier|e050c34f-0048-11ea-917d-52540021fab9|bj-db-m3|3306|ONLINE|SECONDARY|8.0.18| |group_replication_applier|e6c56347-0048-11ea-9e8b-5254007c241f|bj-db-m2|3306|ONLINE|SECONDARY|8.0.18| +---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+ 3rowsinset(0.00sec)十四、单主切换到多主
###################################################################### #单主切换到多主 #MGR切换模式需要重新启动组复制，因此需要在所有节点上先关闭组复制， #设置group_replication_single_primary_mode=OFF等参数，再启动组复制。 1)停止组复制(在所有MGR节点上执行)： stopgroup_replication; setglobalgroup_replication_single_primary_mode=OFF; setglobalgroup_replication_enforce_update_everywhere_checks=ON; 2)随便选择某个MGR节点执行(比如这里选择在MGR-node1节点): setglobalgroup_replication_recovery_get_public_key=1; SETGLOBALgroup_replication_bootstrap_group=ON; STARTGROUP_REPLICATION; SETGLOBALgroup_replication_bootstrap_group=OFF; 3)然后在其他的MGR节点执行(这里指MGR-node2和MGR-node3节点上执行): setglobalgroup_replication_recovery_get_public_key=1; STARTGROUP_REPLICATION; 4)查看MGR组信息(在任意一个MGR节点上都可以查看) SELECT*FROMperformance_schema.replication_group_members; #可以看到所有MGR节点状态都是online，角色都是PRIMARY，MGR多主模式搭建成功。##########################################################################
十五、多主切换回单主
########################################################################## #多主切回单主模式 1)停止组复制(在所有MGR节点上执行)： stopgroup_replication; setglobalgroup_replication_enforce_update_everywhere_checks=OFF; setglobalgroup_replication_single_primary_mode=ON; 2)选择一个节点作为主节点,在主节点上执行(这里选择MGR-node1节点作为主节点) SETGLOBALgroup_replication_bootstrap_group=ON; STARTGROUP_REPLICATION; SETGLOBALgroup_replication_bootstrap_group=OFF; 3)在其他剩余的节点,也就是从库节点上执行(这里从库节点指的就是MGR-node2和MGR-node3): STARTGROUP_REPLICATION; 4)查看MGR组信息(在任意一个MGR节点上都可以查看) SELECT*FROMperformance_schema.replication_group_members; ##########################################################################十六、故障注意事项
#故障注意点： #单主模式，恢复MGR-node1节点,恢复后,需要手动激活下该节点的组复制功能 #如果节点发生故障,在恢复后需要重新加入到MGR集群里,正确的做法是: STOPGROUP_REPLICATION; STARTGROUP_REPLICATION; #如果某个节点挂了,则其他的节点继续进行同步. #当故障节点恢复后,只需要手动激活下该节点的组复制功能("STARTGROUP_REPLICATION;"), #即可正常加入到MGR组复制集群内并自动同步其他节点数据. #如果是i/o复制出现异常 #确定数据无误后 #查找主库的gtid情况 mysql>showglobalvariableslike'%gtid%'; +----------------------------------------------+-------------------------------------------------------+ |Variable_name|Value| +----------------------------------------------+-------------------------------------------------------+ |binlog_gtid_simple_recovery|ON| |enforce_gtid_consistency|ON| |group_replication_gtid_assignment_block_size|1000000| |gtid_executed|58f6e65e-9309-11e9-9d88-525400184a0a:1-946050:1000003| |gtid_executed_compression_period|1000| |gtid_mode|ON| |gtid_owned|| |gtid_purged|| |session_track_gtids|OFF| +----------------------------------------------+-------------------------------------------------------+ rowsinset(0.00sec) #在有故障的从库中操作 stopGROUP_REPLICATION; resetmaster; setglobalgtid_purged='58f6e65e-9309-11e9-9d88-525400184a0a:1-946055:1000003'; STARTGROUP_REPLICATION; #添加白名单网段 stopgroup_replication; setglobalgroup_replication_ip_whitelist="127.0.0.1/32,172.16.60.0/24,172.16.50.0/24,172.16.51.0/24"; startgroup_replication; showvariableslike"group_replication_ip_whitelist"; #一定要注意:配置白名单前面一定要先关闭GroupReplication,及先要执行"stopgroup_replication;"总结
以上所述是小编给大家介绍的mysql8.0.18mgr搭建及其切换功能，希望对大家有所帮助！
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