一、系统安装包
yum -y install make gcc-c++ cmake bison-devel ncurses-devel readline-devel libaio-devel perl libaio wget lrzsz vim libnuma* bzip2 xz
二、关闭防火墙和selinux
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
setenforce 0
/etc/init.d/iptables stop
echo "/etc/init.d/iptables stop">>/etc/rc.local
三、修改系统限制参数
cat >> /etc/security/limits.conf << EOF
#
###custom
#
* soft nofile 20480
* hard nofile 65535
* soft nproc 20480
* hard nproc 65535
EOF
四、配置每台hosts主机解析
cat >> /etc/hosts <<"EOF"
192.168.0.71 mysql-01
192.168.0.72 mysql-02
192.168.0.73 mysql-03
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 = 1024 65535
#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
wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.19-linux-glibc2.12-x86_64.tar.xz
解压安装包
tar -xJf mysql-8.0.19-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-8.0.19-linux-glibc2.12-x86_64 mysql
创建用户
groupadd mysql
useradd -g mysql mysql -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-Master configure
#server-1
#auto-increment-offset = 1
#auto-increment-increment = 2
#server-2
#auto-increment-offset = 2
#auto-increment-increment = 2
#default_authentication_plugin=mysql_native_password
# semi sync replication settings #
#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 = 13306
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PCIe SSD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
# some var for MySQL 8
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'
#innodb monitor
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group Replication plugin未加载 mysql server仍明治维新启动
transaction_write_set_extraction = XXHASH64 #对每个事务获取write set，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select uuid()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 = "192.168.0.71:33006" #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 = "192.168.0.71:33006,192.168.0.72:33006,192.168.0.73:33006" #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
# node2
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-Master configure
#server-1
#auto-increment-offset = 1
#auto-increment-increment = 2
#server-2
#auto-increment-offset = 2
#auto-increment-increment = 2
# semi sync replication settings #
#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 = 23306
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PCIe SSD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
# some var for MySQL 8
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'
#innodb monitor
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group Replication plugin未加载 mysql server仍明治维新启动
transaction_write_set_extraction = XXHASH64 #对每个事务获取write set，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select uuid()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 = "192.168.0.72:33006" #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 = "192.168.0.71:33006,192.168.0.72:33006,192.168.0.73:33006" #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
7-3、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
# node3
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-Master configure
#server-1
#auto-increment-offset = 1
#auto-increment-increment = 2
#server-2
#auto-increment-offset = 2
#auto-increment-increment = 2
# semi sync replication settings #
#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 = 33306
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PCIe SSD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
# some var for MySQL 8
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'
#innodb monitor
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group Replication plugin未加载 mysql server仍明治维新启动
transaction_write_set_extraction = XXHASH64 #对每个事务获取write set，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select uuid()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 = "192.168.0.73:33006" #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 = "192.168.0.71:33006,192.168.0.72:33006,192.168.0.73:33006" #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 -R mysql.mysql /data/mysql/mysql_3306
chown -R mysql.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
set sql_log_bin = 0;
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'mysqlrootpasswd' PASSWORD EXPIRE NEVER ;
create user 'root'@'127.0.0.1' identified WITH mysql_native_password by 'mysqlrootpasswd' PASSWORD EXPIRE NEVER ;
grant all privileges on *.* to 'root'@'127.0.0.1' with grant option;
create user 'admin_m'@'127.0.0.1' identified WITH mysql_native_password by 'mysqladmin_mpasswd' PASSWORD EXPIRE NEVER ;
grant all privileges on *.* to 'admin_m'@'127.0.0.1' with grant option;
create user 'admin_m'@'%' identified WITH mysql_native_password by 'mysqladmin_mpasswd' PASSWORD EXPIRE NEVER ;
grant all privileges on *.* to 'admin_m'@'%' with grant option;
create user 'test_w'@'%' identified with mysql_native_password by 'mysqladmin_wpasswd' PASSWORD EXPIRE NEVER ;
grant insert,delete,update,select on *.* to 'test_w'@'%' ;
create user 'test_r'@'%' identified with mysql_native_password by 'mysqladmin_rpasswd' PASSWORD EXPIRE NEVER ;
grant insert,delete,update,select on *.* to 'test_r'@'%' ;
create user 'repl'@'%' IDENTIFIED with mysql_native_password by 'mysqlreplpasswd' ;
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%' ;
set sql_log_bin = 1;
附: 查看当前创建的所有用户信息SQL
select user,host,plugin from mysql.user;
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/
做快捷操作:
cat >>~/.bashrc <<"EOF"
##########
alias mysql.3306.start="/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_3306/my_3306.cnf &"
alias mysql.3306.stop="/usr/local/mysql/bin/mysqladmin -h127.0.0.1 -P 3306 -uroot -p'mysqlrootpasswd' shutdown &"
alias mysql.3306.login="/usr/local/mysql/bin/mysql -h127.0.0.1 -P 3306 -uroot -p'mysqlrootpasswd'"
##########
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
set sql_log_bin=0;
create user 'repuser'@'%' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'%';
create user 'repuser'@'127.0.0.1' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'127.0.0.1';
create user 'repuser'@'localhost' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'localhost';
set sql_log_bin=1;
# 第二步：配置复制所使用的用户
change master to master_user='repuser',master_password='mysqlrepuserpasswd' for channel 'group_replication_recovery';
# 第三步：安装mysql group replication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
install plugin group_replication soname 'group_replication.so';
# 通过show plugins;查看是否安装成功
show plugins;
# 第四步：建个群(官方点的说法就是初始化一个复制组
set global group_replication_bootstrap_group=on;
start group_replication;
set global group_replication_bootstrap_group=off;
select * from performance_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
set sql_log_bin=0;
create user 'repuser'@'%' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'%';
create user 'repuser'@'127.0.0.1' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'127.0.0.1';
create user 'repuser'@'localhost' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'localhost';
set sql_log_bin=1;
# 第二步：配置复制所使用的用户
change master to master_user='repuser',master_password='mysqlrepuserpasswd' for channel 'group_replication_recovery';
# 第三步：安装mysql group replication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
install plugin group_replication soname 'group_replication.so';
# 通过show plugins;查看是否安装成功
show plugins;
# 第四步：加入前面创建好的复制组
start group_replication;
select * from performance_schema.replication_group_members;
十四、单主切换到多主
# 单主切换到多主,视业务情况决定是否要切换
# 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)：
stop group_replication;
set global group_replication_single_primary_mode=OFF;
set global group_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):
set global group_replication_recovery_get_public_key=1;
SET GLOBAL group_replication_bootstrap_group=ON;
START GROUP_REPLICATION;
SET GLOBAL group_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):
set global group_replication_recovery_get_public_key=1;
START GROUP_REPLICATION;
4) 查看MGR组信息 (在任意一个MGR节点上都可以查看)
SELECT * FROM performance_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)：
stop group_replication;
set global group_replication_enforce_update_everywhere_checks=OFF;
set global group_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)
SET GLOBAL group_replication_bootstrap_group=ON;
START GROUP_REPLICATION;
SET GLOBAL group_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):
START GROUP_REPLICATION;
4) 查看MGR组信息 (在任意一个MGR节点上都可以查看)
SELECT * FROM performance_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:
STOP GROUP_REPLICATION;
START GROUP_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("START GROUP_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> show global variables like '%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 |
+----------------------------------------------+-------------------------------------------------------+
rows in set (0.00 sec)
# 在有故障的从库中操作
stop GROUP_REPLICATION;
reset master;
set global gtid_purged='58f6e65e-9309-11e9-9d88-525400184a0a:1-946055:1000003';
START GROUP_REPLICATION;
# 添加白名单网段
stop group_replication;
set global group_replication_ip_whitelist="127.0.0.1/32,172.16.60.0/24,172.16.50.0/24,172.16.51.0/24";
start group_replication;
show variables like "group_replication_ip_whitelist";
# 一定要注意: 配置白名单前面一定要先关闭 Group Replication, 及先要执行"stop group_replication;"
十七、集群重启及故障恢复
重启
注意需要先确认是否所有节点数据最新,如果有不一样的,需要将最新数据的节点作为主节点启动
先在master节点:
STOP GROUP_REPLICATION;
SET GLOBAL group_replication_bootstrap_group=ON;
change master to master_user='repuser',master_password='mysqlrepuserpasswd' for channel 'group_replication_recovery';
START GROUP_REPLICATION;
SET GLOBAL group_replication_bootstrap_group=OFF;
mysql> select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 443da833-73b1-11ea-ad9b-000c29559945 | master01 | 3306 | ONLINE | PRIMARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
1 row in set (0.00 sec)
其他节点:
STOP GROUP_REPLICATION;
change master to master_user='repuser',master_password='mysqlrepuserpasswd' for channel 'group_replication_recovery';
START GROUP_REPLICATION;
单节点恢复
STOP GROUP_REPLICATION;
change master to master_user='repuser',master_password='mysqlrepuserpasswd' for channel 'group_replication_recovery';
START GROUP_REPLICATION;
恢复节点一直处于recovering
有可能是由于mysql8的新的密码加密方式导致的
解决方法:在MGR主节点
SET SQL_LOG_BIN=0;
alter USER 'repuser'@'%' IDENTIFIED WITH sha256_password BY 'mysqlrepuserpasswd';
alter USER 'repuser'@'127.0.0.1' IDENTIFIED WITH sha256_password BY 'mysqlrepuserpasswd';
alter USER 'repuser'@'localhost' IDENTIFIED WITH sha256_password BY 'mysqlrepuserpasswd';
SET SQL_LOG_BIN=1;
可以考虑在生成密码的时候
set sql_log_bin=0;
create user 'repuser'@'%' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'%';
create user 'repuser'@'127.0.0.1' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'127.0.0.1';
create user 'repuser'@'localhost' identified WITH sha256_password by 'mysqlrepuserpasswd';
grant replication slave,replication client on *.* to 'repuser'@'localhost';
set sql_log_bin=1;
十八. 其他
慢查询相关设置:
mysql> show variables like 'long_query_time';
+-----------------+----------+
| Variable_name | Value |
+-----------------+----------+
| long_query_time | 1.000000 |
+-----------------+----------+
1 row in set (0.01 sec)
mysql> show variables like 'slow_query%';
+---------------------+-------------------------------------------+
| Variable_name | Value |
+---------------------+-------------------------------------------+
| slow_query_log | ON |
| slow_query_log_file | /home/data/mysql/mysql_3306/logs/slow.log |
+---------------------+-------------------------------------------+
2 rows in set (0.01 sec)
mysql> SELECT @@global.log_throttle_queries_not_using_indexes;
+-------------------------------------------------+
| @@global.log_throttle_queries_not_using_indexes |
+-------------------------------------------------+
| 60 |
+-------------------------------------------------+
1 row in set (0.00 sec)
mysql> SELECT @@global.min_examined_row_limit;
+---------------------------------+
| @@global.min_examined_row_limit |
+---------------------------------+
| 100 |
+---------------------------------+
1 row in set (0.00 sec)
mysql> SET global min_examined_row_limit=1000;
Query OK, 0 rows affected (0.00 sec) # 行数超过1000条的才会被记录
mysql> SELECT @@global.min_examined_row_limit;
+---------------------------------+
| @@global.min_examined_row_limit |
+---------------------------------+
| 1000 |
+---------------------------------+
1 row in set (0.00 sec)
mysql> SELECT @@global.log_queries_not_using_indexes; # 查看是否开启索引检查
+----------------------------------------+
| @@global.log_queries_not_using_indexes |
+----------------------------------------+
| 1 |
+----------------------------------------+
1 row in set (0.00 sec)
如果要关闭是否启用索引的检查:
SET global log_queries_not_using_indexes=0; # 应该是这样写的...
set global log_queries_not_using_indexes=off; # 这行是网上查的写法....
clone插件的使用:
安装:(需要mysql8.0.17版本以上)
mysql> install plugin clone SONAME 'mysql_clone.so';
Query OK, 0 rows affected (0.02 sec)
mysql> show plugins;
+---------------------------------+----------+--------------------+----------------------+---------+
| Name | Status | Type | Library | License |
+---------------------------------+----------+--------------------+----------------------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| mysql_native_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| sha256_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| caching_sha2_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| sha2_cache_cleaner | ACTIVE | AUDIT | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE_LRU | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_POOL_STATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TEMP_TABLE_INFO | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_METRICS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_BEING_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_CONFIG | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_CACHE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_TABLE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TABLES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TABLESTATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_COLUMNS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_VIRTUAL | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CACHED_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SESSION_TEMP_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| PERFORMANCE_SCHEMA | ACTIVE | STORAGE ENGINE | NULL | GPL |
| TempTable | ACTIVE | STORAGE ENGINE | NULL | GPL |
| ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| FEDERATED | DISABLED | STORAGE ENGINE | NULL | GPL |
| ngram | ACTIVE | FTPARSER | NULL | GPL |
| mysqlx | ACTIVE | DAEMON | NULL | GPL |
| mysqlx_cache_cleaner | ACTIVE | AUDIT | NULL | GPL |
| rpl_semi_sync_master | ACTIVE | REPLICATION | semisync_master.so | GPL |
| rpl_semi_sync_slave | ACTIVE | REPLICATION | semisync_slave.so | GPL |
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | GPL |
| clone | ACTIVE | CLONE | mysql_clone.so | GPL |
+---------------------------------+----------+--------------------+----------------------+---------+
48 rows in set (0.00 sec)
本地克隆:
mysql> CLONE LOCAL DATA DIRECTORY = '/home/mysql/test';
Query OK, 0 rows affected (36.53 sec)
远程克隆:(未验证)
set global clone_valid_donor_list='192.168.64.154:5432'
clone instance from gao@192.168.64.154:5432 identified by '213456' data directory = '/data/backup/clone/mysql8';
远程克隆可用于创建mysql的集群同步节点,远程克隆的具体使用可以参照:
