本文记录搭建mysql innodb cluster的过程和基本的测试。
1、环境描述
主机名
主机IP
部署
tidb60
192.168.68.60
MySQL8.0.20
tidb61
192.168.68.61
MySQL8.0.20
tidb62
192.168.68.62
MySQL8.0.20
tidb63
192.168.68.63
MySQL-shell,MySQL-route，mysql-client
2、下载安装包
https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz
https://cdn.mysql.com//Downloads/MySQL-Router/mysql-router-8.0.20-linux-glibc2.12-x86_64.tar.xz
https://cdn.mysql.com//Downloads/MySQL-Shell/mysql-shell-8.0.20-linux-glibc2.12-x86-64bit.tar.gz
2、环境部署
2.1 MySQL8.0.20 实例部署，以tidb60主机上为例。
mkdir -p /home/mysql_cluster/my3366/{socket,data,logs,dump_dir}
cd /home/mysql_cluster
chown -R mysql:mysql my3366
/usr/local/mysql8020/bin/mysqld --defaults-file=/home/mysql_cluster/my3366/my3366.cnf --initialize
nohup /usr/local/mysql8020/bin/mysqld_safe --defaults-file=/home/mysql_cluster/my3366/my3366.cnf --user=mysql &
/usr/local/mysql8020/bin/mysql -S /home/mysql_cluster/my3366/socket/mysql3366.sock -uroot -p
create user [email protected]'%' identified WITH mysql_native_password by 'dba';
grant all on *.* to [email protected]'%' with grant option;
flush privileges;
参数文件/home/mysql_cluster/my3366/my3366.cnf
[client]
port =
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
[mysql]
prompt="\\[email protected]\\h \R:\m:\s [\\d]>"
no-auto-rehash
port = 3366
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
default_character_set = utf8mb4
[mysqladmin]
port = 3366
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
[mysqldump]
port = 3366
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
[xtrabackup]
port = 3366
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
[mysqlbackup]
port = 3366
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
safe_slave_backup_timeout = 0
[mysqld]
# basic settings #
user = mysql
port = 3366
default_storage_engine = InnoDB
server_id = 168603366
sql_mode = STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
socket = /home/mysql_cluster/my3366/socket/mysql3366.sock
pid_file = /home/mysql_cluster/my3366/socket/mysql3366.pid
basedir = /usr/local/mysql8020
datadir = /home/mysql_cluster/my3366/data
character_set_server = utf8mb4
default_time_zone = +08:00
back_log = 1024
thread_stack = 512K
external_locking = FALSE
open_files_limit = 65535
max_allowed_packet = 128M
lower_case_table_names = 1
explicit_defaults_for_timestamp = 1
read_only = 0
super_read_only = 0
# connection #
lock_wait_timeout = 3600
skip_name_resolve = 1
max_connect_errors = 1000000
max_connections = 5000
# table cache performance settings#
table_open_cache = 4096
table_open_cache_instances = 64
table_definition_cache = 4096
# CACHES AND LIMITS #
tmp_table_size = 32M
max_heap_table_size = 32M
bulk_insert_buffer_size = 64M
# session memory settings #
sort_buffer_size = 4M
join_buffer_size = 4M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
thread_cache_size = 3000
# log settings #
log_error_verbosity = 3
min_examined_row_limit = 100
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_error = /home/mysql_cluster/my3366/logs/mysql-error.log
log_timestamps = SYSTEM
log_queries_not_using_indexes = 1
slow_query_log = 1
slow_query_log_file = /home/mysql_cluster/my3366/logs/mysql-slow.log
long_query_time = 0.5
# innodb settings #
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path = ibdata1:1G:autoextend
innodb_log_buffer_size = 32M
innodb_thread_concurrency = 0
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30
##机械盘设置为500,SSD盘设置为10000-20000##
innodb_io_capacity = 500
##机械盘设置为2000,SSD盘设置为10000-20000##
innodb_io_capacity_max = 1000
##机械盘设置为1,SSD盘设置为0##
innodb_flush_neighbors = 1
innodb_write_io_threads = 16
innodb_read_io_threads = 16
innodb_purge_threads = 4
innodb_page_cleaners = 16
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 50
innodb_lru_scan_depth = 4096
innodb_lock_wait_timeout = 10
innodb_checksum_algorithm = crc32
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_online_alter_log_max_size = 4G
innodb_stats_on_metadata = 0
innodb_flush_method = O_DIRECT
innodb_log_files_in_group = 3
innodb_log_file_size = 1G
innodb_flush_log_at_trx_commit = 1
innodb_file_per_table = 1
innodb_buffer_pool_size = 4G
innodb_buffer_pool_instances = 4
# undo settings #
innodb_undo_directory = /home/mysql_cluster/my3366/data
innodb_undo_tablespaces = 95
innodb_undo_log_truncate = 1
innodb_purge_rseg_truncate_frequency = 128
innodb_max_undo_log_size = 4G
innodb_status_file = 1
innodb_status_output = 0
innodb_status_output_locks = 0
# performance_schema #
performance_schema = 1
performance_schema_instrument = '%=on'
# innodb monitor #
innodb_monitor_enable="module_innodb,module_server,module_dml,module_ddl,module_trx,module_os,module_purge,module_log,module_lock,module_buffer,module_index,module_ibuf_system,module_buffer_page,module_adaptive_hash"
# safe #
secure_file_priv = /home/mysql_cluster/my3366/dump_dir
default_password_lifetime = 0
# replication settings #
skip_slave_start = 1
relay_log = /home/mysql_cluster/my3366/logs/relay-bin
slave_pending_jobs_size_max = 128M
log_slave_updates = 1
log_bin = /home/mysql_cluster/my3366/logs/mysql-bin
expire_logs_days = 7
sync_binlog = 1
gtid_mode = ON
enforce_gtid_consistency = 1
binlog_cache_size = 4M
max_binlog_size = 512M
max_binlog_cache_size = 2G
slave_preserve_commit_order= 1
binlog_format = row
relay_log_purge = 1
slave_parallel_type = LOGICAL_CLOCK
slave_parallel_workers = 16
master_info_repository = TABLE
relay_log_info_repository = TABLE
relay_log_recovery = ON
binlog_gtid_simple_recovery = 1
# group replication & innodb cluster #
disabled_storage_engines = "MyISAM,BLACKHOLE,FEDERATED,ARCHIVE,MEMORY"
master_info_repository = table
binlog_checksum = NONE
relay_log_info_repository = table
gtid_mode = ON
enforce_gtid_consistency = ON
binlog_checksum = NONE
log_slave_updates = ON
binlog_format = ROW
transaction_write_set_extraction = XXHASH64
slave_parallel_workers = 4
slave_preserve_commit_order = 1
slave_parallel_type = LOGICAL_CLOCK
binlog_transaction_dependency_tracking = WRITESET_SESSION
# clone #
2.2 配置检查
在tidb63主机上部署mysqlshell，下载后解压，配置环境变量即可使用，部署路径跟进实际环境即可。
检查节点1：tidb60:3366实例
[[email protected] bin]# pwd
/home/jm/data/mysql-shell-8.0.20/bin
[[email protected] bin]# ./mysqlsh [email protected]:3366Please provide the password for '[email protected]:3366': ***
MySQL Shell 8.0.20
Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its affiliates.
Other names may be trademarks of their respective owners.
Type '\help' or '\?' for help; '\quit' to exit.
Creating a session to '[email protected]:3366'
Fetching schema names for autocompletion... Press ^C to stop.
Your MySQL connection id is 36698
Server version: 8.0.20 MySQL Community Server - GPL
No default schema selected; type \use to set one.
MySQL tidb60:3366 ssl JS > dba.checkInstanceConfiguration("[email protected]:3366");Please provide the password for '[email protected]:3366': ***
Validating MySQL instance at tidb60.com:3366 for use in an InnoDB cluster...
This instance reports its own address as tidb60.com:3366
Clients and other cluster members will communicate with it through this address by default. If this is not correct, the report_host MySQL system variable should be changed.
Checking whether existing tables comply with Group Replication requirements...
No incompatible tables detected
Checking instance configuration...
Instance configuration is compatible with InnoDB cluster
The instance 'tidb60.com:3366' is valid to be used in an InnoDB cluster.
{
"status": "ok"
}
MySQL tidb60:3366 ssl JS >
检查节点2：tidb61:3366实例
MySQL tidb60:3366 ssl JS > dba.checkInstanceConfiguration("[email protected]:3366");
Please provide the password for '[email protected]:3366': ***
Validating MySQL instance at tidb61.com:3366 for use in an InnoDB cluster...
This instance reports its own address as tidb61.com:3366
Clients and other cluster members will communicate with it through this address by default. If this is not correct, the report_host MySQL system variable should be changed.
Checking whether existing tables comply with Group Replication requirements...
No incompatible tables detected
Checking instance configuration...
Instance configuration is compatible with InnoDB cluster
The instance 'tidb61.com:3366' is valid to be used in an InnoDB cluster.
{
"status": "ok"
}
MySQL tidb60:3366 ssl JS >
检查节点3：tidb62:3366实例
MySQL tidb60:3366 ssl JS > dba.checkInstanceConfiguration("[email protected]:3366");
Please provide the password for '[email protected]:3366': ***
Validating MySQL instance at tidb62.com:3366 for use in an InnoDB cluster...
This instance reports its own address as tidb62.com:3366
Clients and other cluster members will communicate with it through this address by default. If this is not correct, the report_host MySQL system variable should be changed.
Checking whether existing tables comply with Group Replication requirements...
No incompatible tables detected
Checking instance configuration...
Instance configuration is compatible with InnoDB cluster
The instance 'tidb62.com:3366' is valid to be used in an InnoDB cluster.
{
"status": "ok"
}
MySQL tidb60:3366 ssl JS >
2.3 创建集群
可以在任一 一个节点上执行，根据测试发现初次加入集群的这节点最终是是master节点，即可以R/W
[[email protected] bin]# pwd
/home/jm/data/mysql-shell-8.0.20/bin
[[email protected] bin]# ./mysqlsh [email protected]:3366
Please provide the password for '[email protected]:3366': ***
MySQL Shell 8.0.20
Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its affiliates.
Other names may be trademarks of their respective owners.
Type '\help' or '\?' for help; '\quit' to exit.
Creating a session to '[email protected]:3366'
Fetching schema names for autocompletion... Press ^C to stop.
Your MySQL connection id is 37770
Server version: 8.0.20 MySQL Community Server - GPL
No default schema selected; type \use to set one.
MySQL tidb60:3366 ssl JS > var cluster = dba.createCluster('lixd');
A new InnoDB cluster will be created on instance 'tidb60:3366'.
Disabling super_read_only mode on instance 'tidb60.com:3366'.
Validating instance configuration at tidb60:3366...
This instance reports its own address as tidb60.com:3366
Instance configuration is suitable.
NOTE: Group Replication will communicate with other members using 'tidb60.com:33661'. Use the localAddress option to override.
Creating InnoDB cluster 'lixd' on 'tidb60.com:3366'...
Adding Seed Instance...
NOTE: Metadata schema found in target instance
Cluster successfully created. Use Cluster.addInstance() to add MySQL instances.
At least 3 instances are needed for the cluster to be able to withstand up to
one server failure.
MySQL tidb60:3366 ssl JS >
添加tidb61:3366实例到集群lixd中
MySQL tidb60:3366 ssl JS > cluster.addInstance('[email protected]:3366')
Please provide the password for '[email protected]:3366': ***
NOTE: The target instance 'tidb61.com:3366' has not been pre-provisioned (GTID set is empty). The Shell is unable to decide whether incremental state recovery can correctly provision it.
The safest and most convenient way to provision a new instance is through automatic clone provisioning, which will completely overwrite the state of 'tidb61.com:3366' with a physical snapshot from an existing cluster member. To use this method by default, set the 'recoveryMethod' option to 'clone'.
The incremental state recovery may be safely used if you are sure all updates ever executed in the cluster were done with GTIDs enabled, there are no purged transactions and the new instance contains the same GTID set as the cluster or a subset of it. To use this method by default, set the 'recoveryMethod' option to 'incremental'.
Please select a recovery method [C]lone/[I]ncremental recovery/[A]bort (default Clone): C
NOTE: Group Replication will communicate with other members using 'tidb61.com:33661'. Use the localAddress option to override.
Validating instance configuration at tidb61:3366...
This instance reports its own address as tidb61.com:3366
Instance configuration is suitable.
A new instance will be added to the InnoDB cluster. Depending on the amount of
data on the cluster this might take from a few seconds to several hours.
Adding instance to the cluster...
WARNING: User 'mysql_innodb_cluster_168613366'@'%' already existed at instance 'tidb60.com:3366'. It will be deleted and created again with a new password.
Monitoring recovery process of the new cluster member. Press ^C to stop monitoring and let it continue in background.
Clone based state recovery is now in progress.
NOTE: A server restart is expected to happen as part of the clone process. If the
server does not support the RESTART command or does not come back after a
while, you may need to manually start it back.
* Waiting for clone to finish...
NOTE: tidb61.com:3366 is being cloned from tidb60.com:3366
** Stage DROP DATA: Completed
** Clone Transfer
FILE COPY ############################################################ 100% Completed
PAGE COPY ############################################################ 100% Completed
REDO COPY ############################################################ 100% Completed
** Stage RECOVERY: \
NOTE: tidb61.com:3366 is shutting down...
* Waiting for server restart... ready
* tidb61.com:3366 has restarted, waiting for clone to finish...
* Clone process has finished: 1.12 GB transferred in 9 sec (125.00 MB/s)
State recovery already finished for 'tidb61.com:3366'
The instance 'tidb61:3366' was successfully added to the cluster.
添加tidb62:3366实例到集群lixd中
MySQL tidb60:3366 ssl JS > cluster.addInstance('[email protected]:3366')
Please provide the password for '[email protected]:3366': ***
NOTE: The target instance 'tidb62.com:3366' has not been pre-provisioned (GTID set is empty). The Shell is unable to decide whether incremental state recovery can correctly provision it.
The safest and most convenient way to provision a new instance is through automatic clone provisioning, which will completely overwrite the state of 'tidb62.com:3366' with a physical snapshot from an existing cluster member. To use this method by default, set the 'recoveryMethod' option to 'clone'.
The incremental state recovery may be safely used if you are sure all updates ever executed in the cluster were done with GTIDs enabled, there are no purged transactions and the new instance contains the same GTID set as the cluster or a subset of it. To use this method by default, set the 'recoveryMethod' option to 'incremental'.
Please select a recovery method [C]lone/[I]ncremental recovery/[A]bort (default Clone): C
NOTE: Group Replication will communicate with other members using 'tidb62.com:33661'. Use the localAddress option to override.
Validating instance configuration at tidb62:3366...
This instance reports its own address as tidb62.com:3366
Instance configuration is suitable.
A new instance will be added to the InnoDB cluster. Depending on the amount of
data on the cluster this might take from a few seconds to several hours.
Adding instance to the cluster...
WARNING: User 'mysql_innodb_cluster_168623366'@'%' already existed at instance 'tidb60.com:3366'. It will be deleted and created again with a new password.
Monitoring recovery process of the new cluster member. Press ^C to stop monitoring and let it continue in background.
Clone based state recovery is now in progress.
NOTE: A server restart is expected to happen as part of the clone process. If the
server does not support the RESTART command or does not come back after a
while, you may need to manually start it back.
* Waiting for clone to finish...
NOTE: tidb62.com:3366 is being cloned from tidb61.com:3366
** Stage DROP DATA: Completed
** Clone Transfer
FILE COPY ############################################################ 100% Completed
PAGE COPY ############################################################ 100% Completed
REDO COPY ############################################################ 100% Completed
NOTE: tidb62.com:3366 is shutting down...
* Waiting for server restart... ready
* tidb62.com:3366 has restarted, waiting for clone to finish...
** Stage RESTART: Completed
* Clone process has finished: 1.13 GB transferred in 9 sec (125.00 MB/s)
State recovery already finished for 'tidb62.com:3366'
The instance 'tidb62:3366' was successfully added to the cluster.
MySQL tidb60:3366 ssl JS >
查看集群的状态
MySQL tidb60:3366 ssl JS > var cluster = dba.getCluster('lixd')
MySQL tidb60:3366 ssl JS > cluster.status()
{
"clusterName": "lixd",
"defaultReplicaSet": {
"name": "default",
"primary": "tidb60.com:3366",
"ssl": "REQUIRED",
"status": "OK",
"statusText": "Cluster is ONLINE and can tolerate up to ONE failure.",
"topology": {
"tidb60.com:3366": {
"address": "tidb60.com:3366",
"mode": "R/W",
"readReplicas": {},
"replicationLag": null,
"role": "HA",
"status": "ONLINE",
"version": "8.0.20"
},
"tidb61.com:3366": {
"address": "tidb61.com:3366",
"mode": "R/O",
"readReplicas": {},
"replicationLag": null,
"role": "HA",
"status": "ONLINE",
"version": "8.0.20"
},
"tidb62.com:3366": {
"address": "tidb62.com:3366",
"mode": "R/O",
"readReplicas": {},
"replicationLag": null,
"role": "HA",
"status": "ONLINE",
"version": "8.0.20"
}
},
"topologyMode": "Single-Primary"
},
"groupInformationSourceMember": "tidb60.com:3366"
}
MySQL tidb60:3366 ssl JS >
mysqlroute 部署
[[email protected] bin]# pwd
/opt/mysql-route-8.0.20/bin
[[email protected] bin]# ./mysqlrouter --bootstrap [email protected]:3366 -d /opt/mysql-route-lixd --conf-use-sockets --user=mysql
Please enter MySQL password for dba:
# Bootstrapping MySQL Router instance at '/opt/mysql-route-lixd'...
- Creating account(s) (only those that are needed, if any)
- Verifying account (using it to run SQL queries that would be run by Router)
- Storing account in keyring
- Adjusting permissions of generated files
- Creating configuration /opt/mysql-route-lixd/mysqlrouter.conf
# MySQL Router configured for the InnoDB Cluster 'lixd'
After this MySQL Router has been started with the generated configuration
$ ./mysqlrouter -c /opt/mysql-route-lixd/mysqlrouter.conf
the cluster 'lixd' can be reached by connecting to:
## MySQL Classic protocol
- Read/Write Connections: localhost:6446, /opt/mysql-route-lixd/mysql.sock
- Read/Only Connections: localhost:6447, /opt/mysql-route-lixd/mysqlro.sock
## MySQL X protocol
- Read/Write Connections: localhost:64460, /opt/mysql-route-lixd/mysqlx.sock
- Read/Only Connections: localhost:64470, /opt/mysql-route-lixd/mysqlxro.sock
[[email protected] bin]#
启动mysqlroute
[[email protected] mysql-route-lixd]# pwd
/opt/mysql-route-lixd
[[email protected] mysql-route-lixd]# ls -l
总用量 16
drwx------. 2 mysql mysql 39 5月 9 15:06 data
drwx------. 2 mysql mysql 29 5月 9 15:06 log
-rw-------. 1 mysql mysql 1400 5月 9 15:06 mysqlrouter.conf
-rw-------. 1 mysql mysql 92 5月 9 15:06 mysqlrouter.key
drwx------. 2 mysql mysql 6 5月 9 15:06 run
-rwx------. 1 mysql mysql 329 5月 9 15:06 start.sh
-rwx------. 1 mysql mysql 173 5月 9 15:06 stop.sh
[[email protected] mysql-route-lixd]# sh start.sh
[[email protected] mysql-route-lixd]# PID 124156 written to '/opt/mysql-route-lixd/mysqlrouter.pid'
logging facility initialized, switching logging to loggers specified in configuration
[[email protected] mysql-route-lixd]#
[[email protected] mysql-route-lixd]#
查看route对应的日志
[[email protected] log]# pwd
/opt/mysql-route-lixd/log
[[email protected] log]# more mysqlrouter.log
2020-05-09 15:08:25 routing INFO [7f929cc76700] [routing:lixd_ro] started: listening on 0.0.0.0:6447, routing strategy = round-robin-with-fallback
2020-05-09 15:08:25 routing INFO [7f92977fe700] [routing:lixd_x_ro] started: listening on 0.0.0.0:64470, routing strategy = round-robin-with-fallback
2020-05-09 15:08:25 routing INFO [7f9296ffd700] [routing:lixd_x_rw] started: listening on 0.0.0.0:64460, routing strategy = first-available
2020-05-09 15:08:25 routing INFO [7f9297fff700] [routing:lixd_rw] started: listening on 0.0.0.0:6446, routing strategy = first-available
2020-05-09 15:08:25 routing INFO [7f929cc76700] [routing:lixd_ro] started: listening using /opt/mysql-route-lixd/mysqlro.sock
2020-05-09 15:08:25 routing INFO [7f92977fe700] [routing:lixd_x_ro] started: listening using /opt/mysql-route-lixd/mysqlxro.sock
2020-05-09 15:08:25 routing INFO [7f9296ffd700] [routing:lixd_x_rw] started: listening using /opt/mysql-route-lixd/mysqlx.sock
2020-05-09 15:08:25 routing INFO [7f9297fff700] [routing:lixd_rw] started: listening using /opt/mysql-route-lixd/mysql.sock
2020-05-09 15:08:25 metadata_cache INFO [7f929d477700] Starting Metadata Cache
2020-05-09 15:08:25 metadata_cache INFO [7f929d477700] Connections using ssl_mode 'PREFERRED'
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] Starting metadata cache refresh thread
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] Potential changes detected in cluster 'lixd' after metadata refresh
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] Metadata for cluster 'lixd' has 1 replicasets:
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] 'default' (3 members, single-master)
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] tidb60.com:3366 / 33060 - role=HA mode=RW
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] tidb61.com:3366 / 33060 - role=HA mode=RO
2020-05-09 15:08:25 metadata_cache INFO [7f92a05b2700] tidb62.com:3366 / 33060 - role=HA mode=RO
2020-05-09 15:08:25 routing INFO [7f92a05b2700] Routing routing:lixd_x_ro listening on 64470 and named socket /opt/mysql-route-lixd/mysqlxro.sock got request to disconnect invalid connections
: metadata change
2020-05-09 15:08:25 routing INFO [7f92a05b2700] Routing routing:lixd_x_rw listening on 64460 and named socket /opt/mysql-route-lixd/mysqlx.sock got request to disconnect invalid connections:
metadata change
2020-05-09 15:08:25 routing INFO [7f92a05b2700] Routing routing:lixd_rw listening on 6446 and named socket /opt/mysql-route-lixd/mysql.sock got request to disconnect invalid connections: meta
data change
2020-05-09 15:08:25 routing INFO [7f92a05b2700] Routing routing:lixd_ro listening on 6447 and named socket /opt/mysql-route-lixd/mysqlro.sock got request to disconnect invalid connections: me
tadata change
[[email protected] log]#
通过mysqlroute访问mysql读操作(端口6447，可以见route对应的日志中的提示)
[[email protected] ~]# mysql -htidb63 -udba -pdba -P6447 -e "select @@hostname"
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| tidb61.com |
+------------+
[[email protected] ~]# mysql -htidb63 -udba -pdba -P6447 -e "select @@hostname"
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| tidb62.com |
+------------+
[[email protected] ~]# mysql -htidb63 -udba -pdba -P6447 -e "select @@hostname"
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| tidb61.com |
+------------+
[[email protected] ~]# mysql -htidb63 -udba -pdba -P6447 -e "select @@hostname"
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| tidb62.com |
+------------+
[[email protected] ~]#
轮询访问每个只读的实例，这里是轮询访问tidb61:3366和tidb62:3366实例。
通过route访问master实例(端口是6446，可以在router日志里的提示查看)
[[email protected] ~]# mysql -htidb63 -udba -pdba -P6446 -e "select @@hostname"
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| tidb60.com |
+------------+
[[email protected] ~]#
到此，一个简单mysql innodb cluster环境部署完成。