centos mysql5.7.24 多主多從叢集搭建
阿新 • • 發佈：2018-12-15
系統
[[email protected] ~]# uname -a
Linux i-ec0m1585 3.10.0-327.4.5.el7.x86_64 #1 SMP Mon Jan 25 22:07:14 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
主機名稱
| hostname | ip | mysql port |
|---|---|---|
| mysql-master-60 | 10.39.47.60 | 3307 |
| mysql-master-61 | 10.39.47.61 | 3308 |
| mysql-slave-62 | 10.39.47.62 | 3309 |
| mysql-slave-63 | 10.39.47.63 | 3310 |
用的是ansible安裝工具輔助安裝
host檔案如下
➜ ansible cat hosts [cache] 10.39.47.60 10.39.47.61 10.39.47.62 10.39.47.63
設定靜態IP例子，不需要設定固定IP的略過
vi /etc/sysconfig/network-script/ifcfg-xxx
IPADDR=10.39.47.60 #靜態IP
增加mysql yum源 以及部署mysql
ansible -i hosts cache -u root -m shell -a 'cd /opt/;wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm' ansible -i hosts cache -u root -m shell -a 'cd /opt/;rpm -ivh mysql57-community-release-el7-8.noarch.rpm' ansible -i hosts cache -u root -m shell -a 'yum update -y;yum -y install mysql-server'
關閉selinux
sed -i 's/SELINUX=.*/SELINUX=disabled/' /etc/selinux/config
setenforce 0
systemctl stop firewalld
systemctl disable firewalld
mkdir /home/usr/local/mysql-5.7.24/data/3307/
chown -R /home/usr/local/mysql-5.7.24/data
查詢密碼方法
[[email protected] ~]# grep "password" /usr/local/mysql-5.7.18/data/3310/error.log
2018-10-23T15:29:30.152796Z 1 [Note] A temporary password is generated for [email protected]: 5K:j-*h&Pksu
啟動mysql
systemctl start mysqld
systemctl status mysqld
各個節點的配置
[[email protected] ~]# cat /etc/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[client]
port = 3310
socket = /usr/local/mysql-5.7.18/data/3310/mysql.sock
default-character-set=utf8
[mysqld]
port = 3310
socket = /usr/local/mysql-5.7.18/data/3310/mysql.sock
datadir = /usr/local/mysql-5.7.18/data/3310
log-error = /usr/local/mysql-5.7.18/data/3310/error.log
pid-file = /usr/local/mysql-5.7.18/data/3310/mysql.pid
symbolic-links=1
character-set-server=utf8
lower_case_table_names=1
log-bin=mysql-bin
relay-log = /usr/local/mysql-5.7.18/data/3310/mysqld-relay-bin
server-id=3310
autocommit = 1
[[email protected] ~]# cat /etc/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[client]
port = 3309
socket = /usr/local/mysql-5.7.18/data/3309/mysql.sock
default-character-set=utf8
[mysqld]
port = 3309
socket = /usr/local/mysql-5.7.18/data/3309/mysql.sock
datadir = /usr/local/mysql-5.7.18/data/3309
log-error = /usr/local/mysql-5.7.18/data/3309/error.log
pid-file = /usr/local/mysql-5.7.18/data/3309/mysql.pid
symbolic-links=1
character-set-server=utf8
lower_case_table_names=1
relay-log = /usr/local/mysql-5.7.18/data/3309/mysqld-relay-bin
log-bin=mysql-bin
server-id=3309
autocommit = 1
[[email protected] ~]# cat /etc/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[client]
port = 3308
socket = /usr/local/mysql-5.7.18/data/3308/mysql.sock
default-character-set=utf8
[mysqld]
port = 3308
socket = /usr/local/mysql-5.7.18/data/3308/mysql.sock
datadir = /usr/local/mysql-5.7.18/data/3308
log-error = /usr/local/mysql-5.7.18/data/3308/error.log
pid-file = /usr/local/mysql-5.7.18/data/3308/mysql.pid
symbolic-links=1
character-set-server=utf8
lower_case_table_names=1
log-bin=mysql-bin
server-id=3308
autocommit = 1
auto_increment_increment=2
auto_increment_offset=2
log-slave-updates
sync_binlog=1
[[email protected] ~]# cat /etc/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[client]
port = 3307
socket = /usr/local/mysql-5.7.18/data/3307/mysql.sock
default-character-set=utf8
[mysqld]
port = 3307
socket = /usr/local/mysql-5.7.18/data/3307/mysql.sock
datadir = /usr/local/mysql-5.7.18/data/3307
log-error = /usr/local/mysql-5.7.18/data/3307/error.log
pid-file = /usr/local/mysql-5.7.18/data/3307/mysql.pid
symbolic-links=1
character-set-server=utf8
lower_case_table_names=1
log-bin=mysql-bin
server-id=3307
autocommit = 1
auto_increment_increment=2
auto_increment_offset=1
log-slave-updates
sync_binlog=1
修改密碼
[email protected] ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 17
Server version: 5.7.24-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, 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 '\h' for help. Type '\c' to clear the current input statement.
mysql>
修改密碼命令
SET PASSWORD = PASSWORD('enN$#12345');
alter user [email protected]"localhost" identified by 'xxx';
flush privileges;
在兩個master建立複製使用者
grant replication slave on *.* to 'copy'@'%' identified by 'xxx';
flush privileges;
在master節點上重置master服務的狀態
reset master;
在slave節點上
stop slave;
reset slave;
reset master;
在master上檢視
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 154 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
如果已經執行，可以略過
SET PASSWORD = PASSWORD('xxx');
alter user [email protected]"localhost" identified by 'xxx';
flush privileges;
grant replication slave on *.* to 'copy'@'%' identified by 'xxx';
flush privileges;
在Slave上設定Master（相當於是4臺都需要設定）
設定從伺服器3308、3309，他們的主均為3307，即在3308和3309上執行如下操作
change master to master_host='10.39.47.60',
master_user='copy',
master_password='xxx',
master_port=3307,
master_log_file='mysql-bin.000001',
master_log_pos=154;
設定從伺服器3310、3307，他們的主均為3308，即在3310和3307上執行如下操作
change master to master_host='10.39.47.61',
master_user='copy',
master_password='enN$#12345',
master_port=3308,
master_log_file='mysql-bin.000001',
master_log_pos=154;
在所有的節點執行，確保這兩個引數處於yes狀態Slave_IO_Running: Yes，Slave_SQL_Running: Yes 即表示複製功能配置正常
例如:
start slave;
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.39.47.61
Master_User: copy
Master_Port: 3308
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 318
Relay_Log_File: couchbase-60-relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 318
Relay_Log_Space: 534
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 3308
Master_UUID: 92c1778a-d6d6-11e8-90a1-525489ddae8b
Master_Info_File: /usr/local/mysql-5.7.18/data/3307/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
經常用的命令
stop slave;
reset slave;
reset master;
show slave status \G
遇到的問題
日誌
2018-10-24T02:59:03.680461Z 25 [ERROR] Slave I/O for channel '': Got fatal error 1236 from master when reading data from binary log: 'unknown error reading log event on the master; the first event 'mysql-bin.000001' at 154, the last event read from './mysql-bin.000001' at 318, the last byte read from './mysql-bin.000001' at 318.', Error_code: 1236
解決辦法
http://blog.51cto.com/461205160/1737721
https://www.cnblogs.com/cobbliu/p/4311926.html
mysqlbinlog --no-defaults /usr/local/mysql-5.7.18/data/3307/mysql-bin.000001 > test.txt
mysql> stop slave;
Query OK, 0 rows affected (0.16 sec)
mysql> change master to master_log_file='mysql-bin.000001',master_log_pos=123;
Query OK, 0 rows affected (0.03 sec)
mysql> start slave;
經過測試成功
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| demo |
| demo01 |
| hello |
| mysql |
| performance_schema |
| sys |
+--------------------+
7 rows in set (0.00 sec)
高可用搭建
安裝mysql-mmm
新增一臺機器10.39.47.64
需要在這60，61，62，63，64臺 上都安裝 mysql-mmm
通過ansible安裝mysql-mmm工具，先裝epel-release源
ansible -i hosts cache -u root -m shell -a 'yum install epel-release -y'
ansible -i hosts cache -u root -m shell -a 'yum update -y'
ansible -i hosts cache -u root -m shell -a 'yum install -y mysql-mmm* '
配置mmm代理和監控賬號的許可權
現在環境已經配置好，我沒有配置忽略 mysql庫和 user表，所以只要在任意一臺主庫上執行下面的操作，其他的庫就都有這倆賬號了。
mysql> GRANT REPLICATION CLIENT ON *.* TO 'mmm_monitor'@'10.39.47.%' IDENTIFIED BY 'xxx';
mysql> GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO 'mmm_agent'@'10.39.47.%' IDENTIFIED BY 'xxx';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.06 sec)
注：60,61,62,63 是一樣的
檢視
mysql> select user,host from mysql.user;
+---------------+------------+
| user | host |
+---------------+------------+
| mmm_agent | 10.39.47.% |
| mmm_monitor | 10.39.47.% |
| mysql.session | localhost |
| mysql.sys | localhost |
| root | localhost |
+---------------+------------+
5 rows in set (0.00 sec)
新建mmm_common.conf檔案
vi mmm_common.conf
active_master_role writer
cluster_interface eth0
pid_path /var/run/mysql-mmm/mmm_agentd.pid
bin_path /usr/libexec/mysql-mmm/
replication_user copy
replication_password enN$#12345
agent_user mmm_agent
agent_password enN$#12345
ip 10.39.47.60
mode master
peer mysql-master-60
ip 10.39.47.61
mode master
peer mysql-master-61
ip 10.39.47.62
mode slave
ip 10.39.47.63
mode slave
hosts mysql-master-60 mysql-master-61
ips 10.39.47.65
mode exclusive
hosts db1, db2, db3
ips 10.0.0.15, 10.0.0.16
mode balanced
由於issa不支援VIP高可用未完待續，
高可用部署可參考
http://www.cnblogs.com/gomysql/p/3671896.html
http://www.cnblogs.com/chenmh/p/5563778.html
http://blog.51cto.com/lizhenliang/1354576
http://mysql-mmm.org/doku.php
參考:
CentOS 7 下使用yum安裝MySQL5.7.20 最簡單 圖文詳解
linux-installation-yum-repo 5.7
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mysql 多主多從
Mysql叢集講解(四) 一主多從環境搭建
de