1辙浑、編寫(xiě)腳本，支持讓用戶(hù)自主選擇由缆，使用mysqldump還是xtraback全量備份汗盘。
#!/bin/bash
BACKUP_DIR=/data
USER=root
PASSWORD=123456
select var in {'mysqldump','xtraback'} ;do
case $var in
'mysqldump' )
# mysqldump
mysqldump -A -u$USER -F -E -R -x -p$PASSWORD --master-data=1\
--flush-privileges --triggers \
--default-character-set=utf8 --hex-blob\
>$BACKUP_DIR/fullbak_`date +%F-%T`.sql
;;
'xtraback' )
# xtraback
innobackupex --user=$USER --password=$PASSWORD $BACKUP_DIR
;;
* ) echo 'please choice mysqldump or xtraback';;
esac
break
done
2皱碘、配置Mysql主從同步
| 主機(jī)IP | 角色 |
|---|---|
| 192.168.58.139 | 主 |
| 192.168.58.140 | 從 |
https://dev.mysql.com/downloads/repo/yum/
2.1. 安裝主節(jié)點(diǎn)
# 安裝MySQL官方Y(jié)UM源
~]# wget https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm
~]# rpm -ivh mysql80-community-release-el7-3.noarch.rpm
# 安裝MySQL
~]# yum install mysql-community-server -y
# 啟動(dòng)MySQL
~]# systemctl enable mysqld.service
~]# systemctl start mysqld.service
# 啟動(dòng)日志中找到初始密碼
~]# cat /var/log/mysqld.log
2020-03-21T10:37:16.974791Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.19) initializing of server in progress as process 26718
2020-03-21T10:37:18.435015Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: Yp(r#yidX1K)
2020-03-21T10:37:20.546231Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.19) starting as process 26770
2020-03-21T10:37:20.893411Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2020-03-21T10:37:20.925400Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.19' socket: '/var/lib/mysql/mysql.sock' port: 3306 MySQL Community Server - GPL.
2020-03-21T10:37:21.024553Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock' bind-address: '::' port: 33060
# 使用初始密碼登錄MySQL
~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.19
Copyright (c) 2000, 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 '\h' for help. Type '\c' to clear the current input statement.
mysql>
# 修改初始密碼
mysql> alter user 'root'@'localhost'IDENTIFIED BY 'MyNewPass@123';
Query OK, 0 rows affected (0.01 sec)
mysql> create database demo;
Query OK, 1 row affected (0.01 sec)
# 創(chuàng)建測(cè)試庫(kù)，測(cè)試表
mysql> use demo;
Database changed
mysql> CREATE TABLE `test_tab` (
-> `id` int(11) NOT NULL AUTO_INCREMENT,
-> `name` varchar(20) DEFAULT NULL,
-> `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-> PRIMARY KEY (`id`)
-> ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Query OK, 0 rows affected, 2 warnings (0.05 sec)
2.2 主節(jié)點(diǎn)打開(kāi) binlog
# [mysqld] 配置段添加 binlog 配置
~]# vi /etc/my.cnf
[mysqld]
...
log_bin=/data/mysql/binlogs/server1
server_id=100
# 創(chuàng)建binglog目錄并修改其權(quán)限隐孽，并禁用selinux
~]# mkdir -p /data/mysql/binlogs
~]# chown -R mysql:mysql /data/mysql/binlogs
# 重啟mysql
~]# systemctl restart mysqld.service
mysql> show variables like 'log_bin%';
+---------------------------------+-----------------------------------+
| Variable_name | Value |
+---------------------------------+-----------------------------------+
| log_bin | ON |
| log_bin_basename | /data/mysql/binlogs/server1 |
| log_bin_index | /data/mysql/binlogs/server1.index |
| log_bin_trust_function_creators | OFF |
| log_bin_use_v1_row_events | OFF |
+---------------------------------+-----------------------------------+
5 rows in set (0.00 sec)
mysql> show master logs;
+----------------+-----------+-----------+
| Log_name | File_size | Encrypted |
+----------------+-----------+-----------+
| server1.000001 | 155 | No |
+----------------+-----------+-----------+
1 row in set (0.00 sec)
~]# ll /data/mysql/binlogs/
total 8
-rw-r-----. 1 mysql mysql 155 Mar 21 19:31 server1.000001
-rw-r-----. 1 mysql mysql 35 Mar 21 19:31 server1.index
2.3 準(zhǔn)備復(fù)制
# 在主節(jié)點(diǎn)上 創(chuàng)建復(fù)制用戶(hù)
mysql> CREATE USER 'repl'@'192.168.58.%' IDENTIFIED WITH mysql_native_password BY 'MyNewPass@123';
Query OK, 0 rows affected (0.01 sec)
mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.58.%';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
# 將主節(jié)點(diǎn)上的數(shù)據(jù)導(dǎo)出癌椿，并復(fù)制到從節(jié)點(diǎn)
~]# mysqldump -uroot -p --single-transaction --master-data=2 -A > master_dump.sql
~]# scp master_dump.sql root@192.168.58.140:/tmp/
2.4 創(chuàng)建從庫(kù)
#采用同樣的方式安裝MySQL家凯，并修改 server_id
~]# vi /etc/my.cnf
...
log_bin=/data/mysql/binlogs/server1
server_id=101
...
# 重啟服務(wù)
~]# systemctl restart mysqld.service
# 導(dǎo)入主庫(kù)數(shù)據(jù)
~]# mysql -uroot -p < /tmp/master_dump.sql
# 在導(dǎo)出的數(shù)據(jù)文件的中找到 master MASTER_LOG_FILE 和 MASTER_LOG_FILE
~]# head -n 40 /tmp/master_dump.sql
-- MySQL dump 10.13 Distrib 8.0.19, for Linux (x86_64)
--
-- Host: localhost Database:
-- ------------------------------------------------------
-- Server version 8.0.19
...
-- CHANGE MASTER TO MASTER_LOG_FILE='server1.000001', MASTER_LOG_FILE=419575;
...
# 將 master 指向主庫(kù)
mysql> CHANGE MASTER TO MASTER_HOST='192.168.58.139',
-> MASTER_USER='repl',
-> MASTER_PASSWORD='MyNewPass@123',
-> MASTER_LOG_FILE='server1.000001',
-> MASTER_LOG_POS=419575;
Query OK, 0 rows affected, 2 warnings (0.04 sec)
# 開(kāi)始復(fù)制
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.58.139
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: server1.000001
Read_Master_Log_Pos: 3799819
Relay_Log_File: node01-relay-bin.000002
Relay_Log_Pos: 3380564
Relay_Master_Log_File: server1.000001
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: 3799819
Relay_Log_Space: 3380773
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: 100
Master_UUID: eff14492-6b5f-11ea-a887-000c298cc2bc
Master_Info_File: mysql.slave_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:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
1 row in set (0.00 sec)
# 在主從上驗(yàn)證數(shù)據(jù)是否一致
mysql> select count(1) from test_tab;
+----------+
| count(1) |
+----------+
| 13156 |
+----------+
1 row in set (0.00 sec)
3、使用MHA實(shí)現(xiàn)Mysql高可用如失。
https://github.com/yoshinorim/mha4mysql-manager
https://github.com/yoshinorim/mha4mysql-node
https://github.com/yoshinorim/mha4mysql-manager/wiki
3.1 配置主從
在上面主從配置 2.4節(jié) 的基礎(chǔ)上新增一個(gè)從節(jié)點(diǎn)
| 主機(jī)IP | 角色 |
|---|---|
| 192.168.58.139 | 主绊诲、MHA Node |
| 192.168.58.140 | 從、MHA Node |
| 192.168.58.141 | 從褪贵、MHA Node |
| 192.168.58.149 | MHA Manager |
# 在主庫(kù)上查看 2 個(gè)從庫(kù)
mysql> show slave hosts;
+-----------+------+------+-----------+--------------------------------------+
| Server_id | Host | Port | Master_id | Slave_UUID |
+-----------+------+------+-----------+--------------------------------------+
| 101 | | 3306 | 100 | e37e0733-6b6a-11ea-aaac-000c2990c4ca |
| 102 | | 3306 | 100 | b713a552-6b6a-11ea-94c2-000c29fad781 |
+-----------+------+------+-----------+--------------------------------------+
2 rows in set (0.00 sec)
# 創(chuàng)建 MHA 管理用戶(hù)
mysql> CREATE USER dba_mha@'192.168.58.%' IDENTIFIED WITH mysql_native_password BY 'MyNewPass@123';
Query OK, 0 rows affected (0.01 sec)
mysql> GRANT ALL PRIVILEGES ON *.* TO dba_mha@'192.168.58.%';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
3.2 配置SSH免密
# 在192.168.58.139上配置免密掂之，配置完免密以后 4 臺(tái)機(jī)器可以相互免密
~]# ssh-keygen
~]# ssh-copy-id 192.168.58.139
~]# scp -r .ssh root@192.168.58.140:/root/
~]# scp -r .ssh root@192.168.58.141:/root/
~]# scp -r .ssh root@192.168.58.149:/root/
3.3 安裝配置 MHA Manager
~]# yum install epel-release -y
~]# yum install perl-DBD-MySQL \
perl-Config-Tiny \
perl-Log-Dispatch \
perl-Parallel-ForkManager -y
~]# rpm -ivh mha4mysql-node-0.58-0.el7.centos.noarch.rpm
~]# rpm -ivh mha4mysql-manager-0.58-0.el7.centos.noarch.rpm
~]# mkdir -p /usr/local/mha
~]# mkdir -p /etc/mha
~]# cat /etc/mha/mha.conf
[server default]
# mysql user and password
user=dba_mha
password=MyNewPass@123
repl_user=repl
repl_password=MyNewPass@123
# working directory on the manager
manager_workdir=/usr/local/mha
# manager log file
manager_log=/usr/local/mha/manager.log
# working directory on MySQL servers
remote_workdir=/usr/local/mha
master_binlog_dir= /data/mysql/binlogs/
master_ip_failover_script = /usr/local/mha/master_ip_failover -network_type=ens33 --gateway=192.168.58.2 --virtual_ip=192.168.58.110 --key=2
secondary_check_script = /usr/bin/masterha_secondary_check -s 192.168.58.139 -s 192.168.58.140 -s 192.168.58.141
[server1]
hostname=192.168.58.139
candidate_master=1
[server2]
hostname=192.168.58.140
candidate_master=1
[server3]
hostname=192.168.58.141
no_master=1
~]# vi /usr/local/mha/master_ip_failover
#!/usr/bin/env perl
use strict;
use warnings FATAL => 'all';
use Getopt::Long;
my (
$command, $orig_master_host, $orig_master_ip,$ssh_user,
$orig_master_port, $new_master_host, $new_master_ip,$new_master_port,
$orig_master_ssh_port,$new_master_ssh_port,$new_master_user,$new_master_password
);
my $vip = '192.168.56.110/24';
my $key = '1';
my $ssh_start_vip = "/sbin/ifconfig enp0s3:$key $vip";
my $ssh_stop_vip = "/sbin/ifconfig enp0s3:$key down";
my $ssh_Bcast_arp= "/sbin/arping -I enp0s3 -c 3 -A 192.168.56.110";
GetOptions(
'command=s' => \$command,
'ssh_user=s' => \$ssh_user,
'orig_master_host=s' => \$orig_master_host,
'orig_master_ip=s' => \$orig_master_ip,
'orig_master_port=i' => \$orig_master_port,
'orig_master_ssh_port=i' => \$orig_master_ssh_port,
'new_master_host=s' => \$new_master_host,
'new_master_ip=s' => \$new_master_ip,
'new_master_port=i' => \$new_master_port,
'new_master_ssh_port' => \$new_master_ssh_port,
'new_master_user' => \$new_master_user,
'new_master_password' => \$new_master_password
);
exit &main();
sub main {
$ssh_user = defined $ssh_user ? $ssh_user : 'root';
print "\n\nIN SCRIPT TEST====$ssh_user|$ssh_stop_vip==$ssh_user|$ssh_start_vip===\n\n";
if ( $command eq "stop" || $command eq "stopssh" ) {
my $exit_code = 1;
eval {
print "Disabling the VIP on old master: $orig_master_host \n";
&stop_vip();
$exit_code = 0;
};
if ($@) {
warn "Got Error: $@\n";
exit $exit_code;
}
exit $exit_code;
}
elsif ( $command eq "start" ) {
my $exit_code = 10;
eval {
print "Enabling the VIP - $vip on the new master - $new_master_host \n";
&start_vip();
&start_arp();
$exit_code = 0;
};
if ($@) {
warn $@;
exit $exit_code;
}
exit $exit_code;
}
elsif ( $command eq "status" ) {
print "Checking the Status of the script.. OK \n";
exit 0;
}
else {
&usage();
exit 1;
}
}
sub start_vip() {
`ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;
}
sub stop_vip() {
`ssh $ssh_user\@$orig_master_host \" $ssh_stop_vip \"`;
}
sub start_arp() {
`ssh $ssh_user\@$new_master_host \" $ssh_Bcast_arp \"`;
}
sub usage {
print
"Usage: master_ip_failover --command=start|stop|stopssh|status --ssh_user=user --orig_master_host=host --orig_master_ip=ip --orig_master_port=port --new_master_host=host --new_master_ip=ip --new_master_port=port\n";
}
~]# chmod +x /usr/local/mha/master_ip_failover
~]# masterha_check_ssh --conf=/etc/mha/mha.conf
Sun Mar 22 02:56:24 2020 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Sun Mar 22 02:56:24 2020 - [info] Reading application default configuration from /etc/mha/mha.conf..
Sun Mar 22 02:56:24 2020 - [info] Reading server configuration from /etc/mha/mha.conf..
Sun Mar 22 02:56:24 2020 - [info] Starting SSH connection tests..
Sun Mar 22 02:56:26 2020 - [debug]
Sun Mar 22 02:56:24 2020 - [debug] Connecting via SSH from root@192.168.58.139(192.168.58.139:22) to root@192.168.58.140(192.168.58.140:22)..
Sun Mar 22 02:56:25 2020 - [debug] ok.
Sun Mar 22 02:56:25 2020 - [debug] Connecting via SSH from root@192.168.58.139(192.168.58.139:22) to root@192.168.58.141(192.168.58.141:22)..
Sun Mar 22 02:56:25 2020 - [debug] ok.
Sun Mar 22 02:56:27 2020 - [debug]
Sun Mar 22 02:56:25 2020 - [debug] Connecting via SSH from root@192.168.58.141(192.168.58.141:22) to root@192.168.58.139(192.168.58.139:22)..
Sun Mar 22 02:56:26 2020 - [debug] ok.
Sun Mar 22 02:56:26 2020 - [debug] Connecting via SSH from root@192.168.58.141(192.168.58.141:22) to root@192.168.58.140(192.168.58.140:22)..
Sun Mar 22 02:56:26 2020 - [debug] ok.
Sun Mar 22 02:56:27 2020 - [debug]
Sun Mar 22 02:56:25 2020 - [debug] Connecting via SSH from root@192.168.58.140(192.168.58.140:22) to root@192.168.58.139(192.168.58.139:22)..
Sun Mar 22 02:56:25 2020 - [debug] ok.
Sun Mar 22 02:56:25 2020 - [debug] Connecting via SSH from root@192.168.58.140(192.168.58.140:22) to root@192.168.58.141(192.168.58.141:22)..
Sun Mar 22 02:56:26 2020 - [debug] ok.
Sun Mar 22 02:56:27 2020 - [info] All SSH connection tests passed successfully.
~]# masterha_check_repl --conf=/etc/mha/mha.conf Mon Mar 23 01:19:16 2020 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Mon Mar 23 01:19:16 2020 - [info] Reading application default configuration from /etc/mha/mha.conf..
Mon Mar 23 01:19:16 2020 - [info] Reading server configuration from /etc/mha/mha.conf..
Mon Mar 23 01:19:16 2020 - [info] MHA::MasterMonitor version 0.58.
Mon Mar 23 01:19:18 2020 - [info] GTID failover mode = 0
Mon Mar 23 01:19:18 2020 - [info] Dead Servers:
Mon Mar 23 01:19:18 2020 - [info] Alive Servers:
Mon Mar 23 01:19:18 2020 - [info] 192.168.58.139(192.168.58.139:3306)
Mon Mar 23 01:19:18 2020 - [info] 192.168.58.140(192.168.58.140:3306)
Mon Mar 23 01:19:18 2020 - [info] 192.168.58.141(192.168.58.141:3306)
Mon Mar 23 01:19:18 2020 - [info] Alive Slaves:
Mon Mar 23 01:19:18 2020 - [info] 192.168.58.140(192.168.58.140:3306) Version=8.0.19 (oldest major version between slaves) log-bin:enabled
Mon Mar 23 01:19:18 2020 - [info] Replicating from 192.168.58.139(192.168.58.139:3306)
Mon Mar 23 01:19:18 2020 - [info] Primary candidate for the new Master (candidate_master is set)
Mon Mar 23 01:19:18 2020 - [info] 192.168.58.141(192.168.58.141:3306) Version=8.0.19 (oldest major version between slaves) log-bin:enabled
Mon Mar 23 01:19:18 2020 - [info] Replicating from 192.168.58.139(192.168.58.139:3306)
Mon Mar 23 01:19:18 2020 - [info] Not candidate for the new Master (no_master is set)
Mon Mar 23 01:19:18 2020 - [info] Current Alive Master: 192.168.58.139(192.168.58.139:3306)
Mon Mar 23 01:19:18 2020 - [info] Checking slave configurations..
Mon Mar 23 01:19:18 2020 - [info] read_only=1 is not set on slave 192.168.58.140(192.168.58.140:3306).
Mon Mar 23 01:19:18 2020 - [warning] relay_log_purge=0 is not set on slave 192.168.58.140(192.168.58.140:3306).
Mon Mar 23 01:19:18 2020 - [info] read_only=1 is not set on slave 192.168.58.141(192.168.58.141:3306).
Mon Mar 23 01:19:18 2020 - [warning] relay_log_purge=0 is not set on slave 192.168.58.141(192.168.58.141:3306).
Mon Mar 23 01:19:18 2020 - [info] Checking replication filtering settings..
Mon Mar 23 01:19:18 2020 - [info] binlog_do_db= , binlog_ignore_db=
Mon Mar 23 01:19:18 2020 - [info] Replication filtering check ok.
Mon Mar 23 01:19:18 2020 - [info] GTID (with auto-pos) is not supported
Mon Mar 23 01:19:18 2020 - [info] Starting SSH connection tests..
Mon Mar 23 01:19:20 2020 - [info] All SSH connection tests passed successfully.
Mon Mar 23 01:19:20 2020 - [info] Checking MHA Node version..
Mon Mar 23 01:19:21 2020 - [info] Version check ok.
Mon Mar 23 01:19:21 2020 - [info] Checking SSH publickey authentication settings on the current master..
Mon Mar 23 01:19:21 2020 - [info] HealthCheck: SSH to 192.168.58.139 is reachable.
Mon Mar 23 01:19:21 2020 - [info] Master MHA Node version is 0.58.
Mon Mar 23 01:19:21 2020 - [info] Checking recovery script configurations on 192.168.58.139(192.168.58.139:3306)..
Mon Mar 23 01:19:21 2020 - [info] Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/data/mysql/binlogs/ --output_file=/usr/local/mha/save_binary_logs_test --manager_version=0.58 --start_file=server1.000002
Mon Mar 23 01:19:21 2020 - [info] Connecting to root@192.168.58.139(192.168.58.139:22)..
Creating /usr/local/mha if not exists.. ok.
Checking output directory is accessible or not..
ok.
Binlog found at /data/mysql/binlogs/, up to server1.000002
Mon Mar 23 01:19:21 2020 - [info] Binlog setting check done.
Mon Mar 23 01:19:21 2020 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..
Mon Mar 23 01:19:21 2020 - [info] Executing command : apply_diff_relay_logs --command=test --slave_user='dba_mha' --slave_host=192.168.58.140 --slave_ip=192.168.58.140 --slave_port=3306 --workdir=/usr/local/mha --target_version=8.0.19 --manager_version=0.58 --relay_dir=/var/lib/mysql --current_relay_log=node01-relay-bin.000005 --slave_pass=xxx
Mon Mar 23 01:19:21 2020 - [info] Connecting to root@192.168.58.140(192.168.58.140:22)..
Checking slave recovery environment settings..
Relay log found at /var/lib/mysql, up to node01-relay-bin.000005
Temporary relay log file is /var/lib/mysql/node01-relay-bin.000005
Checking if super_read_only is defined and turned on.. not present or turned off, ignoring.
Testing mysql connection and privileges..
mysql: [Warning] Using a password on the command line interface can be insecure.
done.
Testing mysqlbinlog output.. done.
Cleaning up test file(s).. done.
Mon Mar 23 01:19:22 2020 - [info] Executing command : apply_diff_relay_logs --command=test --slave_user='dba_mha' --slave_host=192.168.58.141 --slave_ip=192.168.58.141 --slave_port=3306 --workdir=/usr/local/mha --target_version=8.0.19 --manager_version=0.58 --relay_dir=/var/lib/mysql --current_relay_log=node02-relay-bin.000005 --slave_pass=xxx
Mon Mar 23 01:19:22 2020 - [info] Connecting to root@192.168.58.141(192.168.58.141:22)..
Checking slave recovery environment settings..
Relay log found at /var/lib/mysql, up to node02-relay-bin.000005
Temporary relay log file is /var/lib/mysql/node02-relay-bin.000005
Checking if super_read_only is defined and turned on.. not present or turned off, ignoring.
Testing mysql connection and privileges..
mysql: [Warning] Using a password on the command line interface can be insecure.
done.
Testing mysqlbinlog output.. done.
Cleaning up test file(s).. done.
Mon Mar 23 01:19:22 2020 - [info] Slaves settings check done.
Mon Mar 23 01:19:22 2020 - [info]
192.168.58.139(192.168.58.139:3306) (current master)
+--192.168.58.140(192.168.58.140:3306)
+--192.168.58.141(192.168.58.141:3306)
Mon Mar 23 01:19:22 2020 - [info] Checking replication health on 192.168.58.140..
Mon Mar 23 01:19:22 2020 - [info] ok.
Mon Mar 23 01:19:22 2020 - [info] Checking replication health on 192.168.58.141..
Mon Mar 23 01:19:22 2020 - [info] ok.
Mon Mar 23 01:19:22 2020 - [info] Checking master_ip_failover_script status:
Mon Mar 23 01:19:22 2020 - [info] /usr/local/mha/master_ip_failover -network_type=ens33 --gateway=192.168.58.2 --virtual_ip=192.168.58.110 --key=2 --command=status --ssh_user=root --orig_master_host=192.168.58.139 --orig_master_ip=192.168.58.139 --orig_master_port=3306
IN SCRIPT TEST
/sbin/ifconfig ens33:2 down
/sbin/ifconfig ens33:2 192.168.58.110 up
/sbin/arping -c1 -Iens33 -s192.168.58.110 192.168.58.2
Checking the Status of the script.. OK
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.58.139 netmask 255.255.255.0 broadcast 192.168.58.255
inet6 fe80::2996:6c29:311c:45d prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:8c:c2:bc txqueuelen 1000 (Ethernet)
RX packets 10652 bytes 948242 (926.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10281 bytes 3024837 (2.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33:2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.58.110 netmask 255.255.255.0 broadcast 192.168.58.255
ether 00:0c:29:8c:c2:bc txqueuelen 1000 (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Mon Mar 23 01:19:22 2020 - [info] OK.
Mon Mar 23 01:19:22 2020 - [warning] shutdown_script is not defined.
Mon Mar 23 01:19:22 2020 - [info] Got exit code 0 (Not master dead).
MySQL Replication Health is OK.
~]# masterha_manager --conf=/etc/mha/mha.conf
Mon Mar 23 01:30:57 2020 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Mon Mar 23 01:30:57 2020 - [info] Reading application default configuration from /etc/mha/mha.conf..
Mon Mar 23 01:30:57 2020 - [info] Reading server configuration from /etc/mha/mha.conf..
3.4 安裝配置 MHA Node
~]# yum install perl-DBD-MySQL -y
~]# rpm -ivh mha4mysql-node-0.58-0.el7.centos.noarch.rpm
