数据库|mysql教程
Mysql ，GTID，Mha
数据库-mysql教程
下面小编就为大家带来一篇Mysql GTID Mha配置方法。小编觉的挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧
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Gtid + Mha +Binlog server配置：
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1：测试环境
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OS：CentOS 6.5
Mysql：5.6.28
Mha：0.56
192.168.1.21 mysql1 M1
192.168.1.22 mysql2 S1
192.168.1.23 mysql3 S2 Mha manage、Binlog server
2：配置/etc/f相关参数,在3各节点中分别配置
binlog-format=ROW log-slave-updates=true gtid-mode=on enforce-gtid-consistency=true master-info-repository=TABLE relay-log-info-repository=TABLE sync-master-info=1 slave-parallel-workers=2 binlog-checksum=CRC32 master-verify-checksum=1 slave-sql-verify-checksum=1 binlog-rows-query-log_events=1
设置root密码，创建复制用户：
mysql> use mysql;mysql> GRANT ALL PRIVILEGES ON *.* TO root@"%" IDENTIFIED BY "oracle123";mysql> update user set Password = password(oracle123) where User= oot;mysql> flush privileges;mysql> GRANT replication slave ON *.* TO epl@\% identified by oracle; mysql> flush privileges;
3：在mysql2、mysql3配置Gtid复制
CHANGE MASTER TO MASTER_HOST = 192.168.1.21,MASTER_PORT = 3306,MASTER_USER = epl,MASTER_PASSWORD = oracle,MASTER_AUTO_POSITION = 1;start slave;mysql> show slave status\G*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.1.21 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003Read_Master_Log_Pos: 524 Relay_Log_File: mysql-relay-bin.000002 Relay_Log_Pos: 734 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: YesSlave_SQL_Running: Yes Replicate_Do_DB: ...... Master_SSL_Crlpath: Retrieved_Gtid_Set: 9ee7c7af-cbf3-11e5-bf75-000c2923e459:1-2Executed_Gtid_Set: 9ee7c7af-cbf3-11e5-bf75-000c2923e459:1-2 Auto_Position: 11 row in set (0.00 sec)
4：安装Mha
rpm -Uvh epel-release-6-8.noarch.rpm
配置SSH等效：
在所有节点都执行
ssh-keygen -t rsassh-copy-id -i /root/.ssh/id_rsa.pub root@mysql1ssh-copy-id -i /root/.ssh/id_rsa.pub root@mysql2ssh-copy-id -i /root/.ssh/id_rsa.pub root@mysql3
测试ssh登录，在3各节点分别测试：
ssh myqsl1ssh myqsl2ssh myqsl3
binlog server配置：在mysql3
mkdir -p /mysql/backup/binlog/usr/local/mysql/bin/mysqlbinlog -R --raw --host=192.168.1.20 --user= oot --password=oracle123 --stop-never mysql-bin.000003 &
最后那个binlog文件时给定从那个binlog文件开始。另外需要注意，当mysql1上的mysql进程退出后，binlog server也会退出。
需要安装一些包做支持，使用yum网络源；如安装遇到问题可以尝试yum update更新yum源或yum clean all清除缓存
在每个节点安装 mha4mysql-node
yum -y install perl-DBD-MySQL ncftp
rpm -Uvh mha4mysql-node-0.56-0.el6.noarch.rpm
在mysql3上安装mha-manager
yum install perlyum install cpanyum install perl-Config-Tinyyum install perl-Time-HiRes yum install perl-Log-Dispatchyum install perl-Parallel-ForkManager
如果安装perl-Log-Dispatch，perl-Parallel-ForkManager安装包报错：
需要先安装epel
rpm -Uvh mha4mysql-manager-0.56-0.el6.noarch.rpm
5：配置Mha,在mysql3
mkdir -p /etc/masterha/app1vi /etc/masterha/f[server default]user=root password=oracle123manager_workdir=/etc/masterha/app1manager_log=/etc/masterha/app1/manager.logremote_workdir=/etc/masterha/app1ssh_user=rootrepl_user=repluserrepl_password=oracleping_interval=3master_ip_failover_script=/etc/masterha/app1/master_ip_failover[server1]hostname=192.168.1.21#ssh_port=9999master_binlog_dir=/mysql/logscheck_repl_delay=0 #防止master故障时候，切换时slave有延迟，可在那里切不过来candidate_master=1[server2]hostname=192.168.1.22#ssh_port=9999master_binlog_dir=/mysql/logscandidate_master=1[server3]hostname=192.168.1.23#ssh_port=9999master_binlog_dir=/mysql/logsno_master=1ignore_fail=1 #如果这个节点挂了，mha将不可用，加上这个参数slave挂了一样可以用[binlog1] #binlog server需要mysqlbinlog命令hostname=192.168.1.23master_binlog_dir=/mysql/backup/binlog #读取binlog存放位置ignore_fail=1no_master=1vi /etc/masterha/app1/master_ip_failover#!/usr/bin/env perluse strict;use warnings FATAL => all;use Getopt::Long;my ($command, $ssh_user, $orig_master_host, $orig_master_ip,$orig_master_port, $new_master_host, $new_master_ip, $new_master_port);my $vip = 192.168.1.20;#Virtual IPmy $gateway = 192.168.1.1;#Gateway IPmy $interface = eth0;my $key = "1";my $ssh_start_vip = "/sbin/ifconfig $interface:$key $vip;/sbin/arping -I $interface -c 3 -s $vip $gateway >/dev/null 2>&1";my $ssh_stop_vip = "/sbin/ifconfig $interface:$key down";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, ew_master_host=s => \$new_master_host, ew_master_ip=s => \$new_master_ip, ew_master_port=i => \$new_master_port,);exit &main();sub main {print "\n\nIN script TEST====$ssh_stop_vip==$ssh_start_vip===\n\n";if ( $command eq "stop" || $command eq "stopssh" ) {# $orig_master_host, $orig_master_ip, $orig_master_port are passed.# If you manage master ip address at global catalog database,# invalidate orig_master_ip here.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" ) {# all arguments are passed.# If you manage master ip address at global catalog database,# activate new_master_ip here.# You can also grant write access (create user, set read_only=0, etc) here.my $exit_code = 10;eval {print "Enabling the VIP - $vip on the new master - $new_master_host \n";&start_vip();$exit_code = 0;};if ($@) {warn $@;exit $exit_code;}exit $exit_code;}elsif ( $command eq "status" ) {print "Checking the Status of the script.. OK \n";`ssh $ssh_user\@$orig_master_host \" $ssh_start_vip \"`;exit 0;}else {&usage();exit 1;}}# A simple system call that enable the VIP on the new mastersub start_vip() {`ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;}# A simple system call that disable the VIP on the old_mastersub stop_vip() {`ssh $ssh_user\@$orig_master_host \" $ssh_stop_vip \"`;}sub usage {print"Usage: master_ip_failover --command=start|stop|stopssh|status --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 777 /etc/masterha/app1/
配置文件测试：
# masterha_check_ssh --conf=/etc/masterha/fThu May 26 23:25:35 - [warning] Global configuration file /etc/f not found. Skipping.Thu May 26 23:25:35 - [info] Reading application default configuration from /etc/masterha/f..Thu May 26 23:25:35 - [info] Reading server configuration from /etc/masterha/f..Thu May 26 23:25:35 - [info] Starting SSH connection tests..Thu May 26 23:25:35 - [debug] Thu May 26 23:25:35 - [debug] Connecting via SSH from root@192.168.1.21(192.168.1.21:22) to root@192.168.1.22(192.168.1.22:22)..Thu May 26 23:25:35 - [debug] ok.Thu May 26 23:25:35 - [debug] Connecting via SSH from root@192.168.1.21(192.168.1.21:22) to root@192.168.1.23(192.168.1.23:22)..Thu May 26 23:25:35 - [debug] ok.Thu May 26 23:25:36 - [debug] Thu May 26 23:25:35 - [debug] Connecting via SSH from root@192.168.1.22(192.168.1.22:22) to root@192.168.1.21(192.168.1.21:22)..Thu May 26 23:25:35 - [debug] ok.Thu May 26 23:25:35 - [debug] Connecting via SSH from root@192.168.1.22(192.168.1.22:22) to root@192.168.1.23(192.168.1.23:22)..Thu May 26 23:25:36 - [debug] ok.Thu May 26 23:25:36 - [debug] Thu May 26 23:25:36 - [debug] Connecting via SSH from root@192.168.1.23(192.168.1.23:22) to root@192.168.1.21(192.168.1.21:22)..Thu May 26 23:25:36 - [debug] ok.Thu May 26 23:25:36 - [debug] Connecting via SSH from root@192.168.1.23(192.168.1.23:22) to root@192.168.1.22(192.168.1.22:22)..Thu May 26 23:25:36 - [debug] ok.Thu May 26 23:25:36 - [info] All SSH connection tests passed successfully.#masterha_check_repl --conf=/etc/masterha/fThu May 26 22:52:30 - [warning] Global configuration file /etc/f not found. Skipping.Thu May 26 22:52:30 - [info] Reading application default configuration from /etc/masterha/f..Thu May 26 22:52:30 - [info] Reading server configuration from /etc/masterha/f..Thu May 26 22:52:30 - [info] MHA::MasterMonitor version 0.56.Thu May 26 22:52:31 - [info] GTID failover mode = 1Thu May 26 22:52:31 - [info] Dead Servers:Thu May 26 22:52:31 - [info] Alive Servers:Thu May 26 22:52:31 - [info] 192.168.1.21(192.168.1.21:3306)Thu May 26 22:52:31 - [info] 192.168.1.22(192.168.1.22:3306)Thu May 26 22:52:31 - [info] 192.168.1.23(192.168.1.23:3306)Thu May 26 22:52:31 - [info] Alive Slaves:Thu May 26 22:52:31 - [info] 192.168.1.22(192.168.1.22:3306) Version=5.6.28-log (oldest major version between slaves) log-bin:enabledThu May 26 22:52:31 - [info] GTID ONThu May 26 22:52:31 - [info] Replicating from 192.168.1.21(192.168.1.21:3306)Thu May 26 22:52:31 - [info] Primary candidate for the new Master (candidate_master is set)Thu May 26 22:52:31 - [info] 192.168.1.23(192.168.1.23:3306) Version=5.6.28-log (oldest major version between slaves) log-bin:enabledThu May 26 22:52:31 - [info] GTID ONThu May 26 22:52:31 - [info] Replicating from 192.168.1.21(192.168.1.21:3306)Thu May 26 22:52:31 - [info] Not candidate for the new Master (no_master is set)Thu May 26 22:52:31 - [info] Current Alive Master: 192.168.1.21(192.168.1.21:3306)Thu May 26 22:52:31 - [info] Checking slave configurations..Thu May 26 22:52:31 - [info] read_only=1 is not set on slave 192.168.1.22(192.168.1.22:3306).Thu May 26 22:52:31 - [info] read_only=1 is not set on slave 192.168.1.23(192.168.1.23:3306).Thu May 26 22:52:31 - [info] Checking replication filtering settings..Thu May 26 22:52:31 - [info] binlog_do_db= , binlog_ignore_db= Thu May 26 22:52:31 - [info] Replication filtering check ok.Thu May 26 22:52:31 - [info] GTID (with auto-pos) is supported. Skipping all SSH and Node package checking.Thu May 26 22:52:31 - [info] HealthCheck: SSH to 192.168.1.23 is reachable.Thu May 26 22:52:31 - [info] Binlog server 192.168.1.23 is reachable.Thu May 26 22:52:31 - [info] Checking recovery script configurations on 192.168.1.23(192.168.1.23:3306)..Thu May 26 22:52:31 - [info] Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/mysql/backup/binlog --output_file=/etc/masterha/app1/save_binary_logs_test --manager_version=0.56 --start_file=mysql-bin.000004 Thu May 26 22:52:31 - [info] Connecting to root@192.168.1.23(192.168.1.23:22).. Creating /etc/masterha/app1 if not exists.. ok. Checking output directory is accessible or not.. ok.Binlog found at /mysql/backup/binlog, up to mysql-bin.000004Thu May 26 22:52:31 - [info] Binlog setting check done.Thu May 26 22:52:31 - [info] Checking SSH publickey authentication settings on the current master..Thu May 26 22:52:31 - [info] HealthCheck: SSH to 192.168.1.21 is reachable.Thu May 26 22:52:31 - [info] 192.168.1.21(192.168.1.21:3306) (current master) +--192.168.1.22(192.168.1.22:3306) +--192.168.1.23(192.168.1.23:3306)Thu May 26 22:52:31 - [info] Checking replication health on 192.168.1.22..Thu May 26 22:52:31 - [info] ok.Thu May 26 22:52:31 - [info] Checking replication health on 192.168.1.23..Thu May 26 22:52:31 - [info] ok.Thu May 26 22:52:31 - [info] Checking master_ip_failover_script status:Thu May 26 22:52:31 - [info] /etc/masterha/app1/master_ip_failover --command=status --ssh_user=root --orig_master_host=192.168.1.21 --orig_master_ip=192.168.1.21 --orig_master_port=3306 IN script TEST====/sbin/ifconfig eth1:1 down==/sbin/ifconfig eth1:1 192.168.1.20;/sbin/arping -I eth1 -c 3 -s 192.168.1.20 192.168.1.1 >/dev/null 2>&1===Checking the Status of the script.. OK Thu May 26 22:52:34 - [info] OK.Thu May 26 22:52:34 - [warning] shutdown_script is not defined.Thu May 26 22:52:34 - [info] Got exit code 0 (Not master dead).MySQL Replication Health is OK.
MHA启动及关闭
nohup masterha_manager –conf=/etc/masterha/f > /etc/masterha/app1/manager.log &1 &
检查是否启动：
masterha_check_status --conf=/etc/masterha/fapp1 (pid:11447) is running(0:PING_OK), master:192.168.1.21
停止Mha：
masterha_stop --conf=/etc/masterha/fStopped app1 successfully.[3]+ Exit 1 nohup masterha_manager --conf=/etc/masterha/f > /etc/masterha/app1/manager.log &1
测试：
说明，每次测试完成后，需要清理/etc/masterha/app1下的日志，然后启动Mha manager.
1：关闭mysql1上的mysql，查看从库从那里同步，以及mha日志输出
2：恢复mysql1为mysql2的slave，change master语句可以在/etc/masterha/app1/manager.log里找到。
在配置GTID复制时候遇到 1032错误，用以下方法解决
mysql> show global variables like \%gtid%;+---------------------------------+------------------------------------------------------------------------------------+| Variable_name| Value |+---------------------------------+------------------------------------------------------------------------------------+| binlog_gtid_simple_recovery | OFF || enforce_gtid_consistency | ON || gtid_executed| 88b05570-2599-11e6-880a-000c29c18cf5:1-3,9ee7c7af-cbf3-11e5-bf75-000c2923e459:1-4 || gtid_mode | ON || gtid_owned ||| gtid_purged ||| simplified_binlog_gtid_recovery | OFF |+---------------------------------+------------------------------------------------------------------------------------+stop slave;set gtid_next=9ee7c7af-cbf3-11e5-bf75-000c2923e459:4;begin;commit;set gtid_next=automatic;start slave;show slave status\G;
