mysql 架构安装部署及操作

目录

搭建流程

1、安装mysql5726

实现
功能		 10.0.0.65 10.0.0.66 10.0.0.67
name 65 66 67
host 10.0.0.65 65
10.0.0.66 66
10.0.0.67 67		 10.0.0.65 65
10.0.0.66 66
10.0.0.67 67		 10.0.0.65 65
10.0.0.66 66
10.0.0.67 67
gtid复制 主库 从库 从库
高可用 vip - mha
邮箱报警 读写分离 -

656667

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum install -y libaio-devel
mkdir -p /server/tools
cd /server/tools/
mkdir /application
# wget http://mirrors.163.com/mysql/Downloads/MySQL-5.7/mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz
tar xf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz 
mv mysql-5.7.26-linux-glibc2.12-x86_64  /application/mysql
yum remove mariadb-libs-5.5.60-1.el7_5.x86_64 -y
rpm -qa |grep mariadb
useradd -s /sbin/nologin mysql
#设置环境变量
echo "export PATH=/application/mysql/bin:$PATH" >>/etc/profile
source /etc/profile
mysql -V
#创建数据路径并授权
#1. 添加一块新磁盘模拟数据盘
#2. 格式化并挂载磁盘
# mkfs.xfs /dev/sdb
# mkdir /data
# blkid
# vim /etc/fstab 
# UUID="b21ec3e0-e251-4ded-bc12-2d940f938dd5" /data xfs defaults 0 0
# mount -a
# df -h
chown -R mysql.mysql /application/*
#初始化数据（创建系统数据）
# 5.6 版本 初始化命令  /application/mysql/scripts/mysql_install_db 
# 5.7 版本
mkdir /data/mysql/data -p 
chown -R mysql.mysql /data
mysqld --initialize --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data  #自动创建密码
mysqld --initialize-insecure --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data   #无密码

cat >/etc/systemd/system/mysqld.service <<EOF
[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/application/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000
EOF

mkdir /data/mysql/data/binlog
chown -R mysql.mysql /data

65

cat > /etc/my.cnf <<EOF
[mysqld]
basedir=/application/mysql/
datadir=/data/mysql/data
socket=/tmp/mysql.sock
server_id=65
port=3306
secure-file-priv=/tmp
autocommit=0
log_bin=/data/mysql/data/binlog/mysql-bin
binlog_format=row
gtid-mode=on
enforce-gtid-consistency=true
log-slave-updates=1
[mysql]
prompt=65 [\d]>
EOF
systemctl restart mysqld
systemctl status mysqld

66

cat > /etc/my.cnf <<EOF
[mysqld]
basedir=/application/mysql
datadir=/data/mysql/data
socket=/tmp/mysql.sock
server_id=66
port=3306
secure-file-priv=/tmp
autocommit=0
log_bin=/data/mysql/data/binlog/mysql-bin
binlog_format=row
gtid-mode=on
enforce-gtid-consistency=true
log-slave-updates=1
[mysql]
prompt=66 [\d]>
EOF
systemctl restart mysqld
systemctl status mysqld

67

cat > /etc/my.cnf <<EOF
[mysqld]
basedir=/application/mysql
datadir=/data/mysql/data
socket=/tmp/mysql.sock
server_id=67
port=3306
secure-file-priv=/tmp
autocommit=0
log_bin=/data/mysql/data/binlog/mysql-bin
binlog_format=row
gtid-mode=on
enforce-gtid-consistency=true
log-slave-updates=1
[mysql]
prompt=67 [\d]>
EOF
systemctl restart mysqld
systemctl status mysqld

gtid主从复制

65

mysql -e "grant replication slave on *.* to repl@'10.0.0.%' identified by '123';"

6667

mysql -e "change master to master_host='10.0.0.65',master_user='repl',master_password='123' ,MASTER_AUTO_POSITION=1;start slave; "
mysql -e "show slave status G"|grep Yes

高可用

656667

ln -s /application/mysql/bin/mysqlbinlog    /usr/bin/mysqlbinlog
ln -s /application/mysql/bin/mysql          /usr/bin/mysql

65

rm -rf /root/.ssh 
/bin/ssh-keygen -t rsa -f /root/.ssh/id_rsa  -P ""
sshpass -p123456 ssh-copy-id -i ~/.ssh/id_rsa.pub 10.0.0.66 -o StrictHostKeyChecking=no
sshpass -p123456 ssh-copy-id -i ~/.ssh/id_rsa.pub 10.0.0.67 -o StrictHostKeyChecking=no
mysql -e "grant all privileges on *.* to mha@'10.0.0.%' identified by 'mha';"

656667

ssh 10.0.0.65 date
ssh 10.0.0.66 date
ssh 10.0.0.67 date
yum install perl-DBD-MySQL -y
rpm -ivh mha4mysql-node-0.56-0.el6.noarch.rpm

67

yum install -y perl-Config-Tiny epel-release perl-Log-Dispatch perl-Parallel-ForkManager perl-Time-HiRes
rpm -ivh mha4mysql-manager-0.56-0.el6.noarch.rpm

#创建配置文件目录
 mkdir -p /etc/mha
#创建日志目录
 mkdir -p /var/log/mha/app1
#编辑mha配置文件
cat > /etc/mha/app1.cnf<<EOF
[server default]
manager_log=/var/log/mha/app1/manager        
manager_workdir=/var/log/mha/app1            
master_binlog_dir=/data/mysql/data/binlog       
user=mha                                   
password=mha                               
ping_interval=2
repl_password=123
repl_user=repl
ssh_user=root                               
[server1]                                   
hostname=10.0.0.65
port=3306                                  
[server2]            
hostname=10.0.0.66
port=3306
[server3]
hostname=10.0.0.67
port=3306
EOF
masterha_check_ssh  --conf=/etc/mha/app1.cnf 
masterha_check_repl  --conf=/etc/mha/app1.cnf 
#开启MHA(db03)：
nohup masterha_manager --conf=/etc/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover  < /dev/null> /var/log/mha/app1/manager.log 2>&1 &
#查看MHA状态
masterha_check_status --conf=/etc/mha/app1.cnf

mha的VIP功能

67

cd /usr/local/bin/
rz master_ip_failover
dos2unix /usr/local/bin/master_ip_failover 
chmod +x /usr/local/bin/master_ip_failover 
vim  /usr/local/bin/master_ip_failover
my $vip = '10.0.0.55/24';
my $key = '1';
my $ssh_start_vip = "/sbin/ifconfig eth0:$key $vip";
my $ssh_stop_vip = "/sbin/ifconfig eth0:$key down";
# 
vim /etc/mha/app1.cnf
添加：
master_ip_failover_script=/usr/local/bin/master_ip_failover

65

ifconfig eth0:1 10.0.0.55/24

67

masterha_stop --conf=/etc/mha/app1.cnf
nohup masterha_manager --conf=/etc/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/app1/manager.log 2>&1 &

邮件报警

67

cd /usr/local/bin/
rz send  sendEmail  testpl
vim testpl  #修改报警邮箱
vim /etc/mha/app1.cnf
# 添加一行
report_script=/usr/local/bin/send
#重启mha
masterha_stop --conf=/etc/mha/app1.cnf
nohup masterha_manager --conf=/etc/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/app1/manager.log 2>&1 &

2.读写分离

主库

yum install -y Atlas*
cd /usr/local/mysql-proxy/conf
mv test.cnf test.cnf.bak
 vi test.cnf
[mysql-proxy]
admin-username = user
admin-password = pwd
proxy-backend-addresses = 10.0.0.55:3306
proxy-read-only-backend-addresses = 10.0.0.66:3306,10.0.0.67:3306
pwds = repl:3yb5jEku5h4=,mha:O2jBXONX098=
daemon = true
keepalive = true
event-threads = 8
log-level = message
log-path = /usr/local/mysql-proxy/log
sql-log=ON
proxy-address = 0.0.0.0:33060
admin-address = 0.0.0.0:2345
charset=utf8
# 启动atlas
    /usr/local/mysql-proxy/bin/mysql-proxyd test start
    ps -ef |grep proxy
# 3. Atlas功能测试
# 测试读操作：
mysql -umha -pmha  -h 10.0.0.55 -P 33060
66 [(none)]>select @@server_id;
+-------------+
| @@server_id |
+-------------+
|          67 |
+-------------+
1 row in set (0.00 sec)

66 [(none)]>select @@server_id;
+-------------+
| @@server_id |
+-------------+
|          65 |
+-------------+
1 row in set (0.00 sec)
# 测试写操作：
66 [(none)]>begin;select @@server_id;commit;
Query OK, 0 rows affected (0.00 sec)

+-------------+
| @@server_id |
+-------------+
|          66 |
+-------------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

66 [(none)]>begin;select @@server_id;commit;
Query OK, 0 rows affected (0.00 sec)

+-------------+
| @@server_id |
+-------------+
|          66 |
+-------------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

测试ip漂移

查看vip
[root@65 /server/tools]# ip a |grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet 10.0.0.65/24 brd 10.0.0.255 scope global noprefixroute eth0
    inet 10.0.0.55/24 brd 10.0.0.255 scope global secondary eth0:1


#登录66

mysql -e "show slave statusG"
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.0.0.65                    //主库是51
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000007
          Read_Master_Log_Pos: 191
               Relay_Log_File: mysql-db02-relay-bin.000002
                Relay_Log_Pos: 361
        Relay_Master_Log_File: mysql-bin.000007
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
            
#停掉主库 65
 systemctl stop mysqld                 //停掉主库Mysql测试
# 切换到从库67上查看
mysql -e "show slave statusG"
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.0.0.66                   //主库切换到52
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000006
          Read_Master_Log_Pos: 191
               Relay_Log_File: mysql-db03-relay-bin.000002
                Relay_Log_Pos: 361
        Relay_Master_Log_File: mysql-bin.000006
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
            
#在65上查看vip信息
 ip a |grep eth0     //vip没有了
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet 10.0.0.65/24 brd 10.0.0.255 scope global noprefixroute eth0

#在66上查看vip信息
[root@mysql-db02 ~]# ip a |grep eth0    //db02出现vip55
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    inet 10.0.0.52/24 brd 10.0.0.255 scope global eth0
    inet 10.0.0.55/24 brd 10.0.0.255 scope global secondary eth0:0
# VIP漂移测试成功

nohup masterha_manager --conf=/etc/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover < /dev/null > /var/log/mha/app1/manager.log 2>&1 & 
//后台运行mha


masterha_check_repl --conf=/etc/mha/app1.cnf                         //测试mha复制
MySQL Replication Health is OK
[root@db03 mha]# masterha_check_status --conf=/etc/mha/app1.cnf       //检测mha状态，db03查看主库是否切换66
app1 (pid:9849) is running(0:PING_OK), master:10.0.0.66
# mha工作正常
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原文地址：https://www.cnblogs.com/jiangyatao/p/11371462.html