脚本内容
小白一枚，如有不足，还望指点
#!/bin/bash
#
# 执行后脚本后将生成本地生成slave1.sh和slave2.sh文件
# 脚本自动将slave1.sh和slave2.sh脚本文件分别拷贝到两台从服务器上
# 需要人为去两台服务器授予lave1.sh或slave2.sh脚本文件权限并执行
#
############# master服务器配置 #########################
read -p "请输入master（主）的IP:" P2
read -p "请输入slave1的IP:" P3
read -p "请输入slave2的IP:" P4
read -p "请输入虚拟机密码:" PWC
### 因本人设置的服务器登入密码相同，因此只用了PWC一个变量#####
TMP=$(echo $P2 |awk -F'.' '{print $1,$2,$3}' |tr ' ' '.')
P5="$TMP.%"
sed -i '/server-id =/s/.*/server-id = 11/' /etc/my.cnf
sed -i '/log-slave-updates =/d' /etc/my.cnf
sed -i '/log-bin =/d' /etc/my.cnf
sed -i '/server-id =/alog-bin = master-bin\nlog-slave-updates = true' /etc/my.cnf
systemctl restart mysqld
if [ -f /opt/AMO.info ]
then
echo ""
else
mkdir -p /opt/AMO.info
fi
while true
do
read -p "请输入mysql登入密码：" PW
read -p "请再次确认：" PW2
if [[ $PW = $PW2 ]]
then
echo "密码正确"
break
else
echo "密码错误，重新输入"
fi
done
echo "mysql -uroot -p\"$PW\" -e \"grant replication slave on *.* to 'myslave'@'$P5' identified by '123456';\"" >tmp.sh
echo "mysql -uroot -p\"$PW\" -e \"grant all on *.* to 'test'@'$P5' identified by '123456';\"" >>tmp.sh
chmod +x tmp.sh
./tmp.sh
echo " \"grant replication slave on *.* to 'myslave'@'$P5' identified by '123456';\"
\"grant all on *.* to 'test'@'$P5' identified by '123456';\"
" >/opt/AMO.info/info.txt
/usr/bin/expect <<EOF
spawn mysql -uroot -p -e "flush privileges;"
expect {
"password" {
send "$PW\r"}
}
expect eof
EOF
mysql -uroot -p"$PW" mysql -e "show master status;" >/root/bin-log.info
BLOG=$(cat /root/bin-log.info |awk 'NR==2 {print $1}')
POS=$(cat /root/bin-log.info |awk 'NR==2 {print $2}')
############# 从服务器（slave1）配置 ###################
echo -e "#!/bin/bash
sed -i '/server-id =/s/.*/server-id = 22/' /etc/my.cnf
sed -i '/relay-log =/d' /etc/my.cnf
sed -i '/relay-log-index =/d' /etc/my.cnf
sed -i '/server-id =/arelay-log = relay-log-bin' /etc/my.cnf
sed -i '/server-id =/arelay-log-index = slave-relay-bin.index' /etc/my.cnf
systemctl restart mysqld
" >/root/slave1.sh
echo "
while true
do
read -p \"请输入mysql登入密码：\" PW
read -p \"请再次确认：\" PW2
if [[ \$PW = \$PW2 ]]
then
echo \"密码正确\"
break
else
echo \"密码错误，重新输入\"
fi
done" >>/root/slave1.sh
echo "
/usr/bin/expect <<EOF
spawn mysql -uroot -p
expect {
\"password\" {
send \"\$PW\r\";exp_continue}
\".*\" {
send \"change master to master_host='$P2',master_user='myslave',master_port=3306,master_password='123456',master_log_file='$BLOG',master_log_pos=$POS;\rflush privileges;\rstart slave;\rexit\r\"}
}
expect eof
EOF
" >>/root/slave1.sh
/usr/bin/expect <<EOF
spawn scp /root/slave1.sh $P4:/root/
expect {
"(yes/no)" {
send "yes\r";exp_continue}
"password" {
send "$PWC\r"}
}
expect eof
EOF
############# 从服务器（slave2）配置 ###################
echo -e "#!/bin/bash
sed -i '/server-id =/s/.*/server-id = 33/' /etc/my.cnf
sed -i '/relay-log =/d' /etc/my.cnf
sed -i '/relay-log-index =/d' /etc/my.cnf
sed -i '/server-id =/arelay-log = relay-log-bin' /etc/my.cnf
sed -i '/server-id =/arelay-log-index = slave-relay-bin.index' /etc/my.cnf
systemctl restart mysqld
" >/root/slave2.sh
echo "
while true
do
read -p \"请输入mysql登入密码：\" PW
read -p \"请再次确认：\" PW2
if [[ \$PW = \$PW2 ]]
then
echo \"密码正确\"
break
else
echo \"密码错误，重新输入\"
fi
done" >>/root/slave2.sh
echo "
/usr/bin/expect <<EOF
spawn mysql -uroot -p
expect {
\"password\" {
send \"\$PW\r\";exp_continue}
\".*\" {
send \"change master to master_host='$P2',master_user='myslave',master_port=3306,master_password='123456',master_log_file='$BLOG',master_log_pos=$POS;\rflush privileges;\rstart slave;\rexit\r\"}
}
expect eof
EOF
" >>/root/slave2.sh
/usr/bin/expect <<EOF
spawn scp /root/slave2.sh $P4:/root/
expect {
"(yes/no)" {
send "yes\r";exp_continue}
"password" {
send "$PWC\r"}
}
expect eof
EOF
执行演示
在master上执行脚本
[root@localhost ~]# ./master.sh
请输入master（主）的IP:192.168.10.10
请输入slave1的IP:192.168.10.20
请输入slave2的IP:192.168.10.30
请输入虚拟机密码:
请输入mysql登入密码：
请再次确认：
密码正确
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
spawn mysql -uroot -p -e flush privileges;
Enter password:
mysql: [Warning] Using a password on the command line interface can be insecure.
spawn scp /root/slave1.sh 192.168.10.20:/root/
root@192.168.10.20's password:
Permission denied, please try again.
root@192.168.10.20's password:
Permission denied, please try again.
root@192.168.10.20's password:
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
lost connection
yes
expect: spawn id exp6 not open
while executing
"expect eof"
spawn scp /root/slave1.sh 192.168.10.20:/root/
root@192.168.10.20's password:
slave1.sh 100% 844 413.4KB/s 00:00
spawn scp /root/slave2.sh 192.168.10.30:/root/
The authenticity of host '192.168.10.30 (192.168.10.30)' can't be established.
ECDSA key fingerprint is SHA256:rXRxYO+vtdxxbnLayaaDBs9nP/y3x5v98yi6wjvP1zE.
ECDSA key fingerprint is MD5:25:34:10:b8:54:07:87:eb:0b:1f:c0:4f:27:f0:13:27.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.10.30' (ECDSA) to the list of known hosts.
yes
root@192.168.10.30's password:
Permission denied, please try again.
root@192.168.10.30's password:
Permission denied, please try again.
root@192.168.10.30's password:
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
lost connection
yes
expect: spawn id exp6 not open
while executing
"expect eof"
spawn scp /root/slave2.sh 192.168.10.30:/root/
root@192.168.10.30's password:
slave2.sh 100% 844 449.7KB/s 00:00
切换到slave1从服务器
执行脚本slave1.sh
[root@localhost ~]# ls #在本地查看，生成了slave1.sh脚本文件
……
slave1.sh
[root@localhost ~]# chmod +x slave1.sh #授予执行权限
[root@localhost ~]# ./slave1.sh ##执行脚本
请输入mysql登入密码： ******
请再次确认： ******
密码正确
spawn mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
change master to master_host='192.168.10.10',master_user='myslave',master_port=3306,master_password='123456',master_log_file='master-bin.000001',master_log_pos=894;
flush privileges;
start slave;
exit
Your MySQL connection id is 3
Server version: 5.7.20 Source distribution
Copyright (c) 2000, 2017, 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> change master to master_host='192.168.10.10',master_user='myslave',master_port=3306,master_password='123456',master_log_file='master-bin.000001',master_log_pos=894;
Query OK, 0 rows affected, 2 warnings (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
查看验证slave1
[root@localhost ~]# mysql -u root -p ##登入数据库
mysql> show slave status\G; ##查看slave状态，I/O线程和SQL线程正常，执行成功
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.10
Master_User: myslave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000001
Read_Master_Log_Pos: 894
Relay_Log_File: relay-log-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: master-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
切换到slave2从服务器
执行脚本slave2.sh
[root@localhost ~]# ls #在本地查看，生成了slave2.sh脚本文件
……
slave2.sh
[root@localhost ~]# chmod +x slave2.sh #授予执行权限
[root@localhost ~]# ./slave2.sh ##执行脚本
请输入mysql登入密码： ******
请再次确认： ******
密码正确
spawn mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
change master to master_host='192.168.10.10',master_user='myslave',master_port=3306,master_password='123456',master_log_file='master-bin.000001',master_log_pos=894;
flush privileges;
start slave;
exit
Your MySQL connection id is 3
Server version: 5.7.20 Source distribution
Copyright (c) 2000, 2017, 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> change master to master_host='192.168.10.10',master_user='myslave',master_port=3306,master_password='123456',master_log_file='master-bin.000001',master_log_pos=894;
Query OK, 0 rows affected, 2 warnings (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
查看验证slave2
[root@localhost ~]# mysql -u root -p ##登入数据库
mysql> show slave status\G' ## 查看状态，两个线程工作正常
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.10
Master_User: myslave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000001
Read_Master_Log_Pos: 894
Relay_Log_File: relay-log-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: master-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: