쉘 프로그래밍 - 활용

쉘 스크립트로 레디스 7대 센티넬 구성으로 세팅.

Role	Hostname	IP
Master	master	192.168.52.157
Slave	slave	192.168.52.158
	slave	192.168.52.159
	slave	192.168.52.160
Sentinel	sentinel	192.168.52.161
	sentinel	192.168.52.162
	sentinel	192.168.52.163

sshpass 설치

yum install -y sshpass

레디스 설치

vi commands.sh
#!/bin/bash

# 패키지 설치 및 방화벽 및 SELinux 설정
yum install -y redis & wait
systemctl stop firewalld
setenforce 0

master 설정

vi master.sh
#!/bin/bash

# 마스터 서버 설정
sed -i 's/bind 127.0.0.1/bind 0.0.0.0/g' /etc/redis.conf
sed -i 's/daemonize no/daemonize yes/g' /etc/redis.conf
sed -i 's/# min-replicas-to-write 3/min-replicas-to-write 1/g' /etc/redis.conf
sed -i 's/# min-replicas-max-lag 10/min-replicas-max-lag 10/g' /etc/redis.conf
sed -i 's/# requirepass foobared/requirepass qwer1234/g' /etc/redis.conf

systemctl restart redis

슬레이브 설정

vi slave.sh
#!/bin/bash

# 슬레이브 서버 설정
sed -i 's/bind 127.0.0.1/bind 0.0.0.0/g' /etc/redis.conf
sed -i 's/daemonize no/daemonize yes/g' /etc/redis.conf
sed -i 's/# replicaof <masterip> <masterport>/replicaof 192.168.52.157 6379/g' /etc/redis.conf
sed -i 's/# masterauth <master-password>/masterauth qwer1234/g' /etc/redis.conf
sed -i 's/# requirepass foobared/requirepass qwer1234/g' /etc/redis.conf

systemctl restart redis

센티널 설정

vi sentinel.sh
#!/bin/bash

# 센티넬 서버 설정
sed -i 's/# bind 127.0.0.1 192.168.1.1/bind 0.0.0.0/g' /etc/redis-sentinel.conf
sed -i 's/daemonize no/daemonize yes/g' /etc/redis-sentinel.conf
sed -i 's/sentinel monitor mymaster 127.0.0.1 6379 2/sentinel monitor mymaster 192.168.52.157 6379 2/g' /etc/redis-sentinel.conf
sed -i 's/# sentinel auth-pass <master-name> <password>/sentinel auth-pass mymaster qwer1234/g' /etc/redis-sentinel.conf

systemctl restart redis-sentinel

센티널 구성

vi config_sentinel.sh
#!/bin/bash

# 서버 IP 및 역할 설정
servers="
192.168.52.157:master
192.168.52.158:slave
192.168.52.159:slave
192.168.52.160:slave
192.168.52.161:sentinel
192.168.52.162:sentinel
192.168.52.163:sentinel
"

# 서버별 설정 적용
for server in $servers
do
        server_ip=`echo $server | cut -d":" -f 1`
        server_role=`echo $server | cut -d":" -f 2`
        echo $server_ip
        echo $server_role

        # commands.sh 파일 전송
        sshpass -p 'qwer1234' scp -o StrictHostKeyChecking=no commands.sh root@$server_ip:/root/commands.sh

        # commands.sh 실행
        sshpass -p 'qwer1234' ssh -t -o StrictHostKeyChecking=no root@$server_ip "bash /root/commands.sh"

        if [ $server_role = "master" ]
        then
                echo "config master"
                sshpass -p 'qwer1234' ssh -t -o StrictHostKeyChecking=no root@$server_ip < master.sh
        elif [ $server_role = "slave" ]
        then
                echo "config slave"
                sshpass -p 'qwer1234' ssh -t -o StrictHostKeyChecking=no root@$server_ip < slave.sh
        elif [ $server_role = "sentinel" ]
        then
                echo "config sentinel"
                sshpass -p 'qwer1234' ssh -t -o StrictHostKeyChecking=no root@$server_ip < sentinel.sh
        fi
done

---

확인

master에서 바뀐 거 확인

vi /etc/redis.conf

redis-cli
auth qwer1234
info Replication

마스터에서 slave3대가 연결돼 있는 것을 확인할 수 있다

sentinel에서도 확인

redis-cli -p 26379
sentinel master mymaster
sentinel slaves mymaster

마스터확인

슬레이브 확인