redis 三主六从高可用docker(不固定ip)
redis集群(cluster)笔记
redis 三主三从高可用集群docker swarm
redis 三主六从高可用docker(不固定ip)
此博客解决，redis加入集群后，是用于停掉后重启，将nodes.conf中的旧的Ip替换为新的IP，从而达到不会因为IP变化导致集群无法正常使用
跨主机安装rediscluster集群，本文采用swarm的方式，使用同一个网络，然后分别在对应的机器启动
1.环境准备
- docker
- docker-compose
- swarm集群
- 安装文件
1.1 swarm环境安装
| 主机 | IP |
|---|---|
| node1 | 192.168.56.100 |
| node2 | 192.168.56.101 |
| node3 | 192.168.56.102 |
在三台分别执行 开放防火墙：
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.100" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.101" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.102" accept"
firewall-cmd --reload
firewall-cmd --list-all
systemctl restart docker
1.2 在3台主机上配置swarm
- 在node1上执行：
docker swarm init --advertise-addr 192.168.56.100
docker swarm join-token manager
返回类似以下内容：
docker swarm join --token SWMTKN-1-614xi9dvksycykobgifxb4pgopc1wwgczwqct5wqkq8zao6tmx-0ds4jj3ozclrr2wukcaoakxso 192.168.56.100:2377
- 在node2、node3上执行上面的返回结果：
docker swarm join --token SWMTKN-1-2c2xopn2rld8oltcof24sue370681ijhbo3bwcqarjlhq9lkea-2g53o5qn2anre4j9puv4hecrn 192.168.0.101:2377
1.3 创建swarm网络
在node1上执行以下命令：
docker network create -d overlay --attachable redis-net
1.4 查看node
docker node ls
2.安装文件准备
2.1 redisnode1文件
filePath="/home/redis/redisnode1"
mkdir -p $filePath
cd $filePath
cat > ${filePath}/docker-compose.yml << EOF
version: '3'
networks:
redis-net:
external: true
services:
redis1:
image: redis:6.0-alpine
hostname: redis1
container_name: redis1
volumes:
- "\$PWD/redis1/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
redis2:
image: redis:6.0-alpine
hostname: redis2
container_name: redis2
volumes:
- "\$PWD/redis2/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
redis3:
image: redis:6.0-alpine
hostname: redis3
container_name: redis3
volumes:
- "\$PWD/redis3/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
EOF
cat > ${filePath}/redis.conf << EOF
port 6379
masterauth '123456'
requirepass '123456'
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF
cat > ${filePath}/redisStart.sh << EOF
#!/bin/sh
CURRENT_DIR=\$(
cd "\$(dirname "\$0")"
pwd
)
nowDate=\$(date "+%Y%m%d%H%M%S")
logFileName="redisStart_"\$nowDate.log
touch \$CURRENT_DIR/\${logFileName}
# 日志函数
log(){
echo "["\$(date "+%Y-%m-%d %H:%M:%S")"]"$1 | tee -a \$CURRENT_DIR/\$logFileName
}
# 通过ifconfig命令获取IP地址
IP=\$(ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{print \$1}')
log "Container IP Address is: \${IP}"
CLUSTER_CONFIG="/data/nodes.conf"
if [ -f \${CLUSTER_CONFIG} ]; then
if [ -z "\${IP}" ]; then
log "Unable to determine IP address!"
exit 1
fi
log "Updating my IP to \${IP} in \${CLUSTER_CONFIG}"
sed -i -e "/myself/s/[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/\${IP}/g" \${CLUSTER_CONFIG}
fi
redis-server /etc/redis.conf
EOF
cat > ${filePath}/redisSalveTem.sh << EOF
#!/bin/bash
# redis1 容器内执行集群创建
# redis1 redis4 redis7
# redis2 redis5 redis8
# redis3 redis6 redis9
# 1 5 9
# 4 2 8
# 7 3 6
# 进入 redis1 容器
docker exec -it redis1 /bin/sh
# 指定主从节点交叉分布
# redis1 容器内执行集群创建
# 创建主节点
redis-cli --cluster create REDIS1:6379 REDIS4:6379 REDIS7:6379 -a '123456'
# 确认
yes
# 指定主从节点交叉分布
redis-cli --cluster add-node REDIS5:6379 REDIS1:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node REDIS9:6379 REDIS1:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node REDIS2:6379 REDIS4:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node REDIS8:6379 REDIS4:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node REDIS3:6379 REDIS7:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node REDIS6:6379 REDIS7:6379 --cluster-slave -a '123456'
# 检查集群状态"
redis-cli -c -a '123456'
# 查看集群节点 9个
CLUSTER NODES
# 退出 redis
exit
# 退出容器
exit
EOF
cat > ${filePath}/redisSetIp.sh << EOF
#!/bin/bash
\cp redisSalveTem.sh redisSalve.sh
function getIp(){
redis1=\$(docker exec -it redis1 sh -c "ping \$1 -c 1 | sed '1{s/[^(]*(//;s/).*//;q}'")
echo "\${redis1}"
}
echo "redis1=\$(getIp redis1)"
echo "redis2=\$(getIp redis2)"
echo "redis3=\$(getIp redis3)"
echo "redis4=\$(getIp redis4)"
echo "redis5=\$(getIp redis5)"
echo "redis6=\$(getIp redis6)"
echo "redis7=\$(getIp redis7)"
echo "redis8=\$(getIp redis8)"
echo "redis9=\$(getIp redis9)"
echo 'sed -i "s#REDIS1#\$redis1#g" redisSalve.sh'
echo 'sed -i "s#REDIS2#\$redis2#g" redisSalve.sh'
echo 'sed -i "s#REDIS3#\$redis3#g" redisSalve.sh'
echo 'sed -i "s#REDIS4#\$redis4#g" redisSalve.sh'
echo 'sed -i "s#REDIS5#\$redis5#g" redisSalve.sh'
echo 'sed -i "s#REDIS6#\$redis6#g" redisSalve.sh'
echo 'sed -i "s#REDIS7#\$redis7#g" redisSalve.sh'
echo 'sed -i "s#REDIS8#\$redis8#g" redisSalve.sh'
echo 'sed -i "s#REDIS9#\$redis9#g" redisSalve.sh'
echo 'cat redisSalve.sh'
EOF
2.2 redisnode2文件
filePath="/home/redis/redisnode2"
mkdir -p $filePath
cat > ${filePath}/docker-compose.yml << EOF
version: '3'
networks:
redis-net:
external: true
services:
redis4:
image: redis:6.0-alpine
hostname: redis4
container_name: redis4
volumes:
- "\$PWD/redis4/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
redis5:
image: redis:6.0-alpine
hostname: redis5
container_name: redis5
volumes:
- "\$PWD/redis5/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
redis6:
image: redis:6.0-alpine
hostname: redis6
container_name: redis6
volumes:
- "\$PWD/redis6/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
EOF
cat > ${filePath}/redis.conf << EOF
port 6379
masterauth '123456'
requirepass '123456'
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF
cat > ${filePath}/redisStart.sh << EOF
#!/bin/sh
CURRENT_DIR=\$(
cd "\$(dirname "\$0")"
pwd
)
nowDate=\$(date "+%Y%m%d%H%M%S")
logFileName="redisStart_"\$nowDate.log
touch \$CURRENT_DIR/\${logFileName}
# 日志函数
log(){
echo "["\$(date "+%Y-%m-%d %H:%M:%S")"]"$1 | tee -a \$CURRENT_DIR/\$logFileName
}
# 通过ifconfig命令获取IP地址
IP=\$(ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{print \$1}')
log "Container IP Address is: \${IP}"
CLUSTER_CONFIG="/data/nodes.conf"
if [ -f \${CLUSTER_CONFIG} ]; then
if [ -z "\${IP}" ]; then
log "Unable to determine IP address!"
exit 1
fi
log "Updating my IP to \${IP} in \${CLUSTER_CONFIG}"
sed -i -e "/myself/s/[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/\${IP}/g" \${CLUSTER_CONFIG}
fi
redis-server /etc/redis.conf
EOF
2.3 redisnode3文件
filePath="/home/redis/redisnode3"
mkdir -p $filePath
cat > ${filePath}/docker-compose.yml << EOF
version: '3'
networks:
redis-net:
external: true
services:
redis7:
image: redis:6.0-alpine
hostname: redis7
container_name: redis7
volumes:
- "\$PWD/redis7/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
redis8:
image: redis:6.0-alpine
hostname: redis8
container_name: redis8
volumes:
- "\$PWD/redis8/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
redis9:
image: redis:6.0-alpine
hostname: redis9
container_name: redis9
volumes:
- "\$PWD/redis9/data:/data"
- "\$PWD/redis.conf:/etc/redis.conf"
- "\$PWD/redisStart.sh:/redis/redisStart.sh"
command: "sh /redis/redisStart.sh"
restart: always
privileged: true
networks:
- redis-net
EOF
cat > ${filePath}/redis.conf << EOF
port 6379
masterauth '123456'
requirepass '123456'
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF
cat > ${filePath}/redisStart.sh << EOF
#!/bin/sh
CURRENT_DIR=\$(
cd "\$(dirname "\$0")"
pwd
)
nowDate=\$(date "+%Y%m%d%H%M%S")
logFileName="redisStart_"\$nowDate.log
touch \$CURRENT_DIR/\${logFileName}
# 日志函数
log(){
echo "["\$(date "+%Y-%m-%d %H:%M:%S")"]"$1 | tee -a \$CURRENT_DIR/\$logFileName
}
# 通过ifconfig命令获取IP地址
IP=\$(ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{print \$1}')
log "Container IP Address is: \${IP}"
CLUSTER_CONFIG="/data/nodes.conf"
if [ -f \${CLUSTER_CONFIG} ]; then
if [ -z "\${IP}" ]; then
log "Unable to determine IP address!"
exit 1
fi
log "Updating my IP to \${IP} in \${CLUSTER_CONFIG}"
sed -i -e "/myself/s/[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/\${IP}/g" \${CLUSTER_CONFIG}
fi
redis-server /etc/redis.conf
EOF
3. 启动 redisnode1
进入 node1服务器
cd /home/redis/redisnode1
docker-compose up -d
4. 启动 redisnode2
进入 node2服务器
cd /home/redis/redisnode2
docker-compose up -d
5. 启动 redisnode3
进入 node3服务器
cd /home/redis/redisnode3
docker-compose up -d
6. 创建集群
进入 node1服务器
bash redisSetIp.sh
复制上面打印的命令进行执行生成加入集群的语句
按照步骤一步一步的加入
# redis1 容器内执行集群创建
# redis1 redis4 redis7
# redis2 redis5 redis8
# redis3 redis6 redis9
# 1 5 9
# 4 2 8
# 7 3 6
# 进入 redis1 容器
docker exec -it redis1 /bin/sh
# 指定主从节点交叉分布
# redis1 容器内执行集群创建
# 创建主节点
redis-cli --cluster create 10.0.1.149:6379 10.0.1.157:6379 10.0.1.29:6379 -a '123456'
# 确认
yes
# 指定主从节点交叉分布
redis-cli --cluster add-node 10.0.1.156:6379 10.0.1.149:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node 10.0.1.176:6379 10.0.1.149:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node 10.0.1.150:6379 10.0.1.157:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node 10.0.1.175:6379 10.0.1.157:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node 10.0.1.146:6379 10.0.1.29:6379 --cluster-slave -a '123456'
redis-cli --cluster add-node 10.0.1.158:6379 10.0.1.29:6379 --cluster-slave -a '123456'
# 检查集群状态"
redis-cli -c -a '123456'
# 查看集群节点 9个
CLUSTER NODES
# 退出 redis
exit
# 退出容器
7.测试用例
7.1 用例1
设置一个值
将对应值的节点关闭
查看集群，查看设置的参数
启动关闭的节点，查看集群是否加入
