Redis cluster setup - use docker to quickly build a test redis cluster

Use scripts to quickly build six redis example

1. Pull docker Mirror image

docker pull redis:5.0.7

2. Quickly build six redis example

for port in $(seq 7001 7006); \
do \
	mkdir -p /mydata/redis/node-${port}/conf
	touch /mydata/redis/node-${port}/conf/redis.conf
	cat << EOF >/mydata/redis/node-${port}/conf/redis.conf
	port ${port}
	cluster-enabled yes
	cluster-config-file nodes.conf
	cluster-node-timeout 5000
	#  Current node ip
	cluster-announce-ip 192.168.56.10
	cluster-announce-port ${port}
	#  The port for information exchange between clusters 
	cluster-announce-bus-port 1${port}
	appendonly yes
	EOF
	
	docker run -p ${port}:${port} -p 1${port}:1${port} --name redis-${port} \
	-v /mydata/redis/node-${port}/data:/data \
	-v /mydata/redis/node-${port}/conf/redis.conf:/etc/redis/redis.conf \
	-d redis:5.0.7 redis-server /etc/redis/redis.conf; \
done

3. Other commands

docker stop $(docker ps -a |grep redis-700 | awk '{ print $1}')
docker start $(docker ps -a |grep redis-700 | awk '{ print $1}')
docker rm $(docker ps -a |grep redis-700 | awk '{ print $1}')

build redis colony

1. Just go into one redis example

docker exec -it redis-7001 bash

2. establish redis colony

redis-cli --cluster create 192.168.56.10:7001 192.168.56.10:7002 192.168.56.10:7003 192.168.56.10:7004 192.168.56.10:7005 192.168.56.10:7006 --cluster-replicas 1

–cluster-replicas 1 It means to set the master node to have a slave node .


We can see ,7001、7002、7003 It's the master node ,7006 yes 7002 From the ,7005 yes 7001 From the ,7004 yes 7003 From the .

here ,redis Cluster building completed

Test use redis colony

1. Connect any one redis node

docker exec -it redis-7002 /bin/bash
redis-cli -c -h 192.168.56.10 -p 7002

2. Get cluster information

cluster info

3. Get cluster node information

cluster nodes

4.set/get Test data

We found that , Will redirect normally

5. At this point, we stop a master node

Then check the node information , Will find 7005 Number redis Instead of 7001, Become the master node

6. At this time, the 7001 start-up

We found that ,7001 Automatically become 7005 The slave node of