Redis Cluster Deployment Configuration

Redis Cluster Deployment Configuration

Test environment: The server system is Centos6.5,redis version 3.2.2, using a machine, simulates 6 Redis instances to create a Redis cluster, where 3 master 3 from

1. Set up the Redis installation directory separately and copy the redis.conf to the installation directory.

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2. Modify the redis.conf configuration file in each directory

Port 7000 #端口

Daemonize Yes

cluster-enabled Yes #开启集群模式

Cluster-config-file nodes-7000.conf #集群配置文件

Cluster-node-timeout #超时时间

AppendOnly Yes

dir/rs-base/servers/redis-2.x/cluster/7000

3. Launch instances separately

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See if all has started successfully

4. Now that we have six running Redis instances, we need to use these instances to create the cluster and write a configuration file for each node.

By using the Redis Cluster command-line tool Redis-trib, writing the node configuration file can be done very easily redis-trib is located in the Redis Source src folder, which is a Ruby program that creates a new cluster by sending special commands to the instance. Check the cluster, or re-shard (reshared) the cluster.

Execute the following command to create the cluster:

/REDIS-TRIB.RB Create--replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1 : 7005

(Note: This command--replicas the number of slave allocated per master node in the SRC directory after Redis decompression)

Prompt after execution:/usr/bin/env:ruby:no such file or directory

Ruby is not installed in the system, so the above error is reported.

Install Ruby First:

[[email protected] yum.repos.d]# Yum install Ruby

[email protected] yum.repos.d]# Yum install RubyGems

[[Email protected] yum.repos.d]# gem install Redis

Create the cluster again:

[Email protected] src]#/redis-trib.rb create--replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005

Redis automatically selects Master-slave

5. Test the cluster

In any one of the nodes using Redis-cli-c-P 7000, set AAA BBB

Again to other nodes using get AAA can get value,

Simulates one of the primary node failures, kills a redis process, and then uses get and set for other nodes without exception, and its slave node becomes the master node.

6. Check the cluster: Through a check cluster node, you know the whole cluster status, you can see who is the Lord, who is from.

./REDIS-TRIB.RB Check 127.0.0.1:7000

Add node: redis-trib.rb Add-node want to increase the ip:port in the cluster that already exists Ip:port

./redis-trib.rb Add-node 127.0.0.1:7006 127.0.0.1:7000

If you report this mistake,

Need to delete the file where you redis.conf inside Cluster-config-file

If you intend to make the new node the slave node of the 127.0.0.1:7005, simply connect the new node with the client, and then execute the following command:

Redis 127.0.0.1:7006> Cluster Replicate 3c3a0c74aae0b56170ccb03a76b60cfe7dc1912e

(ID for ID 7005)

Use the following command to see if the slave node is not 7005 (ID of the primary node)

REDIS-CLI-P 7000 Cluster Nodes | grep slave | grep 3c3a0c74aae0b56170ccb03a76b60cfe7dc1912e

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Redis Cluster Deployment Configuration