How to set up a redis cluster
- silencementOriginal
- 2019-06-06 13:59:122536browse
Brief description
In October 2018, Redis released the stable version 5.0, launching various new features, one of which was to give up Ruby's clustering method is changed to the redis-cli method written in C language, which greatly reduces the complexity of cluster construction. Updates about the cluster can be seen in the version notes of Redis5, as follows:
The cluster manager was ported from Ruby (redis-trib.rb) to C code inside redis-cli. check `redis-cli --cluster help ` for more info.
You can check the Redis official website to view the cluster construction method, the link is as follows
https://redis.io/topics/ cluster-tutorial
The following steps are to build a Redis cluster with 6 nodes on a Linux server.
Operation steps
Create directory
New directory:/root/software/redis
Download the source code and unzip and compile
wget http://download.redis.io/releases/redis-5.0.0.tar.gz tar xzf redis-5.0.0.tar.gz cd redis-5.0.0 make
Create 6 Redis configuration files
The 6 configuration files cannot be in the same directory. Here we define it as follows:
/root/software/redis/redis-cluster-conf/7001/redis.conf /root/software/redis/redis-cluster-conf/7002/redis.conf /root/software/redis/redis-cluster-conf/7003/redis.conf /root/software/redis/redis-cluster-conf/7004/redis.conf /root/software/redis/redis-cluster-conf/7005/redis.conf /root/software/redis/redis-cluster-conf/7006/redis.conf
The content of the configuration file is:
port 7001 #端口 cluster-enabled yes #启用集群模式 cluster-config-file nodes.conf cluster-node-timeout 5000 #超时时间 appendonly yes daemonize yes #后台运行 protected-mode no #非保护模式 pidfile /var/run/redis_7001.pid
The port and pidfile need to be adjusted according to different folders
Start the node
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7001/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7002/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7003/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7004/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7005/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7006/redis.conf
Start the cluster
/root/software/redis/redis-5.0.0/src/redis-cli --cluster create 192.168.2.40:7001 192.168.2.40:7002 192.168.2.40:7003 192.168.2.40:7004 192.168.2.40:7005 192.168.2.40:7006 --cluster-replicas 1
After startup, you can see the success message, as follows:
>>> Performing hash slots allocation on 6 nodes... Master[0] -> Slots 0 - 5460 Master[1] -> Slots 5461 - 10922 Master[2] -> Slots 10923 - 16383 Adding replica 192.168.2.40:7004 to 192.168.2.40:7001 Adding replica 192.168.2.40:7005 to 192.168.2.40:7002 Adding replica 192.168.2.40:7006 to 192.168.2.40:7003 >>> Trying to optimize slaves allocation for anti-affinity [WARNING] Some slaves are in the same host as their master M: 191c645200a8b4d267f71e3354c8248dbb533dde 192.168.2.40:7001 slots:[0-5460] (5461 slots) master M: 400a08d4e5a534c1b609988105d3e045395fbd12 192.168.2.40:7002 slots:[5461-10922] (5462 slots) master M: 684f6aa0fbccda295ce6818a8c01ee7255a7b002 192.168.2.40:7003 slots:[10923-16383] (5461 slots) master S: f2701549ae98315b432d73b49d139ee77d5685b4 192.168.2.40:7004 replicates 684f6aa0fbccda295ce6818a8c01ee7255a7b002 S: 9fdc1e375436767ab815cbddd3df674f3bc2ca99 192.168.2.40:7005 replicates 191c645200a8b4d267f71e3354c8248dbb533dde S: e7742888ed85b37cff4a98e861e99bb16e8bae2c 192.168.2.40:7006 replicates 400a08d4e5a534c1b609988105d3e045395fbd12 Can I set the above configuration? (type 'yes' to accept): yes >>> Nodes configuration updated >>> Assign a different config epoch to each node >>> Sending CLUSTER MEET messages to join the cluster Waiting for the cluster to join .... >>> Performing Cluster Check (using node 192.168.2.40:7001) M: 191c645200a8b4d267f71e3354c8248dbb533dde 192.168.2.40:7001 slots:[0-5460] (5461 slots) master 1 additional replica(s) M: 684f6aa0fbccda295ce6818a8c01ee7255a7b002 192.168.2.40:7003 slots:[10923-16383] (5461 slots) master 1 additional replica(s) S: 9fdc1e375436767ab815cbddd3df674f3bc2ca99 192.168.2.40:7005 slots: (0 slots) slave replicates 191c645200a8b4d267f71e3354c8248dbb533dde S: e7742888ed85b37cff4a98e861e99bb16e8bae2c 192.168.2.40:7006 slots: (0 slots) slave replicates 400a08d4e5a534c1b609988105d3e045395fbd12 M: 400a08d4e5a534c1b609988105d3e045395fbd12 192.168.2.40:7002 slots:[5461-10922] (5462 slots) master 1 additional replica(s) S: f2701549ae98315b432d73b49d139ee77d5685b4 192.168.2.40:7004 slots: (0 slots) slave replicates 684f6aa0fbccda295ce6818a8c01ee7255a7b002 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
At this point, the Reids cluster is completed.
The above is the detailed content of How to set up a redis cluster. For more information, please follow other related articles on the PHP Chinese website!