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This article is about how to deploy Redis3.0 clusters in centos systems. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

(at least 3 master nodes are needed for the cluster to work properly. Here we need to create 6 redis nodes, of which three are master nodes and three are slave nodes. The ip and port correspondence of the corresponding redis nodes are as follows)

192.168.1.160:7000

192.168.1.160:7001

192.168.1.160:7002

192.168.1.160:7003

192.168.1.160:7004

192.168.1.160:7005

1: download redis. Download version 3.0.0 on the official website, 2. 0 before. Which version does not support cluster mode

Download address: http://download.redis.io/releases/redis-3.0.0.tar.gz

2: upload server, decompress, compile

Tar-zxvf redis-3.0.0.tar.gz

Mv redis-3.0.0.tar.gz redis3.0

Cd / usr/local/redis3.0

Make

Make install

3: the directory required to create the cluster

Mkdir-p / usr/local/cluster

Cd / usr/local/cluster

Mkdir 7000

Mkdir 7001

Mkdir 7002

Mkdir 7003

Mkdir 7004

Mkdir 7005

4: modify the configuration file redis.conf

Cp / usr/local/redis3.0/redis.conf / usr.local/cluster

Vi redis.conf

# # modify the following options in the configuration file

Port 7000

Daemonize yes

Cluster-enabled yes

Cluster-config-file nodes.conf

Cluster-node-timeout 5000

Appendonly yes

# # after modifying these configuration items in the redis.conf configuration file, copy the configuration file to the 7000Universe 7001and7002and7003and7004and7005 directory respectively

Cp / usr/local/cluster/redis.conf / usr/local/cluster/7000

Cp / usr/local/cluster/redis.conf / usr/local/cluster/7001

Cp / usr/local/cluster/redis.conf / usr/local/cluster/7002

Cp / usr/local/cluster/redis.conf / usr/local/cluster/7003

Cp / usr/local/cluster/redis.conf / usr/local/cluster/7004

Cp / usr/local/cluster/redis.conf / usr/local/cluster/7005

# # Note: after the copy is completed, modify the port parameter in the redis.conf file under the 7001Universe 7002Universe 7003Universe 7004ax 7005 directory, and change it to the name of the corresponding folder.

5: start these 6 redis instances respectively

Cd / usr/local/cluster/7000

Redis-server redis.conf

Cd / usr/local/cluster/7001

Redis-server redis.conf

Cd / usr/local/cluster/7002

Redis-server redis.conf

Cd / usr/local/cluster/7003

Redis-server redis.conf

Cd / usr/local/cluster/7004

Redis-server redis.conf

Cd / usr/local/cluster/7005

Redis-server redis.conf

# # use the command to check the startup status of redis after startup ps-ef | grep redis

The following figure shows that the startup is successful.

6: execute the create cluster command of redis to create a cluster

Cd / usr/local/redis3.0/src

. / redis-trib.rb create-- replicas 1 192.168.1.1607000 192.168.1.160V 7001 192.168.1.160Rd 7002 192.168.1.160Rd 7003 192.168.1.160Rd 7004 192.168.1.1607005

6.1 an error may be reported when executing the above command, because it is an executed ruby script, which requires the environment of ruby

Error content: / usr/bin/env:ruby: No such file or directory

Therefore, you need to install ruby in the environment. Yum install ruby installation is recommended here.

Yum install ruby

6.2 then execute the create cluster command in step 6, which may also report an error indicating that the rubygems component is missing and install using yum

Error content:

. / redis-trib.rb:24:in `require': no suchfile to load-- rubygems (LoadError)

From./redis-trib.rb:24

Yum install rubygems

6.3 if you execute the command in step 6 again, there may be an error indicating that redis cannot be loaded because of the lack of interfaces for redis and ruby. Install using gem

Error content:

/ usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31: in `gem _ original_require': no such file to load-- redis (LoadError)

From/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'

From./redis-trib.rb:25

Gem install redis

6.4 execute the command in step 6 again and execute normally

Enter yes and then the configuration is complete.

At this point, the redis cluster is built successfully!

7: use the redis-cli command to enter the cluster environment

Redis-cli-c-p 7000

Thank you for reading! This is the end of the article on "how to deploy Redis3.0 clusters in the centos system". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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