How to implement Redis stand-alone installation and sentinel mode cluster installation

1. Redis stand-alone version installation

1.1: Download the installation package

cd /usr/local/src/
wget https://download.redis.io/releases/redis-5.0.13.tar.gz

Seeing the redis-5.0.13.tar.gz file indicates that the download is successful

1.2: Decompress the installation package

tar -zxvf redis-5.0.13.tar.gz

After decompression is completed, enter the decompressed folder and you will see the following file content

cd redis-5.0.13
ll
 
-rw-rw-r--.  1 root root 125833 Jul 22 02:07 00-RELEASENOTES
-rw-rw-r--.  1 root root     53 Jul 22 02:07 BUGS
-rw-rw-r--.  1 root root   2381 Jul 22 02:07 CONTRIBUTING
-rw-rw-r--.  1 root root   1487 Jul 22 02:07 COPYING
drwxrwxr-x.  6 root root    124 Jul 22 02:07 deps
-rw-rw-r--.  1 root root     11 Jul 22 02:07 INSTALL
-rw-rw-r--.  1 root root    151 Jul 22 02:07 Makefile
-rw-rw-r--.  1 root root   6888 Jul 22 02:07 MANIFESTO
-rw-rw-r--.  1 root root  20555 Jul 22 02:07 README.md
-rw-rw-r--.  1 root root  63088 Jul 22 02:07 redis.conf
-rwxrwxr-x.  1 root root    275 Jul 22 02:07 runtest
-rwxrwxr-x.  1 root root    280 Jul 22 02:07 runtest-cluster
-rwxrwxr-x.  1 root root    373 Jul 22 02:07 runtest-moduleapi
-rwxrwxr-x.  1 root root    281 Jul 22 02:07 runtest-sentinel
-rw-rw-r--.  1 root root   9710 Jul 22 02:07 sentinel.conf
drwxrwxr-x.  3 root root   4096 Jul 22 02:07 src
drwxrwxr-x. 11 root root    182 Jul 22 02:07 tests
drwxrwxr-x.  8 root root   4096 Jul 22 02:07 utils

1.3: Execute the make command and compile the redis code

make

Generally, there will be some errors, don’t panic. Since redis is developed in C language, you must first confirm whether the gcc environment (gcc -v) is installed before installation. If it is not installed, execute the following command to install it yum install -y gcc

After the gcc environment is successfully installed, execute make distclean Clear the make records in between, and then re-make

1.4: Install and specify the installation directory

make install PREFIX=/usr/local/redis

1.5: Configure environment variables

vi /etc/profile
#在最后面加上以下内容
export REDIS_HOME=/usr/local/redis
export PATH=$PATH:$REDIS_HOME/bin
#使环境变量生效
source /etc/profile

1.6: Let redis start as a service in the background

1.6.1: Copy redis.conf from the redis source code directory to the redis installation directory

cp /usr/local/src/redis-5.0.13/redis.conf /usr/local/redis/bin/

1.6.2: Modify the redis.conf file, change daemonize no to daemonize yes, and start redis as a daemon thread

cd /usr/local/redis/bin/
vi redis.conf

1.6.3: Start in the background and connect to redis for testing. Execute the command to start redis

redis-server /usr/local/redis/bin/redis.conf

Then execute redis-cli to connect to redis, and then set get data test

At this point, the stand-alone version of redis has been installed successfully! ! !

1.7: redis shutdown service

redis-cli shutdown

2. Redis cluster version installation

Instructions for the redis cluster version in this article use the master-slave replication cluster version installation

2.1: The basic cluster topology is as follows

2.2: Modify the redis-sentinel configuration file sentinel.conf

#sentinel-1 配置文件修改内容
port 26379
sentinel monitor mymaster 192.168.33.100 6379 2
 
#sentinel-2 配置文件修改内容
port 26380
sentinel monitor mymaster 192.168.33.100 6379 2
 
#sentinel-3 配置文件修改内容
port 26380
sentinel monitor mymaster 192.168.33.100 6379 2

sentinel monitor Configuration file description: This configuration tells sentinel to listen to a master with the address ip:port. The master-name here can be customized, and quorum is a number. , indicating when how many sentinels consider a master to be invalid, the master is truly invalid. master-name can only contain English letters, numbers, and the three characters ".-_". It should be noted that master-ip should write the real IP address instead of the loopback address (127.0.0.1).

2.3: Modify the redis-server configuration file redis.conf

# redis-1 的 redis.conf配置
port 6379
 
# redis-2 的 redis.conf配置
port 6380
replicaof 127.0.0.1 6379
 
# redis-3 的 redis.conf配置
port 6381
replicaof 127.0.0.1 6379

2.4: Start the redis-1, redis-2, redis-3 services respectively

2.5: Respectively Start sentinel-1, sentinel-2, sentinel-3

cd /usr/local/redis/bin
redis-sentinel sentinel.conf

2.6: Verify the cluster effect

2.6.1: Connect to the main redis service, check the cluster status, you can see the current redis is the master, and the other two redis services are slave

redis-cli -h 192.168.33.100 -p 6379
info replication
#得到以下内容
role:master
connected_slaves:2
slave0:ip=192.168.33.101,port=6380,state=online,offset=246573,lag=1
slave1:ip=192.168.33.102,port=6381,state=online,offset=246706,lag=0
master_replid:bc4a9331019d765fe16199fcdcb357b4681a9f75
master_replid2:b41587d209ec96c2b2c634c1880fed7b12ded6e8
master_repl_offset:246839
second_repl_offset:221755
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:9553
repl_backlog_histlen:237287

2.6.2: Stop the redis main service

redis-cli -h 192.168.33.100 -p 6379 shutdown

2.6.3: Check the log of the sentinel service, you can see that the redis main service is down , the sentinel service actively switches 6381 to the main redis service

2.6.4: Start the 6379 port redis service again to check the cluster status. You can see that 6379 has become a slave service.

The above is the detailed content of How to implement Redis stand-alone installation and sentinel mode cluster installation. For more information, please follow other related articles on the PHP Chinese website!