生產環境可用redis4.0.11安裝全過程

生產環境可用redis4.0.11安裝全過程
操作系統版本為 centos6.5

先執行initialization.sh優化腳本 詳情見 初始化腳本
我們線上用的是redis-4.0.11.tar.gz
根據日志內容進行優化 //后面會提現處理，我們這里可以先執行，不明白的同學，可以繼續往后看。

優化1：
[root@prd3-redis01-10-183 conf]# echo "vm.overcommit_memory = 1" >> /etc/sysctl.conf
[root@prd3-redis01-10-183 conf]# sysctl -p  
優化2：
[root@prd3-redis01-10-183 conf]# echo "net.core.somaxconn = 511" >> /etc/sysctl.conf
[root@prd3-redis01-10-183 conf]# sysctl -p 
優化3：
還有一個就是關閉透明大頁，我們優化腳本中做了

第一步：執行優化腳本 initialization.sh

第二步：下載redis的安裝包
[root@prd3-redis01-10-183 opt]# wget http://download.redis.io/releases/redis-4.0.11.tar.gz

第三步：下載必要的依賴：yum install -y tcl tcl-devel
[root@prd3-redis01-10-183 opt]# yum install -y tcl tcl-devel
提示：在安裝過程中出現一個報錯為：解決方法如下
在安裝redis的時候 在執行make && make install 的時候 出現報錯
make[3]: gcc: Command not found
/bin/sh: cc: command not found
[root@mysql-redis-mgdb redis-4.0.11]# yum -y install gcc+ gcc-c++
然后需要 刪除掉解壓的redis包 再重新壓縮后 再次執行 make && make install

第四步：創建相關的目錄
[root@prd3-redis01-10-183 opt]# mkdir -p /ivargo/{app,log}
[root@prd3-redis01-10-183 opt]# cd /ivargo/
[root@prd3-redis01-10-183 ivargo]# ll
total 8
drwxr-xr-x 2 root root 4096 Apr 24 15:16 app
drwxr-xr-x 2 root root 4096 Apr 24 15:16 log
[root@prd3-redis01-10-183 ivargo]# cd app/
[root@prd3-redis01-10-183 app]# mkdir redis sentinel
[root@prd3-redis01-10-183 app]# ll
total 8
drwxr-xr-x 2 root root 4096 Apr 24 15:18 redis
drwxr-xr-x 2 root root 4096 Apr 24 15:18 sentinel
[root@prd3-redis01-10-183 app]# cd redis/
[root@prd3-redis01-10-183 redis]# mkdir conf data log
[root@prd3-redis01-10-183 redis]# ll
total 12
drwxr-xr-x 2 root root 4096 Apr 24 15:19 conf
drwxr-xr-x 2 root root 4096 Apr 24 15:19 data
drwxr-xr-x 2 root root 4096 Apr 24 15:19 log

[root@prd3-redis01-10-183 app]# cd sentinel/
[root@prd3-redis01-10-183 sentinel]# ll
total 0
[root@prd3-redis01-10-183 sentinel]# mkdir conf

[root@prd3-redis01-10-183 ivargo]# pwd
/ivargo
[root@prd3-redis01-10-183 ivargo]# tree
.
├── app
│?? ├── redis
│?? │?? ├── conf
│?? │?? ├── data
│?? │?? └── log
│?? └── sentinel
│?? └── conf
└── log

第五步：安裝redis
[root@prd3-redis01-10-183 ivargo]# cd /opt/
[root@prd3-redis01-10-183 opt]# ll
total 1708
-rw-r--r-- 1 root root 1739656 Aug 4 2018 redis-4.0.11.tar.gz
drwxr-xr-x. 2 root root 4096 Nov 22 2013 rh
drwxr-xr-x 2 root root 4096 Apr 24 2019 scripts
[root@prd3-redis01-10-183 opt]# tar zxvf redis-4.0.11.tar.gz
[root@prd3-redis01-10-183 opt]# cd redis-4.0.11
[root@prd3-redis01-10-183 redis-4.0.11]# make && make install
...
...
...

第六步：上傳配置文件到
[root@prd3-redis01-10-183 conf]# pwd
/ivargo/app/redis/conf
[root@prd3-redis01-10-183 conf]# ll
total 4
-rw-r--r-- 1 root root 3946 Apr 24 15:28 6379.conf

第七步，啟動redis
[root@prd3-redis01-10-183 conf]# redis-server /ivargo/app/redis/conf/6379.conf
[root@prd3-redis01-10-183 conf]# netstat -lntup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:6379 0.0.0.0: LISTEN 5195/redis-server 0
tcp 0 0 0.0.0.0:22 0.0.0.0: LISTEN 1543/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0: LISTEN 1619/master
tcp 0 0 :::22 ::: LISTEN 1543/sshd
tcp 0 0 ::1:25 :::* LISTEN 1619/master
[root@prd3-redis01-10-183 conf]# ps -ef|grep redis
root 5195 1 0 15:34 ? 00:00:00 redis-server 0.0.0.0:6379
root 5201 1709 0 15:35 pts/0 00:00:00 grep --color=auto redis

第八步檢查 redis
[root@prd3-redis01-10-183 log]# vim 6379.log
5194:C 24 Apr 15:34:51.909 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
5194:C 24 Apr 15:34:51.909 # Redis version=4.0.11, bits=64, commit=00000000, modified=0, pid=5194, just started
5194:C 24 Apr 15:34:51.909 # Configuration loaded
5195:M 24 Apr 15:34:51.935 Running mode=standalone, port=6379.
5195:M 24 Apr 15:34:51.935 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/c
ore/somaxconn is set to the lower value of 128.
5195:M 24 Apr 15:34:51.935 # Server initialized
5195:M 24 Apr 15:34:51.935 # WARNING overcommit_memory is set to 0! Background save may fail under low memory c
ondition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the comma
nd 'sysctl vm.overcommit_memory=1' for this to take effect.
5195:M 24 Apr 15:34:51.935 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This
will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/k
ernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting
after a reboot. Redis must be restarted after THP is disabled.
5195:M 24 Apr 15:34:51.935 Ready to accept connections

根據日志內容進行優化
優化1：
[root@prd3-redis01-10-183 conf]# echo "vm.overcommit_memory = 1" >> /etc/sysctl.conf
[root@prd3-redis01-10-183 conf]# sysctl -p
優化2：
[root@prd3-redis01-10-183 conf]# echo "net.core.somaxconn = 511" >> /etc/sysctl.conf
[root@prd3-redis01-10-183 conf]# sysctl -p
優化3：
還有一個就是關閉透明大頁，我們優化腳本中做了

溫柔的關閉redis的方法
[root@web03 ~]# redis-server /ivargo/app/redis/conf/6379.conf
[root@web03 ~]# ps -ef|grep redis
root 1718 1 0 18:31 ? 00:00:00 redis-server 0.0.0.0:6379
root 1723 1693 0 18:31 pts/0 00:00:00 grep --color=auto redis
[root@web03 ~]# redis-cli -a xxx
Warning: Using a password with '-a' option on the command line interface may not be safe.
127.0.0.1:6379> shutdown //溫柔關閉redis的方法
not connected>
[root@web03 ~]# ps -ef|grep redis
root 1727 1693 0 18:32 pts/0 00:00:00 grep --color=auto redis

[root@prd3-redis01-10-183 conf]# sh /etc/rc.local

再次啟動redis，就沒有任何的報警了

到此，我們就安裝好了redis，接下來，我們實現redis的sentinel 架構 請期待