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##### 安裝redis-server #####
# 創建運行用戶
useradd redis -s /sbin/nologin -M
# 上傳軟件到指定位置,我的軟件保存位置為
mkdir -p /server/tools/
# 解壓,配置,編譯,安裝
cd /server/tools/ tar -zxf redis-3.0.5.tar.gz cd redis-3.0.5 make PREFIX=/usr/local/redis make PREFIX=/usr/local/redis install
# 配置redis環境變量
echo ' ' >> /etc/profile echo 'PATH for redis-server' >> /etc/profile echo 'export PATH=/usr/local/redis/bin/:$PATH' >> /etc/profile tail -3 /etc/profile source /etc/profile echo $PATH
# 或者(重啟失效)
export PATH=/usr/local/redis/bin/:$PATH echo $PATH
# 創建配置文件,數據,日志等相關目錄,并拷貝配置文件
# 創建規范的目錄結構有助于行成良好習慣,提高效率
mkdir -p /usr/local/redis/conf mkdir -p /usr/local/redis/data mkdir -p /usr/local/redis/logs cp redis.conf /usr/local/redis/conf/ cd /usr/local/redis/conf/ tree /usr/local/redis
# 到此redis基本配置便已完成,可以使用redis初始配置進行啟動
# 啟動命令
/usr/local/redis/bin/redis-server /usr/local/redis/conf/redis.conf &
# 查看啟動狀態,進程和端口
ps -ef |grep redis netstat -anptl |grep redis
# 測試及使用
# 客戶端連接命令為:
/usr/local/redis/bin/redis-cli -p 6379 [root@cache redis]# redis-cli -p 6379 127.0.0.1:6379> set a 1 OK 127.0.0.1:6379> get a "1" 127.0.0.1:6379> set b 2 OK 127.0.0.1:6379> set c 3 OK 127.0.0.1:6379> keys * 1) "c" 2) "a" 3) "b" 127.0.0.1:6379> exit
# 以上為簡單測試,驗證安裝正確與否
# 安全關閉redis
/usr/local/redis/bin/redis-cli shutdown
# 關閉redis時,數據默認會保存在啟動redis時候所在的位置,保存為dump.rdb
-------- 簡單優化redis ---------
# 以默認配置啟動redis-server會出現以下警告信息:不影響使用,
# 不過以筆者的習慣自然不會容忍此等警告信息的存在:
[root@cache redis]# redis-server /usr/local/redis/conf/redis.conf & [1] 4570 [root@cache redis]# [4570] 07 Dec 03:54:50.938 * Increased maximum number of open files to 10032 (it was originally set to 1024). _._ _.-``__ ''-._ _.-`` `. `_. ''-._ Redis 3.0.5 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in stand alone mode |`-._`-...-` __...-.``-._|'` _.-'| Port: 6379 | `-._ `._ / _.-' | PID: 4570 `-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-' [4570] 07 Dec 03:54:50.939 # Server started, Redis version 3.0.5 [4570] 07 Dec 03:54:50.939 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect. [4570] 07 Dec 03:54:50.939 # 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/kernel/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. [4570] 07 Dec 03:54:50.939 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. [4570] 07 Dec 03:54:50.939 * The server is now ready to accept connections on port 6379
# 根據啟動日志提示需要優化一些內核的參數,按提示操作:
echo never > /sys/kernel/mm/transparent_hugepage/enabled cat /sys/kernel/mm/transparent_hugepage/enabled echo 511 > /proc/sys/net/core/somaxconn cat /proc/sys/net/core/somaxconn echo "vm.overcommit_memory = 1" >>/etc/sysctl.conf sysctl -p
# 以上操作重啟失效,可以按下操作配置下次開機生效,順便設置redis開機自啟動
echo " " >> /etc/rc.local echo "# redis-server by zs in $(date +%F)" >> /etc/rc.local echo "echo never > /sys/kernel/mm/transparent_hugepage/enabled" >> /etc/rc.local echo "echo 511 > /proc/sys/net/core/somaxconn" >>/etc/rc.local echo "/usr/local/redis/bin/redis-server /usr/local/redis/conf/redis.conf" >> /etc/rc.local tail -5 /etc/rc.local
# 繼續優化配置文件
vim /usr/local/redis/conf/redis.conf
# 在配置文件中尋找以下關鍵字,可以按照以下內容修改:
daemonize yes # 是否后臺運行,yes為后臺運行 pidfile /usr/local/redis/logs/redis.pid # redis的pid文件保存位置 port 6379 # redis監控端口 bind 0.0.0.0 # redis監控的IP timeout 0 # 客戶端連接關閉時服務端保持連接的時長,超時 # 0為不斷開連接,等待客戶端再次連接 logfile "/usr/local/redis/logs/redis.log" # 日志文件保存位置 dbfilename redis.rdb # redis數據文件名 dir /usr/local/redis/data/ # redis數據保存位置 appendonly yes # 是否寫日志,類似于mysql的bin-log
以上為簡單的redis優化配置
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