redis环境部署
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2022-06-22 22:14:38
运维开发技术交流群欢迎大家加入一起学习(QQ:722381733) 一、Redis服务介绍: 二、Redis部署: 1、前往压缩包存放目录(下载地址:wget http://download.redis.io/releases/redis-3.2.0.tar.gz): 2、解压 3、前往解压出来的r ......
运维开发技术交流群欢迎大家加入一起学习(qq:722381733)
一、redis服务介绍:
redis简单来讲就是一个数据库,一个用来存储缓存的数据库容器,主要是让项目数据能写进缓存,为用户提搞更舒适的体验而设定的。或者也可以理解为,为完成大并非,大访问量的项目提取数据库信息缓慢而专门设定的一个软件。当然redis还可以做分布式锁等功能,这里就不一一介绍了。
二、redis部署:
1、前往压缩包存放目录(下载地址:wget http://download.redis.io/releases/redis-3.2.0.tar.gz):
[root@web1 package]# ls apache-tomcat-8.5.39.tar.gz jdk-8u131-linux-x64.tar.gz redis-3.2.0.tar.gz [root@web1 package]#
2、解压
[root@web1 package]# tar xf redis-3.2.0.tar.gz [root@web1 package]# ls apache-tomcat-8.5.39.tar.gz jdk-8u131-linux-x64.tar.gz redis-3.2.0 redis-3.2.0.tar.gz
3、前往解压出来的redis目录并解析
[root@web1 package]# cd redis-3.2.0 [root@web1 redis-3.2.0]# make cd src && make all make[1]: entering directory `/package/redis-3.2.0/src' rm -rf redis-server redis-sentinel redis-cli redis-benchmark redis-check-rdb redis-check-aof *.o *.gcda *.gcno *.gcov redis.info lcov-html (cd ../deps && make distclean) make[2]: entering directory `/package/redis-3.2.0/deps' (cd hiredis && make clean) > /dev/null || true (cd linenoise && make clean) > /dev/null || true (cd lua && make clean) > /dev/null || true (cd geohash-int && make clean) > /dev/null || true (cd jemalloc && [ -f makefile ] && make distclean) > /dev/null || true
4、将解析后的目录移动到/usr/local/,并创建软连接
[root@web1 redis-3.2.0]# mv /package/redis-3.2.0 /usr/local/ [root@web1 redis-3.2.0]# ln -s /usr/local/redis-3.2.0/ /usr/local/redis [root@web1 redis-3.2.0]# cd /usr/local/ [root@web1 local]# ls apache-tomcat-8.5.39 bin etc games include jdk jdk1.8.0_131 lib lib64 libexec redis redis-3.2.0 sbin share src tomcat
5、现在就可以前往安装目录启动redis了
[root@web1 local]# cd /usr/local/redis [root@web1 redis]# src/redis-server ./redis.conf 4610:m 23 may 00:15:54.657 * increased maximum number of open files to 10032 (it was originally set to 1024). _._ _.-``__ ''-._ _.-`` `. `_. ''-._ redis 3.2.0 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) running in standalone mode |`-._`-...-` __...-.``-._|'` _.-'| port: 6379 | `-._ `._ / _.-' | pid: 4610 `-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-' 4610:m 23 may 00:15:54.698 # warning: the tcp backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 4610:m 23 may 00:15:54.698 # server started, redis version 3.2.0 4610:m 23 may 00:15:54.698 # 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. 4610:m 23 may 00:15:54.698 # 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. 4610:m 23 may 00:15:54.698 * the server is now ready to accept connections on port 6379
三、redis简单优化:
1、redis.conf配置文件介绍(先将文件的注释去掉)
[root@web1 redis]# cp redis.conf redis.conf.`date +%f` [root@web1 redis]# sed -ri '/#|^$/d' redis.conf [root@web1 redis]# cat redis.conf bind 127.0.0.1 #绑定的主机地址(这里就是本主机的ip地址,如果想做“单点”让多台机子访问,直接{bind ip ip ...})。 protected-mode yes port 6379 #指定redis监听端口,默认端口为6379。 tcp-backlog 511 timeout 0 #当客户端闲置多长时间后关闭连接,如果指定为0,表示关闭该功能。 tcp-keepalive 0 daemonize no #redis默认不是以守护进程的方式运行,可以通过该配置项修改,使用yes启用守护进程。(注:这个要是没选yes,如果直接把启动命令写进/etc/rc.local,将直接卡死在环境变量。)。 supervised no pidfile /var/run/redis.pid #当redis以守护进程方式运行时,redis默认会把pid写入/var/run/redis.pid文件,可以通过pidfile指定。 loglevel notice #指定日志记录级别,redis总共支持四个级别:debug、verbose、notice、warning,默认为notice。 logfile "" #配置启动时的日志存放路径,空着表示不要日志。 databases 16 #设置数据库的数量,默认数据库为0,可以使用select <dbid>命令在连接上指定数据库id save 900 1 #指定在多长时间内,有多少次更新操作,就将数据同步到数据文件,可以多个条件配合,redis默认提供如下三个save的配置。 save 300 10 save 60 10000 #分别表示900秒(15分钟)内有1个更改,300秒(5分钟)内有10个更改以及60秒内有10000个更改。 stop-writes-on-bgsave-error yes rdbcompression yes #指定存储至本地数据库时是否压缩数据,默认为yes,redis采用lzf压缩,如果为了节省cpu时间,可以关闭该选项,但会导致数据库文件变的巨大。 rdbchecksum yes dbfilename dump.rdb #指定本地数据库文件名,默认值为dump.rdb。 dir ./ #指定本地数据库存放目录。 slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no slave-priority 100 appendonly no #因为 redis本身同步数据文件是按上面save条件来同步的,所以有的数据会在一段时间内只存在于内存中。默认为no appendfilename "appendonly.aof" #指定更新日志文件名,默认为appendonly.aof appendfsync everysec #指定更新日志条件,共有3个可选值:no:表示等操作系统进行数据缓存同步到磁盘(快)、always:表示每次更新操作后手动调用fsync()将数据写到磁盘(慢,安全)、everysec:表示每秒同步一次(折衷,默认值) no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 3000 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 256mb 64mb 60 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10
2、简单的修改下redis.conf配置文件
[root@web1 redis]# vim redis.conf protected-mode yes port 6379 tcp-backlog 511 timeout 0 tcp-keepalive 0 daemonize yes supervised no pidfile /var/run/redis.pid loglevel notice logfile "/usr/local/redis/log/redis.log" databases 16
......
##其他的不做变化###
3、在redis目录里创建了个log目录用来保存启动日志,然后启动redis
[root@web1 redis]# ./src/redis-server ./redis.conf *** fatal config file error *** reading the configuration file, at line 11 >>> 'logfile "./log/redis.log"' can't open the log file: no such file or directory #注:这里是没有创建log目录 [root@web1 redis]# ls 00-releasenotes contributing deps install manifesto redis.conf runtest runtest-sentinel src utils bugs copying dump.rdb makefile readme.md redis.conf.2019-05-23 runtest-cluster sentinel.conf tests [root@web1 redis]# [root@web1 redis]# mkdir log [root@web1 redis]# ./src/redis-server ./redis.conf
4、检查端口进程
[root@web1 redis]# lsof -i:6379 command pid user fd type device size/off node name redis-ser 4634 root 4u ipv4 27306 0t0 tcp localhost:6379 (listen) [root@web1 redis]# ps -ef|grep 6379 root 4634 1 0 00:51 ? 00:00:00 ./src/redis-server 127.0.0.1:6379 root 4641 1286 0 00:55 pts/0 00:00:00 grep --color=auto 6379 [root@web1 redis]# netstat -lnutp|grep 6379 tcp 0 0 127.0.0.1:6379 0.0.0.0:* listen 4634/./src/redis-se
5、部署开机自启
[root@web1 redis]# cd /etc/init.d/ [root@web1 init.d]# vim redis.sh #!/bin/sh # chkconfig: 2345 10 90 # description: start and stop redis redisport=6379 exec=/usr/local/redis/src/redis-server cliexec=/usr/local/redis/src/redis-cli pidfile=/run/redis.pid conf="/usr/local/redis/redis.conf" case "$1" in start) if [ -f $pidfile ] then echo "$pidfile exists, process is already running or crashed" else echo "starting redis server..." $exec $conf & fi ;; stop) if [ ! -f $pidfile ] then echo "$pidfile does not exist, process is not running" else pid=$(cat $pidfile) echo "stopping ..." $cliexec -p $redisport shutdown while [ -x /proc/${pid} ] do echo "waiting for redis to shutdown ..." sleep 1 done echo "redis stopped" fi ;; restart) "$0" stop sleep 3 "$0" start ;; *) echo "please use start or stop or restart as first argument" ;; esac
####################保存后################
[root@web1 init.d]# chmod +x redis.sh
[root@web1 init.d]# chkconfig --add redis.sh
6、查看启动项
[root@web1 init.d]# chkconfig --list note: this output shows sysv services only and does not include native systemd services. sysv configuration data might be overridden by native systemd configuration. if you want to list systemd services use 'systemctl list-unit-files'. to see services enabled on particular target use 'systemctl list-dependencies [target]'. netconsole 0:off 1:off 2:off 3:off 4:off 5:off 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off redis.sh 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@web1 init.d]#
7、重启redis
[root@web1 init.d]# /etc/init.d/redis.sh restart stopping ... redis stopped starting redis server... [root@web1 init.d]# lsof -i:6379 command pid user fd type device size/off node name redis-ser 4777 root 4u ipv4 29529 0t0 tcp localhost:6379 (listen) [root@web1 init.d]#
###在此就配置完成了,服务部署有什么问题,麻烦读客帮忙提出来,感谢!!!######