记录在CentOS 7下安装Redis 5.0.5并加入Systemd服务的步骤。
1. 安装gcc-c++, tcl
yum install gcc-c++ tcl
2. 解压缩, 编译, 测试
tar zxvf redis-5.0.5.tar.gz
make
make test
3. 安装至/opt
make PREFIX=/opt/redis/redis-5.0.5 install
# 创建软链
ln -s redis-5.0.5 latest
4. 配置文件, 在源文件目录下有例子 redis.conf, 最后的配置内容为(后半部分使用默认, 无改动)
[root@p01 ~]# cat /opt/redis/latest/conf/redis_16379.conf | grep -v '^$'|grep -v '^#'|grep -v '^;'
bind 192.168.123.32
protected-mode yes
port 16379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised auto
pidfile /var/run/redis_16379.pid
loglevel notice
logfile "/data/redis/logs/redis_16379.log"
databases 16
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /data/redis/db/
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
requirepass rzczurzlx4xzs|yjpkdjzhljlevY0bLh
....
5. 在配置daemonize为no的时候, 直接用命令行启动测试, 观察日志输出
./bin/redis-server ./conf/redis_16379.conf
6. 解决warning
对于 /proc/sys/net/core/somaxconn 和 overcommit_memory is set to 0, 修改/etc/sysctl.conf , 增加
net.core.somaxconn = 1024
vm.overcommit_memory = 1
然后执行 sysctl -p
对于transparent_hugepage, 首先实时修改
echo never >> /sys/kernel/mm/transparent_hugepage/enabled
echo never >> /sys/kernel/mm/transparent_hugepage/defrag
检查
[root@middle ~]# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
[root@middle ~]# cat /sys/kernel/mm/transparent_hugepage/defrag
[always] madvise never
# 以上都需要变成never
加入启动自动修改
# 在/etc/rc.local中增加如下内容
if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi
.
7. 加入Systemd服务. 增加 /lib/systemd/system.redis.service, 内容如下
[Unit]
Description=Redis
After=network.target
[Service]
Type=forking
PIDFile=/var/run/redis_16379.pid
ExecStart=/opt/redis/latest/bin/redis-server /opt/redis/latest/conf/redis_16379.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/opt/redis/latest/bin/redis-cli -p 16379 shutdown
PrivateTmp=true
[Install]
WantedBy=multi-user.target
注意: 这边并没有使用 #ExecStop=/bin/kill -s QUIT $MAINPID 这样的命令来停止redis, 因为使用这个语句在运行 systemctl stop redis后, redis并未执行关闭动作, 而是直接退出. 这时候用 systemctl status redis 查看状态是failed. 只有用ExecStop=/opt/redis/latest/bin/redis-cli -p 16379 shutdown 才能正确停止redis, 即使conf中配置了口令, 这里也不需要指定口令.
加入服务并启动
systemctl enable redis.service
systemctl start redis
systemctl status redis
下面关于Redis的文章您也可能喜欢，不妨参考下：
CentOS 7下Redis5安装部署与开机自启动 https://www.558idc.com/Linux/2019-06/159178.htm
Redis集群以及自动故障转移测试 https://www.558idc.com/Linux/2019-01/156599.htm
Ubuntu搭建Redis 集群 https://www.558idc.com/Linux/2019-07/159616.htm
CentOS 7下Redis的安装与配置 https://www.558idc.com/Linux/2017-02/140363.htm
Ubuntu 16.04环境中安装PHP7.0 Redis扩展 https://www.558idc.com/Linux/2016-09/135631.htm
Redis 单机&集群离线安装部署 https://www.558idc.com/Linux/2017-03/141403.htm
CentOS 7.0 安装Redis 3.2.1详细过程和使用常见问题 https://www.558idc.com/Linux/2016-09/135071.htm
Ubuntu 16.04环境中安装PHP7.0 Redis扩展 https://www.558idc.com/Linux/2016-09/135631.htm
Redis实战 中文PDF http://www.558idc.com/Linux/2016-04/129932.htm