redis运维(三)redis6.0.8安装
① 官网下载稳定版本
wget http://download.redis.io/releases/redis-6.0.8.tar.gz
安装文档
② yum安装gcc
redis6.0.0+ '需要' gcc到'5.3及以上版本'
通过'安装devtoolset的方式'间接升级gcc'指定'版本
------ '安装指定版本gcc' ------
yum -y install centos-release-scl
# 安装指定版本 yum -y install devtoolset-{7,8,9}-gcc*
yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils
scl enable devtoolset-9 bash
注意：scl命令启用只是'临时的',退出shell或重启'就会恢复原系统gcc版本'
需求：如果要长期使用对应版本的gcc,写入系统脚本,'永久生效' -->'注意这里的数字9'
echo "source /opt/rh/devtoolset-9/enable" >>/etc/profile③ 编译安装redis
tar -zxf redis-6.0.8.tar.gz
cd redis-6.0.8
'安装systemd的开发包'
yum install -y systemd-devel
'编译' -->'systemd管理'
make USE_SYSTEMD=yes
'编译安装'到'指定目录' -->移动文件到'指定目录'
make install
'进入工具目录'
cd utils/
cp systemd-redis_server.service /etc/systemd/system/
-------'redis-trib.rb'-------
redis-6.0.8/src/redis-trib.rbredis-trib.rb命令详解
make PREFIX=/usr/local/redis install
④ redis systemd管理
make install --> '默认是移动到' --> '/usr/local/bin/' -->'跟service文件适配'
普通用户的身份启动
'判断是否有该用户'
id redis || (groupadd redis && useradd redis -M -g redis -s /sbin/nologin)
解释 ：
1、-M '不创建主目录'
2、-s '不允许登录' /sbin/nologin redis
3、-g '加入redis组'⑤ 修改配置文件
sed -i /etc/systemd/system/systemd-redis_server.service --> '修改'
'/usr/lib/systemd/system目录'
'注意' notify 会失败,'换成 forking 方式启动',让主进程'复制一个子进程'的方式执行
27
34 Type=forking
38 User=redis
39 Group=redis
------ 'redis.conf'的位置 ------
vim redis-6.0.8/redis.conf
备注： 最好移动到/etc目录 -->'chown redis /etc/redis.conf'
# 将 no 改为 yes,表示以'后台方式启动'服务
225 daemonize yes
# 将 no 改为 systemd,表示以 'CentOS systemd' 系统服务方式启动
236 supervised systemd
------ 'sentinel.conf'的位置 ------
redis-6.0.8/sentinel.conf
备注： 最好也移动到'/etc'目录 -->'chown redis /etc/sentinel.conf'⑥ service文件
1 # example systemd service unit file for redis-server
2 #
3 # In order to use this as a template for providing a redis service in your
4 # environment, _at the very least_ make sure to adapt the redis configuration
5 # file you intend to use as needed (make sure to set "supervised systemd"), and
6 # to set sane TimeoutStartSec and TimeoutStopSec property values in the unit's
7 # "[Service]" section to fit your needs.
8 #
9 # Some properties, such as User= and Group=, are highly desirable for virtually
10 # all deployments of redis, but cannot be provided in a manner that fits all
11 # expectable environments. Some of these properties have been commented out in
12 # this example service unit file, but you are highly encouraged to set them to
13 # fit your needs.
14 #
15 # Please refer to systemd.unit(5), systemd.service(5), and systemd.exec(5) for
16 # more information.
17
18 [Unit]
19 Description=Redis data structure server
20 Documentation=https://redis.io/documentation
21 #Before=your_application.service another_example_application.service
22 #AssertPathExists=/var/lib/redis
23 Wants=network-online.target
24 After=network-online.target
25
26 [Service]
27 ExecStart=/usr/local/bin/redis-server /etc/redis.conf --supervised systemd
28 ## Alternatively, have redis-server load a configuration file:
29 #ExecStart=/usr/local/bin/redis-server /path/to/your/redis.conf
30 LimitNOFILE=10032
31 NoNewPrivileges=yes
32 #OOMScoreAdjust=-900
33 #PrivateTmp=yes
34 Type=forking
# TimeoutStartSec=infinity
# TimeoutStopSec=infinity
37 UMask=0077
38 User=redis
39 Group=redis
# WorkingDirectory=/var/lib/redis
41
42 [Install]
43 WantedBy=multi-user.target
redis报错解决
其它报错,参数覆盖
'日志文件需要自己创建' -->并且'修改属性'
chown redis.redis /var/log/redis-server.log
三个告警
相关报错的处理
⑦ 日志和rdb文件
'默认是' --> logfile "" -->导入到'/dev/null'
logfile "/var/log/redis-servre.log"
touch /var/log/redis-servre.log
chown redis.redis /var/log/redis-servre.log
------------ 'rdb文件' ------------
'默认' --> dir ./
dir /var/lib/redis/
mkdir -p /var/lib/redis/
chown redis.redis /var/lib/redis
------------ '之后重启' ------------参考1
参考2