實驗環境

node1 ?192.168.56.11 ? 角色 ?salt-master?

node2 ?192.168.56.12 ? 角色 ?salt-minon

完成內容

Salt遠程安裝Redis服務

步驟

在前面的文章中已經搭建好了salt-master和saltminion環境

一，在prod目錄下創建redis相關的目錄，存放狀態文件

[root@linux-node1 ~]# cd /srv/salt/prod/ [root@linux-node1 prod]# mkdir modules/redis -p [root@linux-node1 prod]# tree . └── modules└── redis

二，進入redis目錄創建redis基礎狀態文件，這里我們用簡單的rpm包按照為例

[root@linux-node1 redis]# cat redis-install.sls redis-install:pkg.installed:- name: redis

三，有時候我們修改redis的配置文件或創建集群

[root@linux-node1 prod]# pwd /srv/salt/prod [root@linux-node1 prod]# mkdir redis-cluster [root@linux-node1 prod]# cd redis-cluster/ [root@linux-node1 redis-cluster]# vi redis-master.sls [root@linux-node1 redis-cluster]# cat redis-master.sls include:- modules.redis.redis-installredis-master-config:file.managed:- name: /etc/redis.conf- source: salt://redis-cluster/files/redis-master.conf- user: root- group: root- mode: 644- template: jinja- defaults:REDIS_MEM: 1Gredis-master-service:service.running:- name: redis- enable: True- watch:- file: redis-master-config

四，按照redis取配置文件作為salt模板

[root@linux-node1 redis-cluster]# yum install redis [root@linux-node1 redis-cluster]# cp /etc/redis.conf /srv/salt/prod/redis-cluster/files/ [root@linux-node1 redis-cluster]# tree . ├── files │?? └── redis.conf └── redis-master.sls

五，重命名redis模板文件名

[root@linux-node1 files]# mv redis.conf redis-master.conf [root@linux-node1 files]# pwd /srv/salt/prod/redis-cluster/files

六，更改redis配置文件模板，bind也可以只監聽內網端口

[root@linux-node1 files]# grep -E 'bind|daemonize|maxmemory' redis-master.conf |grep -v ^# bind 0.0.0.0 daemonize yes maxmemory {{ REDIS_MEM }}

七，測試，因為是在prod目錄下 需要添加 saltenv=prod環境變量

[root@linux-node1 redis-cluster]# salt 'linux-node2*' state.sls redis-cluster.redis-master test=True saltenv=prod linux-node2.example.com: ----------ID: redis-installFunction: pkg.installedName: redisResult: NoneComment: The following packages are set to be installed/updated: redisStarted: 22:45:55.034779Duration: 2514.889 msChanges: ----------ID: redis-master-configFunction: file.managedName: /etc/redis.confResult: NoneComment: The file /etc/redis.conf is set to be changedStarted: 22:45:57.551713Duration: 27.659 msChanges: ----------newfile:/etc/redis.conf ----------ID: redis-master-serviceFunction: service.runningName: redisResult: NoneComment: Service is set to be startedStarted: 22:45:57.637546Duration: 71.324 msChanges: Summary ------------ Succeeded: 3 (unchanged=3, changed=1) Failed: 0 ------------ Total states run: 3

八，執行redis狀態模塊

[root@linux-node1 redis-cluster]# salt 'linux-node2*' state.sls redis-cluster.redis-master saltenv=prod linux-node2.example.com: ----------ID: redis-installFunction: pkg.installedName: redisResult: TrueComment: The following packages were installed/updated: redisStarted: 22:48:16.616612Duration: 15732.74 msChanges: ----------jemalloc:----------new:3.6.0-1.el7old:redis:----------new:3.2.10-2.el7old: ----------ID: redis-master-configFunction: file.managedName: /etc/redis.confResult: TrueComment: File /etc/redis.conf updatedStarted: 22:48:32.351877Duration: 45.19 msChanges: ----------diff:--- +++ @@ -44,7 +44,7 @@## Examples:#-# bind 192.168.1.100 10.0.0.1+#bind 0.0.0.0# bind 127.0.0.1 ::1## ~~~ WARNING ~~~ If the computer running Redis is directly exposed to the@@ -58,7 +58,7 @@# IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES# JUST COMMENT THE FOLLOWING LINE.# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-bind 127.0.0.1+bind 0.0.0.0# Protected mode is a layer of security protection, in order to avoid that# Redis instances left open on the internet are accessed and exploited.@@ -125,7 +125,7 @@# By default Redis does not run as a daemon. Use 'yes' if you need it.# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.-daemonize no+daemonize yes# If you run Redis from upstart or systemd, Redis can interact with your# supervision tree. Options:@@ -534,7 +534,7 @@# limit for maxmemory so that there is some free RAM on the system for slave# output buffers (but this is not needed if the policy is 'noeviction').#-# maxmemory <bytes>+maxmemory 1G# MAXMEMORY POLICY: how Redis will select what to remove when maxmemory# is reached. You can select among five behaviors:mode:0644user:root ----------ID: redis-master-serviceFunction: service.runningName: redisResult: TrueComment: Service redis has been enabled, and is runningStarted: 22:48:32.412154Duration: 453.972 msChanges: ----------redis:TrueSummary ------------ Succeeded: 3 (changed=3) Failed: 0 ------------ Total states run: 3 salt 'linux-node2*' state.sls redis-cluster.redis-master saltenv=prod

九，登陸node2節點查看redis服務已經成功啟動

[root@linux-node2 ~]# ps aux |grep redis redis 5147 0.3 0.3 142904 5808 ? Ssl 22:48 0:00 /usr/bin/redis-server 0.0.0.0:6379 root 5192 0.0 0.0 112648 976 pts/0 S+ 22:49 0:00 grep --color=auto redis [root@linux-node2 ~]#

總結

1.生產環境我們的狀態模塊可以在prod下面，在執行的時候需要設置環境saltenv=prod（使用top.sls不需要設置環境變量）

2.記得使用test=True先測試

3.提前查清楚軟件包和相關配置文件

4.當使用jinja模板管理時，可以不用登陸redis服務器就可以查看redis設置的最大內存

---

附 趙班長的 GitHub saltbook-code網址

https://github.com/unixhot/saltbook-code/tree/master

?

轉載于:https://www.cnblogs.com/xiewenming/p/7714764.html

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