saltstack1
Posted wadeson
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saltstack三种运行模式:
local本地、master/minion(类似于agent)、salt ssh
saltstack三大功能:
远程执行、配置管理、云管理
saltstack安装:1、使用官方进行yum安装 2、自建yum源进行安装
node1:
wget https://repo.saltstack.com/yum/redhat/salt-repo-2017.7-1.el6.noarch.rpm yum install salt-repo-2017.7-1.el6.noarch.rpm yum clean expire-cache yum install salt-master salt-minion
修改minion配置:/etc/salt/minion
master: 指向master节点ip
node2:
wget https://repo.saltstack.com/yum/redhat/salt-repo-2017.7-1.el6.noarch.rpm yum install salt-repo-2017.7-1.el6.noarch.rpm yum clean expire-cache yum install salt-minion
修改minion配置:/etc/salt/minion
查看下配置文件:
[root@node1 ~]# egrep -v "^#|^$" /etc/salt/master [root@node1 ~]# egrep -v "^#|^$" /etc/salt/minion master: 192.168.44.134 [root@node2 ~]# egrep -v "^#|^$" /etc/salt/minion master: 192.168.44.134
启动两节点上的服务:
[root@node1 ~]# /etc/init.d/salt-master start Starting salt-master daemon: [确定] [root@node1 ~]# /etc/init.d/salt-minion start Starting salt-minion:root:node1 daemon: OK [root@node1 ~]# netstat -tunlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1265/sshd tcp 0 0 0.0.0.0:4505 0.0.0.0:* LISTEN 2797/python2.7 tcp 0 0 0.0.0.0:4506 0.0.0.0:* LISTEN 2803/python2.7 [root@node2 ~]# /etc/init.d/salt-minion start Starting salt-minion:root:node2 daemon: OK
显示当前未连接上master的minion节点:
[root@node1 master]# tree . ├── master.pem ├── master.pub ├── minions ├── minions_autosign ├── minions_denied ├── minions_pre 还没有成为master的minion节点 │ ├── node1 │ └── node2 └── minions_rejected
[root@node1 master]# salt-key Accepted Keys: Denied Keys: Unaccepted Keys: 未同意的key有两个,node1和node2上的minion node1 node2 Rejected Keys:
[root@node1 master]# salt-key -a node* The following keys are going to be accepted: Unaccepted Keys: node1 node2 Proceed? [n/Y] Y Key for minion node1 accepted. Key for minion node2 accepted.
[root@node1 master]# tree . ├── master.pem ├── master.pub ├── minions │ ├── node1 │ └── node2 ├── minions_autosign ├── minions_denied ├── minions_pre └── minions_rejected salt-key: [root@node1 ~]# salt-key -L Accepted Keys: node1 node2 Denied Keys: Unaccepted Keys: Rejected Keys:
1、test.ping:类似于zabbix的agent的ping,test是一个模块,ping是模块中的方法
[root@node1 ~]# salt \'*\' test.ping node2: True node1: True
2、cmd.run:执行所有命令的模块
[root@node1 ~]# salt "*" cmd.run "uptime" node1: 12:04:22 up 2:32, 2 users, load average: 0.00, 0.00, 0.00 node2: 12:04:22 up 23:28, 1 user, load average: 0.07, 0.02, 0.00 [root@node1 ~]# salt "*" cmd.run "df -h" node2: Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_node2-lv_root 16G 3.5G 12G 24% / tmpfs 932M 12K 932M 1% /dev/shm /dev/sda1 485M 32M 429M 7% /boot node1: Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_node1-lv_root 16G 2.9G 12G 20% / tmpfs 932M 28K 932M 1% /dev/shm /dev/sda1 485M 32M 429M 7% /boot
[root@node1 salt]# salt \'node1\' grains.ls 列出所有的grains信息 node1: - SSDs - biosreleasedate - biosversion - cpu_flags - cpu_model - cpuarch - disks - dns
[root@node1 salt]# salt \'node1\' grains.item fqdn 获取某一个grains的item node1: ---------- fqdn: node1
或者使用get方法:
[root@node1 salt]# salt \'node1\' grains.get fqdn 获取某一个grains的值 node1: node1
显示minion端的操作系统:
[root@node1 salt]# salt \'node1\' grains.get os 获取某一个grains的值 node1: CentOS
在操作系统是CentOS上执行某命令:
[root@node1 salt]# salt -G os:CentOS cmd.run \'w\' -G:以grains类型作匹配 node1: 13:04:59 up 3:32, 2 users, load average: 0.00, 0.00, 0.00 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 192.168.44.1 11:42 0.00s 0.54s 0.35s /usr/bin/python root pts/1 192.168.44.1 11:49 28:30 0.04s 0.04s -bash node2: 13:04:59 up 1 day, 29 min, 1 user, load average: 0.00, 0.00, 0.00 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 192.168.44.1 11:42 28:36 0.08s 0.08s -bash
[root@node1 salt]# salt "*" grains.item roles 获取roles这个item的grains信息 node1: ---------- roles: - webserver - memcache node2: ---------- roles:
grains存在于minion端的配置文件中,可以使用配置grains进行将minion打一个标签,然后通过使用grains进行匹配,执行某操作:
[root@node1 salt]# egrep -v "^$|^#" /etc/salt/minion master: 192.168.44.134 grains: roles: - webserver - memcache 修改了配置文件,需要重启才能生效: [root@node1 salt]# /etc/init.d/salt-minion restart Stopping salt-minion:root:node1 daemon: OK Starting salt-minion:root:node1 daemon: OK 执行操作: [root@node1 salt]# salt -G "roles:memcache" cmd.run \'echo "hello node1"\' node1: hello node1 -G "roles:memcache":匹配刚刚在minion端配置文件中的roles定义
当然如果不想将grains配置写在minion的配置文件中,那么可以将grains配置单独写在/etc/salt/grains中:匹配某一个minion端执行某一个命令
[root@node1 salt]# ll /etc/salt/grains,该grains需要事先进行创建 比如: [root@node1 salt]# cat /etc/salt/grains roles: nginx [root@node1 salt]# /etc/init.d/salt-minion restart Stopping salt-minion:root:node1 daemon: OK Starting salt-minion:root:node1 daemon: OK [root@node1 salt]# salt -G "roles:nginx" cmd.run \'echo "node1 nginx"\' No minions matched the target. No command was sent, no jid was assigned. ERROR: No return received
报错原因:/etc/salt/grains 改配置文件中的key为roles与minion中的key值roles一致,导致冲突了,修改该key就可以解决
[root@node1 salt]# cat /etc/salt/grains web: nginx [root@node1 salt]# /etc/init.d/salt-minion restart Stopping salt-minion:root:node1 daemon: OK Starting salt-minion:root:node1 daemon: OK [root@node1 salt]# salt -G "web:nginx" cmd.run \'echo "node1 nginx"\' node1: node1 nginx
pillar:只有在master配置文件中才会用到设置pillar
默认pillar没有打开
[root@node1 salt]# salt "*" pillar.items node1: ---------- node2: ----------
需要在master配置文件中开启:
[root@node1 ~]# egrep -v "^#|^$" /etc/salt/master
file_roots:
base:
- /srv/salt
pillar_opts: True
[root@node1 ~]# /etc/init.d/salt-master restart
Stopping salt-master daemon: [确定]
Starting salt-master daemon: [确定]
[root@node1 ~]# salt "*" pillar.items
node2:
----------
master:
----------
__role:
master
allow_minion_key_revoke:
pillar支持环境,base环境或其他,pillar也有一个入口目录,入口文件top file,top file必须放在base环境下面,打开base环境设置:
[root@node1 ~]# egrep -v "^#|^$" /etc/salt/master pillar_roots: base: - /srv/pillar 创建该文件:[root@node1 ~]# mkdir /srv/pillar 重启master服务:[root@node1 ~]# /etc/init.d/salt-master restart
[root@node1 pillar]# cat apache.sls {% if grains[\'os\'] == \'CentOS\' %} apache: httpd {% elif grains[\'os\'] == \'Debian\' %} apache: apache2 {% endif %} [root@node1 pillar]# cat top.sls base: \'*\': - apache 将pillar的True再次修改为False,重启master,查看上面编写的sls文件是否已经生效 [root@node1 pillar]# salt \'*\' pillar.items node2: ---------- apache: httpd node1: ---------- apache: httpd 设置完了pillar,需要进行刷新才能够使用: [root@node1 pillar]# salt \'*\' saltutil.refresh_pillar node2: True node1: True [root@node1 pillar]# salt -I \'apache:httpd\' test.ping 刷新了才能调用pillar的设置,-I表示使用pillar匹配 node2: True node1: True
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