saltstack之grains详解
Posted 西红柿圆
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什么是grains:
是salt的一个组件,负责minion第一次启动的时候采集的静态数据,可以用在salt的模块和其他组件中。每次的minion启动(重启)的时候都会采集。
应用场景:
1.在state中使用 用于配置管理模块
2.在target中使用,用来匹配minion,例如匹配操作系统使用-G的选项
3.用于信息查询,grains保存收集到的客户端的详细信息
查看grains:
# salt \'node23.com\' grains.ls #查看grains的名称 salt \'node23.com\' grains.items 查看名称和值
node23.com:
- SSDs
- biosreleasedate
- biosversion
- cpu_flags
- cpu_model
- cpuarch
- domain
- fqdn
- fqdn_ip4
- fqdn_ip6
- gpus
- host
- hwaddr_interfaces
- id
- init
- ip4_interfaces
- ip6_interfaces
- ip_interfaces
- ipv4
- ipv6
- kernel
- kernelrelease
- locale_info
- localhost
- lsb_distrib_codename
- lsb_distrib_id
- lsb_distrib_release
- machine_id
- manufacturer
- master
- mdadm
- mem_total
- nodename
- num_cpus
- num_gpus
- os
- os_family
- osarch
- oscodename
- osfinger
- osfullname
- osmajorrelease
- osrelease
- osrelease_info
- path
- productname
- ps
- pythonexecutable
- pythonpath
- pythonversion
- saltpath
- saltversion
- saltversioninfo
- selinux
- serialnumber
- server_id
- shell
- virtual
- zmqversion
使用grains:
1.在命令行中使用:
# salt -G \'os:CentOS\' test.ping
node23.com:
True
node24.com:
True
# salt -G \'ip_interfaces:eth0:192.168.0.*\' cmd.run \'w\'
node23.com:
19:00:46 up 3 days, 12:21, 4 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty1 - Sat10 3days 0.08s 0.08s -bash
root pts/0 192.168.0.113 18:56 1.00s 0.48s 0.42s /usr/bin/python
root pts/1 192.168.0.113 17:33 1:26m 0.04s 0.04s -bash
root pts/3 192.168.0.113 16:30 1:30m 0.54s 0.54s -bash
node24.com:
02:44:30 up 3 days, 8:34, 5 users, load average: 0.31, 0.08, 0.02
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty1 :0 Sat18 3days 7.15s 7.15s /usr/bin/Xorg :
root pts/0 :0.0 Sat18 3days 0.03s 0.03s /bin/bash
root pts/1 192.168.0.113 00:14 2:18m 0.13s 0.13s -bash
root pts/3 192.168.0.113 01:17 1:26m 0.03s 0.03s -bash
root pts/4 192.168.0.113 02:39 4:33 0.04s 0.04s -bash
2.在SLS中使用grains
base:
\'os:CentOS\':
- match: grain
- nginx
自定义grains
- minon文件中定义
vim /etc/salt/minion
grains:
web:
- nginx
/etc/init.d/salt-minion restart
# salt \'node23.com\' grains.get web
node23.com:
- nginx
2.grains文件中定义
vim /etc/salt/grains
bash: shell
OS: centos6.6
/etc/init.d/salt-minion restart
# salt \'node23.com\' grains.get OS
node23.com:
centos6.6
# salt \'node23.com\' grains.get bash
node23.com:
shell
推荐使用自定义grains
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