基于saltstack实现的配置集中化管理
作者:网络转载 发布时间:[ 2016/10/11 14:50:19 ] 推荐标签:软件测试管理 配置管理 saltstack
Saltstack是一个具备puppet与func功能为一身的集中化管理平台,saltstack基于python实现,功能十分强大,各模块融合度及复用性极高,官方极力推荐作为云计算平台的基础架构。轻松维护成千上万台服务器不是问题,现分享作者基于saltstack实现一个集中化的配置管理平台,以Nginx配置例子展开,涉及salt的grains、grains_module、pillar、States、jinja(template)等,本文适合有salt基础的同学阅读。
一、设备环境说明
有两组web业务服务器,组名分别为web1group与web2group,设备硬件配置、web根目录存在异常.
id groupsnode cpus webroot
SN2012-07-010 web1group 2 /www
SN2012-07-011 web1group 4 /www
SN2012-07-012 web1group 2 /www
SN2013-08-021 web2group 2 /data
SN2013-08-022 web2group 2 /data
id groupsnode cpus webroot
SN2012-07-010 web1group 2 /www
SN2012-07-011 web1group 4 /www
SN2012-07-012 web1group 2 /www
SN2013-08-021 web2group 2 /data
SN2013-08-022 web2group 2 /data
二、master配置说明
1、关键配置定义:
nodegroups:
web1group: 'L@SN2012-07-010,SN2012-07-011,SN2012-07-012'
web2group: 'L@SN2013-08-021,SN2013-08-022'
file_roots:
base:
- /srv/salt
pillar_roots:
base:
- /srv/pillar
nodegroups:
web1group: 'L@SN2012-07-010,SN2012-07-011,SN2012-07-012'
web2group: 'L@SN2013-08-021,SN2013-08-022'
file_roots:
base:
- /srv/salt
pillar_roots:
base:
- /srv/pillar
2、定义的文件树结构
三、自定义grains_module
1)#vi /srv/salt/_grains/nginx_config.py
import os,sys,commands
def NginxGrains():
'''
return Nginx config grains value
'''
grains = {}
max_open_file=65536
#Worker_info={'cpus2':'01 10','cpus4':'1000 0100 0010 0001','cpus8':'10000000 01000000 00100000 00010000 00001000 00000100 00000010 00000001'}
try:
getulimit=commands.getstatusoutput('source /etc/profile;ulimit -n')
except Exception,e:
pass
if getulimit[0]==0:
max_open_file=int(getulimit[1])
grains['max_open_file'] = max_open_file
return grains
import os,sys,commands
def NginxGrains():
'''
return Nginx config grains value
'''
grains = {}
max_open_file=65536
#Worker_info={'cpus2':'01 10','cpus4':'1000 0100 0010 0001','cpus8':'10000000 01000000 00100000 00010000 00001000 00000100 00000010 00000001'}
try:
getulimit=commands.getstatusoutput('source /etc/profile;ulimit -n')
except Exception,e:
pass
if getulimit[0]==0:
max_open_file=int(getulimit[1])
grains['max_open_file'] = max_open_file
return grains
2)同步grains模块
# salt '*' saltutil.sync_all
1
# salt '*' saltutil.sync_all
3)刷新模块(让minion编译模块)
# salt '*' sys.reload_modules
1
# salt '*' sys.reload_modules
4)验证max_open_file key的value
[root@SN2013-08-020 _grains]# salt '*' grains.item max_open_file
SN2013-08-022:
max_open_file: 1024
SN2013-08-021:
max_open_file: 1024
SN2012-07-011:
max_open_file: 1024
SN2012-07-012:
max_open_file: 1024
SN2012-07-010:
max_open_file: 1024
[root@SN2013-08-020 _grains]# salt '*' grains.item max_open_file
SN2013-08-022:
max_open_file: 1024
SN2013-08-021:
max_open_file: 1024
SN2012-07-011:
max_open_file: 1024
SN2012-07-012:
max_open_file: 1024
SN2012-07-010:
max_open_file: 1024
四、配置pillar
本例使用分组规则定义pillar,即不同分组引用各自的sls属性
1)定义入口top.sls
#vi /srv/pillar/top.sls
base:
web1group:
- match: nodegroup
- web1server
web2group:
- match: nodegroup
- web2server
base:
web1group:
- match: nodegroup
- web1server
web2group:
- match: nodegroup
- web2server
2)定义私有配置,本例只配置web_root的数据,当然可以根据不同需求进行定制,格式为python的字典形式,即"key:value"。
#vi /srv/pillar/web1server.sls
nginx:
root: /www
#vi /srv/pillar/web2server.sls
nginx:
root: /data
#vi /srv/pillar/web1server.sls
nginx:
root: /www
#vi /srv/pillar/web2server.sls
nginx:
root: /data
3)验证配置结果:
#salt 'SN2013-08-021' pillar.data nginx
SN2013-08-021:
----------
root:
/data
#salt 'SN2012-07-010' pillar.data nginx
SN2012-07-010:
----------
root:
/www
#salt 'SN2013-08-021' pillar.data nginx
SN2013-08-021:
----------
root:
/data
#salt 'SN2012-07-010' pillar.data nginx
SN2012-07-010:
----------
root:
/www
五、配置States
1)定义入口top.sls
#vi /srv/salt/top.sls
base:
'*':
- nginx
1
2
3
4
#vi /srv/salt/top.sls
base:
'*':
- nginx
2)定义nginx配置及重启服务SLS,其中salt://nginx/nginx.conf为配置模板文件位置。
#vi /srv/salt/nginx.sls
view plainprint?
nginx:
pkg:
- installed
file.managed:
- source: salt://nginx/nginx.conf
- name: /etc/nginx/nginx.conf
- user: root
- group: root
- mode: 644
- template: jinja
service.running:
- enable: True
- reload: True
- watch:
- file: /etc/nginx/nginx.conf
- pkg: nginx
#vi /srv/salt/nginx.sls
view plainprint?
nginx:
pkg:
- installed
file.managed:
- source: salt://nginx/nginx.conf
- name: /etc/nginx/nginx.conf
- user: root
- group: root
- mode: 644
- template: jinja
service.running:
- enable: True
- reload: True
- watch:
- file: /etc/nginx/nginx.conf
- pkg: nginx
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