puppet成长日记三 Service资源详细介绍及案例分析
一、系统环境
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
1
、puppet服务端
Release：RHEL6.
4
HOSTNAME: puppetserver.rsyslog.org
TCP/IP:
172.16
.
200.100
/
24
Packages：
puppet-server-
2.7
.
21
-
1
.el6.noarch
mcollective-client-
2.2
.
4
activemq-
5.5
.
0
2
、puppet节点
Release: RHEL5.
8
HOSTNAME: agent1.rsyslog.org
TCP/IP:
172.16
.
200.101
/
24
Packages:
puppet-
2.7
.
21
-
1
.el5
mcollective-
2.2
.
4
-
1
.el5
3
、puppet节点
Release: RHEL6.
4
HOSTNAME: agent3.rsyslog.org
TCP/IP:
172.16
.
200.103
/
24
Packages:
puppet-
2.7
.
21
-
1
.el6
mcollective-
2.2
.
4
-
1
.el6
|
二、资源介绍
1、实现功能
1.1 服务处于运行状态
1.2 服务能够在配置文件更改的情况下自动重启
2、支持参数
ensure => running|stopped 指定服务的目标状态
enable => true|false 指定服务是否开机自启动，并非对所有均有效
name => "service name",该资源的namevar, 服务的名字,通常就是在/etc/init.d/目录下的名字，默认与title相同
hasstatus => true|false, 指出管理脚本是否支持status参数,puppet用status参数来判断服务是否已经在运行了,如果不支持status参数,puppet利用查找运行进程列表里面是否有服务名来判断服务是否在运行.
hasrestart => true|false, 指出管理脚本是否支持restart参数,如果不支持,就用stop和start实现restart效果.
path => "/etc/rc.d/init.d", 启动脚本的搜索路径,可以用冒号分割多个路径,或者用数组指定
provider => base|daemontools|init, 默认为init
三、资源示例
1、示例一
1.1 实现功能
*要求系统启动后，sshd服务自动启动
*要求通过系统进程方式查看sshd服务运行状态
*要求服务关闭后能够自动重启
*要求配置文件被更改后服务能够执行restart动作
1.2 配置说明
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
class
ssh::service{
service { $ssh::params::ssh_service_name:
ensure => running,
hasstatus =>
false
,
hasrestart =>
true
,
enable =>
true
,
subscribe => Class[
"ssh::config"
],
}
}
或
class
ssh::service{
service { $ssh::params::ssh_service_name:
ensure => stopped,
hasstatus =>
false
,
hasrestart =>
true
,
enable =>
true
,
subscribe => Class[
"ssh::config"
],
}
}
|
1.3 客户端agent3测试
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
[root@agent3 ~]# puppet agent --test
info: Retrieving plugin
info: Loading facts
in
/
var
/lib/puppet/lib/facter/backup_date.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply1.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply3.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply2.rb
info: Caching catalog
for
agent3.rsyslog.org
info: Applying configuration version
'1378281102'
notice: Finished catalog run
in
0.38
seconds
[root@agent3 ~]#
[root@agent3 ~]# puppet agent --test
info: Retrieving plugin
info: Loading facts
in
/
var
/lib/puppet/lib/facter/backup_date.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply1.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply3.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply2.rb
info: Caching catalog
for
agent3.rsyslog.org
info: Applying configuration version
'1378280861'
notice: /Stage[main]/Ssh::Service/Service[sshd]/ensure: ensure changed
'running'
to
'stopped'
notice: Finished catalog run
in
0.54
seconds
|
测试结果：ensure => running, hasstatus => false,的情况下服务如果被关闭是起不来的，ensure => stopped, hasstatus => false,的情况下服务如果是运行的可以被关闭
建议：写SysV脚本放到/etc/init.d目录下来实现
2、示例二
2.1 实现功能
*要求服务配置文件被改动后，服务能够自动reload而不是自动restart（也可以通过exec资源实现）
2.2 配置说明
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
class
ssh::service{
service { $ssh::params::ssh_service_name:
ensure => running,
hasstatus =>
true
,
hasrestart =>
true
,
enable =>
true
,
subscribe => Class[
"ssh::config"
],
# provider => base|daemontools|init,
provider => init,
path =>
"/etc/rc.d/init.d"
,
restart =>
"/etc/rc.d/init.d/sshd reload"
,
start =>
"/etc/rc.d/init.d/sshd start"
,
stop =>
"/etc/rc.d/init.d/sshd stop"
,
}
}
class
ssh::config{
file { $ssh::params::ssh_service_config:
ensure => present,
owner =>
'root'
,
group =>
'root'
,
mode =>
0640
,
source =>
"puppet:///modules/ssh/etc/ssh/sshd_config"
,
# backup =>
".$backup_date.bak"
,
backup =>
'main'
,
require => Class[
"ssh::install"
],
notify => Class[
"ssh::service"
], #等同于
class
ssh::service中的subscribe
}
}
|
2.3 客户端agent3测试
可修改agent3端/etc/rc.d/init.d/sshd进行测试
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
|
case
"$1"
in
start)
start
;;
stop)
stop
;;
restart)
stop
start
echo
"sshd restart stop-start"
>>/tmp/sshd_status
;;
reload)
reload
echo
"sshd reload"
>>/tmp/sshd_status
;;
|
测试部分：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
[root@agent3 ~]# puppet agent --test
info: Retrieving plugin
info: Loading facts
in
/
var
/lib/puppet/lib/facter/backup_date.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply1.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply3.rb
info: Loading facts
in
/
var
/lib/puppet/lib/facter/my_apply2.rb
info: Caching catalog
for
agent3.rsyslog.org
info: Applying configuration version
'1378279503'
notice: /File[/etc/ssh/sshd_config]/content:
--- /etc/ssh/sshd_config
2013
-
09
-
04
15
:
27
:
22.177863699
+
0800
+++ /tmp/puppet-file20130904-
19622
-yy8g9o-
0
2013
-
09
-
04
15
:
29
:
47.791863671
+
0800
@@ -
5
,
8
+
5
,
6
@@
Protocol
2
#AddressFamily any
-# HostKey
for
protocol version
1
-
# Lifetime and size of ephemeral version
1
server key
#KeyRegenerationInterval 1h
#ServerKeyBits
768
info: FileBucket adding {md5}43f5b3f207a1b6fb35e3bd779b83c3f8
info: /File[/etc/ssh/sshd_config]: Filebucketed /etc/ssh/sshd_config to main
with
sum 43f5b3f207a1b6fb35e3bd779b83c3f8
notice: /File[/etc/ssh/sshd_config]/content: content changed
'{md5}43f5b3f207a1b6fb35e3bd779b83c3f8'
to
'{md5}df197ccd4957217616b62a82b890ed98'
info: /File[/etc/ssh/sshd_config]: Scheduling refresh of Class[Ssh::Service]
info: Class[Ssh::Config]: Scheduling refresh of Service[sshd]
info: Class[Ssh::Service]: Scheduling refresh of Service[sshd]
notice: /Service[sshd]: Triggered
'refresh'
from
2
events
notice: Finished catalog run
in
0.97
seconds
[root@agent3 ~]# cat /tmp/sshd_status
sshd reload #可以看到服务是reload而不是restart
[root@agent3 ~]#
|
本文转自凌激冰51CTO博客，原文链接：http://blog.51cto.com/dreamfire/1288883，如需转载请自行联系原作者
