Detailed introduction and case analysis of file resources in puppet

First, the system environment

1. Puppet Service End

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 node

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 node

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

Ii. Introduction of resources

1, realize the function

1.1. supporting files and directories

1.2, set the file and directory owners and permissions

1.3, restore documents (including the contents of the document, permissions and owners)

1.4, clean up the directory and subdirectories

2, support parameters

2.1 Ensure => {Present|absent|directory|file|link}, specifying the target state of the file

=> present, check whether the file exists or not, the new

=> absent, check if the file exists, delete it

=> directory, specifies that this is a directory that does not exist to create

2.2 Owner|user => Root, user, can also use UID

2.3 Group => Puppet, Group of users, can also use GID

2.4 Mode => 0644, permission attributes, four-bit octal number

2.5 Source => "Puppet:///modules/ssh/etc/ssh/sshd_config" | Soure => "/etc/passwd" file gets the address, starts with the puppet:///and downloads from master, and the normal path is read locally by the agent

Note: "puppet://" is equivalent to the Modulepath value in the main configuration file Puppet.config

2.6 Path => "/ETC/POSTFIX/MAIN.CF", the full path to the file. The default is the same as title, not written

eg.

file {"MAIN.CF":

Path => "/ETC/POSTFIX/MAIN.CF",

2.7 Content => "Hello", |content => template ("Postfix/main.cf.erb"), the specific contents of the file, can also be generated by the Erb template, select this does not write resource source

2.8 Backup => ' main ', | Backup => ". $backup _date.bak", the previous version backup method before the node was updated; Backup => ' main ' needs to be implemented with resources Filebucket

2.9 recurse => ' {true|false|inf|remote} ' for a directory (TRUE) No (false) recursion (ensure => directory is valid)

There are three 2.10 puppet dependency resources, respectively Require,before,after

Require => class["Mysql::install"], | Require => package["Setup", where the current resource or class is dependent on the resource or class required, the resource or class required to execute successfully after executing its own resource or class

Before is executed before a resource

Package {"Openssh-server":

...

Before => file["/etc/ssh/sshd_config"],

}

After a resource is executed

file {"/etc/ssh/sshd_config":

...

After => package["Openssh-server"],

}