This is most likely an anti-pattern, but I'd like to know nonetheless:
I need to extract a tgz which is in puppet and then move the contents somewhere else. Is it possible, in a puppet exec { }, to refer to the file where it is stored on disk?
For example, puppet is available at /usr/local/puppet, and the tgz file I need it in /usr/local/puppet/modules/components/files/file.tgz. In the exec { } can I do something like command => "/bin/cp $modules/components/files/file.tgz /somewhere_else" ? Or do I have to declare a file { source => "..." } block first?
Both approaches are correct if you run puppet with puppet apply.
In master-agent architecture using exec to copy file probably will not work at all.
In my opinion using file resource is more "puppet-like" but is has one significant drawback.
You can use:
file { '/some_path/somewhere_else':
source => '/usr/local/puppet/modules/components/files/file.tgz',
}
This will create file /some_path/somewhere_else with the same content as /usr/local/puppet/modules/components/files/file.tgz (it will make a copy of the original file).
But if /some_path doesn't not exist in the file system, the command will fail.
If you are working with tgz files you can also consider using some of the archive puppet modules e.g gini.
UPDATE:
I can propose two approaches:
Use puppet file server to serve files (or define module path for old puppet versions). Next just use it e.g:
file { '/some_path/somewhere_else':
source => "puppet:///modules/components/file.tgz',
}
Define custom facter fact 1, 2 that points path in your filesystem containing required files. E.g:
file { '/some_path/somewhere_else':
source => "${::my_custom_fact}/some_path/file.tgz',
}
I do not think that any of the core facts might be useful for you.
Related
I am trying to create a puppet manifest using inifile. This would be for a configuration file where I need to have the following format.
[safe]
directory = /home/foo
directory = /home/test
directory = /home/something
I know that there is a way to use directory1, and directory2 but I was wondering if there is a way to do it without changing the directory since it needs that specific attribute. This implementation is meant for puppet manifest.
Also, I was thinking puppetlabs/inifile module but if there is another option to achieve this would be great too.
Thanks for the help in advance
So far, I have an implementation like:
ini_setting { 'procedure cache size':
ensure => present,
path => '/var/lib/somethning/test.config',
section => 'safe',
setting => 'directory',
value => '/home/foo',
indent_char => "\t",
}
This is for each directory. The purpose for this implementation is to address the new git configuration for safe.repository in the recent update. My understanding is that for multiple directories, it adds a new value as directory = <directory> I don't believe that it likes directories separate by commas.
First I thought about file_line, but this is not idempotent for multi-line settings (you get problems when you run again). You can try:
Sample puppet code dir.pp
$safe_directories="directory = /home/foo
directory = /home/test
directory = /home/something"
notice "Testing\n${safe_directories}"
file { "/tmp/result.ini":
ensure => present,
content => template('/tmp/layout.erb'),
}
notice "Check /tmp/result.ini"
Sample template /tmp/layout.erb
[unsafe]
directory=/unsafe
[safe]
<%=#safe_directories%>
otherfield=secure
[header3]
nothing = here
Now run command from commandline
puppet apply dir.pp
I am working a Puppet manifest that configures a router in the equipment that I support. The router runs pretty much plain vanilla Debian 8 or 9.
The problem is in the way the SSD on the router is partitioned.I am not able to change the partitioning, so have to work around the fact that the root file system is small. I have found a solution that I am trying to implement in Puppet but my first attempt doesn't feel right to me so I thought I would ask the community.
I have been and am reading the Puppet docs. Unfortunately I don't have my router hand to play with today so I am unable to test my current solution.
My issue is that by df -H the root file system is at 95% capacity and puppet is failing complaining about not enough space. Because of quirky decisions made a long time ago by others, the /opt/ file system is 5 times the size of / and is at 10% usage.
So my solution, tested manually, is to move /var/cache/apt/archives/ to /opt/apt-archives and then create a symlink using:
ln -s /opt/apt-archives /var/cache/apt/archives
That works and allows the puppet run to finish without errors.
My challenge is to implement this operation in a Puppet class
class bh::profiles::move_files {
$source_dir = '/var/cache/apt/archives'
$target_dir = '/opt/apt-cache'
file { $targetDir :
ensure => 'directory',
source => "file://${source_dir}",
recurse => true,
before => File[$source_dir]
}
file { $source_dir :
ensure => 'absent',
purge => true,
resurse => true,
force => true,
ensure => link,
target => "file://${target_dir}"
}
}
It just doesn't feel right to have ensure repeated in one file resource. And based on what I understand of creating links in puppet I would need the same name for the file resource that deletes the archives directory and the one that creates the link.
What am I missing?
Use exec:
exec { 'Link /var/cache/apt/archives':
command => 'mv /var/cache/apt/archives /opt/apt-archives
ln -s /opt/apt-archives /var/cache/apt/archives',
path => '/bin',
unless => 'test -L /var/cache/apt/archives',
}
Note that Puppet was not really designed to solve automation problems like this one, although using Exec it is possible to do most things anyway.
Your solution sounds like a work-around and it is therefore totally ok to implement a work-around using Exec. I would say, just make sure you add some comments explaining why you had to do something like this.
For example I have a symlink /etc/foo/folder11/some/link.txt which points to etc/foo/folder12/some/file.txt.
And in puppet I have the following
ensure_resource('file', "/etc/bar/link.txt", {
owner => $someUser,
mode => '0444',
source => `/etc/foo/folder11/some/link.txt`,
})
After puppet run it creates a broken symlink /etc/bar/link.txt which points to ../../folder12/some/file.txt.
Why does it create so strange symlink? And how can I force puppet to create /etc/foo/link.txt symlink which should point to the same file to which /etc/foo/folder11/some/link.txt points to ?
Note that I don't use ensure => link because sometimes /etc/foo/folder11/some/link.txt may be a regular file and in this case /etc/bar/link.txt should be a copy of this file.
As it turned out the problem was in /etc/foo/folder11/some/link.txt which was a relative symlink. I changed it to be absolute and now it works fine.
I'm running a .each iteration with Puppet:
$extensions_list = ["RT::Extension::ActivityReports",
"RT::Extension::JSGantt",
]
$extensions_list.each |$extls| {
cpan { $extls:
ensure => present,
require => Class['::cpan'],
}
}
As you can see I'm just installing two Perl modules with a cpan module from Puppet Forge. This part works just as expected.
What I would like to happen is each time a new Perl module is installed in this way it will be added to added to the config line of RT (Request Tracker). That file lives here:
/opt/rt4/etc/RT_SiteConfig.pm
and the format of the line is:
Plugins('RT::MODULE::ONE RT::MODULE::TWO');
So, in the end I would like it to look like this:
Plugins('RT::Extension::ActivityReports RT::Extension::JSGantt');
Having Puppet add each new module in turn to that line as they are installed. As in if I decided to install RT::Authen::ExternalAuth a month from now I can just add it to my above iteration and after Puppet runs this:
Plugins('RT::Extension::ActivityReports RT::Extension::JSGantt');
would become this:
Plugins('RT::Extension::ActivityReports RT::Extension::JSGantt RT::Authen::ExternalAuth');
With no other intervention on my part then to add it to the iteration statement.
Assuming that you don't have any other Puppet code managing /opt/rt4/etc/RT_SiteConfig.pm, then you have a few options for making sure that you have the correct Plugins line in that file.
If you only want to manage just that one line then I would recommend using join and a file_line resource from stdlib.
For example:
include stdlib
$ext_string = join($extensions_list, ' ')
file_line { 'rt extensions':
ensure => present,
path => '/opt/rt4/etc/RT_SiteConfig.pm',
line => "Plugins('${ext_string}');",
match => '^\s*Plugins\(',
}
This will add a line containing the list of plugins and will replace any existing plugin line.
If there are several settings that you want to manage then it might make sense to just templatize the entire file. In that case you could simply have the line
Plugins('<%= #extensions_list.join(' ') %>');
in your template.
I'm installing a package from a module (Nginx in this specific case) and would like to include a configuration file from outside of the module, i.e. from a top level files directory parallel to the top level manifests directory. I don't see any way to source the file though without including it in a module or in my current Vagrant environment referring to the absolute local path.
Does Puppet allow for sourcing files from outside of modules as described in the documentation?
if I understand your question correctly, you can.
In your module a simple code like this
file { '/path/to/file':
ensure => present,
source => [
"puppet:///files/${fqdn}/path/to/file",
"puppet:///files/${hostgroup}/path/to/file",
"puppet:///files/${domain}/path/to/file",
"puppet:///files/global/path/to/file",
],
}
will do the job. The /path/to/file will be sourced using a file located in the "files" Puppet share.
(in the example above, it search in 4 different locations).
update maybe you're talking about a directory to store files which is not shared by Puppet fileserver (look at http://docs.puppetlabs.com/guides/file_serving.html), and in this case you can't i think, Vagrant or not, but you can add it to your Puppet fileserver to do it. I thinks it's the best (and maybe only) way to do it.
If you have a number of Vagrant VMs you can simply store files within your Vagrant project directory (containing your VagrantFile).
This directory is usually available to all VMs as /vagrant within the VM on creation.
If you want other directories on your computer to be available to your VMs just add the following to your VagrantFile
# see http://docs.vagrantup.com/v1/docs/config/vm/share_folder.html
config.vm.share_folder "v-packages", "/vagrant_packages", "../../dpkg"
Then to use the files within puppet you can simply treat them as local files to the VM
# bad example, bub basically use 'source => 'file:///vagrant/foo/bar'
file { '/opt/cassandra':
ensure => directory,
replace => true,
purge => true,
recurse => true,
source => 'file:///vagrant/conf/dist/apache-cassandra-1.2.0',
}
This is probably only wise to do if you only using local puppet manifests/modules.
Probably too late to help bennylope, but for others who happen across this question, as I did before figuring it out for myself ...
Include stuff like this in your Vagrantfile ...
GUEST_PROVISIONER_CONFDIR = "/example/destination/path"
HOST_PROVISIONER_CONFDIR = "/example/source/path"
config.vm.synced_folder HOST_PROVISIONER_CONFIDIR, GUEST_PROVISIONER_CONFDIR
puppet.options = "--fileserverconfig='#{GUEST_PROVISIONER_CONFDIR}/fileserver.conf'"
Then make sure /example/source/path contains the referenced fileserver.conf file. It should look something like ...
[foo]
path /example/destination/path
allow *
Now, assuming example-file.txt exists in /example/source/path, the following will work in your manifests:
source => "puppet:///foo/example-file.txt",
See:
Puppet configuration reference entry for fileserverconfig
Serving Files From Custom Mount Points