Puppet Infrastructure SOP

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This initial run will send a certificate request over to the puppet master.  once you have signed the new request (below) go back to the node and re-run the command.
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This initial run will send a certificate request over to the puppet master.  once you have signed the new request (below) go back to the node and re-run the command.  It may be necessary to run puppet several times on the first run to make sure that all of the dependencies get worked out.
  
 
=== Signing new ca request ===
 
=== Signing new ca request ===

Revision as of 17:31, 14 February 2009

Contents

Puppet SOP

Introduction

This page is intended for people who are already familiar with puppet. It is specific to our Fedora Infrastructure though the techniques are general enough to apply to other environments.

VCS/GIT

All of our configs and manifests are stored in GIT. We also have a private GIT that stores keys, certificates and other files (like sudoers) that shouldn't be messed with or altered but by a select few people.

The following commands will check out all GIT configs (from puppet1.fedora.phx.redhat.com)

git clone /git/puppet

or if you've got a checkout already:

cd puppet
git pull

Altering config files

The config files need to be edited, saved and installed. The following example assumes everything is checked out already and is to alter a proxy file on the webserver.

cd configs
vi web/fedoraproject.org/wiki.conf
git commit -a

Once you have all of your changes in and ready run:

git push


Puppet Infrastructure SOP/code

Adding new files

Adding new files consists of two things, adding the file and adding the manifest. Adding the config file is similar to the alteration section above. Just add the file to the appropriate directory, cvs add filename. Then commit and run 'make install'

Once the config file is in place move to your manifests directory and add the file to whichever manifest seems appropriate. If none do, add a new manifest. All of our manifests exist in the services directory. From there the servergroups manifests group the services into logical machines. The nodes file then includes those servergroups for submission to the servers.

Adding new node

Adding new hosts of an already known type is easy. The following example is for a builder. First check out the manifests module. Then add a new node file (see other node files for an example:)

For example

node xenbuilder3{
include build
}

The "include build" line refers to a 'build' group in the servergroups directory.

Node Access

If this is a new node coming from a previously un-used IP address. We need to give puppet, infrastructure and the accounts system access to the node:

git clone /git/puppet
cd puppet/manifests
vi fileserver.conf
git commit -a
cd ../configs
vi web/infrastructure.fedoraproject.org/infrastructure.conf
vi web/exclude.conf.erb
git push

On the node

Do a manual run of puppet:

puppetd -t --server=puppet

This initial run will send a certificate request over to the puppet master. once you have signed the new request (below) go back to the node and re-run the command. It may be necessary to run puppet several times on the first run to make sure that all of the dependencies get worked out.

Signing new ca request

If using one of our official kickstart scripts a server will automatically request a cert from puppet1. To view a list just run (as root)

puppetca --list

followed by a sign of whatever hostname needs to be signed:

puppetca --sign xenbuilder3.fedora.phx.redhat.com

Finalizing

Sometimes a new node needs to have puppet restarted in order to connect correctly after its certificate has been approved. Simply log in and run 'service puppet restart'

Remove Server

To remove a server first clean the cert:

puppetca -c xenbuilderx.fedora.phx.redhat.com

Then remove its node file.

Regenerate cert request

To regenerate the cert request (for example when re-kicking a box) first remove the old cert

puppetca -c xenbuilderx.fedora.phx.redhat.com

then restart puppet on the remote node. Then sign the certificate as mentioned above with --sign