cfengine

Sistema para centralizar configuraciones e instalacion de paquetes…

sudo aptitude update; sudo aptitude install puppetmaster -R

1. Archivos de configuracion

1.2 Manifiesto

/etc/puppet/manifests/site.pp

import 'nodes/*'
$puppetserver = 'puppet_server.domain.com'

1.2 Nodos

/etc/puppet/manifests/nodes/puppet_client_1.domain.com.pp

node 'puppet_client_1.domain.com'{
	include modulo1
	include modulo2
}

/etc/puppet/manifests/nodes/puppet_client_2.domain.com.pp

node 'puppet_client_2.domain.com'{
	include modulo1
	include modulo2
}

...

1.3 Modulos

sudo mkdir -p /etc/puppet/modules/modulo1/{files,templates,manifests}

/etc/puppet/modules/modulo1/files/modulo1.txt

Simplemente un archivo vacio

/etc/puppet/modules/modulo1/manifests/init.pp

class modulo1 {
	package { sudo:
		ensure => present,
	}
	file { "/tmp/modulo1.txt":
		owner => "root",
		group => "root",
		mode => 0440,
		source => "puppet:///modules/modulo1/modulo1.txt",
	}
}

En este ejemplo:

• Instalamos (si no lo esta) el paquete 'sudo'
• Copiamos el archivo puppet_server.domain.com:/etc/puppet/modules/modulo1/files/modulo1.txt a puppet_client_1.domain.com:/tmp/modulo1.txt. Notese que la URL es puppet:///modules/modulo1/modulo1.txt

2. Arrancar/reiniciar/parar servicio

• Habilitar debug

sudo cp /etc/default/puppetmaster /etc/default/puppetmaster.old
sudo vim /etc/default/puppetmaster

Y asegurarnos que la siguiente linea queda asi:

...
DAEMON_OPTS="--verbose"
...

Recargar configuracion (NO hace falta reiniciar):

sudo /etc/init.d/puppetmaster force-reload
Restarting puppet master.

Comprobar:

ps aux | grep puppetmaster
puppet   14997  0.5  7.2 136952 37012 ?        Ssl  09:59   0:00 /usr/bin/ruby1.8 /usr/bin/puppet master --verbose --masterport=8140

• Arrancar/parar/reiniciar

sudo /etc/init.d/puppetmaster start|stop|restart

* Recargar configuracion (NO hace falta reiniciar):

sudo /etc/init.d/puppetmaster force-reload

3. Logs

/var/log/puppet/masterhttp.log
/var/log/daemon.log

1. Instalar paquetes

sudo aptitude update; sudo aptitude install puppet -R

2. Configurar para que se puede arrancar como demonio

sudo cp /etc/default/puppet /etc/default/puppet.old; sudo vim /etc/default/puppet

Y dejar la siguiente linea asi:

...
START=yes
...

3. Arrancar el cliente:

OJO para que todo vaya bien probablemente el nodo deberia estar definido en el servidor previamente

sudo /etc/init.d/puppet restart
Restarting puppet agent.

4. Comprobar logs:

sudo tail -F /var/log/daemon.log

May 29 15:04:03 test5 puppet-master[1931]: Caught TERM; calling stop
May 29 15:04:05 test5 puppet-master[11049]: Reopening log files
May 29 15:04:05 test5 puppet-master[11049]: Starting Puppet master version 2.6.2
May 29 15:04:14 test5 puppet-agent[10852]: Caught TERM; calling stop
May 29 15:04:16 test5 puppet-agent[11081]: Reopening log files
May 29 15:04:16 test5 puppet-agent[11081]: Starting Puppet client version 2.6.2
May 29 15:04:17 test5 puppet-master[11049]: Compiled catalog for test5.jj.com in environment production in 0.21 seconds
May 29 15:04:17 test5 puppet-agent[11081]: (/Stage[main]/Test3/File[/tmp/test3.txt]/ensure) defined content as '{md5}d41d8cd98f00b204e9800998ecf8427e'
May 29 15:04:18 test5 puppet-agent[11081]: (/Stage[main]/Test3/Package[bzip2]/ensure) change from purged to present failed: Execution of '/usr/bin/apt-get -q -y -o DPkg::Options::=--force-confold install bzip2' returned 100: Reading package lists...#012Building dependency tree...#012Reading state information...#012Suggested packages:#012  bzip2-doc#012The following NEW packages will be installed:#012  bzip2#0120 upgraded, 1 newly installed, 0 to remove and 4 not upgraded.#012Need to get 50.5 kB of archives.#012After this operation, 164 kB of additional disk space will be used.#012WARNING: The following packages cannot be authenticated!#012  bzip2#012E: There are problems and -y was used without --force-yes
May 29 15:04:18 test5 puppet-agent[11081]: (/Stage[main]/Test4/File[/tmp/test4.txt]/ensure) defined content as '{md5}d41d8cd98f00b204e9800998ecf8427e'
May 29 15:04:18 test5 puppet-agent[11081]: (/Stage[main]/Test2/File[/tmp/test2.txt]/ensure) defined content as '{md5}d41d8cd98f00b204e9800998ecf8427e'
May 29 15:04:18 test5 puppet-agent[11081]: Finished catalog run in 1.04 seconds

Explicación

May 29 15:04:17 test5 puppet-agent[11081]: (/Stage[main]/Test3/File[/tmp/test3.txt]/ensure) defined content as '{md5}d41d8cd98f00b204e9800998ecf8427e'

Se ha ejecutado el manifiesto 'Test3'. Dependiendo de lo que incluya puede conllevar mas lineas, como por ejemplo instalar el paquete 'bzip2':

May 29 15:04:18 test5 puppet-agent[11081]: (/Stage[main]/Test3/Package[bzip2]/ensure) change from purged to present failed: Execution of '/usr/bin/apt-get -q -y -o DPkg::Options::=--force-confold install bzip2' returned 100: Reading package lists...#012Building dependency tree...#012Reading state information...#012Suggested packages:#012  bzip2-doc#012The following NEW packages will be installed:#012  bzip2#0120 upgraded, 1 newly installed, 0 to remove and 4 not upgraded.#012Need to get 50.5 kB of archives.#012After this operation, 164 kB of additional disk space will be used.#012WARNING: The following packages cannot be authenticated!#012  bzip2#012E: There are problems and -y was used without --force-yes

• Cliente

puppet agent --server=puppet_server.domain.com --no-daemonize --verbose --onetime

• Servidor

puppet master --verbose --no-daemonize

http://projects.puppetlabs.com/projects/1/wiki/Certificates_And_Security

Este paso es necesario para poder conectar un nodo al servidor. Una vez arrancados nodo y servidor:

1. (Servidor) Ver peticiones pendientes:

sudo puppet cert --list
dns.jj.com (CF:DD:8D:0F:82:31:E6:7A:7C:27:03:C1:3D:24:95:A2)

En los logs:

sudo tail -F /var/log/daemon.log
May 30 11:31:15 puppet puppet-master[1958]: dns.jj.com has a waiting certificate request
May 30 11:31:15 puppet puppet-master[1958]: Could not find certificate for 'dns.jj.com'

2. (Servidor) Firmarla:

sudo puppet cert --sign dns.jj.com
notice: Signed certificate request for dns.jj.com
notice: Removing file Puppet::SSL::CertificateRequest dns.jj.com at '/var/lib/puppet/ssl/ca/requests/dns.jj.com.pem'

sudo puppet cert --clean dns.jj.com

notice: Revoked certificate with serial 3
notice: Removing file Puppet::SSL::Certificate dns.jj.com at '/var/lib/puppet/ssl/ca/signed/dns.jj.com.pem'
notice: Removing file Puppet::SSL::Certificate dns.jj.com at '/var/lib/puppet/ssl/certs/dns.jj.com.pem'