Now that we can easily provide DHCP, DNS and TFTP and a debian image for all the nodes, we want to make it easy to maintain the cluster and setup user management. For maintaining packages and configuration etc we use Puppet on Debian. So awesome!
NOTE: remember to add "puppet" and "puppetmaster" in /etc/hosts on the server, so dnsmasq can provide DNS! Otherwise puppet agent will not know where to connect.
See the configuration of puppet here
Where NIS is setup as
/etc/rc.local
NOTE: remember to add "puppet" and "puppetmaster" in /etc/hosts on the server, so dnsmasq can provide DNS! Otherwise puppet agent will not know where to connect.
Setup Puppet on the master
Install the puppetmaster on the master nodeapt-get install puppetmaster
puppet module install puppetlabs-stdlib
See the configuration of puppet here
Where NIS is setup as
## User Authentication
# set NIS domain
file {"/etc/defaultdomain": source => "puppet:///modules/nodes/defaultdomain"} ->
# set yp server
file {"/etc/yp.conf": source => "puppet:///modules/nodes/yp.conf"} ->
# install NIS
package {"nis": ensure => installed} ->
# update passwd, shadow and gshadow
file_line {'update passwd': path => '/etc/passwd', line => '+::::::'} ->
file_line {'update shadow': path => '/etc/shadow', line => '+::::::::'} ->
file_line {'update group': path => '/etc/group', line => '+:::'} ->
file_line {'update gshadow': path => '/etc/gshadow', line => '+:::'}
## Network File System
package {"nfs-common": ensure => installed}
file_line {'nfs home':
path => '/etc/fstab',
line => '192.168.10.1:/home /home nfs rw,hard,intr 0 0',
require => Package["nfs-common"],
notify => Exec['nfs mount'],
}
file_line {'nfs opt':
path => '/etc/fstab',
line => '192.168.10.1:/opt /opt nfs rw,hard,intr 0 0',
require => Package["nfs-common"],
notify => Exec['nfs mount'],
}
exec {'nfs mount':
command => '/bin/mount -a',
path => '/usr/local/bin',
refreshonly => true,
}
puppet cert sign --all
Setup of the node
Puppet is installed via det preseed configuration by addingd-i pkgsel/include string openssh-server puppet facter
puppet agent --test --waitforcert 60
/etc/rc.local
#!/bin/bash
echo -n "Waiting for network."
while ! ip addr show | grep -F "inet 192.168.10" >> /dev/null
do
sleep 1
echo -n "."
done
# Run puppet for node
echo "Running puppet..."
echo "boot $(date)" >> /root/puppet-node.log
puppet agent -t | while read line; do
echo $line
echo $line >> /root/puppet-node.log
done
