I want to create a nagios_hostgroup if some hosts exists. For creating hosts in nagios I am using exported resources which I collect on the monitoring server.
How can I test that a exported nagios_host resource exists? I tried the following:
Nagios_host <<| |>>
if defined(Nagios_host['host_1']) and defined(Nagios_host['host_2']) {
nagios_hostgroup { 'database_servers':
alias => 'My Hostgroup',
members => 'host_1,host_2',
}
}
Any idea?
I am using debian squeeze with PostgreSQL 9.1 from backports. Puppet has version 2.7.14.
Unfortunatly the init script returns the wrong exit code for status. Therefore I wrote a custom status command to detect whether postgresql is running or not.
service { 'postgresql':
ensure => running,
enable => true,
hasstatus => false,
hasrestart => true,
status => "pg_lsclusters -h | awk 'BEGIN {rc=0} {if ($4 != \"online\") rc=3} END { exit rc }'",
provider => debian,
}
My command works like a charme, but puppet seems to have a problem. I always get notice: /Stage[main]/Postgresql/Service[postgresql]/ensure: ensure changed 'stopped' to 'running' although it is already running.
So tried the following:
service { 'postgresql':
ensure => running,
enable => true,
hasstatus => false,
hasrestart => true,
status => "exit 0",
provider => debian,
}
As I understood this custom status command, puppet should always think that postgresql is running. Nevertheless puppet tries to start postgresql - every time.
What is my fault? Or is it a bug in puppet?
I want to check whether the content of a variable is an odd number. But I need an integer for it.
$ip_array = split($ipaddress, '.')
$odd_ip = $ip_array[3] % 2
if $odd_ip == 1 {
notice("is odd")
}
Is there an easy way to convert a string to integer?
I am writing particular modules for the different roles of my servers. So I have a puppet and a puppet-dashboard-Module. The puppet module ensures that puppet is correct installed. The puppet-dashboard does the same for the puppet-dashboard, off course.
Both modules need the puppetlabs apt source (btw. I am using https://github.com/puppetlabs/puppet-apt). So I have the following defined resource in puppet and puppet-dashboard-module:
apt::source { "puppetlabs":
location => "http://apt.puppetlabs.com",
release => "squeeze",
repos => "main",
required_packages => true,
include_src => false,
key => "4BD6EC30",
key_server => "pgp.mit.edu",
}
Now I get the following error on my agent:
err: Could not retrieve catalog from remote server: Error 400 on SERVER: Duplicate declaration: Apt::Source[puppetlabs] is already declared in file /etc/puppet/modules/puppet/manifests/base.pp at line 27; cannot redeclare at /etc/puppet/modules/puppet-dashboard/manifests/init.pp:42 on node server123
The particular modules are independently of each other. Therefore I think it is correct to set the dependency of this apt source separately in each module.
A workaround would be to rename one source from puppetlabs to puppetlabs2 or sth. like that. But there must be another solution.
I am curious about your responses!
I am trying to setup an active/passive (2 nodes) Linux-HA cluster with corosync and pacemaker to hold a PostgreSQL-Database up and running. It works via DRBD and a service-ip. If node1 fails, node2 should take over. The same if PG runs on node2 and it fails. Everything works fine except the STONITH thing.
Between the nodes is an dedicated HA-connection (10.10.10.X), so I have the following interface configuration:
eth0 eth1 host
10.10.10.251 172.10.10.1 node1
10.10.10.252 172.10.10.2 node2
Stonith is enabled and I am testing with a ssh-agent to kill nodes.
crm configure property stonith-enabled=true
crm configure property stonith-action=poweroff
crm configure rsc_defaults resource-stickiness=100
crm configure property no-quorum-policy=ignore
crm configure primitive stonith_postgres stonith:external/ssh \
params hostlist="node1 node2"
crm configure clone fencing_postgres stonith_postgres
crm_mon -1 shows:
============
Last updated: Mon Mar 19 15:21:11 2012
Stack: openais
Current DC: node2 - partition with quorum
Version: 1.0.9-74392a28b7f31d7ddc86689598bd23114f58978b
2 Nodes configured, 2 expected votes
4 Resources configured.
============
Online: [ node2 node1 ]
Full list of resources:
Master/Slave Set: ms_drbd_postgres
Masters: [ node1 ]
Slaves: [ node2 ]
Resource Group: postgres
fs_postgres (ocf::heartbeat:Filesystem): Started node1
virtual_ip_postgres (ocf::heartbeat:IPaddr2): Started node1
postgresql (ocf::heartbeat:pgsql): Started node1
Clone Set: fencing_postgres
Started: [ node2 node1 ]
Problem is: when I cut the connection between the eth0-interfaces, it kills both nodes. I think it is a problem with the quorum, because there are just 2 nodes. But I don't want to add a 3rd node just for calculation of the right quorum.
Are there any ideas to solve this problem?