https://github.com/glensc/monitoring-plugin-check_chef_stale

Alerting for stale nodes on Chef with Nagios/Icinga
https://github.com/glensc/monitoring-plugin-check_chef_stale

Last synced: about 2 months ago
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Alerting for stale nodes on Chef with Nagios/Icinga

• Host: GitHub
• URL: https://github.com/glensc/monitoring-plugin-check_chef_stale
• Owner: glensc
• Created: 2015-01-05T11:12:53.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2018-05-23T09:58:39.000Z (over 6 years ago)
• Last Synced: 2024-10-14T11:38:45.794Z (3 months ago)
• Language: Ruby
• Homepage:
• Size: 9.77 KB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
check_chef_stale

================

Alerting for stale nodes on Chef with Nagios/Icinga

## Installation ##

1. copy plugin `check_chef_stale.rb` to `/usr/lib/nagios/plugins`

2. copy command definition and service template definition `check_chef_stale.cfg`  to `/etc/nagios/plugins`.

3. create check definition like this:

```

define service {

    use                     chef_stale

    host_name               localhost

}       

```

**NOTE**: the paths may vary, depending on your Nagios/Icinga installation.

## Known Issues ##

```

chef/http/auth_credentials.rb:40:in `signature_headers': Cannot sign the request without a client name, check that :node_name is assigned (ArgumentError)

```

ensure `node_name` is defined in chef config. If you use [chef-client](https://github.com/chef-cookbooks/chef-client) cookbook, then it omits writing `node_name` to config if it's the default (`# Using default node name (fqdn)`). you can workaround this by creating `/etc/chef/client.d/nodename.rb`:

```ruby

# needed for check_chef_stale.rb

Chef::Config[:node_name] = 'nagios.fqdn.example.org'

```

----

```

[2016-02-03T13:49:00+02:00] WARN: Failed to read the private key /etc/chef/client.pem: #

```

ensure the files are accessible by user running the checks:

```sh

chmod a+r /etc/chef/client.d/nodename.rb

chown nagios /etc/chef/client.pem

```