ccin2p3-conserver

Table of Contents

1. Overview
2. Module Description
3. Setup
   • What conserver affects
   • Setup requirements
   • Beginning with conserver
4. Usage
5. Reference
6. Limitations
7. Development

Overview

This puppet module will manage the conserver application. From the website: Conserver is an application that allows multiple users to watch a serial console at the same time.

Module Description

This module will manage the conserver application by installing required packages, setting up the configuration file, and enabling the service.

Setup

What conserver affects

This module will affect the following resources, some of which are optional.

• conserver master configuration file
• console configuration file
• conserver init defaults file (optional)
• conserver and console package installation (optional)
• conserver service

Setup Requirements

• puppetlabs/concat
• puppetlabs/stdlib
• puppet > 3.5.0

Beginning with conserver

Usage

Simple

include ::conserver
conserver::config::console { 'foo':
  'config' => {
    'type' => 'exec',
    'rw'   => '*',
    'exec' => 'ssh foo',
    'master' => 'conserver'
  }
}

Automatic master

class { conserver:
  masters => [ 'localhost', '8.8.8.8', '127.0.0.1' ],
}
 # automatic master
conserver::config::console { 'foo':
  'config' => {
    'type' => 'exec',
    'rw'   => '*',
    'exec' => 'ssh foo',
  }
}

Hiera

class { conserver:
  use_hiera => true
}

conserver::config::console:
  bar:
    config:
      type: device
      device: /dev/ttyUSB0

Reference

Class conserver

Parameters

List of parameters in the form: <param_name> (Type/Default_value). If Default_value is auto: automatic based on osfamily. If Default_value is absent: no default value, and parameter is mandatory.

• server_package_name (String/auto) overrides conserver package name to install
• client_package_name (String/auto) overrides console package name to install
• service_name (String/auto) overrides service name to manage
• confdir (String/auto) overrides configuration directory path
• masters (Array/[]) list of conserver masters in your site. This will feed the defined consoles where the master name is omitted
• reload_cmd (String/auto) overrides service reload command. Reloads are done when the conserver config file changed
• restart_cmd (String/auto) overrides service restart command. Restarts are done when the init config file changes.
• enable_client (Bool/true) controls wether conserver is enabled
• enable_server (Bool/true) controls wether console is enabled
• manage_package (Bool/true) controls wether packages shall be managed
• manage_init_defaults (Bool/true) controls wether sysvinit default files shall be managed
• server_init_config_file (String/auto) overrides sysvinit configfile path
• server_init_config_hash (Hash/{}) will be merged to OS default. Add any key/values here that may be used by the startup script
• check_config_syntax (Bool/true) controls wether conserver syntax shall be checked before deployment
• use_hiera (Bool/true) controls wether the module should harvest hiera for config items

Define conserver::config::config

Conserver config block.

Parameters

• config (Hash) See conserver.cf manpage
• order (String/'25') Position in config file

Example

conserver::config::config {'*':
  config => {
    'primaryport' => 33000,
    'unifiedlog'  => '/var/log/conserver/console.log',
    'logfile'     => '/var/log/conserver/server.log',
  }
}

Define conserver::config::access

Conserver access block. See conserver.cf manpage.

Parameters

• trust (Array) List of trusted masters
• limited (Array) List of masters with limited access
• rejected (Array) List of masters with no access
• order (String/'15') Position in config file

Example

conserver::config::access { '*':
  trust => [ 'conserv01', 'conserv02' ]
}

Define conserver::config::break

Conserver break block. See conserver.cf manpage.

Parameters

• string (String)
• delay (Int)
• order (String/'02') Position in config file

Example

conserver::config::break { '1':
  string => '\d\035send brk\n'
}

Define conserver::config::console

Conserver block to define a console.

Parameters

• config (Hash)
• order (String/'45') Position in config file

Example

conserver::config::console { 'node73':
  config => {
    master  => 'conserv01',
    include => 'cyclades_sp16',
    device  => '/dev/ttyC0'
  }
}

Define conserver::config::default

Conserver default block. See conserver.cf manpage.

Parameters

• config (Hash)
• order (String/'25') Position in config file

Examples

conserver::config::default { 'cyclades_sp16':
  config => {
    type   => 'device',
    parity => 'none',
    baud   => 9600,
    break  => 3,
  }
}

Define conserver::config::group

Conserver group block. Defines user groups.

See conserver.cf manpage.

Parameters

• users (Array) list of users belonging to group
• order (String/'05') Position in config file

Example

conserver::config:: { 'devops':
  users => [ 'john', 'sarah' ]
}

Define conserver::config::custom

Custom conserver blocks, for which there is no specific conserver::config::* define. As parameter you can either use raw content (e.g. for comments), or template and config. For convenience, the module ships server/custom.erb which will generate key-values.

Parameters

• content (String/$title) Raw block content.
• template (String/undef) Path to template which will be used to build block
• config (Hash) Hash content. Used in template
• order (String/'01') Position in config file

Example

conserver::config::custom { '# this is a comment in conserver.cf': }
conserver::config::custom { 'unsupportedblock foo':
  template => 'conserver/server/custom.erb',
  config  => {
    'foo' => 'bar'
  }
}

Define conserver::config::client

Client configuration block (for configuring console e.g. /etc/console.cf).

Parameters

• config (Hash)
• order (String/'01') Position in config file

Example

conserver::config::client {'*':
  config => {
    'master' => 'conserv02',
    'port'   => 33000,
  }
}

Limitations

Only tested on RHEL6 and RHEL7

Development

Issues and patches on github