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plugin-linux-agent-installer.md

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layout bt_wiki
title Linux Agent Installer Plugin
category Plugins
publish true
abstract Cloudify Linux Agent Installer description and configuration
pageord 500
celery_link http://www.celeryproject.org/
autoscale_link http://docs.celeryproject.org/en/latest/userguide/workers.html#autoscaling

{%summary%} The Cloudify Linux Agent Installer plugin is used to install agents on host nodes. The installation process is done using SSH from the management machine into the agent machine. {%endsummary%}

Description

The agent installation process includes installing Celery on the agent machine, installing plugins required on this host and starting a celery worker.

Configuration

The agent configuration is located under the cloudify_agent property of a host node.

{% highlight yaml %} blueprint: name: example nodes: - name: example_host type: cloudify.types.host properties: cloudify_agent: user: # no default value (globally configurable in bootstrap configuration) key: # no default value (globally configurable in bootstrap configuration) port: 22 # default value (from bootstrap configuration) min_workers: 2 # default value (from bootstrap configuration) max_workers: 5 # default value (from bootstrap configuration) wait_started_timeout: 15 # default value wait_started_interval: 1 # default value disable_requiretty: true # default value {%endhighlight%}

  • user SSH username
  • key Path to SSH key file on the management machine
  • port SSH port (default: 22)
  • min_workers Minimum number of agent workers (default: 2. See Auto Scaling)
  • max_workers Maximum number of agent workers (default: 5. See Auto Scaling)
  • wait_started_timeout How many seconds should be waited for the agent to be started after installation before raising an error (default: 15)
  • wait_started_interval How many seconds to wait between each probe of the current agent status (default: 1. used in conjunction with wait_started timeout)
  • disable_requiretty Disables the requiretty setting in the sudoers file (default: true)

Bundled Plugins & Libraries

The following plugins and libraries are bundled within every Cloudify linux agent:

Libraries

  • cloudify-plugins-common (required by every plugin)
  • cloudify-rest-client

Plugins

  • cloudify-agent-installer-plugin
  • cloudify-plugin-installer-plugin
  • cloudify-windows-agent-installer-plugin