Process Agent
An agent that can be used to list running processes on remote machines.
Installation
Install the sys-proctable RubyGem on all your agent nodes, this Gem uses native extensions and so will need compilers:
NOTE: To install this gem you need to have a c++ compiler on your system
mcollective_agent_process::gem_dependencies:
"sys-proctable": "1.2.0"Add the agent and client:
mcollective::plugin_classes:
- mcollective_agent_processArchlinux
On Archlinux machines the following Hiera data will install the dependencies using native packages and you do not need compilers:
mcollective_agent_process::manage_gem_dependencies: false
mcollective_agent_process::package_dependencies:
ruby-sys-proctable: present
ruby-ffi: presentConfiguration
The Process client application can be configured to list only a subset of possible process field values. This can be configured in your client configuration file. Available fields are PID, USER, VSZ, COMMAND, TTY, RSS and STATE. Unconfigured the output will default to PID, USER, VSZ and COMMAND.
mcollective_agent_process::config:
fields: PID, COMMAND, TTY, STATEUsage
% mco process list ruby
* [ ============================================================> ] 2 / 2
node1.your.com
PID USER VSZ COMMAND
31187 root 137.465 MB ruby /usr/sbin/mcollectived --pid=/var/run/mcollectived.pid
node2.your.com
PID USER VSZ COMMAND
5202 root 120.793 MB /usr/bin/ruby /usr/bin/puppet agent
17348 root 112.105 MB ruby /usr/sbin/mcollectived --pid=/var/run/mcollectived.pid
Summary of The Process List:
Matched hosts: 2
Matched Processes: 3
Resident Size: 28.921 MB
Virtual Size: 370.363 MB
Finished processing 2 / 2 hosts in 134.67 ms
mco process list ruby --fields=pid,command,state
* [ ============================================================> ] 2 / 2
node1.your.com
PID COMMAND STATE
5202 /usr/bin/ruby /usr/bin/puppet agent S
17348 ruby /usr/sbin/mcollectived --pid=/var/run/mcollectived.pid R
node2.your.com
PID COMMAND STATE
31187 ruby /usr/sbin/mcollectived --pid=/var/run/mcollectived.pid R
Summary of The Process List:
Matched hosts: 2
Matched Processes: 3
Resident Size: 28.805 MB
Virtual Size: 369.863 MB
Finished processing 2 / 2 hosts in 96.65 ms
Data Plugin
The Process agent also supplies a data plugin which uses the sys-proctable Gem to check if there exists a process that matches a given pattern and can be used during discovery or any other place where the MCollective discovery language is used.
mco rpc rpcutil ping -S "process('ruby').exists=true"
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