Monitoring iRODS Zones

Jason Coposky, Chief Technologist

The Zone vs. The Grid

Zone Introspection - izonereport

Configuration management for iRODS - 
    A new icommand which executes a new API call
    across all servers within a Zone

• maintain snapshots of Zone state over time
• a remote debugging tool
• allow for validation of Zone integrity
• can be used to dynamically deploy a zone in cloud infrastructure

 

 

 

A Zone Report

Creates validated json document which includes:

• iRODS version information
• Host system information
• Sanitized json configuration files
• Configuration files from /etc/irods - base64 encoded
• Listing of installed plugins

 

Schemas can be found at https://schemas.irods.org

Using izonereport

Run only as a 'rodsadmin' user with output to stdout:

 

izonereport > report.json 

 

Investigate with your favorite editor or the 'less' command

The iRODS Control Plane

A control channel which speaks directly to the iRODS Server -- allows for grid-wide operations

• graceful shutdown
• pause & resume
• grid status information

 

Accessed via a separate client command: irods-grid

 

Check out the March iRODS Development Update:

http://irods.org/post/irods-development-update-march-2015/

The irods-grid Command

irods-grid --help

usage: 'irods-grid action [option] target'

action: ( required ) status, pause, resume, shutdown

option: --force-after=seconds or --wait-forever

target: ( required ) --all, or --hosts=", , ..."

irods-grid status

Returns a status of the server, or servers requested in a validated json document which includes:

• Agent PIDs and their age
• XMessage server PID
• Rule Engine server PID
• iRODS Server PID
• Hostname of the server
• Server status

 

irods-grid status --all

irods-grid pause and resume

Pause - suspend all incoming connections while allowing existing connections to complete

 

irods-grid pause --all

 

Resume - allow incoming connections from new clients

 

irods-grid resume --all

irods-grid shutdown

Gracefully shutdown an iRODS server or servers  allowing existing client connections to complete

 

irods-grid shutdown --all

 

Option --force-after=seconds -
    kill any existing connections after N seconds

Option --wait-forever -

    do not kill existing connections, allowing them to finish

 

irods-grid shutdown --force-after=5 --all

irods-grid shutdown --wait-forever --all

Questions?