ocf_heartbeat_rkt man page

ocf_heartbeat_rkt ā€” rkt container resource agent.

Synopsis

rkt [start | stop | monitor | meta-data | validate-all]

Description

The rkt HA resource agent creates and launches a container based off a supplied image. Containers managed by this agent are both created and removed upon the agent's start and stop actions.

Supported Parameters

image

The image to base this container off of.

(required, string, no default)

name

The name to give the created container. By default this will be that resource's instance name.

(optional, string, no default)

allow_pull

Allow the image to be pulled from the configured registry when the image does not exist locally. NOTE, this can drastically increase the time required to start the container if the image repository is pulled over the network.

(optional, boolean, no default)

run_opts

Add options to be appended to the 'rkt run' command which is used when creating the container during the start action. This option allows users to do things such as setting a custom entry point and injecting environment variables into the newly created container.

NOTE: Do not explicitly specify the --name argument in the run_opts. This agent will set --name using either the resource's instance or the name provided in the 'name' argument of this agent.

(optional, string, no default)

run_cmd

Specify a command to launch within the container once it has initialized.

(optional, string, no default)

mount_points

A comma separated list of directories that the container is expecting to use. The agent will ensure they exist by running 'mkdir -p'

(optional, string, no default)

monitor_cmd

Specify the full path of a command to launch within the container to check the health of the container. This command must return 0 to indicate that the container is healthy. A non-zero return code will indicate that the container has failed and should be recovered.

Note: Using this method for monitoring processes inside a container is not recommended, as rkt tries to track processes running inside the container and does not deal well with many short-lived processes being spawned. Ensure that your container monitors its own processes and terminates on fatal error rather than invoking a command from the outside.

(optional, string, no default)

force_kill

Kill a container immediately rather than waiting for it to gracefully shutdown

(optional, boolean, no default)

Supported Actions

This resource agent supports the following actions (operations):

start

Starts the resource. Suggested minimum timeout: 90s.

stop

Stops the resource. Suggested minimum timeout: 90s.

monitor

Performs a detailed status check. Suggested minimum timeout: 30s. Suggested interval: 30s.

meta-data

Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

validate-all

Performs a validation of the resource configuration. Suggested minimum timeout: 30s.

Example CRM Shell

The following is an example configuration for a rkt resource using the crm(8) shell:

primitive p_rkt ocf:heartbeat:rkt \
  params \
    image=string \
  op monitor timeout="30s" interval="30s" depth="0" 

Example PCS

The following is an example configuration for a rkt resource using pcs(8)

pcs resource create p_rkt ocf:heartbeat:rkt \
  image=string \
  op monitor timeout="30s" interval="30s" depth="0" 

See Also

http://clusterlabs.org/

Author

ClusterLabs contributors (see the resource agent source for information about individual authors)

Info

07/26/2019 resource-agents UNKNOWN OCF resource agents