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UNIX for Beginners Questions & Answers
Cluster a custom application
Post 303034528 by Peasant on Sunday 28th of April 2019 02:52:31 AM
04-28-2019
Moderator
Any systemd or init script can be implemented in linux cluster as a resource.
So, you will need to write one of those, it should be fairly simple reading the docs.
Be sure to use resource group, as resources in it will follow constraint order, start from first defined to last, stop from last defined to first.
But, applications are mostly load balanced not clustered in classic way, as stomp mentioned.
Can you elaborate more on your application receiving data on any port, does it listen on thousands of ports
Using opensource with haproxy and keepalived one can do great things with backend app balancing and failover using VRRP.
Fairly short and simple configuration, unlike linux cluster which is a complex product.
Keep it simple, stupid if you can.
Hope that helps.
Regards
Peasant.
So, you will need to write one of those, it should be fairly simple reading the docs.
Be sure to use resource group, as resources in it will follow constraint order, start from first defined to last, stop from last defined to first.
But, applications are mostly load balanced not clustered in classic way, as stomp mentioned.
Can you elaborate more on your application receiving data on any port, does it listen on thousands of ports
Using opensource with haproxy and keepalived one can do great things with backend app balancing and failover using VRRP.
Fairly short and simple configuration, unlike linux cluster which is a complex product.
Keep it simple, stupid if you can.
Hope that helps.
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
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LEARN ABOUT SUSE
ocf_heartbeat_evmsscc
OCF_HEARTBEAT_EVMSSC(7) OCF resource agents OCF_HEARTBEAT_EVMSSC(7) NAME
ocf_heartbeat_EvmsSCC - Manages EVMS Shared Cluster Containers (SCCs) (deprecated) SYNOPSIS
EvmsSCC [start | stop | notify | status | monitor | meta-data] DESCRIPTION
Deprecation warning: EVMS is no longer actively maintained and should not be used. This agent is deprecated and may be removed from a future release. -- Resource script for EVMS shared cluster container. It runs evms_activate on one node in the cluster. SUPPORTED PARAMETERS
ignore_deprecation If set to true, suppresses the deprecation warning for this agent. (optional, boolean, default false) SUPPORTED ACTIONS
This resource agent supports the following actions (operations): start Starts the resource. Suggested minimum timeout: 60. stop Stops the resource. Suggested minimum timeout: 60. notify Suggested minimum timeout: 60. status Performs a status check. Suggested minimum timeout: 10. Suggested interval: 10. monitor Performs a detailed status check. Suggested minimum timeout: 10. Suggested interval: 10. meta-data Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5. EXAMPLE
The following is an example configuration for a EvmsSCC resource using the crm(8) shell: primitive example_EvmsSCC ocf:heartbeat:EvmsSCC op monitor depth="0" timeout="10" interval="10" SEE ALSO
http://www.linux-ha.org/wiki/EvmsSCC_(resource_agent) AUTHOR
Linux-HA contributors (see the resource agent source for information about individual authors) resource-agents 1.0.3 07/05/2010 OCF_HEARTBEAT_EVMSSC(7)