Cluster a custom application Post: 303034444

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Top Forums UNIX for Beginners Questions & Answers Cluster a custom application Post 303034444 by mhs on Friday 26th of April 2019 02:02:14 AM

04-26-2019

Registered User

Thanks for your reply.
I want to deploy application on physical servers and I cannot use virtualization and VM. Furthermore methods like Vmware FT has some limitations like max no of VCPU and also RAM.
I think it should be much easier if I can use pacemaker as a cluster resource manager but I dont know how to introduce my application as a resource and how to route all traffic to my primary server and when server or application goes down traffic and requests route to other node.

Unfortunately my application is not like a service. normally my application gathers information from different servers and sends them to another servers thus methods like loadbalancer is not suitable for my scenario.

*************(floating IP)************
| ***route all traffic on every port ***|
| ******************************************|
ServerA*************************** ServerB
(APP) **************************(Stopped App)

I need a floating IP for my cluster and when serverA goes down All traffic switch to ServerB( Input and Output) also cluster start Stopped application on serverB. And when ServerA backs online all requests (Input or Output ) route to ServerA and Stop App on ServerB.

mhs

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LEARN ABOUT CENTOS

crm_node

PACEMAKER(8)						  System Administration Utilities					      PACEMAKER(8)

NAME

       Pacemaker - Part of the Pacemaker cluster resource manager

SYNOPSIS

       crm_node command [options]

DESCRIPTION

       crm_node - Tool for displaying low-level node information

OPTIONS

       -?, --help
	      This text

       -$, --version
	      Version information

       -V, --verbose
	      Increase debug output

       -Q, --quiet
	      Essential output only

   Stack:
       -A, --openais
	      Only try connecting to an OpenAIS-based cluster

       -H, --heartbeat
	      Only try connecting to a Heartbeat-based cluster

   Commands:
       -n, --name
	      Display the name used by the cluster for this node

       -N, --name-for-id=value
	      Display the name used by the cluster for the node with the specified id

       -e, --epoch
	      Display the epoch during which this node joined the cluster

       -q, --quorum
	      Display a 1 if our partition has quorum, 0 if not

       -l, --list
	      Display all known members (past and present) of this cluster (Not available for heartbeat clusters)

       -p, --partition
	      Display the members of this partition

       -i, --cluster-id
	      Display this node's cluster id

       -R, --remove=value
	      (Advanced) Remove the (stopped) node with the specified name from Pacemaker's configuration and caches

       In the case of Heartbeat, CMAN and Corosync 2.0, requires that the node has already been removed from the underlying cluster

   Additional Options:
       -f, --force

AUTHOR

       Written by Andrew Beekhof

REPORTING BUGS

       Report bugs to pacemaker@oss.clusterlabs.org

Pacemaker 1.1.10-29.el7 					     June 2014							      PACEMAKER(8)