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InfoScale™ Cluster Server 9.0 Bundled Agents Reference Guide - Linux

Last Published: 2025-04-14

Product(s): InfoScale & Storage Foundation (9.0)

Platform: Linux

Support for cloned Application agent

The Application agent is used to make applications highly available when an appropriate ISV agent is not available. To make multiple different applications highly available using a cluster, you must create a service group for each application. InfoScale lets you clone the Application agent so that you can configure a different service group for each application. You must then assign the appropriate operator permissions for each service group for it to function as expected.

Note:

A cloned Application agent is also IMF-aware.

To clone agent

Stop the cluster.
# hastop -all -force
On each node, copy the Application agent directory, and rename the agent as follows:
# cd /opt/VRTSvcs/bin
# cp -r Application newAppName
# cd newAppName
# mv ApplicationAgent newAppNameAgent

On any one cluster node, navigate to the following directory:

# cd /etc/VRTSvcs/conf/config

Create a newAppNameAgent.cf file in this directory with following content:

type newAppName (
static int IMF{} = { Mode=3, MonitorFreq=1, RegisterRetryLimit=3 }
static str IMFRegList[] = { MonitorProcesses, User, PidFiles, 
  MonitorProgram, StartProgram, LevelTwoMonitorFreq }
static keylist SupportedActions = { "program.vfd", "user.vfd", 
  "cksum.vfd", getcksum, propcv }
static int LevelTwoMonitorFreq = 1
static str ArgList[] = { User, StartProgram, StopProgram, 
  CleanProgram, MonitorProgram, PidFiles, MonitorProcesses, 
  EnvFile, UseSUDash, State, IState, StartOnly }
static int ContainerOpts{} = { RunInContainer=1, PassCInfo=0 }
str User = root
str StartProgram
str StopProgram
str CleanProgram
str MonitorProgram
str PidFiles[]
str MonitorProcesses[]
str EnvFile
boolean UseSUDash = 0
boolean StartOnly = 0
)

Include the newAppNameAgent.cf file in main.cf.

Then, start the cluster.

# hastart

Start the cluster on all the other nodes to propagate the addition of cloned new application agent.

Sample cloned Application agent configuration

The following sample includes an application (app1) and a cloned application (my_app1).

Application app1 (
    StartProgram = "/opt/app1/start"
    StopProgram = "/opt/app1/stop"
    CleanProgram = "/opt/app1/stop"
    MonitorProgram = "/opt/app1/monitor"
    PidFiles = { "/tmp/app1.pid" }
    )

MyApplication my_app1 (
    StartProgram = "/opt/my_app1/start"
    StopProgram = "/opt/my_app1/stop"
    CleanProgram = "/opt/my_app1/stop"
    MonitorProgram = "/opt/my_app1/monitor"
    PidFiles = { "/tmp/my_app1.pid" }
    )