https://community.splunk.com/t5/Deployment-Architecture/Can-multiple-serverclasses-reference-the-same-app-in-serverclass/m-p/93681#M3443 <P>I'm still trying to address the need from <A href="http://splunk-base.splunk.com/answers/41276/groups-of-hosts-for-serverclassconf">Groups of hosts for serverclass.conf?</A> and I think I see an ugly hack, and I want to know if it'll break anything.</P> <P>Can two serverclasses in serverclass.conf reference the same app? E.g., if I have an app defined in the /opt/splunk/etc/deployment-apps/MyApp/ tree, can I have</P> <P>[serverClass:AlphaClass:app:MyApp] </P> <P>as well as </P> <P>[serverClass:BravoClass:app:MyApp] </P> <P>That way, if I have sets of servers for Alpha, Bravo, and Charlie, and log apps of MyAppOne and MyAppTwo, I can mix and match without having to repeat the complex whitelist/blacklist filters. In other words, if AlphaClass is going to need MyAppOne and MyAppTwo, I only specify the hosts via whitelist/blacklist once for AlphaClass and then have AlphaClass be the serverclass for both apps, and the app stanza just needs whitelist.0=* to equal the "group" of servers I specified in the class.</P> <P>Does that work or is there some subtlety of the way classes and apps interact that won't allow this sort of modular reuse?</P> Thu, 15 Mar 2012 21:17:32 GMT gowen 2012-03-15T21:17:32Z https://community.splunk.com/t5/Deployment-Architecture/Can-multiple-serverclasses-reference-the-same-app-in-serverclass/m-p/93681#M3443 <P>I'm still trying to address the need from <A href="http://splunk-base.splunk.com/answers/41276/groups-of-hosts-for-serverclassconf">Groups of hosts for serverclass.conf?</A> and I think I see an ugly hack, and I want to know if it'll break anything.</P> <P>Can two serverclasses in serverclass.conf reference the same app? E.g., if I have an app defined in the /opt/splunk/etc/deployment-apps/MyApp/ tree, can I have</P> <P>[serverClass:AlphaClass:app:MyApp] </P> <P>as well as </P> <P>[serverClass:BravoClass:app:MyApp] </P> <P>That way, if I have sets of servers for Alpha, Bravo, and Charlie, and log apps of MyAppOne and MyAppTwo, I can mix and match without having to repeat the complex whitelist/blacklist filters. In other words, if AlphaClass is going to need MyAppOne and MyAppTwo, I only specify the hosts via whitelist/blacklist once for AlphaClass and then have AlphaClass be the serverclass for both apps, and the app stanza just needs whitelist.0=* to equal the "group" of servers I specified in the class.</P> <P>Does that work or is there some subtlety of the way classes and apps interact that won't allow this sort of modular reuse?</P> Thu, 15 Mar 2012 21:17:32 GMT https://community.splunk.com/t5/Deployment-Architecture/Can-multiple-serverclasses-reference-the-same-app-in-serverclass/m-p/93681#M3443 gowen 2012-03-15T21:17:32Z https://community.splunk.com/t5/Deployment-Architecture/Can-multiple-serverclasses-reference-the-same-app-in-serverclass/m-p/93682#M3444 <P>The following would work as expected <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P> <PRE><CODE>[serverClass:Alpha] whitelist.0 = 10.1.1.1 whitelist.1 = 10.2.2.2 [serverClass:Bravo] whitelist.0 = 11.1.1.1 whitelist.1 = 11.2.2.2 [serverClass:Charlie] whitelist.0 = 12.1.1.1 whitelist.1 = 12.2.2.2 [serverClass:Alpha:app:MyAppOne] [serverClass:Alpha:app:MyAppTwo] [serverClass:Bravo:app:MyAppOne] [serverClass:Charlie:app:MyAppTwo] </CODE></PRE> <P>Alpha gets both apps, Bravo gets MyAppOne, Charlie gets MyAppTwo. No need to further specify whitelists/blacklists on the [serverClass:X:app:Y]-level. </P> <P>In fact if you add a <CODE>blacklist.0 = 10.1.1.1</CODE> for <CODE>[serverClass:Aplpha:app:MyAppOne]</CODE>, I think you have to explicitly re-add a <CODE>whitelist.0 = 10.2.2.2</CODE> on the app-level stanza, if I understood the documentation correctly.</P> <P>Simple as that.</P> <P>/Kristian</P> Thu, 15 Mar 2012 21:54:31 GMT https://community.splunk.com/t5/Deployment-Architecture/Can-multiple-serverclasses-reference-the-same-app-in-serverclass/m-p/93682#M3444 kristian_kolb 2012-03-15T21:54:31Z