On Sunday, April 27, 2014, Lito K <lkus9...@gmail.com> wrote:
> Hi everyone,
> I have the following scenario:
> I have an app.war file that needs to be expanded in tomcat, this war file
> creates a new directory at /app/{data,config,profile}.
> I need to change a file in /app/config/server.properties after the war
> expansion.
> I need to restart tomcat to refresh the config update.
>
> I tried this sequence:
> copy app.war in webapps
> run tomcat, the war expanded
> change config
> refresh tomcat
>
> In puppet, it becomes:
>
> file {"/tmp/app.war":
> ensure => "present",
> path => "/tomcat/webapps/app.war",
> owner => "tomcat",
> group => "tomcat",
> before => Service["tomcat"],
> }
>
> service { "tomcat":
> ensure => "running",
> enable => true,
> subscribe => File["/app/config/server.properties"],
> }
>
> file {"/app/config/server.properties":
> ensure => "present",
> source => "/tmp/newconfig/server.properties",
> owner => "tomcat",
> group => "tomcat",
> notify => Service["tomcat"],
> }
>
>
You'll want either the subscribe or notify relationship between the service
and file, but not both as that creates a dependency cycle.
I keep getting this error:
>
> *err: Could not apply complete catalog: Found 1 dependency cycle:*
>
> *(File[/app/config/server.properties] => Service[tomcat] =>
> File[/app/config/server.properties])*
>
> *Cycle graph written to /var/lib/puppet/state/graphs/cycles.dot.*
> I was wondering if someone can give me a hint how to solve this dependency
> cycle issue.
>
> My understanding:
> Tomcat subscribes to config file (meaning it will be refreshed if there's
> a change in the config file)
> The config file change, then it notifies tomcat.
> Tomcat picks up the notification, it then refreshes.
> I don't see where the cycle happens???
>
> I am fairly new to puppet, so any explanation would help.
>
> Many thanks.
>
> Puppet client: 2.7.25-2 (from EPEL, latest for CENTOS 6)
> OS: Redhat 6.4 64bit
>
>
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Josh
--
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