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From "Jeffrey Janner" <Jeffrey.Jan...@PolyDyne.com>
Subject RE: Host Manager.
Date Fri, 03 Sep 2010 17:40:59 GMT
> -----Original Message-----
> From: Pid [mailto:pid@pidster.com]
> Sent: Thursday, September 02, 2010 7:57 PM
> To: Tomcat Users List
> Subject: Re: Host Manager.
> 
> On 02/09/2010 21:06, Caldarale, Charles R wrote:
> >> From: Wesley Acheson [mailto:wesley.acheson@gmail.com]
> >> Subject: Host Manager.
> >
> >> Is there is no documentation for the host-manager?
> >
> > Very little that I've found.  You can learn a bit about it by
looking
> at its WEB-INF/web.xml file.
> >
> >> If I remember correctly from this list it doesn't persist its
> >> settings is that correct?
> >
> > Correct.
> >
> >> How many people would be interested in it persisting its settings,
> by
> >> editing the appropriate files.
> >
> > I would be interested.  Note that there's only one file to edit:
> conf/server.xml.
> >
> >> Is that in theory possible?
> >
> > It's all software...
> >
> >> to add the folder structure and the appropiate context.xml files.
> >
> > That's not necessary - the conf/Catalina/[host]/... files are
already
> created automatically as webapps are deployed under the new <Host>.
> Only conf/server.xml needs to be updated.
> >
> >> Would it interfere too badly with tomcat while it was running?
> >
> > No, Tomcat only reads server.xml during startup.  Whatever update
> mechanism is used must insure that the file is never in an unparsable
> state (e.g., don't update in place, instead create a new file and then
> rename it).
> 
> May I gently steer you in the direction of the JMX API and the
> Catalina:type=Server.Operations.storeConfig() command?
> 
> Not sure it works very well at the moment, but if it did...
> 
> p
> 

Well, it certainly meets my requirement that it writes it out sans
comments.
I added two hosts, smith & wesson, to an out-of-the-box 5.5.29 setup on
Windows. For smith, I just proved a name and appbase. For wesson, I also
unchecked AutoDeploy and DeployXML. I used jconsole to run the
storeConfig(), and it renamed the old file to server.xml.timestamp and
then wrote out a new server.xml sans comments.  It appears that it
doesn't write out anything that might be default settings.  It didn't
write out a port or shutdown value for <Server> and left out some
parameters for the <Connector> for port 8080.  It actually added a
connectionTimout="-1" to the AJP connector.  You can see the results
below.
All in all, it's not a great or perfect solution, but it is workable.

<?xml version="1.0" encoding="UTF-8"?>
<Server>
  <Listener className="org.apache.catalina.core.AprLifecycleListener"/>
  <Listener
className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/
>
  <Listener
className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"
/>
  <Listener
className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
  <GlobalNamingResources>
    <Environment
      name="simpleValue"
      type="java.lang.Integer"
      value="30"/>
    <Resource
      auth="Container"
      description="User database that can be updated and saved"
      name="UserDatabase"
      type="org.apache.catalina.UserDatabase"
      pathname="conf/tomcat-users.xml"
      factory="org.apache.catalina.users.MemoryUserDatabaseFactory"/>
  </GlobalNamingResources>
  <Service
      name="Catalina">
    <Connector
        port="8080"
        redirectPort="8443"
        minSpareThreads="25"
        connectionTimeout="20000"
        maxSpareThreads="75"
        maxThreads="150">
    </Connector>
    <Connector
        port="8009"
        redirectPort="8443"
        connectionTimeout="-1"
        protocol="AJP/1.3">
    </Connector>
    <Engine
        defaultHost="localhost"
        name="Catalina">
      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
      <Host
          appBase="polyweb2"
          autoDeploy="false"
          deployXML="false"
          liveDeploy="false"
          name="wesson">
      </Host>
      <Host
          appBase="polyweb"
          name="smith">
      </Host>
      <Host
          name="localhost">
      </Host>
    </Engine>
  </Service>
</Server>
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