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Musomi,
On 8/6/19 11:04, Musomi Motilewa wrote:
> Hi-
>
> I'm currently running a two node cluster of Tomcat servers. I'm
> trying to implment Farm War Deployer
> (org.apache.catalina.ha.deploy.FarmWarDeployer) to deploy my war
> files to the cluster. The deployer is successfully deploying wars
> on the primary node when placed in the watch directory. On the
> secondary node the war file makes it to the tmp directory but is
> not deployed. The secondary node returns the following error:
>
> 06-Aug-2019 09:56:31.082 SEVERE
> [Tribes-Task-Receiver[localhost-Channel]-3]
> org.apache.catalina.ha.deploy.FarmWarDeployer.messageReceived
> Failed to rename [/var/tmp/war-tmp/ServerHealth.war] to
> [/opt/tomcat/latest/webapps/ServerHealth.war]
>
> Server Configuration
>
> - Apache Tomcat/9.0.22, - openjdk 12.0.2 2019-07-16 OpenJDK Runtime
> Environment 19.3 (build 12.0.2+9) OpenJDK 64-Bit Server VM 19.3
> (build 12.0.2+9, mixed mode, sharing)
>
> The <Cluster> tag is placed in the <Host> tag on both machines. The
> deployer tag is setup as follows with watchEnabled set to true on
> the primary server and false on the secondary. "{{
> tomcat_McastAddress }}" is replaced by Ansible.
>
> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
> channelSendOptions="8">
>
> <Manager className="org.apache.catalina.ha.session.DeltaManager"
> expireSessionsOnShutdown="false"
> notifyListenersOnReplication="true"/>
>
> <Channel
> className="org.apache.catalina.tribes.group.GroupChannel">
> <Membership
> className="org.apache.catalina.tribes.membership.McastService"
> address="{{ tomcat_McastAddress }}" port="45564" frequency="500"
> dropTime="3000"/>
>
> <Receiver
> className="org.apache.catalina.tribes.transport.nio.NioReceiver"
> address="auto" port="4000" autoBind="100" selectorTimeout="5000"
> maxThreads="6"/>
>
> <Sender
> className="org.apache.catalina.tribes.transport.ReplicationTransmitter
">
>
>
<Transport
className="org.apache.catalina.tribes.transport.nio.PooledParallelSender
"/>
> </Sender>
>
> <Interceptor
> className="org.apache.catalina.tribes.group.interceptors.TcpFailureDet
ector"/>
>
>
<Interceptor
className="org.apache.catalina.tribes.group.interceptors.MessageDispatch
Interceptor"/>
> </Channel>
>
> <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
> filter=".*\.gif|.*\.js|.*\.jpg|.*\.jpeg|.*\.png|.*\.htm|.*\.html|.*\.c
ss|.*\.txt"/>
>
> <Valve
> className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
>
> <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
> tempDir="/var/tmp/war-tmp/"
> deployDir="/opt/tomcat/latest/webapps/"
> watchDir="/var/tmp/war-watch/" watchEnabled="{{
> tomcat_deployerWatchEnabled|default('false', true) }}"
> processDeployFrequency="2" />
>
> <ClusterListener
> className="org.apache.catalina.ha.session.ClusterSessionListener"/>
>
>
</Cluster>
>
> The tempDir, deployDir and watchDir have the following owner and
> group permissions set.
>
> /var/tmp/ drwxrwxr-x. 2 tomcat tomcat 30 Aug 6 09:56 war-tmp
> drwxrwxr-x. 2 tomcat tomcat 6 Aug 6 08:18 war-watch
>
> /opt/tomcat/lastest/ drwxr-x---. 7 tomcat tomcat 81 Aug 6 09:45
> webapps
>
> A checksum of the war file on both servers match so the file is
> being transfered to the secondary server's tempDir correctly. It
> just doesnt seem to be getting transered from the tempdir to the
> deployDir successfully.
>
> Any help in this matter would be greatly appreciated. Thanks.
What do you get when you run these commands on the "secondary node"?
$ id tomcat
$ ps aux | grep catalina.base
$ mount
My guess is that your server is running as "tomcat" and your file
permissions are correct. I'm guessing that /var/tmp and /opt/tomcat
are on different filesystems and that File.rename doesn't work across
filesystems in your environment.
The only ways around this problem would be to either change the watch
directory to be on the same filesystem or to patch the Tomcat code.
IMHO Tomcat should try harder to re-name the file by copying/removing
if the File.renameTo doesn't work. But you'd have to either patch it
locally and re-build or wait for another release of Tomcat in order to
get that running.
- -chris
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