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Posted to users@tomcat.apache.org by Christopher Schultz <ch...@christopherschultz.net> on 2013/11/22 02:54:10 UTC
Re: [OT] How to Deploy an Update to War File
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Leo,
On 11/21/13, 6:06 PM, Leo Donahue - OETX wrote:
>> -----Original Message----- From: Daniel Mikusa
>> [mailto:dmikusa@gopivotal.com] Subject: Re: How to Deploy an
>> Update to War File
>>
>> You can use parallel deployment with WAR files. Just name the
>> war file "webapps/<context-path>##<version>.war".
>>
> I need to try this... very cool.
It is. Mark worked a lot of magic into that feature.
Sadly for me, my primary web application is complicated enough and
database changes are big enough that we have to take our applications
completely off-line in order to to upgrades. I can't use
parallel-deployment myself.
I have dreams of zero-downtime upgrades, but managing such things with
a mutating database is a tricky proposition. It's worth the 5-minute
downtime to avoid weeks of planning and testing that two versions of
the same application can run together nicely.
- -chris
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RE: [OT] How to Deploy an Update to War File
Posted by Crystal Maramba <cm...@acumenllc.com>.
-----Original Message-----
From: Christopher Schultz [mailto:chris@christopherschultz.net]
Sent: Thursday, November 21, 2013 5:54 PM
To: Tomcat Users List
Subject: Re: [OT] How to Deploy an Update to War File
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Hash: SHA256
Leo,
On 11/21/13, 6:06 PM, Leo Donahue - OETX wrote:
>> -----Original Message----- From: Daniel Mikusa
>> [mailto:dmikusa@gopivotal.com] Subject: Re: How to Deploy an
>> Update to War File
>>
>> You can use parallel deployment with WAR files. Just name the
>> war file "webapps/<context-path>##<version>.war".
>>
> I need to try this... very cool.
It is. Mark worked a lot of magic into that feature.
Sadly for me, my primary web application is complicated enough and
database changes are big enough that we have to take our applications
completely off-line in order to to upgrades. I can't use
parallel-deployment myself.
I have dreams of zero-downtime upgrades, but managing such things with
a mutating database is a tricky proposition. It's worth the 5-minute
downtime to avoid weeks of planning and testing that two versions of
the same application can run together nicely.
- -chris
Thanks. I knew that already. I just wanted to see the steps that others take. Sometimes after I copy and paste the .war file in the \webapps directory it requires a restart to the tomcat7 service. Not sure why. Is this normal behavior?
I read the Tomcat website but I was confused with this information in regards to the context:
"In order to configure a Context within Tomcat a Context Descriptor is required. A Context Descriptor is simply an XML file that contains Tomcat related configuration for a Context, e.g naming resources or session manager configuration. In earlier versions of Tomcat the content of a Context Descriptor configuration was often stored within Tomcat's primary configuration file server.xml but this is now discouraged (although it currently still works)."
Source: http://tomcat.apache.org/tomcat-7.0-doc/deployer-howto.html#Deploying_using_the_Client_Deployer_Package
Currently, I have a context parameter that supposed to auto deploy the war files, see below:
"<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">"
But the information above says it is not recommended.
-crys
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