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1. Re: HttpSession replication under Tomcat
dcartier Jun 17, 2003 9:10 AM (in response to ajud)The HttpSession replication *DOES* work under Tomcat. I have 4 nodes in a cluster using it now with jboss-3.0.7_jakarta-tomcat-4.1.24 and mod_jk behind Apache2. I do not use JK2 as I found it too confusing, perhaps later the docs will catch up to the code.
You should check to make sure you have a JVM route set properly on each node and then check the partitionName=DefaultPartition,service=DistributedState under the JBoss section in the jmx-console application. Clicking on the java.lang.String listContent() should list all the distributed sessions and you should see ones from various nodes (the node name will be on the end).
Example:
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Category : CMPClusteredInMemoryPersistenceManager-ClusteredHTTPSession
KEY : VALUE
"pQqXlC5A9h0b0Yq8T8+9gw**.tomcat3" : "[B@3dfb00e2"
"jQLD2DlGmd5Dg9LEXmkENA**.tomcat1" : "[B@532e40e2"
"Uf2NfHE66f7rlz6ljbV1og**.tomcat1" : "[B@5d07c0e3"
"si7L02QP0XV7ZxSBafaG7A**.tomcat3" : "[B@5ab600e3"
"5VGxRqQMU7bVOO76SOL9XA**.tomcat2" : "[B@621900e9"
"8ZB1jxfSoVddPEGhU+LXXA**.tomcat1" : "[B@3edf80e2"
"jXLaKJtYfluZ6GJGT2zPbA**.tomcat1" : "[B@289740e2"
"-cJiJJcKD5tMNNTi6JxMzg**.tomcat1" : "[B@7901c0e2"
"-6sc+6b6kLpv+5ncXylHsg**.tomcat1" : "[B@291340c2"
"pdvTY74HfSgoQ-zYpenEWA**.tomcat4" : "[B@6b4380f1"
"4e2-jhqWfFYfPzacKt1sng**.tomcat1" : "[B@2b30c0e2"
"kzWQMJIorFYIuPATwLyY4g**.tomcat1" : "[B@522ac0e2"
"k4SrXscjf1UJ3VEww85lcQ**.tomcat1" : "[B@2c0d00e2"
"sAKr-47VypBdi9K1fyOXNg**.tomcat4" : "[B@2f3080e2"
"zp1MsWTuooGejMzwMcOnqg**.tomcat1" : "[B@529200e2"
It does work keep at it.
Dennis -
2. Re: HttpSession replication under Tomcat
toniali Jun 17, 2003 2:51 PM (in response to ajud)HttpSession replication does work on jboss-3.2.1_tomcat-4.1.24, but it does not work on jboss-3.0.6_tomcat-4.1.*.
After the first server is dead, the second server takes more than 2 minutes to replicate the httpsession. I mean the failover takes 2 minutes. The two servers are located on two Solaris boxes.
In jboss-service.xml for tomcat, I use synchronously replicates changes to the other nodes.
The above test is based on a manual test. We are going to do some load testing to test the failover. I'll post the result after we complete the testing. -
3. Re: HttpSession replication under Tomcat
dcartier Jun 17, 2003 8:49 PM (in response to ajud)I also used JBoss 3.0.6_tomcat-4.1.18 previously (before 3.0.7) and it worked fine. Fail over was instanteous. Toniali, I would suggest you examine your setup as there must be something wrong. Sessions are replicated continuously, not just when a node fails.
This was all on Linux however, but I doubt that it makes a difference.
Dennis -
4. Re: HttpSession replication under Tomcat
ajud Jun 18, 2003 4:57 AM (in response to ajud)Thank you for your advise! It works now with jboss-3.2.1_tomcat-4.1.24 on w2k.
I added the jvmRoute to the jboss-service.xml. I do have sticky sessions now and failover works perfectly.
It's fundamental to define the correct jvmRoute string when using mod_jk2 load balancing. jvmRoute must equal the tomcatId, where tomcatId = host:port, for example sgw2fs01:8009 in case of a definition "[channel.socket:sgw2fs01:8009]" in workers2.properties.
Be carfeful and do not use an ip address for the host. Instead use the host name. Any dot in the host definition confuses the correct routing within JBoss.
I guess it's ClusterManager which lacks to manage that. -
5. Re: HttpSession replication under Tomcat
derry Jun 20, 2003 10:46 AM (in response to ajud)> Be carfeful and do not use an ip address for the
> host. Instead use the host name. Any dot in the host
> definition confuses the correct routing within
> JBoss.
> I guess it's ClusterManager which lacks to manage
> that.
You are right. I am looking for the LAST dot to strip of the JVM-Route. I have a look at this...
CU
Thomas -
6. Re: HttpSession replication under Tomcat
derry Jun 20, 2003 11:11 AM (in response to ajud)I committed the changed jvmRoute-handling to CVS. I now take the first occuring dot. This is safe because the generated sessionid contains no dots...
CU
Thomas -
7. Re: HttpSession replication under Tomcat
freemanhill Aug 27, 2003 3:10 AM (in response to ajud)I add
into jboss-service.xml,but can only get:
Operation listContent Results
Back to Agent View
Back to MBean View
--------------------------------------------------------------------------------
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Category : CMPClusteredInMemoryPersistenceManager-ClusteredHTTPSession
KEY : VALUE
'NGXH0fG0pK-j-VPYiOhS0A**' : '[B@12a09d5'
'QZUcSz+iflOgliG2etmNoA**' : '[B@eb9f58'
'k-8Jer+lljCqRqLzLL5hFQ**' : '[B@12a7c1e'
'PEbdaXZ01XFd1QX0UNDPGg**' : '[B@18a80d4'
'QKgFavjgjuhDL-HVgBl4Yw**' : '[B@ce41cc'
'W4KrmqZQVhHI7EMSJm88Nw**' : '[B@3a9c52'
'EL1W4HODLszA3x27etCl0Q**' : '[B@1ecfcd9'
'3fK3NBrZ1KZpcw8qLP323A**' : '[B@168c1e1'
'dnXKKJbpZeKwiZ-J89Opcg**' : '[B@1cc1f09'
'9GCQMVtNWmJUij6OZOtgZA**' : '[B@6b3fc7'
'0DuXpWsJsNs6oI84Jn536A**' : '[B@1dd1ed2'
'bJ4rqJIFmQJBNDqxaqnrlA**' : '[B@9a47d'
'PLRA1sWVDVnCvVM4cHAWiA**' : '[B@6399ae'
'JwMhj5ebmGJOqc8RMHjhWQ**' : '[B@e9c592'
'2PV+he335K1rBRuBnmQXbA**' : '[B@10e284f'
'Hcg6O4Dwi3lfa7An2okWxA**' : '[B@788315'
'gNTMwLopcwK71-MtO2Rx0w**' : '[B@10bbf6d'
'pju61A2CmFT0AlkHjaK4uQ**' : '[B@1e5ed7b'
'L8Ek1D1m4toReElphgWSGg**' : '[B@5c18ff'
'x5czIc1tJGrUDmmmMZMybw**' : '[B@4a4e31'
'r0JX-ns9P0Z1QAgV2vsHjQ**' : '[B@18ed284'
'IPZoq5BQbOr59HC3sZLB3Q**' : '[B@538cc2'
Do not get node name .
What wrong with it?
Thanks in advance. -
8. Re: HttpSession replication under Tomcat
vijaya Sep 8, 2003 4:15 AM (in response to ajud)Hai Everybody,
I've installed JBoss-4.0 and I'm able to configure 2 instances of Jboss and could see the 2 instances in cluster. Also, I could deploy stateful session bean successfully. But while accessing the jsps, I'm getting an exception "Non-serializable attribute"for the attribute which is of String type. Also, I'm getting warning message "No tx support found for method: findByPrimaryKey
No tx support found for method: create
No tx support found for method: setSession"
Can anybody help me how to proceed?
Thanks in advance.