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RH Bugzilla Integration commented on MODCLUSTER-339:
----------------------------------------------------
lfuka <lfuka(a)redhat.com> made a comment on [bug
"proxy: DNS lookup failure" with IPv6 on Solaris
------------------------------------------------
Key: MODCLUSTER-339
URL:
https://issues.jboss.org/browse/MODCLUSTER-339
Project: mod_cluster
Issue Type: Bug
Affects Versions: 1.2.3.Final, 1.2.4.Final
Environment: Solaris 10 x86, Solaris 11 x86, Solaris 11 SPARC
Reporter: Michal Babacek
Assignee: Jean-Frederic Clere
Priority: Critical
Labels: ipv6
Fix For: 1.2.5.Final
Attachments: access_log-mod_cluster, error_log-mod_cluster,
error_log-mod_cluster-RHEL, error_log-proxypass, http.conf
h2. Failure with mod_cluster
Having the following setting:
{code:title=mod_cluster.conf|borderStyle=solid|borderColor=#ccc| titleBGColor=#F7D6C1}
LoadModule slotmem_module modules/mod_slotmem.so
LoadModule manager_module modules/mod_manager.so
LoadModule proxy_cluster_module modules/mod_proxy_cluster.so
LoadModule advertise_module modules/mod_advertise.so
MemManagerFile "/tmp/mod_cluster-eap6/jboss-ews-2.0/var/cache/mod_cluster"
ServerName [2620:52:0:105f::ffff:50]:2080
<IfModule manager_module>
Listen [2620:52:0:105f::ffff:50]:6666
LogLevel debug
<VirtualHost [2620:52:0:105f::ffff:50]:6666>
ServerName [2620:52:0:105f::ffff:50]:6666
<Directory />
Order deny,allow
Deny from all
Allow from all
</Directory>
KeepAliveTimeout 60
MaxKeepAliveRequests 0
ServerAdvertise on
AdvertiseFrequency 5
ManagerBalancerName qacluster
AdvertiseGroup [ff01::7]:23964
EnableMCPMReceive
<Location /mcm>
SetHandler mod_cluster-manager
Order deny,allow
Deny from all
Allow from all
</Location>
</VirtualHost>
</IfModule>
{code}
I get a weird {{proxy: DNS lookup failure}} as soon as worker sends {{CONFIGURE}}}:
{code:title=access_log|borderStyle=solid|borderColor=#ccc| titleBGColor=#F7D6C1}
2620:52:0:105f::ffff:50 - - [16/May/2013:08:37:24 -0400] "INFO / HTTP/1.1" 200
- "-" "ClusterListener/1.0"
2620:52:0:105f::ffff:50 - - [16/May/2013:08:37:24 -0400] "CONFIG / HTTP/1.1"
200 - "-" "ClusterListener/1.0"
2620:52:0:105f::ffff:50 - - [16/May/2013:08:37:24 -0400] "STATUS / HTTP/1.1"
200 64 "-" "ClusterListener/1.0"
...
{code}
{code:title=error_log|borderStyle=solid|borderColor=#ccc| titleBGColor=#F7D6C1}
...
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(1923): manager_trans INFO (/)
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(2598): manager_handler INFO (/)
processing: ""
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(2647): manager_handler INFO OK
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(1923): manager_trans CONFIG (/)
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(2598): manager_handler CONFIG (/)
processing:
"JVMRoute=jboss-eap-6.1&Host=%5B2620%3A52%3A0%3A105f%3A0%3A0%3Affff%3A50%252%5D&Maxattempts=1&Port=8009&StickySessionForce=No&Type=ajp&ping=10"
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(2647): manager_handler CONFIG OK
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(1923): manager_trans STATUS (/)
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(2598): manager_handler STATUS (/)
processing: "JVMRoute=jboss-eap-6.1&Load=100"
[Thu May 16 08:37:24 2013] [debug] mod_manager.c(1638): Processing STATUS
[Thu May 16 08:37:24 2013] [debug] mod_proxy_cluster.c(655): add_balancer_node: Create
balancer balancer://qacluster
[Thu May 16 08:37:24 2013] [debug] mod_proxy_cluster.c(426): Created: worker for
ajp://[2620:52:0:105f:0:0:ffff:50%2]:8009
[Thu May 16 08:37:24 2013] [debug] mod_proxy_cluster.c(532): proxy: initialized worker 1
in child 16847 for (2620:52:0:105f:0:0:ffff:50%2) min=0 max=25 smax=25
[Thu May 16 08:37:24 2013] [debug] mod_proxy_cluster.c(601): Created: worker for
ajp://[2620:52:0:105f:0:0:ffff:50%2]:8009 1 (status): 1
[Thu May 16 08:37:24 2013] [debug] proxy_util.c(2011): proxy: ajp: has acquired
connection for (2620:52:0:105f:0:0:ffff:50%2)
[Thu May 16 08:37:24 2013] [debug] proxy_util.c(2067): proxy: connecting
ajp://[2620:52:0:105f:0:0:ffff:50%2]:8009/ to 2620:52:0:105f:0:0:ffff:50%2:8009
[Thu May 16 08:37:24 2013] [error] [client 2620:52:0:105f::ffff:50] proxy: DNS lookup
failure for: 2620:52:0:105f:0:0:ffff:50%2 returned by /
[Thu May 16 08:37:24 2013] [debug] proxy_util.c(2029): proxy: ajp: has released
connection for (2620:52:0:105f:0:0:ffff:50%2)
...
{code}
An attempt to access the mod_cluster manager console yields an unpleasant {{NOTOK}}
(obviously, we have All workers are in error state...):
{code}
curl -g [2620:52:0:105f::ffff:50]:6666/mcm
...
<h1> Node jboss-eap-6.1 (ajp://[2620:52:0:105f:0:0:ffff:50%2]:8009): </h1>
<a
href="/mcm?nonce=1bddeeea-f9d5-eeea-ee5b-e3a5e3c0a965&Cmd=ENABLE-APP&Range=NODE&JVMRoute=jboss-eap-6.1">Enable
Contexts</a> <a
href="/mcm?nonce=1bddeeea-f9d5-eeea-ee5b-e3a5e3c0a965&Cmd=DISABLE-APP&Range=NODE&JVMRoute=jboss-eap-6.1">Disable
Contexts</a><br/>
Balancer: qacluster,LBGroup: ,Flushpackets: Off,Flushwait: 10000,Ping: 10000000,Smax:
26,Ttl: 60000000,Status: NOTOK,Elected: 0,Read: 0,Transferred: 0,Connected: 0,Load: -1
{code}
You might take a look at the logs: [^error_log-mod_cluster], [^access_log-mod_cluster].
h2. ProxyPass itself works just fine
On the other hand, when I had tried this:
{code:title=proxypass.conf|borderStyle=solid|borderColor=#ccc| titleBGColor=#F7D6C1}
LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
ServerName [2620:52:0:105f::ffff:50]:2080
Listen [2620:52:0:105f::ffff:50]:6666
LogLevel debug
<VirtualHost [2620:52:0:105f::ffff:50]:6666>
ServerName [2620:52:0:105f::ffff:50]:6666
ProxyPass / ajp://[2620:52:0:105f:0:0:ffff:50]:8009/
ProxyPassReverse / ajp://[2620:52:0:105f:0:0:ffff:50]:8009/
<Directory />
Order deny,allow
Deny from all
Allow from all
</Directory>
</VirtualHost>
{code}
I received:
{code:title=error_log|borderStyle=solid|borderColor=#ccc| titleBGColor=#F7D6C1}
...
[Thu May 16 08:29:00 2013] [debug] mod_proxy_ajp.c(45): proxy: AJP: canonicalising URL
//[2620:52:0:105f:0:0:ffff:50]:8009/
[Thu May 16 08:29:00 2013] [debug] proxy_util.c(1506): [client 2620:52:0:105f::ffff:50]
proxy: ajp: found worker ajp://[2620:52:0:105f:0:0:ffff:50]:8009/ for
ajp://[2620:52:0:105f:0:0:ffff:50]:8009/
[Thu May 16 08:29:00 2013] [debug] mod_proxy.c(1020): Running scheme ajp handler (attempt
0)
[Thu May 16 08:29:00 2013] [debug] mod_proxy_http.c(1963): proxy: HTTP: declining URL
ajp://[2620:52:0:105f:0:0:ffff:50]:8009/
[Thu May 16 08:29:00 2013] [debug] mod_proxy_ajp.c(681): proxy: AJP: serving URL
ajp://[2620:52:0:105f:0:0:ffff:50]:8009/
[Thu May 16 08:29:00 2013] [debug] proxy_util.c(2011): proxy: AJP: has acquired
connection for (2620:52:0:105f:0:0:ffff:50)
[Thu May 16 08:29:00 2013] [debug] proxy_util.c(2067): proxy: connecting
ajp://[2620:52:0:105f:0:0:ffff:50]:8009/ to 2620:52:0:105f:0:0:ffff:50:8009
[Thu May 16 08:29:00 2013] [debug] proxy_util.c(2193): proxy: connected / to
2620:52:0:105f:0:0:ffff:50:8009
[Thu May 16 08:29:00 2013] [debug] proxy_util.c(2444): proxy: AJP: fam 26 socket created
to connect to 2620:52:0:105f:0:0:ffff:50
...
{code}
And from the client's side, it worked:
{{curl -g [2620:52:0:105f::ffff:50]:6666/}} brought me the worker's home page
(EAP's welcome in this case).
Take a look at the whole log [^error_log-proxypass].
*Note:* The [^http.conf] was the same both for mod_cluster and for proxypass test.
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