June 2016 - mod_cluster-issues - Jboss List Archives

[JBoss JIRA] (MODCLUSTER-506) SegFault due to corrupt nodestatsmem

by Michal Karm Babacek (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-506?page=com.atlassian.jira.pl... ] Michal Karm Babacek reassigned MODCLUSTER-506: ---------------------------------------------- Assignee: Michal Karm Babacek (was: Jean-Frederic Clere) > SegFault due to corrupt nodestatsmem > ------------------------------------ > > Key: MODCLUSTER-506 > URL: https://issues.jboss.org/browse/MODCLUSTER-506 > Project: mod_cluster > Issue Type: Bug > Components: Native (httpd modules) > Affects Versions: 1.2.12.Final > Environment: _redhat_2.ep6.el6.x86_64 > Reporter: Michal Karm Babacek > Assignee: Michal Karm Babacek > Fix For: 1.2.13.Final > > > See linked bugzillas, corrupted nodestatsmem. -- This message was sent by Atlassian JIRA (v6.4.11#64026)

8 years, 7 months

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[JBoss JIRA] (MODCLUSTER-376) multiple workers with the same id following a tomcat crash/kill

by Jean-Frederic Clere (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-376?page=com.atlassian.jira.pl... ] Jean-Frederic Clere commented on MODCLUSTER-376: ------------------------------------------------ See http://pkgs.devel.redhat.com/cgit/rpms/mod_cluster-native/tree/mod_cluste... for the patch. > multiple workers with the same id following a tomcat crash/kill > --------------------------------------------------------------- > > Key: MODCLUSTER-376 > URL: https://issues.jboss.org/browse/MODCLUSTER-376 > Project: mod_cluster > Issue Type: Bug > Components: Native (httpd modules) > Affects Versions: 1.0.10, 1.2.11.Final > Environment: -JBoss Enterprise Web Server 1.0.2 > -mod_cluster 1.0.10.GA_CP04 > -Red Hat Enterprise Linux 5 > Reporter: Aaron Ogburn > Assignee: Jean-Frederic Clere > Fix For: 1.2.13.Final > > Attachments: 131122.patch > > > Following a kill or crash of tomcat, multiple workers are seen for a single id when a new tomcat node reconnects and reuses the id from the previously crashed worker. > The STATUS's ping check sees the old crashed worker first for the id and so pings the wrong destination. Thus the ping fails, and load factor is not applied. The persistent -1 load state leads to 503s. -- This message was sent by Atlassian JIRA (v6.4.11#64026)

8 years, 7 months

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[JBoss JIRA] (MODCLUSTER-479) Add support for Tomcat 9

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-479?page=com.atlassian.jira.pl... ] Radoslav Husar commented on MODCLUSTER-479: ------------------------------------------- The support will be renamed as "tomcat85" supporting both 8.5 and 9 milestones. > Add support for Tomcat 9 > ------------------------ > > Key: MODCLUSTER-479 > URL: https://issues.jboss.org/browse/MODCLUSTER-479 > Project: mod_cluster > Issue Type: Feature Request > Components: Core & Container Integration (Java) > Reporter: Radoslav Husar > Assignee: Radoslav Husar > Fix For: 2.0.0.Alpha1 > > > This won't be binary compatible with Tomcat 8 classes because there are some differences. > Comet support has bee removed, see https://github.com/apache/tomcat/commit/376a308dbb1742f9fc88e693fb8100c44... > Service.getContainer refactored https://github.com/apache/tomcat/commit/2d9d4519cea1879209848952832fe194a... -- This message was sent by Atlassian JIRA (v6.4.11#64026)

8 years, 7 months

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[JBoss JIRA] (MODCLUSTER-376) multiple workers with the same id following a tomcat crash/kill

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-376?page=com.atlassian.jira.pl... ] Radoslav Husar updated MODCLUSTER-376: -------------------------------------- Component/s: Native (httpd modules) > multiple workers with the same id following a tomcat crash/kill > --------------------------------------------------------------- > > Key: MODCLUSTER-376 > URL: https://issues.jboss.org/browse/MODCLUSTER-376 > Project: mod_cluster > Issue Type: Bug > Components: Native (httpd modules) > Affects Versions: 1.0.10, 1.2.11.Final > Environment: -JBoss Enterprise Web Server 1.0.2 > -mod_cluster 1.0.10.GA_CP04 > -Red Hat Enterprise Linux 5 > Reporter: Aaron Ogburn > Assignee: Jean-Frederic Clere > Fix For: 1.2.13.Final > > Attachments: 131122.patch > > > Following a kill or crash of tomcat, multiple workers are seen for a single id when a new tomcat node reconnects and reuses the id from the previously crashed worker. > The STATUS's ping check sees the old crashed worker first for the id and so pings the wrong destination. Thus the ping fails, and load factor is not applied. The persistent -1 load state leads to 503s. -- This message was sent by Atlassian JIRA (v6.4.11#64026)

8 years, 7 months

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[JBoss JIRA] (MODCLUSTER-466) mod_cluster undersizes the connection pool on httpd 2.2

by Radoslav Husar (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-466?page=com.atlassian.jira.pl... ] Radoslav Husar updated MODCLUSTER-466: -------------------------------------- Component/s: Native (httpd modules) > mod_cluster undersizes the connection pool on httpd 2.2 > ------------------------------------------------------- > > Key: MODCLUSTER-466 > URL: https://issues.jboss.org/browse/MODCLUSTER-466 > Project: mod_cluster > Issue Type: Bug > Components: Native (httpd modules) > Reporter: Aaron Ogburn > Assignee: Jean-Frederic Clere > Fix For: 1.2.13.Final > > > If all threads in a httpd child worker process are saturated with long requests, then all connections in the pool are exhausted, likely leaving none available for additional pings, which then fail with errors like: > [error] (70007)The timeout specified has expired: proxy: ajp: failed to acquire connection for ... > Documentation suggests the connection pool will be sized to ThreadsPerChild+1 to avoid that, but it looks like it is really just ThreadsPerChild on httpd 2.2. -- This message was sent by Atlassian JIRA (v6.4.11#64026)

8 years, 7 months

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[JBoss JIRA] (MODCLUSTER-463) UpperCase Alias never matches any context

by Michal Karm Babacek (JIRA)

[ https://issues.jboss.org/browse/MODCLUSTER-463?page=com.atlassian.jira.pl... ] Michal Karm Babacek updated MODCLUSTER-463: ------------------------------------------- Status: Resolved (was: Pull Request Sent) Resolution: Done > UpperCase Alias never matches any context > ----------------------------------------- > > Key: MODCLUSTER-463 > URL: https://issues.jboss.org/browse/MODCLUSTER-463 > Project: mod_cluster > Issue Type: Bug > Components: Native (httpd modules) > Affects Versions: 1.2.11.Final, 1.3.1.Final > Reporter: Michal Karm Babacek > Assignee: Michal Karm Babacek > Fix For: 1.3.3.Final, 1.2.13.Final > > Attachments: simplecontext-examples.zip > > > h3. Problem > h4. JBossWeb > Regardless the upper/lower case of an Alias one configured in _JBossWeb (EAP 6.4.3, mod_cluster subsystem 1.2.11.Final)_, it has always been reported to Apache HTTP Server in lower case. For example, the following configuration:{code:xml} > <subsystem xmlns="urn:jboss:domain:web:2.2" default-virtual-server="default-host" instance-id="workerXXX" native="false"> > <connector name="http" protocol="HTTP/1.1" scheme="http" socket-binding="http"/> > <connector name="ajp" protocol="AJP/1.3" scheme="http" socket-binding="ajp"/> > <virtual-server name="default-host" enable-welcome-root="true"> > <alias name="localhost"/> > <alias name="example.com"/> > </virtual-server> > <virtual-server name="web1" default-web-module="simplecontext-web1"> > <alias name="web1.rhel7GAx86-64"/> > </virtual-server> > <virtual-server name="web2" default-web-module="simplecontext-web2"> > <alias name="web2.rhel7GAx86-64"/> > </virtual-server> > </subsystem> > {code}sends this message with aliases actually being reported in lower case: {{JVMRoute=workerXXX&Alias=web2%2Cweb2.rhel7gax86-64&Context=%2F}}. Having {{aliases}} stored in lower case on the Apache HTTP Server side enables both these URLs to work perfectly:{noformat}curl http://web2.rhel7GAx86-64:6666/ > curl http://web2.rhel7gax86-64:6666/{noformat}. The balancer configuration is just a simple [UseAlias 1|http://fpaste.org/251417/86985831/]. > h4. Undertow > _Undertow (JBossWeb's successor in EAP 7.0.0.DR7, mod_cluster subsystem 1.3.1.Final)_ behaves differently; it reports verbatim what one sets as an alias, so with the following configuration:{code:xml}<subsystem xmlns="urn:jboss:domain:undertow:3.0" instance-id="workerXXX"> > <buffer-cache name="default"/> > <server name="default-server"> > <ajp-listener name="ajp" socket-binding="ajp"/> > <http-listener name="default" redirect-socket="https" socket-binding="http"/> > <host name="default-host" alias="localhost"> > <location name="/" handler="welcome-content"/> > <filter-ref name="server-header"/> > <filter-ref name="x-powered-by-header"/> > </host> > <host name="web1" alias="web1.rhel7GAx86-64"> > <location name="/" handler="web1-content"/> > <filter-ref name="server-header"/> > <filter-ref name="x-powered-by-header"/> > </host> > <host name="web2" alias="web2.rhel7GAx86-64"> > <location name="/" handler="web2-content"/> > <filter-ref name="server-header"/> > <filter-ref name="x-powered-by-header"/> > </host> > </server> > <servlet-container name="default"> > <jsp-config/> > <websockets/> > </servlet-container> > <handlers> > <file name="web1-content" path="${jboss.home.dir}/simplecontext-web1"/> > <file name="web2-content" path="${jboss.home.dir}/simplecontext-web2"/> > <file name="welcome-content" path="${jboss.home.dir}/welcome-content"/> > </handlers> > <filters> > <response-header name="server-header" header-value="WildFly/10" header-name="Server"/> > <response-header name="x-powered-by-header" header-value="Undertow/1" header-name="X-Powered-By"/> > </filters> > </subsystem>{code}, the message reported to Apache HTTP Server actually is:{{JVMRoute=workerXXX&Alias=web2%2Cweb2.rhel7GAx86-64&Context=%2F}}. Due to the fact that aliases are being compared byte-by-byte for equality (because pumping of slash characters takes place) and the accessed domain is always in lower case and alias is stored as it was received, there is never match between these. > The result is that while these work:{{http://web2:6666/}}, {{http://web1:6666/}}, one of the upper case containing ones work at all: {{http://web1.rhel7GAx86-64:6666}} and {{http://web2.rhel7gax86-64:6666/}} neither. By not working I actually mean they return the root of Apache HTTP Server Welcome page instead of correctly forwarding to one of the Application server's virtual host contexts. > Last but not least, while EAP 6.4.3 with JBossWeb itself treats aliases as case-insensitive, EAP 7.0.0.DR7 with Undertow does not; i.e. {{web1.rhel7GAx86-64:8080/}} returns correctly web application content whereas {{web1.rhel7gax86-64:8080/}} returns EAP7 Welcome page. > While the aforementioned is clearly a bug (or a weird feature :)) in Undertow, we must make the Apache HTTP Server code resilient to such behaviour. > h3. Solution > I suggest converting aliases to lower case in mod_manager on ENABLE-APP arrival. According to my preliminary tests, this approach works for both JBossWeb and Undertow equipped workers. I think it's cool to do that: [RFC 1035|https://tools.ietf.org/html/rfc1035#section-2.3.3]. -- This message was sent by Atlassian JIRA (v6.4.11#64026)

8 years, 7 months

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mod_cluster-issues June 2016