October 2009 - mod_cluster-issues

[JBoss JIRA] Created: (MODCLUSTER-111) Create SPI and Isolate tomcat/jbossweb usage into service provider implementation

by Paul Ferraro (JIRA)

Create SPI and Isolate tomcat/jbossweb usage into service provider implementation --------------------------------------------------------------------------------- Key: MODCLUSTER-111 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-111 Project: mod_cluster Issue Type: Sub-task Affects Versions: 1.0.2.GA Reporter: Paul Ferraro Assignee: Jean-Frederic Clere Fix For: 1.1.0.Beta1 Create SPI for Server, Engine, Connector, Host, Context Isolate catalina SPI implementation, ContainerEventHandler adapter, and monolithic ModClusterListener into a separate sub-package. Replace any utilities from JBossWeb/Tomcat with standard/custom facilities, e.g. replace StringManager usage with separate resource bundle facility. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Created: (MODCLUSTER-84) Add domain versions of enable/disable/stop methods to HAModClusterServiceMBean

by Paul Ferraro (JIRA)

Add domain versions of enable/disable/stop methods to HAModClusterServiceMBean ------------------------------------------------------------------------------ Key: MODCLUSTER-84 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-84 Project: mod_cluster Issue Type: Feature Request Affects Versions: 1.0.0.GA Reporter: Paul Ferraro Assignee: Paul Ferraro enable(String domain) disable(String domain) stop(String domain) HASingleton performs enable/disable/stop operations on behalf of each node with the specified domain. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Commented: (MODCLUSTER-20) Adding the lifecycle listener dynamically

by Paul Ferraro (JIRA)

[ https://jira.jboss.org/jira/browse/MODCLUSTER-20?page=com.atlassian.jira.... ] Paul Ferraro commented on MODCLUSTER-20: ---------------------------------------- The AS will have mod_cluster's listener in the default server.xml. If the delegate bean does not exist, a warning appears in the log. So, as of AS 5.2.Beta1, users will no have to add the lifecycle listener themselves - it will already exist. This feature would still be of use for jbossweb standalone. > Adding the lifecycle listener dynamically > ----------------------------------------- > > Key: MODCLUSTER-20 > URL: https://jira.jboss.org/jira/browse/MODCLUSTER-20 > Project: mod_cluster > Issue Type: Feature Request > Reporter: Jean-Frederic Clere > Assignee: Jean-Frederic Clere > -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Created: (MODCLUSTER-72) Management operation to disable then stop node or webapp

by Brian Stansberry (JIRA)

Management operation to disable then stop node or webapp -------------------------------------------------------- Key: MODCLUSTER-72 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-72 Project: mod_cluster Issue Type: Feature Request Reporter: Brian Stansberry A common use case is to try to drain sessions from a server before taking it offline. With mod_cluster you can partially do that by invoking the JMX operation to disable a node, but then you need to manually monitor the # of active sessions so you can know when to stop the node. We should simplify this by adding an operation that tells the node to do the full disable-monitor session count-stop operation itself. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Resolved: (MODCLUSTER-66) HAModClusterService needs to handle cluster splits

by Paul Ferraro (JIRA)

[ https://jira.jboss.org/jira/browse/MODCLUSTER-66?page=com.atlassian.jira.... ] Paul Ferraro resolved MODCLUSTER-66. ------------------------------------ Resolution: Done Leverages new PING command to verify the livelihood of a dead member. If ping fails, only then is a REMOVE-APP * command sent on behalf of the dead member. > HAModClusterService needs to handle cluster splits > -------------------------------------------------- > > Key: MODCLUSTER-66 > URL: https://jira.jboss.org/jira/browse/MODCLUSTER-66 > Project: mod_cluster > Issue Type: Task > Affects Versions: 1.0.0.Beta4 > Reporter: Brian Stansberry > Assignee: Paul Ferraro > Fix For: 1.1.0.CR1 > > > The case where a split of the JGroups group occurs but nodes are still able to contact the httpd servers needs to be handled. There is a brief discussion of this on https://www.jboss.org/community/docs/DOC-11431 under "Split-Brain Syndrome". Problem is split-brain will result in nodes removing each other from httpd, resulting in no nodes active. > The wiki page describes a simple approach. A more complex approach would be to take a "primary partition" approach, whereby say an initial cluster of size n==6 {A, B, C, D, E, F} splits into two cluster {A, B, C, D} and { E, F}. To continue to handle requests a partition would need to have at least Math.floor((float) n / 2 + 1) members. > What kind of approach is appropriate would probably depend on the deployed webapps and how they interact with the cluster. If there is no clustered state that can become inconsistent across the cluster split, the simple approach described on the wiki can work fine (an HAModClusterService master doesn't disable a node if httpd reports it is still available). If there is shared state that needs to remain consistent (e.g. a clustered Hibernate Second Level Cache) then primary partition works better. > Most likely this overall problem will be resolved in stages, e.g. the simple approach from the wiki first. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Created: (MODCLUSTER-106) Allow advertise listener to listen on a specific network interface

by Paul Ferraro (JIRA)

Allow advertise listener to listen on a specific network interface ------------------------------------------------------------------ Key: MODCLUSTER-106 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-106 Project: mod_cluster Issue Type: Feature Request Affects Versions: 1.0.2.GA Reporter: Paul Ferraro Assignee: Paul Ferraro Fix For: 1.1.0.CR1 If null, listen on all interfaces (current behavior). -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Created: (MODCLUSTER-108) Allow thread factory injection for advertise listener

by Paul Ferraro (JIRA)

Allow thread factory injection for advertise listener ----------------------------------------------------- Key: MODCLUSTER-108 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-108 Project: mod_cluster Issue Type: Feature Request Affects Versions: 1.0.2.GA Reporter: Paul Ferraro Assignee: Paul Ferraro Priority: Minor Fix For: 1.1.0.CR1 Isolate advertise configuration from mcmp configuration. Add thread factory method to advertise configuration object. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Created: (MODCLUSTER-83) Add stop() methods to ModClusterServiceMBean

by Paul Ferraro (JIRA)

Add stop() methods to ModClusterServiceMBean -------------------------------------------- Key: MODCLUSTER-83 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-83 Project: mod_cluster Issue Type: Feature Request Affects Versions: 1.0.0.GA Reporter: Paul Ferraro Assignee: Paul Ferraro stop() : stop all apps on node stop(String hostName, String contextPath) : stop single app 1. Send disable request to proxy 2. Wait for sessions to drain 3. Send stop request to proxy -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Created: (MODCLUSTER-85) HAModClusterService can throw NullPointerExceptions after a partition merge

by Paul Ferraro (JIRA)

HAModClusterService can throw NullPointerExceptions after a partition merge --------------------------------------------------------------------------- Key: MODCLUSTER-85 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-85 Project: mod_cluster Issue Type: Bug Affects Versions: 1.0.0.GA Reporter: Paul Ferraro Assignee: Paul Ferraro Priority: Minor This is caused by updateClusterStatus rpcs returning null if a merged node has master status. Make sure all rpcs get the same treatment. 2009-07-27 14:29:48,134 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] (Incoming-20,10.248.107.114:32770) New cluster view for partition DefaultPartition: 4 ([10.240.62.47:1099, 10.248.107.114:1099, 10.249.195.196:1099] delta: 2) 2009-07-27 14:29:48,137 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] (AsynchViewChangeHandler Thread) Merging partitions... 2009-07-27 14:29:48,137 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] (AsynchViewChangeHandler Thread) Dead members: 0 2009-07-27 14:29:48,137 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] (AsynchViewChangeHandler Thread) Originating groups: [[10.240.62.47:32769|3] [10.240.62.47:32769, 10.249.195.196:32769], [10.248.107.114:32770|0] [10.248.107.114:32770]] 2009-07-27 14:29:50,878 ERROR [org.apache.catalina.core.ContainerBase] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Exception invoking periodic operation: java.lang.NullPointerException at org.jboss.modcluster.ha.HAModClusterService$ClusteredCatalinaEventHandler.updateClusterStatus(HAModClusterService.java:896) at org.jboss.modcluster.ha.HAModClusterService$ClusteredCatalinaEventHandler.status(HAModClusterService.java:836) at org.jboss.modcluster.ha.HAModClusterService$ClusteredCatalinaEventHandler.status(HAModClusterService.java:781) at org.jboss.modcluster.CatalinaEventHandlerAdapter.lifecycleEvent(CatalinaEventHandlerAdapter.java:157) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1348) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1612) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1601) at java.lang.Thread.run(Thread.java:636) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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[JBoss JIRA] Resolved: (MODCLUSTER-57) Advertise doesn't work when static

by Jean-Frederic Clere (JIRA)

[ https://jira.jboss.org/jira/browse/MODCLUSTER-57?page=com.atlassian.jira.... ] Jean-Frederic Clere resolved MODCLUSTER-57. ------------------------------------------- Resolution: Done fixed according to the tests > Advertise doesn't work when static > ---------------------------------- > > Key: MODCLUSTER-57 > URL: https://jira.jboss.org/jira/browse/MODCLUSTER-57 > Project: mod_cluster > Issue Type: Bug > Affects Versions: 1.0.0.Beta3 > Reporter: Jean-Frederic Clere > Assignee: Jean-Frederic Clere > Fix For: 1.1.0.CR1 > > > Advertise doesn't work when static. When buiding a static httpd (to profile it for example) Advertise doesn't work: > [error] mod_advertise: ServerAdvertise Address or Port not defined, Advertise disabled!!! > but when any Advertise directives: > Duplicate ServerAdvertise directives are not allowed -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 6 months

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mod_cluster-issues October 2009