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Repository Optimization and TAR PM index rebuild in clustered Weblogic servers

Repository Optimization and TAR PM index rebuild in clustered Weblogic servers. Refeng Wu CQ5 WCM System Administrator. CQ5 - Repository. Database -> Repository Huge size; maintenance issue Keeping the clean repository is one of the main task for CQ5 system administration Challenges:

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Repository Optimization and TAR PM index rebuild in clustered Weblogic servers

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  1. Repository Optimization and TAR PM index rebuild in clustered Weblogic servers Refeng Wu CQ5 WCM System Administrator

  2. CQ5 - Repository • Database -> Repository • Huge size; maintenance issue • Keeping the clean repository is one of the main task for CQ5 system administration • Challenges: • Third party application server • Websphere 7, JBoss 5.1, Oracle Weblogic 10.3.5, Tomcat 6 • Clustered environments • LDAP integration

  3. Challenges • Installation and configuration adjustments • Performance Tuning • Very time-consuming Maintenance process - Repository is very big • Slave repository out-of-syn with Master repository • Server maintenance / catastrophic failure, and could not be restarted smoothly • LDAP issue: • Author instance cannot login, system frozen • Publish instance directed to geometrixx login page • Log Errors: seldom with right solutions

  4. Database Maintenance • Monitoring databases: Monitoring the state of the database ensures -- Availability of the Database; Better Performance. • Backup and recovery: To prevent the potential loss of data, set up a backup and recovery plan -- scheduling regular backups; special backup after large data is imported/modified. • Performance Tuning • Reorganizing and generating database statistics: The DB optimizer requires statistical metadata info about tables & the best way to access data. • Re-creating all indexes: to improve query performance when many existing indexes require reorganization. • Managing database connections: define max connection pools for each of services to optimize the balance between resources and requests. • Purging performance profiling data: to restore free disk space and speed up database utilities. • Dropping temporary tables: drop all data from temporary tables/indexes that hold data due to failed job process. • Old object versions: check for old object versions and delete from database tables to restore storage space, enhance performance, and speed up database utilities.

  5. Repository maintenance(Database + file system maintenance) • Proactive solution • Check up the log file daily • Final solution • Repository/instance backup daily • Daily Maintenance for Performance Improvement • Indexing and Optimization • Enable hierarchy check • Validate change-set hierarchy • Setup LDAP log • Schedule consistency check • Test clustered PROD repository in QA • Rebuild Index • Running Garbage Collection

  6. Repository Optimization • Tar Files: append-only file, disk usage increases • copies data being used from old tar files into new tar files; • deletes the old tar files that contain only old or redundant data • Node parent-child inconsistency • Search index inconsistency • Optimization process: • Merging index files • IndexSet: Merging index files for /app/CQ5/Author/crx-quickstart/repository/version • IndexSet: Merging index files for /app/CQ5/Author/crx-quickstart/repository/tarJournal • IndexSet: Merging index files for /app/CQ5/Author/crx-quickstart/repository/workspaces/crx.default • Rename TarFile: • Renaming /app/CQ5/Author/crx-quickstart/repository/version/optimize.tar to /app/CQ5/Author/crx-quickstart/repository/version/optimizeNow.tar • Optimize TarFile: • /app/CQ5/Author/crx-quickstart/repository/version/data_00331.tar id:331 length:144674816 append:144673792 • Merging index files: • Merging index files for /app/CQ5/Author/crx-quickstart/repository/version ……

  7. Indexing • Lucent Index: node content full-text search, resource-consuming, time-consuming • /repository/repository/index • LuceneSearch Index for jcr:system (includes jcr:versionStorage) • /repository/workspace/crx.default/index • LuceneSearch Index for crx.defaultworkspace • TAR PM Index: node index • /repository/workspace/crx.default/index*.tar • Tar PM Index for crx.defaultworkspace • /repository/version/index*.tar • Tar PM Index for version workspace • /repository/tarJournal/index*.tar • Tar PM Index for the cluster journal for Journal PM in 5.4

  8. Consistency Check • Consistency Check: repository.xml, workspace.xml • Add parameters to all <SearchIndex...> elements • Add parameters to all <PersistenceManager...> elements • Not solving all corrupted nodes • couple nodes, or too many nodes to be fixed • Index Rebuild • Removing index.tar files from three folders in repository • Do it together with Consistency Check during repository startup • 8G takes less than 30 minutes.

  9. Rebuild Clustered PROD Repository • Moving Clustered repository to in QA or Devenvironment • Modify context configure in each server / domain • Weblogicserver bootstrap.properties • Modify cluster configure • change slave cluster.propertyip address • Test the whole process in QA or Dev with PROD Repository • Be prepared for possible results: master fails, slave fails – copy from master, recovery from zip file • Get a solution for each result • Maintenance window and anticipated hours for use

  10. LDAP setup • Enable LDAP log info • <logger><appender name="ldap" class="org.apache.log4j.FileAppender"> </logger> • /crx-quickstart/server/etc/Ldap_login.config • Author instance - ldapgroup filter: • (&(objectclass=group)(cn=wcm*)) • Publish instance: • remove group synchronization vs Close User Group • *WARN * ItemSaveOperation: /home/groups/COM/ABB/PROD/CN=Adobe Pro Users,OU=Corporate,OU=Groups,DC=PROD,DC=ABB,DC=COM/rep:lastsynced: failed to restore transient state (ItemSaveOperation.java, line 897)

  11. Q&A

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