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AEM Meetup Sydney - Content Migration with CRX2Oak

AEM Meetup Sydney, 2017-05-31.
A closer look at the content migration tool and its various options. Discussion around how to use the tool for version upgrades and BAU activity (like Blue/Green deployments). Highlighting benefits, potential issues and things to consider when using the tool.

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AEM Meetup Sydney - Content Migration with CRX2Oak

  1. 1. Content Migration with CRX2Oak BY MICHAEL HENDERSON http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  2. 2. What’s the problem?  You want to transfer content from one AEM instance to another  You don’t want to create from a snapshot or a backup from the existing environment  Residual corruption? Dodgy data? Worried about previous versioned/patched assets that might transfer through via a full clone? Or, just want to start fresh?  Options?  Content package export/import: Large. Slow. No versions. No orphaned content. No resume.  Content transfer tool: CRX2Oak. http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  3. 3. What is the tool?  CRX2Oak has been created to migrate content from one AEM repository to another  Common use-cases for CRX2Oak are:  Upgrade: From an older version of AEM to a newer version  Sidegrade: From one instance to another of the same version but with architectural changes. I.e. Changing Node store or Blob store  Migration: From one instance to another fresh build of the same version and same architecture. Content + code release. Sometimes this is referred to as a “Blue/Green Deployment”  An open source version (without CRX2 upgrade functionality) is available as the Jackrabbit Oak “oak-upgrade” migration tool http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  4. 4. What can it do?  Resume Support: If you interrupt the command, you can continue it later on and it will continue where it left off  Customisable Upgrade Logic: Add custom values and control via Java classes  Support for Memory Mapped Operations: Improve performance  Selective Migration of Content: Copy just what you want to  Path Merging: Merge migrated content without clobbering  Version Support: Ability to copy versions including orphans  Open Source Version: oak-upgrade available (no CRX2 support)  Speed: Approx. 1.5GB per min with versions (on c4.xlarge) http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  5. 5. What version should I use?  Ensure the version of CRX2Oak is the same version (or as close as you can) as your destination version of Oak: http://localhost:4502/system/console/status- Repository%20Apache%20Jackrabbit%20Oak  Download the required version from Adobe’s public repository: https://repo.adobe.com/nexus/content/groups/public/com/adobe/granite/crx2oak/  WARNING: Using a mismatched Oak version of the tool can corrupt your instance! http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  6. 6. CRX2Oak – Migration Options http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  7. 7. CRX2Oak – Merge Option http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  8. 8. CRX2Oak – Version Options http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  9. 9. Let’s look at the command  Usage: Run via the command-line:  java -jar crx2oak.jar [options] [datastore-options] [source] [destination]  [source] & [destination] are directory or URI  CRX: /path/to/aem/crx-quickstart/repository  Mongo: mongodb://<hostname>:<port>/<database>  JDBC: jdbc:mysql://<hostname>:<port>/<schema>  Notes:  Both AEM instances NEED to be shut down  Both repositories NEED to be filesystem/script accessible  Docs: https://docs.adobe.com/docs/en/aem/6-2/deploy/upgrade/using-crx2oak.html  Note: Extra options available in help [java -jar <jar-file> -h] http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  10. 10. Larger Example  java  -Dlogback.configurationFile=logback.xml [logging]  -Xmx4g [memory usage]  -jar crx2oak-1.4.6-standalone.jar [CRX2Oak jar version]  /opt/aem/author60/crx-quickstart/repository [source]  /opt/aem/author62/crx-quickstart/repository [destination]  --include- paths=/content,/etc/cloudservices/testandtarget,/etc/designs/x,/etc/designs/y,/etc/designs/ z,/etc/tags,/etc/xyz,/home/users/x,/home/users/y,/home/groups/x,/home/groups/y [include paths]  --exclude-paths=/home/users/x/xyz,/home/groups/x/xyz [exclude paths]  --copy-versions=2016-08-29 [ignore versions before 2016-08-29]  --copy-orphaned-versions=2016-08-29 [ignore versions before 2016-08-29]  --copy-binaries [copy binaries – don’t just reference old DataStore]  --fail-on-error=true [fail if there’s an error] http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  11. 11. Things to look out for  AEM structures can change between versions; Notably:  From AEM 6.1 onwards user & group paths are hashed (by default), and then stored under a path with the first letter of their hash (including admin)  After AEM 6.0, workflow instance paths have an additional server node in their path. /etc/workflow/instances/serverXYZ/YYYY-MM-DD  From AEM 6.2 onwards, /content/campaign paths introduced a concept of area (default = master)  Content structures that you have created are the safest  I.e. /content/xyz  Ask whether you want versions or orphaned content to come across?  If not, then exclude them via “--copy-versions=false” and “--copy-orphaned-versions=false” (will run faster)  If so, specify appropriate dates so you only copy what you need  Don’t migrate package contents. Deploy packages as normal instead  Best to reindex everything post-migration. Delete indexes or run re-index tool http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au
  12. 12. Questions? http://www.filstan.com.au Michael Henderson Technical Director michael@filstan.com.au

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