Migrating Repository Shards

Updated 1,663 Days AgoPublic

Actions

• Create the new shard (repo123.phacility.net) and service (repox123.phacility.net) following Adding Hardware.
• Add the new service (repox123.phacility.net) to the instance.
• Disable allocations on the old service (repox000.phacility.net).

admin/ $ PHABRICATOR_INSTANCE=admin /core/lib/instances/bin/instances set-service-property \
  --instance turtle --service repox000.phacility.net --key disable-allocations --value true

• Review service configuration in web UI.
• Sync services.

The instance is now running with two repository service shards, and only the new shard accepts new allocations. This is a stable state. From here, we'd like to migrate existing repositories to the new shard.

For each repository (from bin/repository list), save the state:

src/ $ PHABRICATOR_INSTANCE=turtle /core/lib/services/bin/services save-repository \
    --repository rXYZ --maintenance <message>

...then load it on the destination shard:

dst/ $ PHABRICATOR_INSTANCE=turtle /core/lib/services/bin/services load-repository \
    --repository rXYZ --file <phid> --activate-device repo123.phacility.net

Once this is finished:

• Disable daemons on the old shard.

admin/ $ PHABRICATOR_INSTANCE=admin /core/lib/instances/bin/instances set-service-property \
  --instance turtle --service repox000.phacility.net --key disable-daemons --value true

• Synchronize services.