Change Details

- Create the new shard (`repo123.phacility.net`) and service (`repox123.phacility.net`) following [[ phacility_cluster/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. Migrate Repositories (General) ------ Each repository should be migrated individually. There is a general workflow (here) which can migrate any repository, and a simplified workflow (below) which can only migrate observed repositories. To use the general workflow: 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 ``` Migrating Repositories (Observed) ------ In the specific case where a repository is observed (rather than hosted), it can be migrated more simply, by running a single command on the destination host: ``` dst/ $ PHABRICATOR_INSTANCE=turtle /core/lib/services/bin/services load-repository \ --repository rXYZ --observe --activate-device repo123.phacility.net ``` This will fetch the local working copy from the remote instead of uploading and downloading it. Finishing Up ------ 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. --- For historical context, see T13393. For improvements to observed repositories, see T13600.

High-Level Method ==== ``` core/ $ PHABRICATOR_INSTANCE=admin ./lib/instances/bin/instances move \ --instance turtle \ --to repox-abcd1234.phacility.net ``` See also T13630. This script wraps the low-level steps below. NOTE: This will move **all** instance repositories and disable **all** old repository services. Low-Level Method ==== - Create the new shard (`repo123.phacility.net`) and service (`repox123.phacility.net`) following [[ phacility_cluster/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. Migrate Repositories (General) ------ Each repository should be migrated individually. There is a general workflow (here) which can migrate any repository, and a simplified workflow (below) which can only migrate observed repositories. To use the general workflow: 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 ``` Migrating Repositories (Observed) ------ In the specific case where a repository is observed (rather than hosted), it can be migrated more simply, by running a single command on the destination host: ``` dst/ $ PHABRICATOR_INSTANCE=turtle /core/lib/services/bin/services load-repository \ --repository rXYZ --observe --activate-device repo123.phacility.net ``` This will fetch the local working copy from the remote instead of uploading and downloading it. Finishing Up ------ 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. --- For historical context, see T13393. For improvements to observed repositories, see T13600.