The Scylla team is pleased to announce the release of Scylla Manager 1.1, a production-ready release of Scylla Manager for Scylla Enterprise customers.
Scylla Manager adds centralized cluster administration and recurrent task automation to Scylla Enterprise. Scylla Manager 1.x includes automation of periodic repair, with future releases providing rolling upgrades, recurrent backup, and more. With time, Scylla Manager will become the focal point of Scylla Enterprise cluster management, including a GUI frontend. Scylla Manager is available for all Scylla Enterprise customers. It can also be downloaded from scylladb.com for a 30-day trial.
Related links
- Get started with Scylla Manager
- Using sctool, Scylla Manager CLI tool
- Download Scylla Manager – for customers only, or for limited evaluation
- Upgrade Scylla Manager 1.0 to 1.1
- Report issues with Scylla Manager using the Scylla Enterprise support channels
New features in Scylla Manager 1.1
Scylla Manager Metrics, Dashboard, and Alerts
Scylla Manager now reports metrics over the Prometheus protocol. You can use Scylla Manager metrics directly or with the Scylla Manager dashboard from the Scylla Monitoring Stack.
With the latest addition of alerts to the Scylla Monitoring Stack, an alert will be triggered in case a repair has failed, or if Scylla Manager exits for any reason. More on Alerts here.
Full List of Scylla Manager metrics:
| Parameter | Description |
| cluster | Cluster unique identification (string) |
| host | Host IP address |
| shard | Shard (core) number |
| unit | Repair Unit |
| quantile | Histograms quantile |
| Metric | Type | Description |
| repair_duration_seconds | summary | repair_duration_seconds. The time repair has been running in seconds. |
| repair_segments_success | gauge | Number of repaired segment |
| repair_segments_error | gauge | Number of segments that failed to repair |
| repair_segments_total | gauge | Total number of segments to repair. Where repair_segments_error + repair_segments_success = repair_segments_total |
| ssh_open_streams_count | gauge | Number of active (multiplexed) connections to Scylla node. |
| log_error_total counter | counter | Total number of ERROR messages |
| log_info_total counter | counter | Total number of INFO messages |
Repair Retries
Starting from Scylla Manager 1.1, during a repair, should a segment fail for any reason, Scylla Manager skips the segment and continues until all segments have been repaired. It will then go back to the skipped segments and try to repair it a second time. Each repair attempt is considered a retry. The number of retries is configurable in the scylla-manager.yaml (see below)
You can follow the progress of retries using the sctool repair progress command or Grafana Manager dashboard.
Repair Configuration
The following new configuration parameters are now available:
sctool updates
- New date format across the tool. The new format contains TZ (UTC) info and is easier to read ie. 13 Apr 18 00:00 UTC
- Start/End/Duration info in the repair progress command
- Task list can be used without a cluster argument to see tasks on all the clusters
REST API updates
- New
/pingservice for testing manager availability - New
/metricsservice expose Manager metrics (also, see Scylla Manager Metrics above) - New
/progress/{run_id}return status of a specific repair - Rest API Update:
/cluster/{cluster_id}/repair/unit/{unit_id}/progressis now/cluster/{cluster_id}/repair/unit/{unit_id}/progress/{run_id}making the repair run ID mandatory.
Other improvements
- New script scyllamgr_ssh_test performs a quick test of SSH connectivity between Scylla manager and Scylla nodes
Noteworthy bug fixes in Scylla Manager 1.1
- All Time types are now represented as UTC (Coordinated Universal Time)
- sctool: The task list command now displays duration instead of end time. In addition, any task list command that is run without a cluster name argument, reports a list of tasks from all clusters.
- Scylla Manager log level is now configurable in the manager.yaml file
- Scylla REST API was reporting SSH errors with confusing error messages, this has been fixed.
- dist: A Restart directive was added to the scylla-mgmt service
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