Table of Contents
System Settings
Provides an interface to manage settings on:
- Backup
- Cluster
- CmonDB
- Controller
- Long Query
- Replication
- Retention
- Sampling
- Swapping
- System
- Threshold
With each parameter setting, there is a description column of what it configures in the cluster.
CmonDB and Controller sections contain read-only settings that can’t be changed during runtime. To change these settings, please check /etc/cmon.d/cmon_X.cnf file, where X is the cluster ID. This might require a CMON restart.
Email Notifications
Configures email notifications for alarms generated for the corresponding database cluster. Each recipient (chosen from a user group) must be enabled before you can configure the delivery settings. You can add an external email address (a user that does not exist in ClusterControl) by clicking on Add an external email, however, you may need to configure the external user group to have at least read permission to the cluster.
| Field | Description |
|---|---|
| User group |
|
| Users in the selected group |
|
| Digest delivery time |
|
| Daily email limit |
|
The following table shows the event category that you can forward to a specific recipient:
| Event | Description |
|---|---|
| Network related logs | Network-related messages, e.g. host unreachable, SSH issues. |
| Cmon database logs | Internal CMON database-related messages. |
| Mail logs | Mail system-related messages. |
| Cluster logs | Cluster-related messages, e.g. cluster failed. |
| Cluster configuration logs | Cluster configuration messages, e.g. software configuration messages. |
| Recovery logs | Recovery messages like cluster or node recovery failures. |
| Node related logs | Message related to nodes, e.g. node disconnected, missing GRANT, failed to start HAProxy, failed to start NDB cluster nodes. |
| Host logs | Host-related messages, e.g. CPU/disk/RAM/swap alarms. |
| Health logs | Database health-related messages, e.g. memory usage of MySQL servers, connections. |
| Database performance | Alarms for long-running transactions and deadlocks |
| Installation logs | Software installation-related messages. |
| Backup logs | Messages about backups. |
| Other logs | Other uncategorized messages. |
On every event severity, you may choose the frequency of raised alarms/events to be delivered to the recipient:
| Action | Description |
|---|---|
| Ignore | Ignore if an alarm is raised. |
| Deliver | Send notification immediately via email once an alarm is raised. |
| Digest | Send a summary of alarms raised every day at Digest delivery time. |