Ceph » mgr » Dashboard

User Story¶

As a Ceph operator I want to have a unified view of the logs from the different daemons, so that:

• I can perform a backward/post-mortem analysis of events leading to an issue,
• I can monitor cluster events in real-time.

Persona¶

• Ceph cluster operator/sys admin
• Support engineer
• Developers

Context¶

Every daemon in Ceph stores its logs locally (there's a "cluster log" but it's extremely concise, and not useful for troubleshooting). This means that if a user wants to perform a post-mortem analysis of an issue, they have first to collect log traces from multiple hosts, which involves to:

1. Identify on which host a daemon is running,
2. Log in to that host,
3. Look for the log file in the filesystem,
4. Open the log and perform a search.

For debugging a Ceph issue, users often have to follow the operational events from multiple daemons, so this tasks gets more and more complicated. Additionally, it's almost impossible to perform real-time (vs. post-mortem) troubleshooting.

Implementation details¶

To explore multiple stacks: ELK, Fluentd, Loki, etc.

This might be embedded via iframe as already done for Grafana dashboards, or accessed stand-alone.

References¶

SUSE's Ceph + ELK