COS configuration
Platform:
| Channel | Revision | Published | Runs on |
|---|---|---|---|
| 3.0/stable | 116 | 07 Jul 2026 | |
| 3.0/candidate | 121 | 07 Aug 2026 | |
| 3.0/beta | 121 | 07 Aug 2026 | |
| 3.0/edge | 121 | 06 Aug 2026 | |
| dev/edge | 124 | 20 Aug 2026 | |
| 2/stable | 79 | 12 Nov 2025 | |
| 2/candidate | 117 | 04 Jul 2026 | |
| 2/beta | 117 | 04 Jul 2026 | |
| 2/edge | 117 | 03 Jul 2026 | |
| 1/stable | 71 | 08 Jul 2025 | |
| 1/candidate | 71 | 26 Jun 2025 | |
| 1/beta | 71 | 10 Jun 2025 | |
| 1/edge | 71 | 14 May 2025 |
juju deploy cos-configuration-k8s --channel 1/stableSolution matrix
| K8s charm | Machine charm | Legacy charms - LMA deps | Non-juju workload | |
|---|---|---|---|---|
| Logs | LokiPushApiConsumer (for workloads that can communicate directly with Loki, LogProxyConsumer (installs promtail in the workload; not suitable for air-gapped), LogForwarder (pebble-native, Juju>=3.4.1) | cos_agent (subordinate, pulls logs from /var/log or from other snaps with a matching slot) |
cos-proxy | grafana-agent snap (manually configured) |
| Metrics | prometheus_scrape (in-model), prometheus_remote_write (CMR) - with grafana-agent | cos_agent | cos-proxy | scrape-target, grafana-agent snap |
| Traces | tracing (instrumented workloads), charm_tracing (for the charm itself) | tracing (CMR), cos_agent | N/A | grafana-agent charm |
| Dashboards | grafana_dashboard, cos-configuration | cos_agent, cos-configuration | cos-proxy, cos-configuration | cos-configuration |
| Alert rules | via metrics and logs relations, cos-configuration | cos_agent, cos-configuration | cos-proxy, cos-configuration | cos-configuration |
- The COS Lite bundle does not include tracing by default; however, there’s a bundle overlay for that.