docs: add monitoring alerting updates
This commit is contained in:
@@ -39,6 +39,7 @@ SilverLinux is the primary self-hosted platform for Silver Solutions and hosts s
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* Grafana
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* Node Exporter
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* cAdvisor
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* Alertmanager
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### Planned
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+20
-5
@@ -8,7 +8,7 @@ SilverLinux is the primary infrastructure server for Silver Solutions.
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The platform hosts source control, project management, video conferencing, container management and supporting infrastructure services.
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Monitoring, automated backups and restore validation are now operational.
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Monitoring, alerting, automated backups and restore validation are now production-ready.
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---
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@@ -148,6 +148,7 @@ Components:
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* Grafana
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* Node Exporter
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* cAdvisor
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* Alertmanager
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Validated:
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@@ -157,6 +158,7 @@ Validated:
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* cAdvisor
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* Backup metrics
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* Grafana datasource
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* Alertmanager email routing
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Dashboards:
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@@ -164,9 +166,16 @@ Dashboards:
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* Custom system dashboard
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* Docker monitoring dashboard
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Alerting:
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* Incident grouping
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* Severity-based routing
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* Alert deduplication
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* Multi-recipient email notifications
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Status:
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* Operational
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* Production ready
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---
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@@ -183,7 +192,7 @@ Purpose:
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Current version:
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* Backup v2
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* Backup v5.3
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Validated:
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@@ -193,10 +202,14 @@ Validated:
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* PostgreSQL backup
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* Email notifications
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* Cron automation
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* Backup metrics export
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* Lock file protection
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* Disk space validation
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* Structured failure handling
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Status:
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* Operational
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* Production ready
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---
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@@ -360,7 +373,9 @@ Completed:
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* Grafana + Prometheus
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* Node Exporter
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* cAdvisor
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* Alertmanager
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* Backup metrics integration
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* Incident intelligence
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### Phase 2 - Security And Stability
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@@ -371,7 +386,7 @@ Completed:
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Completed:
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* Backup v2 automation
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* Backup v5.3 automation
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* Restore validation
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### Phase 3 - Scale And Enterprise Services
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+19
-3
@@ -33,6 +33,7 @@ Public IP: 51.255.83.140
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* Grafana
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* Node Exporter
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* cAdvisor
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* Alertmanager
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## Domains
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@@ -115,6 +116,7 @@ Components:
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* Grafana
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* Node Exporter
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* cAdvisor
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* Alertmanager
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Validated:
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@@ -124,12 +126,22 @@ Validated:
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* cAdvisor
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* Backup metrics
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* Grafana datasource
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* Alertmanager email routing
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Grafana has custom backup, system and Docker monitoring dashboards.
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Alertmanager implements incident intelligence with incident groups:
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* `backup_failure`
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* `system_pressure`
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* `storage_pressure`
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* `database_outage`
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* `monitoring_failure`
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* `container_health`
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## Backup
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Backup v2 is operational.
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Backup v5.3 is production.
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Implemented:
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@@ -140,6 +152,10 @@ Implemented:
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* Automatic cleanup
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* Prometheus metrics export
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* Restore validation
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* Lock file protection
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* Disk space validation
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* Central logging
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* Structured failure handling
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Verified:
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@@ -160,9 +176,9 @@ and the README.md of each service folder before making infrastructure recommenda
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Roadmap:
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* Phase 1 completed: Grafana, Prometheus, Node Exporter, cAdvisor, backup metrics integration
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* Phase 1 completed: Grafana, Prometheus, Node Exporter, cAdvisor, Alertmanager, backup metrics integration, incident intelligence
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* Phase 1 remaining: Loki, Redis, Authelia
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* Phase 2 completed: Backup v2 automation, restore validation
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* Phase 2 completed: Backup v5.3 automation, restore validation
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* Phase 2 remaining: CrowdSec, Sentry, Fail2Ban upgrade, Cloudflare rate limiting and WAF
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* Phase 3: SonarQube, Harbor, Backstage, Nextcloud
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+40
-3
@@ -9,7 +9,7 @@ The goal is to ensure that all critical services can be restored after hardware
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Current state:
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```text
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Backup v2 operational
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Backup v5.3 production
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```
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---
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@@ -60,6 +60,34 @@ Operational
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---
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### Backup v5.3
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Implemented:
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* PostgreSQL backup using `pg_dumpall`
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* MSSQL backup using `sqlcmd` and `docker cp`
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* Gitea backup
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* BaGet backup
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* OpenProject backup
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* Docker configuration backup
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* Final compressed archive
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* Lock file protection
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* Disk space validation
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* Central backup logging
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* Structured failure handling
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* Prometheus Textfile Collector metrics output
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* Backup success and failure tracking
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* Duration and size monitoring
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* Historical logging
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Status:
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```text
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Production
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```
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---
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## Backup Priorities
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### Critical
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@@ -351,7 +379,7 @@ Suggested Structure:
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Current cleanup behavior:
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* Backup v2 monitors available disk space.
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* Backup v5.3 monitors available disk space.
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* If disk space is low, the oldest backups are deleted automatically.
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* Cleanup is logged.
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@@ -431,13 +459,21 @@ Validation results:
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## Monitoring Integration
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Backup v2 exports metrics for Prometheus.
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Backup v5.3 exports metrics for Prometheus.
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Current metrics:
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* Backup success
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* Backup duration
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* Backup size
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* Backup timestamp
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Metric names:
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* `silverlinux_backup_success`
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* `silverlinux_backup_duration_seconds`
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* `silverlinux_backup_size_bytes`
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* `silverlinux_backup_timestamp_seconds`
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Export path:
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@@ -546,6 +582,7 @@ Verify:
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* docs/server.md
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* docs/security.md
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* docs/secrets.md
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* docs/monitoring.md
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* postgres/README.md
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* gitea/README.md
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* openproject/README.md
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+43
-5
@@ -459,6 +459,7 @@ Deploy a dedicated monitoring Docker stack using:
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* Grafana for visualization
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* Node Exporter for host metrics
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* cAdvisor for Docker metrics
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* Alertmanager for alert routing and incident notifications
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Reason:
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@@ -466,6 +467,7 @@ Reason:
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* Grafana provides flexible dashboards and datasource integration.
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* Node Exporter provides host CPU, memory and disk visibility.
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* cAdvisor provides Docker container visibility.
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* Alertmanager provides grouping, deduplication and multi-recipient email routing.
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Status:
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@@ -479,6 +481,7 @@ Validation:
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* Prometheus targets validated
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* Grafana datasource connected to Prometheus
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* Initial monitoring dashboards created and validated
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* Alertmanager email routing validated
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---
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@@ -490,9 +493,10 @@ Export SilverLinux backup metrics through the Node Exporter Textfile Collector.
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Metrics:
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* Backup success
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* Backup duration
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* Backup size
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* `silverlinux_backup_success`
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* `silverlinux_backup_duration_seconds`
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* `silverlinux_backup_size_bytes`
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* `silverlinux_backup_timestamp_seconds`
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Reason:
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@@ -508,11 +512,11 @@ Implemented
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---
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## 2026-06-25 - Validate Backup v2 And Restore Workflow
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## 2026-06-25 - Validate Backup v5.3 And Restore Workflow
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Decision:
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Treat Backup v2 as the operational SilverLinux backup system.
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Treat Backup v5.3 as the operational SilverLinux backup system.
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Implemented:
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@@ -525,6 +529,10 @@ Implemented:
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* Backup metrics
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* Automatic low disk space cleanup
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* Daily cron execution
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* Lock file protection
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* Disk space validation
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* Central logging
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* Structured failure handling
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Validation:
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@@ -545,6 +553,36 @@ Implemented
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---
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## 2026-06-25 - Implement Incident Intelligence Alerting
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Decision:
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Use Alertmanager with incident grouping, severity-based routing and alert deduplication for SilverLinux monitoring.
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Incident groups:
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* `backup_failure`
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* `system_pressure`
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* `storage_pressure`
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* `database_outage`
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* `monitoring_failure`
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* `container_health`
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Reason:
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* Merge related alerts into single incidents.
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* Reduce notification noise.
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* Route alerts by severity.
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* Make alerts root-cause oriented.
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Status:
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```text
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Implemented
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```
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---
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## Future Decisions
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Document future decisions using the following template:
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@@ -147,6 +147,25 @@ Configured and validated
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---
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### Alertmanager
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Purpose:
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* Monitoring alert emails
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* Incident grouped notifications
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* Severity-based alert routing
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Recipients:
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* `oclick021@gmail.com`
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* `martin@silversolutions.nl`
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Status:
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Configured and validated
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---
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## Future Applications
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Future services should use the centralized SMTP configuration whenever possible.
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@@ -231,5 +250,6 @@ Verify:
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* docs/secrets.md
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* docs/security.md
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* docs/backups.md
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* docs/monitoring.md
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* openproject/README.md
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* gitea/README.md
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@@ -0,0 +1,311 @@
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# Monitoring And Alerting
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## Overview
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SilverLinux runs a self-hosted observability stack for metrics, dashboards, backup visibility and incident alerting.
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Current state:
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```text
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Production ready
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```
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The stack has evolved from basic monitoring into an incident intelligence system with alert grouping, severity routing and email notifications.
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---
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## Stack Components
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### Prometheus
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Purpose:
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* Metrics collection
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* Alert rule evaluation
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* Monitoring data storage
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Status:
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```text
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Running
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```
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---
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### Grafana
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Purpose:
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* Monitoring dashboards
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* Prometheus datasource visualization
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* Backup, system and Docker visibility
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Dashboards:
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* Custom backup dashboard
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* Custom system dashboard
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* Docker monitoring dashboard
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Compatibility note:
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The imported Prometheus 2.0 Overview dashboard is not compatible with Prometheus `3.5.4`. This is a third-party dashboard compatibility issue, not an infrastructure problem.
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Status:
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```text
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Running
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```
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---
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### Node Exporter
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Purpose:
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* Host metrics
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* CPU, memory and disk metrics
|
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* Textfile Collector for custom backup metrics
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Status:
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```text
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Running
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```
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---
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### cAdvisor
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Purpose:
|
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* Docker container metrics
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* Container CPU and memory visibility
|
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* Container health and restart visibility
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Status:
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```text
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Running
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```
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---
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### Alertmanager
|
||||
|
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Purpose:
|
||||
|
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* Alert routing
|
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* Alert grouping
|
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* Alert deduplication
|
||||
* Email notifications
|
||||
* Incident intelligence
|
||||
|
||||
Recipients:
|
||||
|
||||
* `oclick021@gmail.com`
|
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* `martin@silversolutions.nl`
|
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|
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Status:
|
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|
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```text
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Running
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```
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---
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## Infrastructure
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Location:
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```text
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/srv/docker/monitoring
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```
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Architecture:
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* Docker-based stack
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* Persistent Prometheus volume
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* Persistent Grafana volume
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* Dedicated monitoring network
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---
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## Metrics
|
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### System Metrics
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Examples:
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* `node_load1`
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* `node_memory_*`
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* `node_filesystem_*`
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* Container metrics through cAdvisor
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||||
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||||
---
|
||||
|
||||
### Backup Metrics
|
||||
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Export method:
|
||||
|
||||
```text
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Node Exporter Textfile Collector
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||||
```
|
||||
|
||||
Metrics:
|
||||
|
||||
* `silverlinux_backup_success`
|
||||
* `silverlinux_backup_duration_seconds`
|
||||
* `silverlinux_backup_size_bytes`
|
||||
* `silverlinux_backup_timestamp_seconds`
|
||||
|
||||
---
|
||||
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||||
## Prometheus Scrape Targets
|
||||
|
||||
Prometheus successfully scrapes:
|
||||
|
||||
* Prometheus
|
||||
* Node Exporter
|
||||
* cAdvisor
|
||||
* SilverLinux backup metrics
|
||||
|
||||
Status:
|
||||
|
||||
```text
|
||||
Validated
|
||||
```
|
||||
|
||||
---
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||||
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||||
## Alerting Evolution
|
||||
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||||
### Stage v1
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||||
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||||
Implemented:
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||||
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||||
* Basic Prometheus rules
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||||
* Simple email alerts
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||||
|
||||
---
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||||
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||||
### Stage v2
|
||||
|
||||
Implemented:
|
||||
|
||||
* Alertmanager
|
||||
* Email routing
|
||||
* Multi-recipient alerts
|
||||
|
||||
---
|
||||
|
||||
### Stage v3-v4
|
||||
|
||||
Implemented:
|
||||
|
||||
* `incident_group` concept
|
||||
* Alert correlation by service
|
||||
* Severity-based routing
|
||||
* Alert deduplication
|
||||
* Reduced notification noise
|
||||
|
||||
---
|
||||
|
||||
## Incident Groups
|
||||
|
||||
Alertmanager groups alerts by incident category.
|
||||
|
||||
Incident groups:
|
||||
|
||||
* `backup_failure`
|
||||
* `system_pressure`
|
||||
* `storage_pressure`
|
||||
* `database_outage`
|
||||
* `monitoring_failure`
|
||||
* `container_health`
|
||||
|
||||
Outcome:
|
||||
|
||||
* Multiple related alerts merge into single incidents.
|
||||
* Alerts are root-cause oriented.
|
||||
* Alert fatigue is reduced.
|
||||
|
||||
---
|
||||
|
||||
## Alert Rules
|
||||
|
||||
### Backup
|
||||
|
||||
* `BackupFailed`
|
||||
* `BackupStale`
|
||||
|
||||
### System
|
||||
|
||||
* `HighCPU`
|
||||
* `HighMemoryUsage`
|
||||
* `DiskAlmostFull`
|
||||
|
||||
### Monitoring
|
||||
|
||||
* `PrometheusDown`
|
||||
* `GrafanaDown`
|
||||
|
||||
### Databases
|
||||
|
||||
* `PostgresDown`
|
||||
* `MSSQLDown`
|
||||
|
||||
### Containers
|
||||
|
||||
* `ContainerDown`
|
||||
* `TooManyRestarts`
|
||||
|
||||
---
|
||||
|
||||
## Implementation Fixes
|
||||
|
||||
Resolved during implementation:
|
||||
|
||||
* Fixed Docker mount errors caused by file versus directory conflicts
|
||||
* Standardized alert rule file naming as `alerts.yml`
|
||||
* Fixed Prometheus rule loading configuration
|
||||
* Eliminated duplicate backup success metric sources
|
||||
* Unified backup metric naming to `silverlinux_backup_*`
|
||||
|
||||
---
|
||||
|
||||
## Data Flow
|
||||
|
||||
```text
|
||||
Servers
|
||||
-> Node Exporter / cAdvisor
|
||||
-> Prometheus
|
||||
-> Alertmanager
|
||||
-> Email notifications
|
||||
-> Grafana dashboards
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Validation
|
||||
|
||||
Validated:
|
||||
|
||||
* Prometheus UI
|
||||
* Prometheus targets
|
||||
* Node Exporter
|
||||
* cAdvisor
|
||||
* Backup metrics
|
||||
* Grafana datasource
|
||||
* Alertmanager email routing
|
||||
* Backup success and failure visibility
|
||||
|
||||
---
|
||||
|
||||
## Related Documentation
|
||||
|
||||
* docs/services.md
|
||||
* docs/backups.md
|
||||
* docs/security.md
|
||||
* docs/network.md
|
||||
* docs/email.md
|
||||
* docs/decisions.md
|
||||
@@ -80,6 +80,7 @@ Internal monitoring services:
|
||||
* Grafana
|
||||
* Node Exporter
|
||||
* cAdvisor
|
||||
* Alertmanager
|
||||
|
||||
Verified subnet:
|
||||
|
||||
@@ -188,6 +189,7 @@ Services:
|
||||
* Grafana
|
||||
* Node Exporter
|
||||
* cAdvisor
|
||||
* Alertmanager
|
||||
|
||||
Validated:
|
||||
|
||||
@@ -196,6 +198,7 @@ Validated:
|
||||
* Prometheus scrapes cAdvisor
|
||||
* Prometheus scrapes SilverLinux backup metrics
|
||||
* Grafana connects to Prometheus
|
||||
* Alertmanager routes monitoring alerts
|
||||
|
||||
---
|
||||
|
||||
@@ -292,5 +295,6 @@ Periodically verify:
|
||||
|
||||
* docs/services.md
|
||||
* docs/security.md
|
||||
* docs/monitoring.md
|
||||
* docs/decisions.md
|
||||
* nginx-proxy-manager/README.md
|
||||
|
||||
+18
-2
@@ -51,6 +51,7 @@ Completed components:
|
||||
* Grafana
|
||||
* Node Exporter
|
||||
* cAdvisor
|
||||
* Alertmanager
|
||||
|
||||
Validation:
|
||||
|
||||
@@ -58,6 +59,14 @@ Validation:
|
||||
* Prometheus targets validated
|
||||
* Grafana datasource connected to Prometheus
|
||||
* Initial dashboards created and validated
|
||||
* Alertmanager email routing validated
|
||||
|
||||
Alerting:
|
||||
|
||||
* Incident grouping implemented
|
||||
* Severity-based routing implemented
|
||||
* Alert deduplication implemented
|
||||
* Multi-recipient email alerts implemented
|
||||
|
||||
---
|
||||
|
||||
@@ -257,7 +266,7 @@ Planned
|
||||
Current backup status:
|
||||
|
||||
```text
|
||||
Backup v2 operational
|
||||
Backup v5.3 production
|
||||
```
|
||||
|
||||
Completed:
|
||||
@@ -269,6 +278,10 @@ Completed:
|
||||
* Automatic cleanup
|
||||
* Backup metrics export
|
||||
* Restore validation
|
||||
* Lock file protection
|
||||
* Disk space validation
|
||||
* Central logging
|
||||
* Structured failure handling
|
||||
|
||||
---
|
||||
|
||||
@@ -288,7 +301,9 @@ Completed:
|
||||
* Prometheus
|
||||
* Node Exporter
|
||||
* cAdvisor
|
||||
* Alertmanager
|
||||
* Backup metrics integration
|
||||
* Incident intelligence
|
||||
|
||||
---
|
||||
|
||||
@@ -303,7 +318,7 @@ Items:
|
||||
|
||||
Completed:
|
||||
|
||||
* Backup v2 automation
|
||||
* Backup v5.3 automation
|
||||
* Restore validation
|
||||
|
||||
---
|
||||
@@ -340,4 +355,5 @@ Each roadmap item should receive documentation before deployment:
|
||||
* docs/security.md
|
||||
* docs/network.md
|
||||
* docs/backups.md
|
||||
* docs/monitoring.md
|
||||
* docs/decisions.md
|
||||
|
||||
@@ -180,6 +180,7 @@ Running
|
||||
Purpose:
|
||||
|
||||
* Metrics collection
|
||||
* Alert rule engine
|
||||
* Monitoring data storage
|
||||
* Scrape targets for system, Docker and backup metrics
|
||||
|
||||
@@ -190,6 +191,14 @@ Scrapes:
|
||||
* cAdvisor
|
||||
* SilverLinux backup metrics
|
||||
|
||||
Alert categories:
|
||||
|
||||
* Backup
|
||||
* System pressure
|
||||
* Monitoring health
|
||||
* Database availability
|
||||
* Container health
|
||||
|
||||
Status:
|
||||
|
||||
```text
|
||||
@@ -224,6 +233,38 @@ Running
|
||||
|
||||
---
|
||||
|
||||
### Alertmanager
|
||||
|
||||
Purpose:
|
||||
|
||||
* Alert routing
|
||||
* Email notifications
|
||||
* Incident grouping
|
||||
* Alert deduplication
|
||||
* Severity-based routing
|
||||
|
||||
Recipients:
|
||||
|
||||
* `oclick021@gmail.com`
|
||||
* `martin@silversolutions.nl`
|
||||
|
||||
Incident groups:
|
||||
|
||||
* `backup_failure`
|
||||
* `system_pressure`
|
||||
* `storage_pressure`
|
||||
* `database_outage`
|
||||
* `monitoring_failure`
|
||||
* `container_health`
|
||||
|
||||
Status:
|
||||
|
||||
```text
|
||||
Running
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
### Node Exporter
|
||||
|
||||
Purpose:
|
||||
@@ -552,6 +593,7 @@ Cleanup:
|
||||
* docs/server.md
|
||||
* docs/network.md
|
||||
* docs/roadmap.md
|
||||
* docs/monitoring.md
|
||||
* docs/domains.md
|
||||
* docs/security.md
|
||||
* docs/backups.md
|
||||
|
||||
Reference in New Issue
Block a user