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grafana: extract MESSAGE field in log panels
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Use LogQL json parser and line_format to show only the MESSAGE
field instead of the full JSON blob in log panels.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Torjus Håkestad
2026-02-08 21:50:47 +01:00
parent ef026d9bfc
commit c64d299daf
1 changed files with 4 additions and 4 deletions
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8
services/grafana/dashboards/nixos-operations.json
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@@ -208,7 +208,7 @@
"datasource": {"type": "loki", "uid": "loki"}, "datasource": {"type": "loki", "uid": "loki"},
"targets": [ "targets": [
{ {
"expr": "{systemd_unit=\"nixos-upgrade.service\", host=~\"$host\"} |= \"Done. The new configuration is\"", "expr": "{systemd_unit=\"nixos-upgrade.service\", host=~\"$host\"} |= \"Done. The new configuration is\" | json | line_format \"{{.MESSAGE}}\"",
"refId": "A" "refId": "A"
} }
], ],
@@ -231,7 +231,7 @@
"datasource": {"type": "loki", "uid": "loki"}, "datasource": {"type": "loki", "uid": "loki"},
"targets": [ "targets": [
{ {
"expr": "{systemd_unit=\"nixos-upgrade.service\", host=~\"$host\"} |= \"building\"", "expr": "{systemd_unit=\"nixos-upgrade.service\", host=~\"$host\"} |= \"building\" | json | line_format \"{{.MESSAGE}}\"",
"refId": "A" "refId": "A"
} }
], ],
@@ -254,7 +254,7 @@
"datasource": {"type": "loki", "uid": "loki"}, "datasource": {"type": "loki", "uid": "loki"},
"targets": [ "targets": [
{ {
"expr": "{job=\"bootstrap\", host=~\"$host\"}", "expr": "{job=\"bootstrap\", host=~\"$host\"} | json | line_format \"{{.MESSAGE}}\"",
"refId": "A" "refId": "A"
} }
], ],
@@ -277,7 +277,7 @@
"datasource": {"type": "loki", "uid": "loki"}, "datasource": {"type": "loki", "uid": "loki"},
"targets": [ "targets": [
{ {
"expr": "{systemd_unit=\"nixos-upgrade.service\", host=~\"$host\"} |~ \"(?i)error|failed\"", "expr": "{systemd_unit=\"nixos-upgrade.service\", host=~\"$host\"} |~ \"(?i)error|failed\" | json | line_format \"{{.MESSAGE}}\"",
"refId": "A" "refId": "A"
} }
], ],