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grafana: the data-transferred-by-domain panel steps at 5 minutes and draws bars

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Squid logs a tunnel's bytes once, when it closes, so a large download was
one point in a small bucket and read as instantaneous. The panel now has a
5 minute minimum interval and bars, so that point is a visible bar. The
module-eval check pins both.
This commit is contained in:
iris 2026-11-09 21:06:07 +01:00 • committed by mara
commit b6af390581
2 changed files with 12 additions and 4 deletions
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10
nix/host-modules/swarm-grafana/dashboards/egress.json
View file

@ -1589,7 +1589,7 @@
"spec": { "spec": {
"id": 21, "id": 21,
"title": "Data transferred by domain over time", "title": "Data transferred by domain over time",
"description": "Bytes per top-10 domain, rest as other. A tunnel is logged at close, so long ones spike.", "description": "Bytes per top-10 domain, rest as other, in 5 minute bars. A tunnel counts when it closes.",
"links": [], "links": [],
"data": { "data": {
"kind": "QueryGroup", "kind": "QueryGroup",
@ -1637,7 +1637,9 @@
} }
], ],
"transformations": [], "transformations": [],
"queryOptions": {} "queryOptions": {
"interval": "5m"
}
} }
}, },
"vizConfig": { "vizConfig": {
@ -1663,9 +1665,9 @@
"mode": "palette-classic" "mode": "palette-classic"
}, },
"custom": { "custom": {
"drawStyle": "line", "drawStyle": "bars",
"lineWidth": 1, "lineWidth": 1,
"fillOpacity": 10, "fillOpacity": 60,
"showPoints": "never", "showPoints": "never",
"spanNulls": false, "spanNulls": false,
"axisSoftMin": 0 "axisSoftMin": 0

6
nix/module-eval/grafana.nix
View file

@ -713,6 +713,12 @@ let
&& (lib.head xf).spec.options.value == "__name__" && (lib.head xf).spec.options.value == "__name__"
&& (lib.head xf).spec.options.join != [ ] && (lib.head xf).spec.options.join != [ ]
) (lib.filter (e: e.spec.vizConfig.group == "table") (lib.attrValues board.spec.elements)) ) (lib.filter (e: e.spec.vizConfig.group == "table") (lib.attrValues board.spec.elements))
# Squid logs a tunnel's bytes once, when it closes, so a large download is
# one point. The by-domain panel steps no finer than 5 minutes and draws
# bars, so that point is a visible bar rather than a sliver.
&& board.spec.elements."panel-21".spec.data.spec.queryOptions.interval == "5m"
&&
board.spec.elements."panel-21".spec.vizConfig.spec.fieldConfig.defaults.custom.drawStyle == "bars"
&& lib.hasInfix "logformat would_deny would_deny user=%[un method=%rm host=%>rd port=%>rP result=" squid && lib.hasInfix "logformat would_deny would_deny user=%[un method=%rm host=%>rd port=%>rP result=" squid
&& lib.hasInfix "access_log syslog:daemon.info squid !manager" squid; && lib.hasInfix "access_log syslog:daemon.info squid !manager" squid;
} }