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configs.monitoring: alert on low free space on neoprism /var/download
author
Hermes
committer
lassulus
date
(Oct 14, 2026, 4:43 PM CEST)
commit
8efe19f1
8efe19f14d45c94afbaeadbbeae6ca80971e32e7
parent
97a2c0a5
97a2c0a59db6b377e967cbe2b868b80f6882eda0
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configs/monitoring/alerts.nix
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configs/monitoring/alerts.nix
···
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) alwaysOn) "0m" "{{ $labels.host }} sent no metrics for 10 minutes")
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# Network mounts (and their autofs placeholders) are reported by
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# every machine that mounts them; the agent drops tmpfs & co.
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# neoprism's /var/download is always above 90%, see DownloadSpace*.
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(alert "DiskAlmostFull"
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''host_filesystem_used_ratio{filesystem!~"cifs|smb3|nfs|nfs4|autofs|fuse.sshfs"} > 0.9''
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''host_filesystem_used_ratio{filesystem!~"cifs|smb3|nfs|nfs4|autofs|fuse.sshfs"} > 0.9 unless on (host, mountpoint) host_filesystem_used_ratio{host="neoprism",mountpoint="/var/download"}''
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"15m"
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"{{ $labels.host }}: {{ $labels.mountpoint }} is {{ $value | humanizePercentage }} full"
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)
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(alert "DownloadSpaceLow"
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''host_filesystem_free_bytes{host="neoprism",mountpoint="/var/download"} < 200e9''
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"15m"
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"{{ $labels.host }}: {{ $labels.mountpoint }} has only {{ $value | humanize }}B free"
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)
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(
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alert "DownloadSpaceCritical"
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''host_filesystem_free_bytes{host="neoprism",mountpoint="/var/download"} < 100e9''
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"15m"
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"{{ $labels.host }}: {{ $labels.mountpoint }} has only {{ $value | humanize }}B free"
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// {
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labels.severity = "critical";
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}
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)
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(alert "HighMemory" "1 - host_memory_available_bytes / host_memory_total_bytes > 0.95" "15m"
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"{{ $labels.host }} uses {{ $value | humanizePercentage }} of its memory"
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configs/monitoring/server.nix
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configs/monitoring/server.nix
···
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room-mapping.alerts = "\${MATRIX_ROOM_ID}";
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};
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templating.firing-template = ''
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<strong>{{ .Alert.Status | ToUpper }}</strong> {{ .Alert.Labels.alertname }}:
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{{ if eq .Alert.Labels.severity "critical" }}🚨 {{ end }}<strong>{{ .Alert.Status | ToUpper }}</strong> {{ .Alert.Labels.alertname }}:
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{{ .Alert.Annotations.summary }}
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'';
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}