2026-10-07 21:20:01 +02:00
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groups:
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- name: syllabus
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rules:
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- alert: DisqueSature
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expr: 100 - (node_filesystem_avail_bytes{mountpoint="/",fstype!="tmpfs"} / node_filesystem_size_bytes{mountpoint="/",fstype!="tmpfs"} * 100) > 80
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for: 5m
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labels:
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severite: avertissement
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annotations:
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summary: "Disque / rempli a plus de 80%"
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description: "Occupation du disque racine superieure a 80% depuis plus de 5 minutes."
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- alert: MemoireSaturee
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expr: (1 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)) * 100 > 90
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for: 5m
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labels:
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severite: avertissement
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annotations:
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summary: "RAM utilisee a plus de 90%"
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description: "Memoire disponible inferieure a 10% depuis plus de 5 minutes."
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- alert: ServiceOpenStackArrete
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expr: openstack_nova_agent_state == 0 or openstack_neutron_agent_state == 0
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for: 2m
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labels:
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severite: critique
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annotations:
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summary: "Un agent OpenStack est arrete"
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description: "Un agent Nova ou Neutron signale un etat different de UP depuis plus de 2 minutes."
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2026-10-09 10:39:50 +02:00
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- alert: CertificatExpireBientot
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expr: (syllabus_certificat_expiration_timestamp - time()) < 14 * 86400
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for: 1h
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labels:
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severite: critique
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annotations:
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summary: "Le certificat HTTPS de {{ $labels.domaine }} expire dans moins de 14 jours"
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description: "Le renouvellement automatique (certbot.timer) a echoue : voir docs/runbooks/https.md."
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- alert: CertificatNonMesure
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expr: absent(syllabus_certificat_expiration_timestamp)
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for: 2d
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labels:
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severite: avertissement
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annotations:
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summary: "L'expiration du certificat HTTPS n'est plus mesuree"
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description: "Le fichier certificat.prom du collecteur textfile n'est plus produit : verifier le cron syllabus-expiration-certificat."
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2026-10-09 17:28:50 +02:00
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- alert: RestaurationNonTestee
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expr: (time() - syllabus_derniere_restauration_reussie_timestamp) > 8 * 86400
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for: 1h
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labels:
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severite: avertissement
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annotations:
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summary: "Aucun test de restauration du portail reussi depuis plus de 8 jours"
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description: "Voir journalctl -u syllabus-test-restauration et docs/runbooks/sauvegardes.md."
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2026-10-07 21:20:01 +02:00
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- alert: SauvegardeAncienne
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expr: (time() - syllabus_derniere_sauvegarde_reussie_timestamp) > 26 * 3600
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for: 10m
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labels:
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severite: critique
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annotations:
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summary: "Derniere sauvegarde reussie il y a plus de 26h"
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description: "Le timer de sauvegarde Dedibackup n'a pas reussi depuis plus de 26 heures : verifier /root/.dedibackup et le journal du service."
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