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docs(admin): add ops documentation and fix hermes dashboard service
- Remove admin/ from .gitignore (repo is now private) - Add --tui flag to hermes-dashboard.service template - Document hermes-tui wrapper, dashboard access, TUI usage Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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admin/systeme.md
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admin/systeme.md
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# Système — AlmaLinux 9
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Commandes générales applicables sur storage-01 et gpu-01.
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---
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## Services systemd
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```bash
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# Statut d'un service
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sudo systemctl status <service>
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# Démarrer / arrêter / redémarrer
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sudo systemctl start <service>
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sudo systemctl stop <service>
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sudo systemctl restart <service>
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sudo systemctl reload <service> # rechargement config sans coupure
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# Activer / désactiver au démarrage
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sudo systemctl enable <service>
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sudo systemctl disable <service>
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# Lister tous les services actifs
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sudo systemctl list-units --type=service --state=running
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```
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### Services clés par machine
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| Machine | Service | Rôle |
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|---|---|---|
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| storage-01 | `nftables` | Firewall + NAT masquerade cluster → WAN |
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| storage-01 | `dnsmasq` | DNS local lab.local |
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| storage-01 | `chronyd` | NTP |
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| storage-01 | `sshd` | SSH |
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| storage-01 | `hermes-agent` | Agent IA (gateway + cron) |
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| gpu-01 | `chronyd` | NTP |
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| gpu-01 | `sshd` | SSH |
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| gpu-01 | `llama-server` | Inférence LLM — Qwen2.5-7B via ROCm 7.x |
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---
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## Logs
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```bash
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# Logs d'un service en temps réel
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sudo journalctl -u <service> -f
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# Logs depuis X minutes
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sudo journalctl -u <service> --since '30 minutes ago'
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# Logs kernel (erreurs matériel, OOM killer...)
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sudo journalctl -k
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# Logs du démarrage
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sudo journalctl -b
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```
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---
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## Ressources système
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```bash
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# CPU / RAM / swap
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free -h
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top
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htop # plus lisible (installé via EPEL)
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# Disques
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df -h
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lsblk
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# Processus gourmands
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ps aux --sort=-%mem | head -10
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ps aux --sort=-%cpu | head -10
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```
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---
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## Réseau (NetworkManager)
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```bash
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# Lister les connexions
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nmcli con show
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# Détails d'une interface (IP, DNS, gateway)
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nmcli dev show enp4s0
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# Modifier le DNS d'une interface
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sudo nmcli con mod enp4s0 ipv4.dns '192.168.10.1'
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sudo nmcli con up enp4s0
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# Voir le resolv.conf généré
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cat /etc/resolv.conf
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```
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---
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## Mises à jour
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```bash
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# Voir les mises à jour disponibles
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sudo dnf check-update
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# Appliquer les mises à jour via Ansible (recommandé — reboot automatique si nouveau kernel)
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cd /mnt/nvme0n1/nvme0n1p3/Projets/lab/ansible
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../.venv/bin/ansible-playbook -i inventory.yml playbooks/site.yml --tags update
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# Manuellement sur une machine
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sudo dnf update -y
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```
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> **Attention post-reboot RAID5** : vérifier que dnsmasq est démarré
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> (`systemctl status dnsmasq`). Si `failed`, voir `admin/dnsmasq.md`.
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> Les `.pyc` Python peuvent être corrompus sur reboot non-propre —
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> symptôme : `bad marshal data` dans les logs d'une app Python.
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---
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## Infos système rapides
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```bash
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# Version OS
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cat /etc/os-release
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# Hostname
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hostname
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# Uptime
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uptime
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# Infos CPU
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lscpu | grep -E "Model name|Socket|Core|Thread"
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# RAM totale
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free -h | head -2
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```
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