PiKVM

Load TESmart KVM

1. Add or replace the file /etc/kvmd/override.yaml

   ---
   
   nginx:
     https:
       enabled: false
   
   kvmd:
     auth:
       enabled: false
     prometheus:
       auth:
         enabled: false
     streamer:
       desired_fps:
         default: 20
       h264_bitrate:
         default: 2500
       h264_gop:
         default: 30
       quality: 75
     gpio:
       drivers:
         tes:
           type: tesmart
           host: 192.168.1.10
           port: 5000
         wol_dev0:
           type: wol
           mac: 1c:69:7a:0d:8d:99
         wol_dev1:
           type: wol
           mac: 1c:69:7a:0e:f7:ed
         wol_dev2:
           type: wol
           mac: 1c:69:7a:0d:62:d4
         wol_dev3:
           type: wol
           mac: 94:c6:91:a7:7b:2b
         wol_dev4:
           type: wol
           mac: 94:c6:91:af:15:3d
         wol_dev5:
           type: wol
           mac: 1c:69:7a:09:bf:39
         reboot:
           type: cmd
           cmd: ["/usr/bin/sudo", "reboot"]
         restart_service:
           type: cmd
           cmd: ["/usr/bin/sudo", "systemctl", "restart", "kvmd"]
       scheme:
         dev0_led:
           driver: tes
           pin: 0
           mode: input
         dev0_btn:
           driver: tes
           pin: 0
           mode: output
           switch: false
         dev0_wol:
           driver: wol_dev0
           pin: 0
           mode: output
           switch: false
         dev1_led:
           driver: tes
           pin: 1
           mode: input
         dev1_btn:
           driver: tes
           pin: 1
           mode: output
           switch: false
         dev1_wol:
           driver: wol_dev1
           pin: 0
           mode: output
           switch: false
         dev2_led:
           driver: tes
           pin: 2
           mode: input
         dev2_btn:
           driver: tes
           pin: 2
           mode: output
           switch: false
         dev2_wol:
           driver: wol_dev2
           pin: 0
           mode: output
           switch: false
         dev3_led:
           driver: tes
           pin: 3
           mode: input
         dev3_btn:
           driver: tes
           pin: 3
           mode: output
           switch: false
         dev3_wol:
           driver: wol_dev3
           pin: 0
           mode: output
           switch: false
         dev4_led:
           driver: tes
           pin: 4
           mode: input
         dev4_btn:
           driver: tes
           pin: 4
           mode: output
           switch: false
         dev4_wol:
           driver: wol_dev4
           pin: 0
           mode: output
           switch: false
         dev5_led:
           driver: tes
           pin: 5
           mode: input
         dev5_btn:
           driver: tes
           pin: 5
           mode: output
           switch: false
         dev5_wol:
           driver: wol_dev5
           pin: 0
           mode: output
           switch: false
         dev6_led:
           driver: tes
           pin: 6
           mode: input
         dev6_btn:
           driver: tes
           pin: 6
           mode: output
           switch: false
         dev7_led:
           driver: tes
           pin: 7
           mode: input
         dev7_btn:
           driver: tes
           pin: 7
           mode: output
           switch: false
         reboot_button:
           driver: reboot
           pin: 0
           mode: output
           switch: false
         restart_service_button:
           driver: restart_service
           pin: 0
           mode: output
           switch: false
       view:
         header:
           title: Devices
         table:
           - ["#pikvm", "pikvm_led|green", "restart_service_button|confirm|Service", "reboot_button|confirm|Reboot"]
           - ["#0", "dev0_led", "dev0_btn | KVM", "dev0_wol | WOL"]
           - ["#1", "dev1_led", "dev1_btn | KVM", "dev1_wol | WOL"]
           - ["#2", "dev2_led", "dev2_btn | KVM", "dev2_wol | WOL"]
           - ["#3", "dev3_led", "dev3_btn | KVM", "dev3_wol | WOL"]
           - ["#4", "dev4_led", "dev4_btn | KVM", "dev4_wol | WOL"]
           - ["#5", "dev5_led", "dev5_btn | KVM", "dev5_wol | WOL"]
           - ["#6", "dev6_led", "dev6_btn | KVM"]
           - ["#7", "dev7_led", "dev7_btn | KVM"]
   

2. Restart kvmd

   systemctl restart kvmd.service
   

Monitoring

Install node-exporter

pacman -S prometheus-node-exporter
systemctl enable --now prometheus-node-exporter

Install promtail

1. Install promtail

   pacman -S promtail
   systemctl enable promtail
   

2. Override the promtail systemd service

   mkdir -p /etc/systemd/system/promtail.service.d/
   cat >/etc/systemd/system/promtail.service.d/override.conf <<EOL
   [Service]
   Type=simple
   ExecStart=
   ExecStart=/usr/bin/promtail -config.file /etc/loki/promtail.yaml
   EOL
   

3. Add or replace the file /etc/loki/promtail.yaml

   server:
     log_level: info
     disable: true
   
   client:
     url: "https://loki.devbu.io/loki/api/v1/push"
   
   positions:
     filename: /tmp/positions.yaml
   
   scrape_configs:
     - job_name: journal
       journal:
         path: /run/log/journal
         max_age: 12h
         labels:
           job: systemd-journal
       relabel_configs:
         - source_labels: ["__journal__systemd_unit"]
           target_label: unit
         - source_labels: ["__journal__hostname"]
           target_label: hostname
   

4. Start promtail

   systemctl daemon-reload
   systemctl enable --now promtail.service