Version vom 11. Mai 2019, 19:01 Uhr

Übersicht

NetJSON ist ein JSON-basiertes Datenformat (RFC http://netjson.org/rfc.html) zu Repräsentation eines Netzwerks und seine Geräte. Ziele sind:

• einheitliche Darstellung
• die Konfiguration der Geräte zu repräsentieren
• Monitoring Daten zu transportieren
• Topologiedaten zu ermitteln
• in einem abstrakten JSON Format Daten speichern und in konkrete Implementierungen transformieren

Es ist beispielweise möglich im NetJSON Format die Konfiguration von vielen unterschiedlichen Netzwerkgeräten unterschiedlicher Hersteller zu speichern.

Configuration Management

Aktiv wird netjsonconfig im Rahmen des OpenWisp Projekts genutzt. Hier wird die Konfiguration aus vielen Geräten ausgerollt. Hier gibt es OpenWRT, OpenVPN und experimentellen AirOS Support.

Monitoring

Für Monitoring scheint NetJSON noch nicht im großen Stil genutzt zu werden. Es gibt nur wenige Tools hier.

Es gab 2017 ein sehr interessantes Google Summer of code Projekt: http://netjson.org/docs/gsoc-2017.html#implement-netjson-devicemonitoring-in-ubus-openwrt-lede . Leider wurde dies nie umgesetzt.

Opennet

In Opennet haben wir mehrere denkbare Möglichkeiten zur Nutzung. Beispielsweise:

• Derzeit nutzen wir für das Monitoring das on_dataservice olsrv1 Plugin. Mit NetJSON könnte man hier mehr Standardisierung schaffen. Es wäre die Hoffnung, dass auch fertige Tools hier verfügbar sind.
• Von Opennet Knoten die Config in NetJSON abspeichern, sodass die Konfiguration auf einfache Art und Weise in ein neues Gerät eingespielt werden können.

on_dataservice (Monitoring)

TODO

• Welche Daten gibt es derzeit in on_dataservice?
• Gibt es diese bereits in NetJSON?

Folgendes reales Beispiel der on_dataservice Daten gibt es:

	[
	  {
	    "ifaces": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "if_name": "wlan0",
	      "if_type_bridge": "",
	      "if_type_bridgedif": "0",
	      "if_hwaddr": "44:d9:e7:54:ee:d2",
	      "ip_label": "wlan0",
	      "ip_addr": "192.168.2.50/16 fe80::46d9:e7ff:fe54:eed2/64",
	      "ip_broadcast": "192.168.255.255",
	      "on_networks": "",
	      "on_zones": "",
	      "on_olsr": "1",
	      "dhcp_start": "",
	      "dhcp_limit": "",
	      "dhcp_leasetime": "",
	      "dhcp_fwd": "",
	      "ifstat_collisions": "0",
	      "ifstat_rx_compressed": "0",
	      "ifstat_rx_errors": "0",
	      "ifstat_rx_length_errors": "0",
	      "ifstat_rx_packets": "948338",
	      "ifstat_tx_carrier_errors": "0",
	      "ifstat_tx_errors": "0",
	      "ifstat_tx_packets": "638845",
	      "ifstat_multicast": "0",
	      "ifstat_rx_crc_errors": "0",
	      "ifstat_rx_fifo_errors": "0",
	      "ifstat_rx_missed_errors": "0",
	      "ifstat_tx_aborted_errors": "0",
	      "ifstat_tx_compressed": "0",
	      "ifstat_tx_fifo_errors": "0",
	      "ifstat_tx_window_errors": "0",
	      "ifstat_rx_bytes": "1091373999",
	      "ifstat_rx_dropped": "0",
	      "ifstat_rx_frame_errors": "0",
	      "ifstat_rx_over_errors": "0",
	      "ifstat_tx_bytes": "218444449",
	      "ifstat_tx_dropped": "0",
	      "ifstat_tx_heartbeat_errors": "0",
	      "wlan_essid": "Rundstrahler-Z10.on-i.de",
	      "wlan_apmac": "44:D9:E7:54:EE:D2",
	      "wlan_type": "nl80211",
	      "wlan_hwmode": "802.11an",
	      "wlan_mode": "Client",
	      "wlan_channel": "44",
	      "wlan_freq": "5.220",
	      "wlan_txpower": "20",
	      "wlan_signal": "-68",
	      "wlan_noise": "-95",
	      "wlan_bitrate": "39.0",
	      "wlan_crypt": "          none",
	      "wlan_vaps": "yes",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  },
	  {
	    "ifaces": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "if_name": "eth0",
	      "if_type_bridge": "",
	      "if_type_bridgedif": "0",
	      "if_hwaddr": "44:d9:e7:55:ee:d2",
	      "ip_label": "",
	      "ip_addr": "fe80::46d9:e7ff:fe55:eed2/64",
	      "ip_broadcast": "",
	      "on_networks": "",
	      "on_zones": "",
	      "on_olsr": "0",
	      "dhcp_start": "",
	      "dhcp_limit": "",
	      "dhcp_leasetime": "",
	      "dhcp_fwd": "",
	      "ifstat_collisions": "0",
	      "ifstat_rx_compressed": "0",
	      "ifstat_rx_errors": "0",
	      "ifstat_rx_length_errors": "0",
	      "ifstat_rx_packets": "417555",
	      "ifstat_tx_carrier_errors": "0",
	      "ifstat_tx_errors": "0",
	      "ifstat_tx_packets": "673210",
	      "ifstat_multicast": "0",
	      "ifstat_rx_crc_errors": "0",
	      "ifstat_rx_fifo_errors": "0",
	      "ifstat_rx_missed_errors": "0",
	      "ifstat_tx_aborted_errors": "0",
	      "ifstat_tx_compressed": "0",
	      "ifstat_tx_fifo_errors": "0",
	      "ifstat_tx_window_errors": "0",
	      "ifstat_rx_bytes": "40007025",
	      "ifstat_rx_dropped": "0",
	      "ifstat_rx_frame_errors": "0",
	      "ifstat_rx_over_errors": "0",
	      "ifstat_tx_bytes": "773783629",
	      "ifstat_tx_dropped": "0",
	      "ifstat_tx_heartbeat_errors": "0",
	      "wlan_essid": "",
	      "wlan_apmac": "",
	      "wlan_type": "",
	      "wlan_hwmode": "",
	      "wlan_mode": "",
	      "wlan_channel": "",
	      "wlan_freq": "",
	      "wlan_txpower": "",
	      "wlan_signal": "",
	      "wlan_noise": "",
	      "wlan_bitrate": "",
	      "wlan_crypt": "",
	      "wlan_vaps": "",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  },
	  {
	    "ifaces": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "if_name": "br-lan",
	      "if_type_bridge": "eth0.1",
	      "if_type_bridgedif": "0",
	      "if_hwaddr": "44:d9:e7:55:ee:d2",
	      "ip_label": "br-lan",
	      "ip_addr": "172.16.0.1/24 fddc:6e66:be51::1/60 fe80::46d9:e7ff:fe55:eed2/64",
	      "ip_broadcast": "172.16.0.255",
	      "on_networks": "",
	      "on_zones": "lan",
	      "on_olsr": "0",
	      "dhcp_start": "",
	      "dhcp_limit": "",
	      "dhcp_leasetime": "",
	      "dhcp_fwd": "",
	      "ifstat_collisions": "0",
	      "ifstat_rx_compressed": "0",
	      "ifstat_rx_errors": "0",
	      "ifstat_rx_length_errors": "0",
	      "ifstat_rx_packets": "417553",
	      "ifstat_tx_carrier_errors": "0",
	      "ifstat_tx_errors": "0",
	      "ifstat_tx_packets": "662705",
	      "ifstat_multicast": "0",
	      "ifstat_rx_crc_errors": "0",
	      "ifstat_rx_fifo_errors": "0",
	      "ifstat_rx_missed_errors": "0",
	      "ifstat_tx_aborted_errors": "0",
	      "ifstat_tx_compressed": "0",
	      "ifstat_tx_fifo_errors": "0",
	      "ifstat_tx_window_errors": "0",
	      "ifstat_rx_bytes": "32490951",
	      "ifstat_rx_dropped": "0",
	      "ifstat_rx_frame_errors": "0",
	      "ifstat_rx_over_errors": "0",
	      "ifstat_tx_bytes": "767549039",
	      "ifstat_tx_dropped": "0",
	      "ifstat_tx_heartbeat_errors": "0",
	      "wlan_essid": "",
	      "wlan_apmac": "",
	      "wlan_type": "",
	      "wlan_hwmode": "",
	      "wlan_mode": "",
	      "wlan_channel": "",
	      "wlan_freq": "",
	      "wlan_txpower": "",
	      "wlan_signal": "",
	      "wlan_noise": "",
	      "wlan_bitrate": "",
	      "wlan_crypt": "",
	      "wlan_vaps": "",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  },
	  {
	    "ifaces": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "if_name": "eth0.2",
	      "if_type_bridge": "",
	      "if_type_bridgedif": "0",
	      "if_hwaddr": "44:d9:e7:55:ee:d2",
	      "ip_label": "",
	      "ip_addr": "fe80::46d9:e7ff:fe55:eed2/64",
	      "ip_broadcast": "",
	      "on_networks": "",
	      "on_zones": "",
	      "on_olsr": "0",
	      "dhcp_start": "",
	      "dhcp_limit": "",
	      "dhcp_leasetime": "",
	      "dhcp_fwd": "",
	      "ifstat_collisions": "0",
	      "ifstat_rx_compressed": "0",
	      "ifstat_rx_errors": "0",
	      "ifstat_rx_length_errors": "0",
	      "ifstat_rx_packets": "0",
	      "ifstat_tx_carrier_errors": "0",
	      "ifstat_tx_errors": "0",
	      "ifstat_tx_packets": "10493",
	      "ifstat_multicast": "0",
	      "ifstat_rx_crc_errors": "0",
	      "ifstat_rx_fifo_errors": "0",
	      "ifstat_rx_missed_errors": "0",
	      "ifstat_tx_aborted_errors": "0",
	      "ifstat_tx_compressed": "0",
	      "ifstat_tx_fifo_errors": "0",
	      "ifstat_tx_window_errors": "0",
	      "ifstat_rx_bytes": "0",
	      "ifstat_rx_dropped": "0",
	      "ifstat_rx_frame_errors": "0",
	      "ifstat_rx_over_errors": "0",
	      "ifstat_tx_bytes": "3540798",
	      "ifstat_tx_dropped": "0",
	      "ifstat_tx_heartbeat_errors": "0",
	      "wlan_essid": "",
	      "wlan_apmac": "",
	      "wlan_type": "",
	      "wlan_hwmode": "",
	      "wlan_mode": "",
	      "wlan_channel": "",
	      "wlan_freq": "",
	      "wlan_txpower": "",
	      "wlan_signal": "",
	      "wlan_noise": "",
	      "wlan_bitrate": "",
	      "wlan_crypt": "",
	      "wlan_vaps": "",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  },
	  {
	    "ifaces": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "if_name": "tun-on-user",
	      "if_type_bridge": "",
	      "if_type_bridgedif": "0",
	      "if_hwaddr": "",
	      "ip_label": "tun-on-user",
	      "ip_addr": "10.1.16.198 fe80::7ced:f2a8:2978:14ee/64",
	      "ip_broadcast": "10.1.16.197/32",
	      "on_networks": "",
	      "on_zones": "",
	      "on_olsr": "0",
	      "dhcp_start": "",
	      "dhcp_limit": "",
	      "dhcp_leasetime": "",
	      "dhcp_fwd": "",
	      "ifstat_collisions": "0",
	      "ifstat_rx_compressed": "0",
	      "ifstat_rx_errors": "0",
	      "ifstat_rx_length_errors": "0",
	      "ifstat_rx_packets": "30197",
	      "ifstat_tx_carrier_errors": "0",
	      "ifstat_tx_errors": "0",
	      "ifstat_tx_packets": "34605",
	      "ifstat_multicast": "0",
	      "ifstat_rx_crc_errors": "0",
	      "ifstat_rx_fifo_errors": "0",
	      "ifstat_rx_missed_errors": "0",
	      "ifstat_tx_aborted_errors": "0",
	      "ifstat_tx_compressed": "0",
	      "ifstat_tx_fifo_errors": "0",
	      "ifstat_tx_window_errors": "0",
	      "ifstat_rx_bytes": "3654897",
	      "ifstat_rx_dropped": "0",
	      "ifstat_rx_frame_errors": "0",
	      "ifstat_rx_over_errors": "0",
	      "ifstat_tx_bytes": "3374529",
	      "ifstat_tx_dropped": "0",
	      "ifstat_tx_heartbeat_errors": "0",
	      "wlan_essid": "",
	      "wlan_apmac": "",
	      "wlan_type": "",
	      "wlan_hwmode": "",
	      "wlan_mode": "",
	      "wlan_channel": "",
	      "wlan_freq": "",
	      "wlan_txpower": "",
	      "wlan_signal": "",
	      "wlan_noise": "",
	      "wlan_bitrate": "",
	      "wlan_crypt": "",
	      "wlan_vaps": "",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  },
	  {
	    "ifaces": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "if_name": "eth0.1",
	      "if_type_bridge": "",
	      "if_type_bridgedif": "1",
	      "if_hwaddr": "44:d9:e7:55:ee:d2",
	      "ip_label": "",
	      "ip_addr": "",
	      "ip_broadcast": "",
	      "on_networks": "",
	      "on_zones": "",
	      "on_olsr": "0",
	      "dhcp_start": "",
	      "dhcp_limit": "",
	      "dhcp_leasetime": "",
	      "dhcp_fwd": "",
	      "ifstat_collisions": "0",
	      "ifstat_rx_compressed": "0",
	      "ifstat_rx_errors": "0",
	      "ifstat_rx_length_errors": "0",
	      "ifstat_rx_packets": "417557",
	      "ifstat_tx_carrier_errors": "0",
	      "ifstat_tx_errors": "0",
	      "ifstat_tx_packets": "662708",
	      "ifstat_multicast": "55",
	      "ifstat_rx_crc_errors": "0",
	      "ifstat_rx_fifo_errors": "0",
	      "ifstat_rx_missed_errors": "0",
	      "ifstat_tx_aborted_errors": "0",
	      "ifstat_tx_compressed": "0",
	      "ifstat_tx_fifo_errors": "0",
	      "ifstat_tx_window_errors": "0",
	      "ifstat_rx_bytes": "32491179",
	      "ifstat_rx_dropped": "0",
	      "ifstat_rx_frame_errors": "0",
	      "ifstat_rx_over_errors": "0",
	      "ifstat_tx_bytes": "767549798",
	      "ifstat_tx_dropped": "0",
	      "ifstat_tx_heartbeat_errors": "0",
	      "wlan_essid": "",
	      "wlan_apmac": "",
	      "wlan_type": "",
	      "wlan_hwmode": "",
	      "wlan_mode": "",
	      "wlan_channel": "",
	      "wlan_freq": "",
	      "wlan_txpower": "",
	      "wlan_signal": "",
	      "wlan_noise": "",
	      "wlan_bitrate": "",
	      "wlan_crypt": "",
	      "wlan_vaps": "",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  },
	  {
	    "nodes": {
	      "originator": "",
	      "on_olsr_mainip": "192.168.2.50",
	      "on_ipv6_mainip": "fd32:d8d3:87da::44d9:e7ff:fe54:eed2",
	      "sys_ver": "Linux 4.14.111",
	      "sys_board": "Atheros AR9342 rev 2 Ubiquiti Nanostation M XW",
	      "sys_cpu": "MIPS 74Kc V4.12",
	      "sys_mem": "60168",
	      "sys_uptime": "30737.31",
	      "sys_load": "3.51 3.52 3.46",
	      "sys_free": "20544",
	      "sys_watchdog": "0",
	      "sys_os_type": "OpenWrt",
	      "sys_os_name": "OpenWrt",
	      "sys_os_rel": "0.5.5-unstable-2558-12d53ce2",
	      "sys_os_ver": "197-r9851-d1739c6c9a",
	      "sys_os_arc": "mips_24kc",
	      "sys_os_insttime": "1554898613",
	      "on_core_ver": "0.5.5-unstable-2558-12d53ce2",
	      "on_core_insttime": "1554898613",
	      "on_packages": "on-certificates on-openvpn on-olsr2",
	      "on_id": "2.50",
	      "on_olsrd_status": "1",
	      "on_wifidog_status": "",
	      "on_wifidog_id": "",
	      "on_vpn_cn": "2.50.aps.on",
	      "on_vpn_status": "1",
	      "on_vpn_gw": "192.168.2.166",
	      "on_vpn_autosearch": "1",
	      "on_vpn_sort": "etx",
	      "on_vpn_gws": "192.168.0.245:true:55 192.168.1.220:: 192.168.1.31:: 192.168.1.221:: 192.168.2.254:: 192.168.2.230:: 192.168.2.80:: 192.168.2.146:: 192.168.2.247:: 192.168.3.30:: 192.168.3.4:: 192.168.2.140:: 192.168.1.120:true:66 192.168.1.31:: 192.168.3.97:: 192.168.1.221:: 192.168.2.254:: 192.168.2.230:: 192.168.2.146:: 192.168.3.30:: 192.168.1.45:: 192.168.3.4:: 192.168.2.147:true:14 192.168.3.56:: 192.168.2.140:: 192.168.2.189:true:196 192.168.2.165:: 192.168.0.247:true:51 192.168.3.97:: 192.168.2.254:true:26 192.168.2.230:: 192.168.2.146:: 192.168.3.98:: 192.168.3.86:: 192.168.1.45:: 192.168.3.4:: 192.168.2.147:true:11 192.168.2.209:: 192.168.3.56:: 192.168.2.140:: 192.168.1.120:true:60 192.168.2.189:: 192.168.2.165:: 192.168.3.97:: 192.168.1.40:: 192.168.1.17:: 192.168.2.166:true:6 192.168.3.98:: 192.168.3.86:: 192.168.1.45:: 192.168.2.147:true:21 192.168.3.16:: 192.168.2.209:: 192.168.1.94:: 192.168.3.56:: 192.168.2.101:: 192.168.2.189:true:41 192.168.2.165:: 192.168.3.58:: 192.168.1.40:: 192.168.1.17:: 192.168.3.98:: 192.168.3.86:: 192.168.2.190:: 192.168.1.170:: 192.168.1.135:: 192.168.3.16:: 192.168.2.209:: 192.168.2.101:: 192.168.2.246:: 192.168.1.189:false:55 192.168.3.58:: 192.168.1.40:: 192.168.1.17:: 192.168.2.166:true:29 192.168.2.190:true:35 192.168.1.170:: 192.168.1.135:: 192.168.3.16:: 192.168.1.220:: 192.168.2.101:: 192.168.2.246:: 192.168.2.80:: 192.168.1.189:false:55 192.168.2.247:: 192.168.3.58:: 192.168.2.190:true:44 192.168.1.170:: 192.168.1.135:: 192.168.1.220:: 192.168.1.31:: 192.168.1.221:: 192.168.2.246:: 192.168.2.80:: 192.168.1.189:false:56 192.168.2.247:: 192.168.3.30::",
	      "on_vpn_blist": "",
	      "on_ugw_status": "",
	      "on_ugw_enabled": "",
	      "on_ugw_possible": "",
	      "on_ugw_tunnel": "",
	      "on_ugw_connected": "",
	      "on_ugw_presetips": "",
	      "on_ugw_presetnames": "",
	      "on_old_autoadapttxpwr": "",
	      "on_old_remoteconf": "",
	      "db_time": "Sat May 11 05:38:03 CEST 2019",
	      "db_epoch": "1557545828",
	      "db_ver": "0.2",
	      "db_update": "1557545828"
	    }
	  }
	]

Tools

TODO

• Welche Tools gibt es bereits für NetJSON?
• Was können diese Tools? (Bspw. Generieren von NetJSON in OpenWrt?)
• Können wir diese nutzen?