Zyxel USG210: Networkmonitoring with Munin

Veröffentlicht am 2021-10-012023-08-04 von Gerald

Install Munin first then enable SNMP on UDP port 161, set the SNMPv2c Get Community to public and click Apply.

Portscan

Check if SNMP is running, assuming that the Zyxel USG210 is named gateway with IP address 10.11.12.13

nmap -sU -p 161 gateway

Starting Nmap 7.80 ( https://nmap.org ) at 2023-07-04 09:53 CEST
Nmap scan report for gateway (10.11.12.13)
Host is up (0.0029s latency).
rDNS record for 10.11.12.13: gateway.domain.xx

PORT    STATE SERVICE
161/udp open  snmp
MAC Address: 00:19:CB:00:00:00 (Zyxel Communications)

Nmap done: 1 IP address (1 host up) scanned in 0.37 seconds

munin.conf

Add FQDN to munin.conf, use 127.0.01 as IP address

vi /etc/munin/munin.conf

[gateway.domain.xx]
        address 127.0.0.1
        use_node_name no

plugin-conf.d

Create a file in this folder and add SNMP-community, SNMP port, IP address and SNMP version

vi /etc/munin/plugin-conf.d/gateway.domain.xx

[snmp_gateway.domain.xx]
        env.community public
        env.port 161
        env.ip 10.11.12.13
        env.version 2

Restart Munin

service munin restart

munin-node-configure

Find out which metrics are available

munin-node-configure --snmp gateway.domain.xx --snmpcommunity public

Plugin                     | Used | Suggestions
------                     | ---- | -----------
snmp__cpuload              | yes  | yes (gateway.domain.xx)
snmp__df                   | no   | yes (+gateway.domain.xx)
snmp__df_ram               | yes  | yes (gateway.domain.xx)
snmp__fc_if_               | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__fc_if_err_           | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__if_                  | yes  | yes (gateway.domain.xx/1 gateway.domain.xx/17 gateway.domain.xx/18 gateway.domain.xx/19 gateway.domain.xx/2 gateway.domain.xx/20 gateway.domain.xx/21 gateway.domain.xx/3)
snmp__if_err_              | yes  | yes (gateway.domain.xx/1 gateway.domain.xx/17 gateway.domain.xx/18 gateway.domain.xx/19 gateway.domain.xx/2 gateway.domain.xx/20 gateway.domain.xx/21 gateway.domain.xx/24 gateway.domain.xx/25 gateway.domain.xx/26 gateway.domain.xx/27 gateway.domain.xx/3 +gateway.domain.xx/28 +gateway.domain.xx/29)
snmp__if_multi             | yes  | yes (gateway.domain.xx)
snmp__load                 | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__memory               | yes  | yes (gateway.domain.xx)
snmp__netapp_diskusage_    | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__netapp_inodeusage_   | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__netstat              | yes  | yes (gateway.domain.xx)
snmp__print_pages          | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__print_supplies       | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__processes            | yes  | yes (gateway.domain.xx)
snmp__rdp_users            | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_fsc_bx_fan   | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_fsc_bx_temp  | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_fsc_fan      | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_fsc_temp     | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_mbm_fan      | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_mbm_temp     | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__sensors_mbm_volt     | no   | no [[[ plugin has neither autoconf not suggest support ]]]
snmp__swap                 | no   | yes (+gateway.domain.xx)
snmp__uptime               | yes  | yes (gateway.domain.xx)
snmp__users                | yes  | yes (gateway.domain.xx)
snmp__winload              | yes  | yes (gateway.domain.xx)
snmp__winmem               | yes  | yes (gateway.domain.xx)

Create Symlinks

munin-node-configure --snmp gateway.domain.xx --snmpcommunity public -shell

ln -s '/usr/share/munin/plugins/snmp__df' '/etc/munin/plugins/snmp_gateway.domain.xx_df'
.
.
.

Finished!

Restart Munin

service munin restart