You will probably need to have a good understanding of SNMP and MIBs in order create new generator configs. Unfortunately, the Synology MIBs have a large number of mistakes, making it even harder to work with.
I created a simple example of how to use the generator based on what I found in the SYNOLOGY-RAID-MIB. https://github.com/SuperQ/tools/tree/master/snmp_exporter/Synology I corrected as many of the errors as I could, but Synology didn't format the raidStatus as an ENUM. On Fri, Aug 21, 2020 at 3:46 PM Mario Pranjic <[email protected]> wrote: > Hi Ben, > > Community string was wrong. I fixed that. Now I can tell snmp_exporter can > communicate properly. > > I can get in Prometheus: sysUpTime{instance="192.168.10.187",job="snmp"} > And value is read from the device (incrementing on refresh too). > > But as for mibs, I still can't use mibs as described in the Synology snmp > guide. > > https://global.download.synology.com/download/Document/Software/DeveloperGuide/Firmware/DSM/All/enu/Synology_DiskStation_MIB_Guide.pdf > > There is still a step missing in the snmp_exporter role in regards to mibs > and/or proper snmp.yml generation. > > Best regards, > > Mario. > > fre. 21. aug. 2020 kl. 15:28 skrev Ben Kochie <[email protected]>: > >> The SNMP exporter uses UDP for transport, so telnet to 161 isn't going to >> help much. I've seen very few devices implement RFC 3430. >> >> There are usually two problems people run into. >> * The community string is wrong (defaults to "public") >> * The device has a management IP control and won't allow traffic. >> >> SNMP implementations generally don't reject incorrect authentication, >> rather they simply drop the packets. So it can be hard to diagnose. >> >> On Fri, Aug 21, 2020 at 2:52 PM Mario Pranjic <[email protected]> >> wrote: >> >>> Hi Ben, >>> >>> I ran another VM and used roles: >>> - https://github.com/cloudalchemy/ansible-snmp-exporter >>> - https://github.com/cloudalchemy/ansible-prometheus >>> >>> along with Grafana. Prometheus, node.exporter and Grafana work as >>> intended (as before). >>> >>> However, when I try to enable snmp_exporter: >>> - job_name: snmp >>> metrics_path: /snmp >>> params: >>> module: >>> - if_mib >>> relabel_configs: >>> - source_labels: >>> - __address__ >>> target_label: __param_target >>> - source_labels: >>> - __param_target >>> target_label: instance >>> - replacement: 127.0.0.1:9116 >>> target_label: __address__ >>> static_configs: >>> - targets: >>> - 192.168.10.187 >>> >>> I get error in syslog: >>> Aug 21 14:43:23 monnew snmp_exporter[363]: level=info >>> ts=2020-08-21T12:43:23.189Z caller=collector.go:224 module=if_mib >>> target=192.168.10.187 msg="Error scraping target" err="scrape canceled >>> (possible timeout) getting target 192.168.10.187" >>> >>> snmp is enabled on device on 192.168.10.187. I tried snmp version 2c and >>> 3 but the error message is the same. I can connect on that IP:port from >>> prometheus/snmp_exporter node: >>> root@monnew:~# telnet 192.168.10.187 161 >>> Trying 192.168.10.187... >>> Connected to 192.168.10.187. >>> Escape character is '^]'. >>> >>> >>> Port 9116 is opened on localhost on prometheus/snmp_exporter node: >>> root@monnew:/etc/snmp_exporter# netstat -na|grep 9116 >>> tcp 0 0 127.0.0.1:35274 127.0.0.1:9116 >>> ESTABLISHED >>> tcp6 0 0 :::9116 :::* >>> LISTEN >>> tcp6 0 0 127.0.0.1:9116 127.0.0.1:35274 >>> ESTABLISHED >>> root@monnew:/etc/snmp_exporter# telnet 127.0.0.1 9116 >>> Trying 127.0.0.1... >>> Connected to 127.0.0.1. >>> Escape character is '^]'. >>> >>> What I am missing here is that generator thing. I didn't install >>> any mibs in this case, and, from what I see in Ansible role, no mibs or >>> generator has been set/run. >>> >>> Instead, snmp.yml file is being pulled from remote location: >>> "https://raw.githubusercontent.com/prometheus/snmp_exporter/v{{ >>> snmp_exporter_version }}/snmp.yml" >>> >>> Could you shed some light here, because I am obviously missing some step >>> along the way. >>> >>> Thanks in advance! >>> >>> Best regards, >>> >>> Mario. >>> >>> >>> fre. 21. aug. 2020 kl. 11:05 skrev Mario Pranjic < >>> [email protected]>: >>> >>>> Hm. >>>> >>>> I wrote the roles myself for Prometheus and Grafana but I used debian >>>> packages for Prometheus and external repository for Grafana. >>>> >>>> I am fully aware Debian often has older versions of packages (sometimes >>>> pretty old). To be able to use prometheus repository (as Grafana provides >>>> one), would make our lives a lot easier. :) >>>> >>>> I will look into these and see if things are better with newer versions. >>>> >>>> Thanks for the tip! >>>> >>>> Best regards, >>>> >>>> Mario. >>>> >>>> fre. 21. aug. 2020 kl. 10:42 skrev Ben Kochie <[email protected]>: >>>> >>>>> I highly recommend against using the Debian packages, as they are >>>>> extremely out of date. >>>>> >>>>> If you're using Ansible, you can use these high quality roles. >>>>> >>>>> https://github.com/cloudalchemy >>>>> >>>>> For example, https://github.com/cloudalchemy/ansible-prometheus >>>>> >>>>> We are planning an official Deb repo, but it's not ready yet. >>>>> >>>>> For the generator, it's going to be one thing you do need to build, >>>>> because it needs to be compiled with a distro specific net-snmp dev >>>>> package. >>>>> >>>>> On Fri, Aug 21, 2020, 10:37 Mario Pranjic <[email protected]> >>>>> wrote: >>>>> >>>>>> Hi Ben, >>>>>> I use versions available in Debian repository: >>>>>> ii prometheus 2.7.1+ds-3+b11 >>>>>> amd64 Monitoring system and time series database >>>>>> ii prometheus-alertmanager 0.15.3+ds-3+b1 >>>>>> amd64 Handle and deliver alerts created by Prometheus >>>>>> ii prometheus-node-exporter 0.17.0+ds-3+b11 >>>>>> amd64 Prometheus exporter for machine metrics >>>>>> ii prometheus-snmp-exporter 0.14.0+ds-1+b10 >>>>>> amd64 Prometheus exporter for SNMP-enabled devices >>>>>> >>>>>> I try building as little as possible since all provisioning is >>>>>> handled by Ansible at the end. >>>>>> >>>>>> If there is prometheus external repository for Debian, that could be >>>>>> worth checking, but I didn't find one. >>>>>> >>>>>> >>>>>> fre. 21. aug. 2020 kl. 10:25 skrev Ben Kochie <[email protected]>: >>>>>> >>>>>>> What version is this, it's likely out of date. I would recommend >>>>>>> building from source. >>>>>>> >>>>>>> On Thu, Aug 20, 2020, 21:11 Mario Polario <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> Hi, >>>>>>>> >>>>>>>> I am trying to set-up prometheus-snmp-exporter to collect data from >>>>>>>> my Synology NAS. >>>>>>>> I downloaded mibs (Synology mibs included) to /usr/share/snmp/mibs. >>>>>>>> >>>>>>>> When running prometheus-snmp-generator I get an error: >>>>>>>> >>>>>>>> root@monitoring:/etc/prometheus# prometheus-snmp-generator generate >>>>>>>> >>>>>>>> INFO[0000] Loading MIBs from >>>>>>>> $HOME/.snmp/mibs:/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp >>>>>>>> source="net_snmp.go:136" >>>>>>>> WARN[0000] NetSNMP reported 2 parse errors >>>>>>>> source="main.go:103" >>>>>>>> FATA[0000] Error parsing yml config: Invalid metric type override >>>>>>>> 'EnumAsInfo' source="main.go:44" >>>>>>>> >>>>>>>> >>>>>>>> I tried removing all from generator.yml except Synology module, but >>>>>>>> no change. >>>>>>>> >>>>>>>> I was following instructions noted >>>>>>>> in /usr/share/doc/prometheus-snmp-exporter/README.Debian but I can't >>>>>>>> seem >>>>>>>> to generate snmp.yml file. >>>>>>>> >>>>>>>> Any help in understanding what I did wrong is more than welcomed. >>>>>>>> >>>>>>>> Thanks in advance! >>>>>>>> >>>>>>>> Best regards, >>>>>>>> >>>>>>>> Mario. >>>>>>>> >>>>>>>> -- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "Prometheus Users" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to [email protected]. >>>>>>>> To view this discussion on the web visit >>>>>>>> https://groups.google.com/d/msgid/prometheus-users/b8f2f195-efc1-4c48-b85b-88a8687964bfn%40googlegroups.com >>>>>>>> <https://groups.google.com/d/msgid/prometheus-users/b8f2f195-efc1-4c48-b85b-88a8687964bfn%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>> . >>>>>>>> >>>>>>> -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. 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