Nav-users May 2020

nav-users@lister.sikt.no

5 participants
5 discussions

NAV with Cisco 3850
by Mischa Diehm 15 Sep '23

15 Sep '23

Hi, we have a 3850 Stack with 3x ES-C3850-48T-S and 5x WS-C3850-12X48U. When we try to PortAdmin and edit a Port we get (see also attached Jpg): „IP device found but has no type“ Any ideas? Cheers, Mischa -- Mischa Diehm | Network Team (NINS) UniBasel | IT-Services (ITS) Klingebergstr. 70 | CH-4056 Basel Tel. +41 61 267 1574 | https://its.unibas.ch

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Issues with Nav docker container - logs, graph gaps and high postgres utilization
by Steve Kersley 03 Jun '20

03 Jun '20

Morning, TLDR: Gaps in graphs after Nav container running for a day or two. Nav container doesn't create logfiles. Nav postgres container has lots of postgres processes running, consuming ¾ of host CPU. Is this normal or bug (in container, or with my setup?) So, after killing my old Nav system with a series of conflicting upgrades, I decided to embrace the Docker approach, so that Nav (and other services) would be self-contained and not affected by upgrading components. All was initially well, but I'm starting to run into increasing graph gaps that I've not been able to resolve. If I stop and rebuild all of the containers with docker-compose, all seems well to start with, but after a while (few hours to a day or two) I start to get gaps and then it's downhill from there. The next issue I discovered while looking into the graph gaps is that there are no logs. Docker does mount a volume on /var/log/nav (from the dockerfile) but nothing ever gets created in it, meaning it's hard to look for warnings or errors. Is that expected behaviour, or is it something I got wrong when adapting the docker-compose file? The only logs I get from 'docker logs' show smsd being spawned and exiting every second: 2020-05-28 07:29:19,089 INFO spawned: 'smsd' with pid 28112 2020-05-28 07:29:20,092 INFO success: smsd entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 2020-05-28 07:29:20,560 INFO exited: smsd (exit status 1; not expected) 2020-05-28 07:29:21,563 INFO spawned: 'smsd' with pid 28116 2020-05-28 07:29:22,565 INFO success: smsd entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 2020-05-28 07:29:22,971 INFO exited: smsd (exit status 1; not expected) 2020-05-28 07:29:23,975 INFO spawned: 'smsd' with pid 28118 2020-05-28 07:29:24,977 INFO success: smsd entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 2020-05-28 07:29:25,355 INFO exited: smsd (exit status 1; not expected) (looking into this, appears to be exiting because python-gammu is not configured in the container, but is unlikely to be connected to the issue) I did increase UDP receive buffers on the host, which I first thought had solved the issue, but the improvement was a side effect of restarting all of the containers and reverted to gaps later. Nav's seeddb has 65 devices. Almost all just switches, with a handful of vmware hosts. The job durations are peculiar too - the 1minstats job for instance, on some switches takes a couple of seconds to run. On others, nearly a minute (or often several minutes on one in particular), but whether that's the cause or a symptom I don't know. It looks as though the postgres database used by Nav is what's eating resources and presumably causing the graph gaps. The docker host typically has a load average of 9-12. Looking at the processes, there are typically at least 10 postgres processes running in the NavDB container, continually using 20-30% of CPU for each process. This does not seem normal to me? I also gave that container more shared memory, as it was logging occasional errors about not being able to allocate enough. Again no change - worse if anything. The docker host is running as a VM as an in-production 'test' - in the fullness of time (when I'm not remote working), I'll likely move the containers onto a bare metal host. Docker host has 4 cores and 8Gb allocated, and is not hitting swap, but I can increase both. The vmware host it runs on has plenty of CPU and RAM with not a massive amount running on it, and the docker host is running from an array of SSDs. Besides Nav and NavDB containers, it's running containers for Icinga, and the Icinga backend mysql database; a dedicated shared graphite container accessed by both Icinga and Nav; Grafana as a dashboard for both; and nginx as a web proxy for all services. (Previously these services were all running fine alongside each other on a physical host of similar specification, until conflicting dependencies broke things). Does anyone have any thoughts? Entries from my docker-compose.yml: nav: container_name: nav build: context: /docker/build/nav args: NAV_VERSION: 5.0.5 ports: - "8002:80" - "162:162/udp" volumes: - /docker/nav/storage/roomimages:/var/lib/nav/uploads/images/rooms depends_on: - navdb environment: - PGHOST=navdb - PGDATABASE=nav - PGUSER=nav - PGPASSWORD=Password - PGPORT=5432 - CARBONHOST=graphite - CARBONPORT=2003 - GRAPHITEWEB=http://graphite/ - NOINITDB=0 env_file: - /docker/build/nav/nav-variables.env restart: always navdb: image: "postgres:12" container_name: navdb volumes: - /docker/navdb/storage/postgresql:/var/lib/postgresql/data environment: - POSTGRES_PASSWORD=Password - POSTGRES_USER=nav - POSTGRES_DB=nav restart: always shm_size: '256mb' Steve.

2 3

Monitor Paloalto equipment
by Edgar Matias 03 Jun '20

03 Jun '20

Hello NAV community, I recently added a Paloalto firewall to the NAV to be monitored. This is the gateway for some vlan. NAV lists all interfaces, but does not classify them as routing or switching ports. There are other things that are not recognized as power supply sensors, for example. I believe this is because the NAV does not have specific MIBs configured. Is there a way to import MIBs to this specific device, or a workaround ? Thanks in advance. Great tool ;) -- Edgar Matias Application Infrastructures Area Fundação para a Ciência e a Tecnologia Unidade FCCN – Computação Científica Nacional Av. do Brasil, 101, 1700-066 Lisboa, Portugal T: [+351] 218 440 100 | [+351] 900 000 000 www.fccn.pt

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Syslog alert by mail
by Biselx Nicolas 13 May '20

13 May '20

Hi, I want to use the Syslog Analyzer, so far no problem the messages arrive in the database. Is it possible to send alerts according to the priority level by email? Regards Biselx Nicolas

2 1

Upgrade to NAV 5, navsyncdb barfs
by Ingeborg Hellemo 11 May '20

11 May '20

I'm in the middle of upgrading NAV from 4.8 to 5.0.5 and running 'navsyncdb' to alter the database schemas. (The database is named nynav because this is a test upgrade) /#navsyncdb Existing namespaces in nynav search path: "$user", public. Adding manage, profiles, logger, arnold, radius. Applying outstanding schema changes sql/changes/sc.04.09.0001.sql: OK sql/changes/sc.04.09.0050.sql: OK sql/changes/sc.04.09.0100.sql: OK sql/changes/sc.04.09.0110.sql: OK sql/changes/sc.04.09.0200.sql: OK sql/changes/sc.05.00.0001.sql: OK sql/changes/sc.05.00.0010.sql: operator is not unique: unknown || integer LINE 29: 'SNMP v' || snmp_version || ' read profile #' || row AS na... ^ HINT: Could not choose a best candidate operator. You might need to add explicit type casts. Server version Postgresql 9.6.17 Since this is a newly created database with imported data it might be missing some environment variables or something. --Ingeborg -- Ingeborg Østrem Hellemo -- ingeborg.hellemo(a)uit.no Dep. of Information Technology --- Univ. of Tromsø

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Nav-users May 2020