Error -2 connecting to redis-cache:6379. Name does not resolve.

[ipflowss]

Hi there,
I am administering netbox via docker containers. Its been running for a few weeks without me logging into it. And now I see the following error. I restarted all the conatiners and that did not clear the error. What else can I check?

--- snip ---
<class 'redis.exceptions.ConnectionError'>

Error -2 connecting to redis-cache:6379. Name does not resolve.

Python version: 3.9.5
NetBox version: 3.1.8

--- snip ---

--- snip ---
❯ docker ps -a | grep netbox
18c9a16a21c7 netboxcommunity/netbox:v3.1-1.5.1 "/sbin/tini -- /opt/…" 11 days ago Up 38 minutes 0.0.0.0:8000->8080/tcp, :::8000->8080/tcp netbox-docker_netbox_1
2cc58583850c netboxcommunity/netbox:v3.1-1.5.1 "/sbin/tini -- /opt/…" 11 days ago Up 38 minutes netbox-docker_netbox-worker_1
a598831a63fd netboxcommunity/netbox:v3.1-1.5.1 "/sbin/tini -- /opt/…" 11 days ago Up 38 minutes netbox-docker_netbox-housekeeping_1
460d01e3d1f3 postgres:14-alpine "docker-entrypoint.s…" 11 days ago Up 38 minutes 5432/tcp netbox-docker_postgres_1
629d4fc53482 redis:6-alpine "docker-entrypoint.s…" 11 days ago Up 38 minutes 6379/tcp
--- snip ---

Cheers

[candlerb]

Netbox is trying to connect to a hostname "redis-cache" (presumably another container?) and now your system cannot not resolve "redis-cache" to an IP address.

The problem is within your docker / kubernetes / whatever container environment.