Not available: upsfetch: tcp_open failed for 127.0.0.1 port 3551, docker syntax?

[SomePersonSomeWhereInTheWorld]

So I updated the docker-compose.yml file to match our UPSes. I ran:

1. docker build apcupsd-image
   Sending build context to Docker daemon  4.096kB
   Step 1/5 : FROM alpine:3.7
   ---> 6d1ef012b567
   Step 2/5 : RUN apk update && apk add --no-cache bash apcupsd
   ---> Using cache
   ---> ec8abf39fb6d
   Step 3/5 : COPY ./apcupsd.conf /etc/apcupsd/apcupsd.conf
   ---> Using cache
   ---> 1ed02c289b6a
   Step 4/5 : COPY ./entrypoint.sh /usr/local/bin/
   ---> Using cache
   ---> 5b3fd3fff05c
   Step 5/5 : CMD ["/usr/local/bin/entrypoint.sh"]
   ---> Using cache
   ---> bd8efc00f2d2
   Successfully built bd8efc00f2d2

2. # docker run -d bd8efc00f2d2

docker ps --no-trunc
CONTAINER ID                                                       IMAGE          COMMAND                          CREATED              STATUS              PORTS     NAMES
7815b93e0fe6b87305293e13b1882111fddd7bbaa081d237aa1ee183d79085e5   bd8efc00f2d2   "/usr/local/bin/entrypoint.sh"   About a minute ago   Up About a minute             trusting_rosalind

But I only get: "Local Host Not available: upsfetch: tcp_open failed for 127.0.0.1 port 3551"

Any tips to get this working?

[crossan007]

the UPS_TO_MONITOR variable needs to be the same as the service names of the UPS(s) you want to watch.

Docker compose's internal DNS resolver will map those names to IPs; they likely won't be 127.0.0.1

[stephengrenfell]

I have the same error. Using Docker with APCUPSD-CGI

Not available: upsfetch: tcp_open failed for Debian-x79 port 3551

Here's my APCUPSD-CGI code

`version: '3.9' services: apcupsd-cgi: image: bnhf/apcupsd-cgi:latest container_name: apcupsd-cgi dns_search: Workgroup # Set to your LAN's domain name (often local or localdomain), this should help with local DNS resolution of hostnames ports:

• 3552:80 environment:
• UPSHOSTS=${UPSHOSTS} # Ordered list of hostnames or IP addresses of UPS connected computers (space separated, no quotes)
• UPSNAMES=${UPSNAMES} # Matching ordered list of location names to display on status page (space separated, no quotes)
• TZ=${TZ} # Timezone to use for status page -- UTC is the default
• DASHBOARD_PROVISION=${DASHBOARD_PROVISION} # Set to true if you'd like this container to place data files (in advance) for use with the companion Grafana Dashboard volumes:
• /data/apcupsd-cgi:/etc/apcupsd
• /data/telegraf:/etc/telegraf # Only required if you'd like this container to place data files (in advance) for use with the companion Grafana Dashboard
• /data/grafana/provisioning:/etc/grafana/provisioning # Only required if you'd like this container to place data files (in advance) for use with the companion Grafana Dashboard restart: unless-stopped`

Any thoughts how I might solve the problem.