This project was scheduled for deletion, but failed with the following message: Failed to open TCP connection to <host>:5000 - gitlab

Question

The project has this message:
This project was scheduled for deletion, but failed with the following
message: Failed to open TCP connection to host.ru:5000 (Connection
refused - connect(2) for "host.ru" port 5000)
Can you tell me what this might be related to? Why does gitlab use a different port for deletion ?
(default port is 30443)
How do I delete this message?
A lot of questions, but I really don't understand what this message is. clearly this is an error :)
Gitlab is located in docker.
message
P.S. Now I check whether the port is open.
UP! If you don't need the container register, then disable it. This will solve the problem.

Answer 1

Issue:
gitlab is running in a separate docker container and registry is running in a separate docker container. gitlab container is not able to resolve the dns name for the registry and gives the error
"this project was scheduled for deletion, but failed with the following message: failed to open tcp connection to registry:5000 (getaddrinfo: name or service not known)"
Solution:
docker inspect (registry container name)
E.g. docker inspect registry
get the IP address of the registry container
Login to gitlab container machine :
E.g. docker exec -it gitlab bash
Edit the hosts file
vi /etc/hosts
Add the ip address and dns name mapping for the runner container
in the hostfile
172.xx.x.1 registry
This will resolve this issue.
no restarts required.