Editing Troubleshooting of docker errors

Troubleshooting of docker errors

== General Troubleshooting Steps of Docker Errors ==

=== Viewing Docker Logs ===
Enter the following command
<pre>
tail /home/dockerd.log
</pre>

Or the see the log of specific container ID
<pre>
docker logs <Container ID>

# OR enter the following command which the log was updated automatically
docker logs -f --details <Container ID>
</pre>

=== Useful Tools ===
* [https://hadolint.github.io/hadolint/ Dockerfile Linter]

== Common Error Solutions ==
=== Error: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?  ===
Error condition: After I inputted the command {{kbd | key = docker ps}}, I met the error message as follows:

<pre>
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? 
</pre>

Solution: 
* On CentOS: {{kbd | key = sudo systemctl start docker}}<ref>[https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-centos-7 How To Install and Use Docker on CentOS 7 | DigitalOcean]</ref>



=== Error response from daemon: dial unix docker.raw.sock: connect: connection refused (on Mac) ===
Error condition: After I inputted the command {{kbd | key = docker ps}}, I met the error message as follows:

<pre>
Error response from daemon: dial unix docker.raw.sock: connect: connection refused
</pre>

Solution: Make sure the docker is running. After docker was lunched, the result of command {{kbd | key = docker ps}} should be:
<pre>
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
</pre>

=== Error response from docker desktop: credential when tried to docker push ===

Solution: Login the account of docker hub

=== Error response from docker desktop: denied: requested access to the resource is denied when tried to docker push ===

Solution: Add tag to the docker image you want to publish<ref>[https://stackoverflow.com/questions/43858398/docker-push-error-denied-requested-access-to-the-resource-is-denied docker push error "denied: requested access to the resource is denied" - Stack Overflow]</ref> 

<pre>
docker tag <IMAGE ID> <ACCOUNT NAME>/<NAME>:<TAG>
</pre>

== References ==
<references />

{{Template:Troubleshooting}}

[[Category: Programming]]
[[Category: Docker]]