Troubleshooting Kubernetes - failed to pull an image from a private registry

I was struggled to pull a docker image from a private registry in Kubernetes environment. But everything seems okay. I added a secret to Kubernetes and then the secret information works well in my local. But when I tried to deploy a pod using an image ** no basic auth credentials ** error happened.

Then I finally fixed it. I didn’t create the credentials(secret) with a same namespace in Kubernetes environment. If you use a namespace for your k8s deployment you must know that all the objects related to the deployment should use the same namespace.

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Why did Google announce Flutter?

Kotlin itself is largely dependent on Java. So Google needs a completely different alternative which helps them get rid of it entirely (That’s one of the reasons for the existence of Fuchsia). The Dart programming language used in the Flutter framework is one of the first steps taken by Google to do the same.

I am still thinking between Reative Native and Flutter. Actually I prefer developing an app using a native code. So recently I looked through Kotlin and Android native platform. By the way it seems that Google might give up Kotlin in the future in according to this article.

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Docker connection is refused in Jenkins

The issue was from Docker configuration. In Ubuntu 18.04 Docker configuration is located in /lib/systemd/system/docker.service Then I need to update to enable Docker daemon connection from Jenkins.

ExecStart=/usr/bin/docker daemon -H fd://

I updated the configuration above to a new configuration below. ExecStart=/usr/bin/docker daemon -H fd:// -D -H tcp://0.0.0.0:2375 The I restarted Docker daemon. sudo systemctl daemon-reload sudo systemctl restart docker

Now it worked. Jenkins can connect the Docker daemon now.

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