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Configuring /etc/hosts/in Kubernetes Depolyment/Pod

· One min read

Example of Pod:

apiVersion: v1
kind: Pod
metadata:
  name: hostaliases-pod
spec:
  restartPolicy: Never
  hostAliases:
  - ip: "127.0.0.1"
    hostnames:
    - "foo.local"
    - "bar.local"
  - ip: "10.1.2.3"
    hostnames:
    - "foo.remote"
    - "bar.remote"
  containers:
  - name: cat-hosts
    image: busybox
    command:
    - cat
    args:
    - "/etc/hosts"

Example of Deployment

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: hostaliases-deployment
spec:
  template:
    spec:
      hostAliases:
      - ip: "127.0.0.1"
        hostnames:
        - "foo.local"
        - "bar.local"
      - ip: "10.1.2.3"
        hostnames:
        - "foo.remote"
        - "bar.remote"
      containers:
      - name: a-aspnetcore-app
        image: aspnetcore-app:v1.0.0
        env:
        - name: ASPNETCORE_ENVIRONMENT
          value: Development
        ports:
        - containerPort: 80
      imagePullSecrets:
      - name: docker-secret

See the result in Kubernetes container

# cat /etc/hosts
# Kubernetes-managed hosts file.
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
fe00::0 ip6-mcastprefix
fe00::1 ip6-allnodes
fe00::2 ip6-allrouters
192.168.240.234 hostaliases-deployment-65d5c48f7c-pqqvn

# Entries added by HostAliases.
127.0.0.1       foo.local bar.local
10.1.2.3        foo.remote bar.remote

reference: add-entries-to-pod-etc-hosts-with-host-aliases

Configuring GitLab external URL

· One min read

Configuring the external URL for GitLab In order for GitLab to display correct repository clone links to your users it needs to know the URL under which it is reached by your users, e.g. http://gitlab.example.com. Add or edit the following line in /etc/gitlab/gitlab.rb:

external_url "http://gitlab.example.com"

Run sudo gitlab-ctl reconfigure for the change to take effect.

then restart GitLab: sudo gitlab-ctl restart

Refers:

https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/configuration.md#configuring-the-external-url-for-gitlab

https://forum.gitlab.com/t/change-domain-name/1174/2

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