Working with multiple namespaces
Like Kubernetes, Epinio has an idea of namespaces, and the means of working with them. Working with many namespaces is a little different in Epinio than with Kubernetes.
In Kubernetes the kubectl client accepts an option --namespace for all its commands, and is the name of the namespace to work with.
Epinio maintains a current namespace in its local state, often also called the targeted namespace.
To work with the applications, configurations, etc. in an existing namespace foo
invoke:
epinio target foo
This sets foo as the current namespace.
All other commands of epinio operating on a namespace now use foo.
To start working with a different existing namespace bar simply invoke
epinio target again, that is, run:
epinio target bar
To see the name of the current namespace invoke the command without a namespace argument, i.e.:
epinio target
There are a few points to note:
The current namespace is local state, specific to the user invoking the Epinio client. The state information isn't shared between users.
Creating a new namespace doesn't make it the current namespace.
Deleting the current namespace doesn't undo the targeting. The removed namespace stays targeted and so the next commands fail.
While installation of Epinio creates the pre-defined namespace
workspace, the Helm chart is not able to automatically target this namespace. The user must do this. This, and the previous point means that whatever namespace was the last target in a preceding installation of Epinio continues to be the target in a new installation.