Export

First step of the migration is to export resource from a source cluster. This export command provides means of extracting resources from any namespace desired. This is a required step of the process and has to be the first step of the process as input of subsequent commands depends on the output of export.

Example

crane export -n foo -e export --context demo

cat << EOF >> conf.yaml
namespace: foo
export-dir: export
context: demo
EOF

crane export -c conf.yaml

cat << EOF >> conf.yaml
namespace: foo
export-dir: export
context: testing
EOF

crane export -c conf.yaml --context demo

# Note the difference is we are overriding "context" here with flag

All the above command will export contents of foo namespace in to local dir export with the context demo defined in KUBECONFIG.

Note: there are few ways to provide input to a command, precedence of which is input from flags > input from config file > env variables > default values (not all the flags can have corresponding env variable). And this behavior persist across all the commands of crane cli.