Remove --namespace flag from Podman root

Signed-off-by: Matt Heon <mheon@redhat.com>

cmd/podman/root.go

@@ -457,6 +457,7 @@ func rootFlags(cmd *cobra.Command, podmanConfig *entities.PodmanConfig) {
 		namespaceFlagName := "namespace"
 		pFlags.StringVar(&podmanConfig.ContainersConf.Engine.Namespace, namespaceFlagName, podmanConfig.ContainersConfDefaultsRO.Engine.Namespace, "Set the libpod namespace, used to create separate views of the containers and pods on the system")
 		_ = cmd.RegisterFlagCompletionFunc(namespaceFlagName, completion.AutocompleteNone)
+		_ = pFlags.MarkHidden(namespaceFlagName)
 
 		networkBackendFlagName := "network-backend"
 		pFlags.StringVar(&podmanConfig.ContainersConf.Network.NetworkBackend, networkBackendFlagName, podmanConfig.ContainersConfDefaultsRO.Network.NetworkBackend, `Network backend to use ("cni"|"netavark")`)

docs/source/markdown/podman.1.md

@@ -82,11 +82,6 @@ Remote connections use local containers.conf for default.
 
 Log messages at and above specified level: debug, info, warn, error, fatal or panic (default: "warn")
 
-#### **--namespace**=*namespace*
-
-Set libpod namespace. Namespaces are used to separate groups of containers and pods in libpod's state.
-When namespace is set, created containers and pods will join the given namespace, and only containers and pods in the given namespace will be visible to Podman.
-
 #### **--network-cmd-path**=*path*
 Path to the command binary to use for setting up a network.  It is currently only used for setting up a slirp4netns(1) or pasta(1) network.  If "" is used then the binary is looked up using the $PATH environment variable.
 

libpod/boltdb_state.go

@@ -541,7 +541,7 @@ func (s *BoltState) GetContainerName(id string) (string, error) {
 }
 
 // GetPodName returns the name associated with a given ID.
-// Returns ErrNoSuchPor if the ID does not exist.
+// Returns ErrNoSuchPod if the ID does not exist.
 func (s *BoltState) GetPodName(id string) (string, error) {
 	if id == "" {
 		return "", define.ErrEmptyID

libpod/runtime.go

@@ -428,7 +428,7 @@ func makeRuntime(runtime *Runtime) (retErr error) {
 	}
 
 	if runtime.config.Engine.Namespace != "" {
-		return fmt.Errorf("namespaces are not supported by this version of Libpod: %w", define.ErrNotImplemented)
+		return fmt.Errorf("namespaces are not supported by this version of Libpod, please unset the `namespace` field in containers.conf: %w", define.ErrNotImplemented)
 	}
 
 	needsUserns := os.Geteuid() != 0