[feature request]Add commands so that single node could convert to a standard Kubernetes node or an OpenYurt edgenode

[Peeknut]

What would you like to be added:
Add commands, such as yurtctl convert edgenode and yurtctl revert edgenode , so that single node could use these commands to convert a standard Kubernetes node to an OpenYurt edgenode or revert an OpenYurt edgenode.

Why is this needed:
The commands yurtctl convert、yurtctl revert will convert all edge nodes to OpenYurt cluster or Kubernetes cluster. If a new edge node is added after conversion, there are no corresponding commands to convert it to an OpenYurt edgenode or a Kubernetes node. We can only use commands yurtctl convert、yurtctl revert again to convert all edge nodes, which may cause errors and be low efficiency. So commands are needed to allow a single node to convert and revert.

[Peeknut]

@rambohe-ch @GsssC

[huangyuqi]

@Peeknut
Actually, if the node joins the cluster as before, it will still be a stand node ,not a yurt node; Base on the pattern of node joining. We can bring out a command as 'yurtctl convert node xxx' or 'yurtctl revert node xxx' .
BTW, The ability of joining node with yurt type will opensource soon ;

[GsssC]

Then we can remove the servant bash script instead of using yurtctl convert edgenode.

[huangyuqi]

@zyjhtangtang Would you mind bringing a proposal about joining a node in 'yurt' way?

[rambohe-ch]

@Peeknut
Actually, if the node joins the cluster as before, it will still be a stand node ,not a yurt node; Base on the pattern of node joining. We can bring out a command as 'yurtctl convert node xxx' or 'yurtctl revert node xxx' .
BTW, The ability of joining node with yurt type will opensource soon ;

@huangyuqi i think that node join feature and one node convert feature are different. because when user wants to use a customized tool to join node, node convert feature maybe needed.
so i think node convert feature is welcome. @Peeknut

[rambohe-ch]

Then we can remove the servant bash script instead of using yurtctl convert edgenode.

@GsssC yeah, robustness of servant bash script is not so good, it is a good idea to use golang command to refactor it.
@Peeknut would you refactor the node convert/revert feature by golang?

[Peeknut]

Then we can remove the servant bash script instead of using yurtctl convert edgenode.

@GsssC yeah, robustness of servant bash script is not so good, it is a good idea to use golang command to refactor it.
@Peeknut would you refactor the node convert/revert feature by golang?

ok

[Walnux]

I think this request is reasonable. And we do need a standard way (or feature) for the user to "join the node into the clusters". 👍