Remove - Reinstall a node in the cluster.
msalem
87 Posts
October 9, 2018, 10:52 amQuote from msalem on October 9, 2018, 10:52 amHello Admin,
Can you please put a detailed steps on how to remove a node from a cluster. --
I know it needs to be shutdown. But I need the rest of the steps in details please.
Thanks
Hello Admin,
Can you please put a detailed steps on how to remove a node from a cluster. --
I know it needs to be shutdown. But I need the rest of the steps in details please.
Thanks
admin
2,930 Posts
October 9, 2018, 11:50 amQuote from admin on October 9, 2018, 11:50 amYou cannot remove a management node (node 1-3), you can only replace them.
To remove a storage node ( node > 3 ), shut it down, then go in the web ui and delete it, this will remove the node from cluster and remove all its OSDs. If you wanted use the OSDs on some other nodes, then before deletion, place the OSDs on other nodes, the system will detected the OSDs are now under other nodes, so when you delete the original node it will not delete the OSDs. If you want you can also add a new node (technically the system does not treat it as a replacement) and optionally put the old OSDs in it.
To replace a management node ( node 1-3), take the node down (if not already) and optionally remove its OSDs and place it in new replacement machine. Install the new machine, you have to give it:
- Same hostname
- Same Management ip/interface
Then in the deployment wizard first step select "Replace Management Node"
If the original node did have OSDs and you chose not to re-use them in new node they will show up as down in the ui and you can delete them.
You cannot remove a management node (node 1-3), you can only replace them.
To remove a storage node ( node > 3 ), shut it down, then go in the web ui and delete it, this will remove the node from cluster and remove all its OSDs. If you wanted use the OSDs on some other nodes, then before deletion, place the OSDs on other nodes, the system will detected the OSDs are now under other nodes, so when you delete the original node it will not delete the OSDs. If you want you can also add a new node (technically the system does not treat it as a replacement) and optionally put the old OSDs in it.
To replace a management node ( node 1-3), take the node down (if not already) and optionally remove its OSDs and place it in new replacement machine. Install the new machine, you have to give it:
- Same hostname
- Same Management ip/interface
Then in the deployment wizard first step select "Replace Management Node"
If the original node did have OSDs and you chose not to re-use them in new node they will show up as down in the ui and you can delete them.
Last edited on October 9, 2018, 12:01 pm by admin · #2
Remove - Reinstall a node in the cluster.
msalem
87 Posts
Quote from msalem on October 9, 2018, 10:52 amHello Admin,
Can you please put a detailed steps on how to remove a node from a cluster. --
I know it needs to be shutdown. But I need the rest of the steps in details please.
Thanks
Hello Admin,
Can you please put a detailed steps on how to remove a node from a cluster. --
I know it needs to be shutdown. But I need the rest of the steps in details please.
Thanks
admin
2,930 Posts
Quote from admin on October 9, 2018, 11:50 amYou cannot remove a management node (node 1-3), you can only replace them.
To remove a storage node ( node > 3 ), shut it down, then go in the web ui and delete it, this will remove the node from cluster and remove all its OSDs. If you wanted use the OSDs on some other nodes, then before deletion, place the OSDs on other nodes, the system will detected the OSDs are now under other nodes, so when you delete the original node it will not delete the OSDs. If you want you can also add a new node (technically the system does not treat it as a replacement) and optionally put the old OSDs in it.
To replace a management node ( node 1-3), take the node down (if not already) and optionally remove its OSDs and place it in new replacement machine. Install the new machine, you have to give it:
- Same hostname
- Same Management ip/interface
Then in the deployment wizard first step select "Replace Management Node"
If the original node did have OSDs and you chose not to re-use them in new node they will show up as down in the ui and you can delete them.
You cannot remove a management node (node 1-3), you can only replace them.
To remove a storage node ( node > 3 ), shut it down, then go in the web ui and delete it, this will remove the node from cluster and remove all its OSDs. If you wanted use the OSDs on some other nodes, then before deletion, place the OSDs on other nodes, the system will detected the OSDs are now under other nodes, so when you delete the original node it will not delete the OSDs. If you want you can also add a new node (technically the system does not treat it as a replacement) and optionally put the old OSDs in it.
To replace a management node ( node 1-3), take the node down (if not already) and optionally remove its OSDs and place it in new replacement machine. Install the new machine, you have to give it:
- Same hostname
- Same Management ip/interface
Then in the deployment wizard first step select "Replace Management Node"
If the original node did have OSDs and you chose not to re-use them in new node they will show up as down in the ui and you can delete them.