# Cannot remove DN node from my cluster

**URL:** <https://forum.scylladb.com/t/cannot-remove-dn-node-from-my-cluster/1342>\
**Category:** ScyllaDB\
**Created:** [February 29, 2024, 7:18am UTC](https://forum.scylladb.com/t/cannot-remove-dn-node-from-my-cluster/1342 "2024-02-29T07:18:55Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@vincent](https://forum.scylladb.com/u/vincent)\
**Post date:** [February 29, 2024, 7:18am UTC](https://forum.scylladb.com/t/cannot-remove-dn-node-from-my-cluster/1342/1 "2024-02-29T07:18:55Z")

</div>

When I use ‘nodetool removenode’ to remove a DN node from my cluster(with 143 nodes and scylla version 5.1.15), I encountered an error and the node failed to be removed finally.  
Here is the error message:

```auto
[HOSTNAME-01 /]# nodetool status | grep DN
DN 10.4.1.82 5.03 TB 256 ? f17b8181-ff05-4499-a6de-5f5225a9f50e DC_rack
[HOSTNAME-01 /]# nodetool removenode f17b8181-ff05-4499-a6de-5f5225a9f50e
nodetool: Scylla API server HTTP POST to URL '/storage_service/remove_node' failed: seastar::rpc::remote_verb_error (node_ops_cmd_check: Node 10.4.1.139 rejected node_ops_cmd=removenode_abort from node=10.4.1.84 with ops_uuid=c51ebd9a-2aaf-4c2e-bfad-c55567e23a39, pending_node_ops={}, the node ops is unknown)

```

I’m curious why does this happen and how can I solve this problem.

---

<div class="post-metadata">

**Author:** ![bo\_li](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.scylladb.com/bo_li/32/438_2.png) [@bo\_li](https://forum.scylladb.com/u/bo_li)\
**Post date:** [February 29, 2024, 7:24am UTC](https://forum.scylladb.com/t/cannot-remove-dn-node-from-my-cluster/1342/2 "2024-02-29T07:24:31Z")

</div>

I see it in the code because the obtained [ops\_uuids](https://github.com/scylladb/scylladb/blob/master/service/storage_service.cc#L3873) is empty, but the command is correct. Is this a bug?  
@Botond_Denes

---

<div class="post-metadata">

**Author:** ![Botond\_Denes](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.scylladb.com/botond_denes/32/163_2.png) [@Botond\_Denes](https://forum.scylladb.com/u/Botond_Denes)\
**Post date:** [February 29, 2024, 7:58am UTC](https://forum.scylladb.com/t/cannot-remove-dn-node-from-my-cluster/1342/3 "2024-02-29T07:58:24Z")

</div>

I don’t know what that means. @Asias_He?

In any case, this may be a bug that was fixed in later releases, 5.1 is not supported anymore.