# \#nodetool **URL:** https://forum.scylladb.com/tag/nodetool/86.md [Latest](https://forum.scylladb.com/latest.md) · [Categories](https://forum.scylladb.com/categories.md) · [Tags](https://forum.scylladb.com/tags.md) --- ## [In the process of replacing a running ScyllaDB node, when can I decomission the old node?](https://forum.scylladb.com/t/in-the-process-of-replacing-a-running-scylladb-node-when-can-i-decomission-the-old-node/5270)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [February 8, 2026, 5:23am UTC](https://forum.scylladb.com/t/in-the-process-of-replacing-a-running-scylladb-node-when-can-i-decomission-the-old-node/5270 "2026-02-08T05:23:57Z")
--- ## [Stuck topology request after increasing replication factor](https://forum.scylladb.com/t/stuck-topology-request-after-increasing-replication-factor/5202)
**Author:** [@di-hardt](https://forum.scylladb.com/u/di-hardt)\ **Replies:** 2\ **Last updated:** [December 12, 2025, 11:26am UTC](https://forum.scylladb.com/t/stuck-topology-request-after-increasing-replication-factor/5202 "2025-12-12T11:26:53Z")
Installation details #ScyllaDB version: 6.2 #Cluster size: 30 nodes x 1 dc #OS: Ubuntu 24.04 Hey everybody, I encounter some issues with a stuck topology request after increasing the replication factor. The query wh… --- ## [Does disk space free automatically after reducing RF and running repair?](https://forum.scylladb.com/t/does-disk-space-free-automatically-after-reducing-rf-and-running-repair/5170)
**Author:** [@Jobin\_Jose](https://forum.scylladb.com/u/Jobin_Jose)\ **Replies:** 1\ **Last updated:** [November 8, 2025, 6:11am UTC](https://forum.scylladb.com/t/does-disk-space-free-automatically-after-reducing-rf-and-running-repair/5170 "2025-11-08T06:11:53Z")
We reduced RF from 3→2 using ALTER KEYSPACE and ran nodetool repair on all 3 nodes. Will disk space be freed automatically through compaction? --- ## [Adding a node to an existing cluster, node stuck in joining status](https://forum.scylladb.com/t/adding-a-node-to-an-existing-cluster-node-stuck-in-joining-status/5098)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [September 15, 2025, 4:48am UTC](https://forum.scylladb.com/t/adding-a-node-to-an-existing-cluster-node-stuck-in-joining-status/5098 "2025-09-15T04:48:03Z")
--- ## [Dropping a table does not reduce disk usage. Why?](https://forum.scylladb.com/t/dropping-a-table-does-not-reduce-disk-usage-why/5090)
**Author:** [@Anna](https://forum.scylladb.com/u/Anna)\ **Replies:** 1\ **Last updated:** [September 8, 2025, 9:04am UTC](https://forum.scylladb.com/t/dropping-a-table-does-not-reduce-disk-usage-why/5090 "2025-09-08T09:04:37Z")
I’m trying to free up disk space, but when I drop a table, it does not reduce the storage used by ScyllaDB. What’s happening? --- ## [Nodetool refresh claims TOC is empty, but it's not](https://forum.scylladb.com/t/nodetool-refresh-claims-toc-is-empty-but-its-not/4827)
**Author:** [@daprodigy](https://forum.scylladb.com/u/daprodigy)\ **Replies:** 3\ **Last updated:** [August 25, 2025, 5:50am UTC](https://forum.scylladb.com/t/nodetool-refresh-claims-toc-is-empty-but-its-not/4827 "2025-08-25T05:50:35Z")
Installation details #ScyllaDB version: 2024.2.9-0.20250423.9aa1f3a492bc #Cluster size: 1 os (RHEL/CentOS/Ubuntu/AWS AMI): Ubuntu Hello all Trying to load some SSTables using nodetool refresh gibing me the followin… --- ## [Ghost node in none state](https://forum.scylladb.com/t/ghost-node-in-none-state/4875)
**Author:** [@Andrey\_Kojevnikov](https://forum.scylladb.com/u/Andrey_Kojevnikov)\ **Replies:** 1\ **Last updated:** [August 10, 2025, 12:44pm UTC](https://forum.scylladb.com/t/ghost-node-in-none-state/4875 "2025-08-10T12:44:08Z")
Installation details #ScyllaDB version: 6.2 with tablets enabled #Cluster size: 12 x 3dc os (RHEL/CentOS/Ubuntu/AWS AMI): Ubuntu 24.10 Hi. I have a ghost node select \* from system.cluster\_status; peer | dc … --- ## [Issues with repair not functioning properly in ScyllaDB version 5.2.6](https://forum.scylladb.com/t/issues-with-repair-not-functioning-properly-in-scylladb-version-5-2-6/4891)
**Author:** [@kdhyun2](https://forum.scylladb.com/u/kdhyun2)\ **Replies:** 2\ **Last updated:** [June 18, 2025, 7:42am UTC](https://forum.scylladb.com/t/issues-with-repair-not-functioning-properly-in-scylladb-version-5-2-6/4891 "2025-06-18T07:42:56Z")
Installation details #ScyllaDB version: 5.2.6 #Cluster size: 1 DC/ 9 Nodes os (RHEL/CentOS/Ubuntu/AWS AMI):AWS AMI Environment Details Issue: nodetool repair -pr appears to be stuck during system\_traces keyspace re… --- ## [Migrating data from one cluster to another, Scylla Manager, Migrator and nodetool snapshot](https://forum.scylladb.com/t/migrating-data-from-one-cluster-to-another-scylla-manager-migrator-and-nodetool-snapshot/4786)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [April 27, 2025, 4:18am UTC](https://forum.scylladb.com/t/migrating-data-from-one-cluster-to-another-scylla-manager-migrator-and-nodetool-snapshot/4786 "2025-04-27T04:18:47Z")
--- ## [Rebuilt Node Missing from Raft State, Not Starting](https://forum.scylladb.com/t/rebuilt-node-missing-from-raft-state-not-starting/2927)
**Author:** [@GarrettPoore](https://forum.scylladb.com/u/GarrettPoore)\ **Replies:** 9\ **Last updated:** [April 24, 2025, 4:02am UTC](https://forum.scylladb.com/t/rebuilt-node-missing-from-raft-state-not-starting/2927 "2025-04-24T04:02:24Z")
Ok, so it’s been a week, I’m going to give the full timeline of events, in case something that I don’t think is relevant actually is. A node (let’s call it Node A) of our cluster filled disk space 100% (we missed alarm… --- ## [Scylla db boostrap issue](https://forum.scylladb.com/t/scylla-db-boostrap-issue/3188)
**Author:** [@Raphael\_MAZELIER](https://forum.scylladb.com/u/Raphael_MAZELIER)\ **Replies:** 1\ **Last updated:** [April 20, 2025, 9:36am UTC](https://forum.scylladb.com/t/scylla-db-boostrap-issue/3188 "2025-04-20T09:36:01Z")
Installation details #ScyllaDB version: 6.1 #Cluster size: 3 x 2 os (RHEL/CentOS/Ubuntu/AWS AMI): Debian Me again. After finally found a solution to massive insertion (close to the theoritical 10k rps per core) I fo… --- ## [Nodetool clearsnapshot - error](https://forum.scylladb.com/t/nodetool-clearsnapshot-error/4521)
**Author:** [@bryam](https://forum.scylladb.com/u/bryam)\ **Replies:** 1\ **Last updated:** [April 15, 2025, 12:42pm UTC](https://forum.scylladb.com/t/nodetool-clearsnapshot-error/4521 "2025-04-15T12:42:55Z")
Installation details #ScyllaDB version: 6.0.3 #Cluster size: 3 i4g.large #OS: AWS linux 2023 Hi team, got following error in recent versions of scyllaDB, when I execute command “nodetool clearsnapshot” or “nodetool … --- ## [Disk space usage after deleting tables, how can I verify data was actually removed?](https://forum.scylladb.com/t/disk-space-usage-after-deleting-tables-how-can-i-verify-data-was-actually-removed/4599)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [March 12, 2025, 9:16am UTC](https://forum.scylladb.com/t/disk-space-usage-after-deleting-tables-how-can-i-verify-data-was-actually-removed/4599 "2025-03-12T09:16:52Z")
--- ## [Replacing disks in running nodes, cleanup and what is the correct process?](https://forum.scylladb.com/t/replacing-disks-in-running-nodes-cleanup-and-what-is-the-correct-process/4540)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [February 27, 2025, 7:43am UTC](https://forum.scylladb.com/t/replacing-disks-in-running-nodes-cleanup-and-what-is-the-correct-process/4540 "2025-02-27T07:43:24Z")
--- ## [Could sstable dump-data by api](https://forum.scylladb.com/t/could-sstable-dump-data-by-api/4485)
**Author:** [@qiuqiu](https://forum.scylladb.com/u/qiuqiu)\ **Replies:** 1\ **Last updated:** [February 14, 2025, 10:35am UTC](https://forum.scylladb.com/t/could-sstable-dump-data-by-api/4485 "2025-02-14T10:35:28Z")
Is there any api to dump sstable files ? --- ## [Cluster overloaded? Getting error message: reader\_concurrency\_semaphore - (rate limiting dropped 49 similar messages) Semaphore \_read\_concurrency\_sem with 55/100 count and 13255581/147597557 memory resources: timed out, dumping permit diagnostics:](https://forum.scylladb.com/t/cluster-overloaded-getting-error-message-reader-concurrency-semaphore-rate-limiting-dropped-49-similar-messages-semaphore-read-concurrency-sem-with-55-100-count-and-13255581-147597557-memory-resources-timed-out-dumping-permit-diagnostics/4487)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [February 13, 2025, 10:52am UTC](https://forum.scylladb.com/t/cluster-overloaded-getting-error-message-reader-concurrency-semaphore-rate-limiting-dropped-49-similar-messages-semaphore-read-concurrency-sem-with-55-100-count-and-13255581-147597557-memory-resources-timed-out-dumping-permit-diagnostics/4487 "2025-02-13T10:52:23Z")
--- ## [How to create a local snapshot of the data](https://forum.scylladb.com/t/how-to-create-a-local-snapshot-of-the-data/4435)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [February 1, 2025, 5:52pm UTC](https://forum.scylladb.com/t/how-to-create-a-local-snapshot-of-the-data/4435 "2025-02-01T17:52:01Z")
--- ## [Aio-max-nr issue - Could not setup Async I/O: Resource temporarily unavailable](https://forum.scylladb.com/t/aio-max-nr-issue-could-not-setup-async-i-o-resource-temporarily-unavailable/4315)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [December 31, 2024, 6:17am UTC](https://forum.scylladb.com/t/aio-max-nr-issue-could-not-setup-async-i-o-resource-temporarily-unavailable/4315 "2024-12-31T06:17:56Z")
--- ## [Nodes not joining a cluster, incrementally adding nodes to a cluster](https://forum.scylladb.com/t/nodes-not-joining-a-cluster-incrementally-adding-nodes-to-a-cluster/2299)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 1\ **Last updated:** [November 13, 2024, 5:26pm UTC](https://forum.scylladb.com/t/nodes-not-joining-a-cluster-incrementally-adding-nodes-to-a-cluster/2299 "2024-11-13T17:26:33Z")
--- ## [Failed to refill emergency reserve](https://forum.scylladb.com/t/failed-to-refill-emergency-reserve/3058)
**Author:** [@bo\_li](https://forum.scylladb.com/u/bo_li)\ **Replies:** 3\ **Last updated:** [October 28, 2024, 2:36pm UTC](https://forum.scylladb.com/t/failed-to-refill-emergency-reserve/3058 "2024-10-28T14:36:58Z")
When I perform removenode operation on a node with permanent DN, other nodes DN are gone. I see the following abnormal information on the DN node: storage\_proxy - Exception when communicating with 10.6.0.2, to read from… --- ## [ScyllaDB mass insertion advice needed](https://forum.scylladb.com/t/scylladb-mass-insertion-advice-needed/3049)
**Author:** [@Raphael\_MAZELIER](https://forum.scylladb.com/u/Raphael_MAZELIER)\ **Replies:** 1\ **Last updated:** [October 21, 2024, 6:47am UTC](https://forum.scylladb.com/t/scylladb-mass-insertion-advice-needed/3049 "2024-10-21T06:47:48Z")
Hi Scylla Team, So come back after month and my project is up again. TLDR; I wanted to replace my C\* cluster by Scylla (hoping for perf gain and cost reduction). Context: I have 3 clusters (different sizing depending… --- ## [Queries taking longer after migrating to a new cluster, how can I debug and analyze this?](https://forum.scylladb.com/t/queries-taking-longer-after-migrating-to-a-new-cluster-how-can-i-debug-and-analyze-this/2845)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [September 4, 2024, 5:30am UTC](https://forum.scylladb.com/t/queries-taking-longer-after-migrating-to-a-new-cluster-how-can-i-debug-and-analyze-this/2845 "2024-09-04T05:30:55Z")
--- ## [Replacing a dead (DN) node with the same IP, syncing data](https://forum.scylladb.com/t/replacing-a-dead-dn-node-with-the-same-ip-syncing-data/2524)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [August 22, 2024, 8:55am UTC](https://forum.scylladb.com/t/replacing-a-dead-dn-node-with-the-same-ip-syncing-data/2524 "2024-08-22T08:55:40Z")
--- ## [Rebalance the cluster token range](https://forum.scylladb.com/t/rebalance-the-cluster-token-range/2291)
**Author:** [@sdnaffi](https://forum.scylladb.com/u/sdnaffi)\ **Replies:** 1\ **Last updated:** [July 14, 2024, 10:53am UTC](https://forum.scylladb.com/t/rebalance-the-cluster-token-range/2291 "2024-07-14T10:53:44Z")
I’ve a test cluster and it’s load is imbalance. We have keyspace with RF=1. -- Address Load Tokens UN 127.0.0.2 146.7 GB 256 UN 127.0.0.3 2.85 GB 256 UN 127.0.0.1 36.45 MB 256 How can i rebala… --- ## [Facing Issue on nodetool rebuild : keeps getting stuck for a long time](https://forum.scylladb.com/t/facing-issue-on-nodetool-rebuild-keeps-getting-stuck-for-a-long-time/2156)
**Author:** [@Batman](https://forum.scylladb.com/u/Batman)\ **Replies:** 1\ **Last updated:** [July 10, 2024, 8:12pm UTC](https://forum.scylladb.com/t/facing-issue-on-nodetool-rebuild-keeps-getting-stuck-for-a-long-time/2156 "2024-07-10T20:12:42Z")
I am trying to add a new Data Center to an existing 3 node scylla cluster. The older DC and the new DC are at different location (connected via IPsec). I have successfully joined the new DC and is UN. The problem arise… --- ## [Is there anything bad when executes nodetool repair whose host ip doesn't match token range?](https://forum.scylladb.com/t/is-there-anything-bad-when-executes-nodetool-repair-whose-host-ip-doesnt-match-token-range/2019)
**Author:** [@qiuqiu](https://forum.scylladb.com/u/qiuqiu)\ **Replies:** 1\ **Last updated:** [July 9, 2024, 1:09pm UTC](https://forum.scylladb.com/t/is-there-anything-bad-when-executes-nodetool-repair-whose-host-ip-doesnt-match-token-range/2019 "2024-07-09T13:09:16Z")
In order to make it specific enough, here set an example, a cluster with nodes 127.0.0.1, 127.0.0.2, 127.0.0.3 , and consistency level is quorum. Here is the process: firstly, get the token range by executing nodetool d… --- ## [Nodetool Refresh to Migrate Data](https://forum.scylladb.com/t/nodetool-refresh-to-migrate-data/1965)
**Author:** [@GarrettPoore](https://forum.scylladb.com/u/GarrettPoore)\ **Replies:** 3\ **Last updated:** [May 26, 2024, 3:30pm UTC](https://forum.scylladb.com/t/nodetool-refresh-to-migrate-data/1965 "2024-05-26T15:30:16Z")
Hi, I’m looking into options to migrate Scylla data in a few different ways. We have multiple clusters with customer data split across them. We have a few customers that were initially split (for downstream “ease” to set… --- ## [Removing a node from a cluster without replicating the data](https://forum.scylladb.com/t/removing-a-node-from-a-cluster-without-replicating-the-data/1963)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [May 6, 2024, 9:49am UTC](https://forum.scylladb.com/t/removing-a-node-from-a-cluster-without-replicating-the-data/1963 "2024-05-06T09:49:39Z")
--- ## [The tombston\_gc={'mode': 'repair'} option doesn't remove tombstones](https://forum.scylladb.com/t/the-tombston-gc-mode-repair-option-doesnt-remove-tombstones/1471)
**Author:** [@sonny](https://forum.scylladb.com/u/sonny)\ **Replies:** 4\ **Last updated:** [April 22, 2024, 10:37pm UTC](https://forum.scylladb.com/t/the-tombston-gc-mode-repair-option-doesnt-remove-tombstones/1471 "2024-04-22T22:37:02Z")
I’m using ScyllaDB 5.4.x version. I tested the tombstone\_gc={‘mode’: ‘repair’} option and found it doesn’t remove tombstones. I had three ScyllaDB nodes and created keyspace and table like this. CREATE KEYSPACE test W… --- ## [Using nodetool refresh, load and stream to backup and restore an entire cluster](https://forum.scylladb.com/t/using-nodetool-refresh-load-and-stream-to-backup-and-restore-an-entire-cluster/1482)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [April 14, 2024, 4:14am UTC](https://forum.scylladb.com/t/using-nodetool-refresh-load-and-stream-to-backup-and-restore-an-entire-cluster/1482 "2024-04-14T04:14:11Z")
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