# \#multi-dc **URL:** https://forum.scylladb.com/tag/multi-dc/101.md [Latest](https://forum.scylladb.com/latest.md) · [Categories](https://forum.scylladb.com/categories.md) · [Tags](https://forum.scylladb.com/tags.md) --- ## [Multi Data Centers Cluster on K8s + IPVS Loadbalancer environment](https://forum.scylladb.com/t/multi-data-centers-cluster-on-k8s-ipvs-loadbalancer-environment/5060)
**Author:** [@Cheol\_Lee](https://forum.scylladb.com/u/Cheol_Lee)\ **Replies:** 1\ **Last updated:** [August 28, 2025, 5:04am UTC](https://forum.scylladb.com/t/multi-data-centers-cluster-on-k8s-ipvs-loadbalancer-environment/5060 "2025-08-28T05:04:26Z")
Installation details #ScyllaDB version: 2025.2 #Cluster size: 2 k8s cluster with 5 nodes per each os (RHEL/CentOS/Ubuntu/AWS AMI): I want to configure SycllaDB multi-data center clustering between two k8s clusters. O… --- ## [Multi DC clusters. version compatibility and upgrading](https://forum.scylladb.com/t/multi-dc-clusters-version-compatibility-and-upgrading/5073)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [August 20, 2025, 10:46am UTC](https://forum.scylladb.com/t/multi-dc-clusters-version-compatibility-and-upgrading/5073 "2025-08-20T10:46:18Z")
--- ## [Inter DC Replication Latency with strong consistency](https://forum.scylladb.com/t/inter-dc-replication-latency-with-strong-consistency/5036)
**Author:** [@Adi](https://forum.scylladb.com/u/Adi)\ **Replies:** 6\ **Last updated:** [August 11, 2025, 4:09pm UTC](https://forum.scylladb.com/t/inter-dc-replication-latency-with-strong-consistency/5036 "2025-08-11T16:09:53Z")
Installation details Small cluster, 2 DCs , 3 Nodes in each DC, RF 2 #ScyllaDB version: 2025.2 #Cluster size: 2 x 3 os (RHEL/CentOS/Ubuntu/AWS AMI): Ubuntu 22.04 LTS Hi, assuming there are 2 DCs with 100ms latency … --- ## [How to run nodetool repair, all nodes or only one datacenter?](https://forum.scylladb.com/t/how-to-run-nodetool-repair-all-nodes-or-only-one-datacenter/4978)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [July 13, 2025, 4:36am UTC](https://forum.scylladb.com/t/how-to-run-nodetool-repair-all-nodes-or-only-one-datacenter/4978 "2025-07-13T04:36:05Z")
--- ## [Could scylla identify AZ-level failures](https://forum.scylladb.com/t/could-scylla-identify-az-level-failures/4754)
**Author:** [@qiuqiu](https://forum.scylladb.com/u/qiuqiu)\ **Replies:** 7\ **Last updated:** [May 28, 2025, 10:15am UTC](https://forum.scylladb.com/t/could-scylla-identify-az-level-failures/4754 "2025-05-28T10:15:56Z")
Installation details #ScyllaDB version: #Cluster size: os (RHEL/CentOS/Ubuntu/AWS AMI): If there is failure in a datacenter, for example, a cluster with 6 replicas, which means every datacenter owns 2 replicas, when… --- ## [Adding a node in another data center with a different port, runtime error message](https://forum.scylladb.com/t/adding-a-node-in-another-data-center-with-a-different-port-runtime-error-message/4855)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [May 26, 2025, 4:05am UTC](https://forum.scylladb.com/t/adding-a-node-in-another-data-center-with-a-different-port-runtime-error-message/4855 "2025-05-26T04:05:04Z")
--- ## [What's the best way to split a cluster that's on two data centers into two clusters?](https://forum.scylladb.com/t/whats-the-best-way-to-split-a-cluster-thats-on-two-data-centers-into-two-clusters/4570)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [March 5, 2025, 4:51am UTC](https://forum.scylladb.com/t/whats-the-best-way-to-split-a-cluster-thats-on-two-data-centers-into-two-clusters/4570 "2025-03-05T04:51:04Z")
--- ## [Multi data-center cluster setup, latencies and data replication](https://forum.scylladb.com/t/multi-data-center-cluster-setup-latencies-and-data-replication/4415)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [January 26, 2025, 4:57am UTC](https://forum.scylladb.com/t/multi-data-center-cluster-setup-latencies-and-data-replication/4415 "2025-01-26T04:57:55Z")
--- ## [Drivers and consistency with multiple datacenters and local quorum](https://forum.scylladb.com/t/drivers-and-consistency-with-multiple-datacenters-and-local-quorum/4305)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [December 30, 2024, 4:36am UTC](https://forum.scylladb.com/t/drivers-and-consistency-with-multiple-datacenters-and-local-quorum/4305 "2024-12-30T04:36:18Z")
--- ## [Raft majority loss issue - no raft quorum after node failure](https://forum.scylladb.com/t/raft-majority-loss-issue-no-raft-quorum-after-node-failure/2911)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [September 18, 2024, 4:28am UTC](https://forum.scylladb.com/t/raft-majority-loss-issue-no-raft-quorum-after-node-failure/2911 "2024-09-18T04:28:37Z")
--- ## [Different running compactions between multi dc](https://forum.scylladb.com/t/different-running-compactions-between-multi-dc/2282)
**Author:** [@tg.um](https://forum.scylladb.com/u/tg.um)\ **Replies:** 1\ **Last updated:** [July 12, 2024, 3:32pm UTC](https://forum.scylladb.com/t/different-running-compactions-between-multi-dc/2282 "2024-07-12T15:32:06Z")
Hi, we’re running two clusters scyllaDB with 3 nodes. DC1 (3 nodes) DC2 (3 nodes) CREATE KEYSPACE test\_keyspace WITH replication = {‘class’: ‘NetworkTopologyStrategy’, ‘dc1’: ‘3’, ‘dc2’: ‘3’}; Table is using STCS As… --- ## [Can we expand multiple nodes in multi-DC cluster?](https://forum.scylladb.com/t/can-we-expand-multiple-nodes-in-multi-dc-cluster/2125)
**Author:** [@vincent](https://forum.scylladb.com/u/vincent)\ **Replies:** 1\ **Last updated:** [July 9, 2024, 1:10pm UTC](https://forum.scylladb.com/t/can-we-expand-multiple-nodes-in-multi-dc-cluster/2125 "2024-07-09T13:10:08Z")
Now I have a cluster with three Data Centers and I need to expand this cluster. Can I expand one node in each Data Center at the same time? Additionally, I should set the parameter ‘consistent\_rangemovement’ to ‘false’ t… --- ## [Scylla cluster membership issue after failed change](https://forum.scylladb.com/t/scylla-cluster-membership-issue-after-failed-change/1421)
**Author:** [@devblueray](https://forum.scylladb.com/u/devblueray)\ **Replies:** 18\ **Last updated:** [March 29, 2024, 5:40pm UTC](https://forum.scylladb.com/t/scylla-cluster-membership-issue-after-failed-change/1421 "2024-03-29T17:40:38Z")
Have a little problem. Trying to learn how to deal with and fix clustering issues in scylla. (currently 5.2.2) I created a cluster and then I added 2 nodes from a different datacenter into it (so currently datacenter1 = … --- ## [UnavailableException: Not enough replicas available for query](https://forum.scylladb.com/t/unavailableexception-not-enough-replicas-available-for-query/1427)
**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\ **Replies:** 0\ **Last updated:** [March 27, 2024, 5:01am UTC](https://forum.scylladb.com/t/unavailableexception-not-enough-replicas-available-for-query/1427 "2024-03-27T05:01:24Z")
--- ## [Bootstrap repair of us-west nodes takes time in multi-dc cluster](https://forum.scylladb.com/t/bootstrap-repair-of-us-west-nodes-takes-time-in-multi-dc-cluster/1291)
**Author:** [@swarooppatra](https://forum.scylladb.com/u/swarooppatra)\ **Replies:** 13\ **Last updated:** [March 5, 2024, 11:56am UTC](https://forum.scylladb.com/t/bootstrap-repair-of-us-west-nodes-takes-time-in-multi-dc-cluster/1291 "2024-03-05T11:56:47Z")
Hi, We have a Multi-DC ScyllaDB cluster. With 10 nodes in AWS us-east-1 and 10 nodes in us-west-2. We use scylla-ansible-role to bring up new clusters. We have observed that bootstrap of nodes in usw2 takes lot of time … --- ## [Trying to setup a 2 node multi dc cluster for the first time... Seed node comes online fine, second node gets stuck repairing tables and constantly in a state of UJ](https://forum.scylladb.com/t/trying-to-setup-a-2-node-multi-dc-cluster-for-the-first-time-seed-node-comes-online-fine-second-node-gets-stuck-repairing-tables-and-constantly-in-a-state-of-uj/1352)
**Author:** [@JesseDziedzic](https://forum.scylladb.com/u/JesseDziedzic)\ **Replies:** 1\ **Last updated:** [March 4, 2024, 2:10pm UTC](https://forum.scylladb.com/t/trying-to-setup-a-2-node-multi-dc-cluster-for-the-first-time-seed-node-comes-online-fine-second-node-gets-stuck-repairing-tables-and-constantly-in-a-state-of-uj/1352 "2024-03-04T14:10:36Z")
Here are the relevant logs: Mar 03 20:35:18 node02 scylla\[6377\]: \[shard 0:stre\] repair - repair\[21a0a883-863f-4a32-8a3f-ddd8452c3758\]: sync data for keyspace=system\_traces, status=started Mar 03 20:35:18 node02 scylla… --- ## [MultiDC cluster ,Observing 100% cpu when connecting scylla with kafka source connector to read cdc logs](https://forum.scylladb.com/t/multidc-cluster-observing-100-cpu-when-connecting-scylla-with-kafka-source-connector-to-read-cdc-logs/1276)
**Author:** [@amitesh88](https://forum.scylladb.com/u/amitesh88)\ **Replies:** 3\ **Last updated:** [February 12, 2024, 6:50pm UTC](https://forum.scylladb.com/t/multidc-cluster-observing-100-cpu-when-connecting-scylla-with-kafka-source-connector-to-read-cdc-logs/1276 "2024-02-12T18:50:33Z")
We have our multi dc setup with 3 node in dc1 and 3 in dc2 . Although both the DCs are in the same region n same subnet, This is done as we require separate clusters for reading n writing data. Our setup creates a new t…