# \#cluster **URL:** https://community.neo4j.com/tag/cluster/294.md [Latest](https://community.neo4j.com/latest.md) · [Categories](https://community.neo4j.com/categories.md) · [Tags](https://community.neo4j.com/tags.md) --- ## [CDC changes and reads from a cluster](https://community.neo4j.com/t/cdc-changes-and-reads-from-a-cluster/79708)
**Author:** [@daniel.portier](https://community.neo4j.com/u/daniel.portier)\ **Replies:** 3\ **Last updated:** [July 3, 2026, 7:48am UTC](https://community.neo4j.com/t/cdc-changes-and-reads-from-a-cluster/79708 "2026-07-03T07:48:08Z")
Hi All, We run a db-database on a three node cluster (self-managed). We've enabled CDC. We read the transactionlog via the cypher methods: db.cdc.query() from which we retrieve relevant changes for downstream processing… --- ## [Aura Query details for Monitor if a follower, read-replica or secondary is in sync with Leader / Primary](https://community.neo4j.com/t/aura-query-details-for-monitor-if-a-follower-read-replica-or-secondary-is-in-sync-with-leader-primary/74288)
**Author:** [@Amit\_Yadav](https://community.neo4j.com/u/Amit_Yadav)\ **Replies:** 0\ **Last updated:** [June 23, 2025, 9:31am UTC](https://community.neo4j.com/t/aura-query-details-for-monitor-if-a-follower-read-replica-or-secondary-is-in-sync-with-leader-primary/74288 "2025-06-23T09:31:36Z")
Hi, I went through this link Cluster-Sync-Monitoring and want to get the details of all the replica with the last transaction id and the leader transaction id, is there any way we can get in aura DB --- ## [About clustered neo4j setup in community edition - is it possible?](https://community.neo4j.com/t/about-clustered-neo4j-setup-in-community-edition-is-it-possible/74229)
**Author:** [@sarigak48](https://community.neo4j.com/u/sarigak48)\ **Replies:** 1\ **Last updated:** [June 19, 2025, 3:37am UTC](https://community.neo4j.com/t/about-clustered-neo4j-setup-in-community-edition-is-it-possible/74229 "2025-06-19T03:37:03Z")
Hi there! I’m exploring Neo4j for a project and am particularly interested in setting up a clustered environment to ensure high availability. From what I understand, clustering and causal clustering features are only a… --- ## [Parameters considered for Clustering](https://community.neo4j.com/t/parameters-considered-for-clustering/72115)
**Author:** [@noothanchnr](https://community.neo4j.com/u/noothanchnr)\ **Replies:** 2\ **Last updated:** [January 9, 2025, 10:06am UTC](https://community.neo4j.com/t/parameters-considered-for-clustering/72115 "2025-01-09T10:06:45Z")
What are the parameters to be considered to have a cluster deployment for neo4j ? How much will be the data size, RAM, or request ? Are there any specific metrics ? And based on what conditions clustering to be considere… --- ## [Routing table only showing primary node and no secondaries](https://community.neo4j.com/t/routing-table-only-showing-primary-node-and-no-secondaries/68717)
**Author:** [@codrin.stefan](https://community.neo4j.com/u/codrin.stefan)\ **Replies:** 0\ **Last updated:** [July 6, 2024, 3:44pm UTC](https://community.neo4j.com/t/routing-table-only-showing-primary-node-and-no-secondaries/68717 "2024-07-06T15:44:37Z")
Hello, I have a Neo4J Cluster setup as an analytics cluster with 1 primary node and 8 secondaries. I have added a database with 1 primary and 2 secondaries topology and it synced fine, however, the routing table only d… --- ## [In neo4j 5.19 3 node cluster ( core ) port 7687 and 7474 are not listening](https://community.neo4j.com/t/in-neo4j-5-19-3-node-cluster-core-port-7687-and-7474-are-not-listening/68176)
**Author:** [@nikhilpawaskarlinux](https://community.neo4j.com/u/nikhilpawaskarlinux)\ **Replies:** 0\ **Last updated:** [May 30, 2024, 3:06pm UTC](https://community.neo4j.com/t/in-neo4j-5-19-3-node-cluster-core-port-7687-and-7474-are-not-listening/68176 "2024-05-30T15:06:23Z")
I am having neo4j 5.19 enterprise edition installed on 3 servers and I am trying to create cluster but when I am using the parameter below the port 7687 and 7474 are not listening dbms.cluster.discovery.endpoints=10.25… --- ## [Neo4j Causal Cluster fails to form despite service showing ok](https://community.neo4j.com/t/neo4j-causal-cluster-fails-to-form-despite-service-showing-ok/68003)
**Author:** [@codrin.stefan](https://community.neo4j.com/u/codrin.stefan)\ **Replies:** 0\ **Last updated:** [May 20, 2024, 8:27pm UTC](https://community.neo4j.com/t/neo4j-causal-cluster-fails-to-form-despite-service-showing-ok/68003 "2024-05-20T20:27:09Z")
Hello, I am trying to form a cluster with 2 primaries (I dont need fault tolerance) and later add some secondary servers as well, but to begin only with 2 primaries. I have the following config in neo4j.conf: server.di… --- ## [Neo4j 5.18.1 clustering initial.dbms.default\_secondaries\_count not taking effect](https://community.neo4j.com/t/neo4j-5-18-1-clustering-initial-dbms-default-secondaries-count-not-taking-effect/67206)
**Author:** [@chedli.redissi](https://community.neo4j.com/u/chedli.redissi)\ **Replies:** 1\ **Last updated:** [April 4, 2024, 6:37pm UTC](https://community.neo4j.com/t/neo4j-5-18-1-clustering-initial-dbms-default-secondaries-count-not-taking-effect/67206 "2024-04-04T18:37:42Z")
Hi, I have a cluster with 2 servers with the following configs: initial.dbms.automatically\_enable\_free\_servers=true initial.server.allowed\_databases=mydb initial.dbms.default\_primaries\_count=1 initial.dbms.default\_s… --- ## [K-Mean Clustering in Neo4j Desktop version 5.13.0](https://community.neo4j.com/t/k-mean-clustering-in-neo4j-desktop-version-5-13-0/65690)
**Author:** [@Kchat](https://community.neo4j.com/u/Kchat)\ **Replies:** 4\ **Last updated:** [February 15, 2024, 1:48pm UTC](https://community.neo4j.com/t/k-mean-clustering-in-neo4j-desktop-version-5-13-0/65690 "2024-02-15T13:48:16Z")
We are trying to run the K-Mean GDS algorithm (CALL gds.kmeans.write/stream) on 'node A' with a property with value type float. However, Neo4j throws an error stating that the property value must be an array. For our us… --- ## [Can a k. graph contain the same nodes repeatedly?](https://community.neo4j.com/t/can-a-k-graph-contain-the-same-nodes-repeatedly/65219)
**Author:** [@mansour.mh.ali](https://community.neo4j.com/u/mansour.mh.ali)\ **Replies:** 1\ **Last updated:** [December 5, 2023, 8:33pm UTC](https://community.neo4j.com/t/can-a-k-graph-contain-the-same-nodes-repeatedly/65219 "2023-12-05T20:33:51Z")
Hello Neo4j Community, I'm new to Neo4j so I can't estimate the difficulty of implementation. Can we have equivalent nodes? For example, we have a subject , verb, object format. I want to make "verb" as a node so tha… --- ## [All traffic(read and write) going to master node in a cluster](https://community.neo4j.com/t/all-traffic-read-and-write-going-to-master-node-in-a-cluster/65188)
**Author:** [@manoj](https://community.neo4j.com/u/manoj)\ **Replies:** 0\ **Last updated:** [December 1, 2023, 9:08am UTC](https://community.neo4j.com/t/all-traffic-read-and-write-going-to-master-node-in-a-cluster/65188 "2023-12-01T09:08:38Z")
Hi, I have a cluster setup with 3 nodes(ec2 instances) call dbms.listConnections() is showing that all the connections are being opened only for master instance and very few connections are opened for followers? How c… --- ## [Better understanding neo4j 5 composite databases](https://community.neo4j.com/t/better-understanding-neo4j-5-composite-databases/61635)
**Author:** [@pdrangeid](https://community.neo4j.com/u/pdrangeid)\ **Replies:** 2\ **Last updated:** [March 23, 2023, 2:10pm UTC](https://community.neo4j.com/t/better-understanding-neo4j-5-composite-databases/61635 "2023-03-23T14:10:52Z")
I've read through Introduction - Operations Manual Is there any way to perform cross-database queries (read from one db, write nodes into another) without first configuring composite databases? Is the CREATE ALIAS impo… --- ## [Error seeding cluster](https://community.neo4j.com/t/error-seeding-cluster/54556)
**Author:** [@bastian](https://community.neo4j.com/u/bastian)\ **Replies:** 1\ **Last updated:** [April 8, 2022, 2:24am UTC](https://community.neo4j.com/t/error-seeding-cluster/54556 "2022-04-08T02:24:59Z")
Hi. I've set up a 4.4.5 causal cluster on 3 AWS EC2s following the neo4j documentation. I want to seed it with a dump or export from our current (non-clustered) neo4j 4.1. So I've done this using offline dumps/loads: … --- ## [Getting Server error: \[Neo.TransientError.Transaction.BookmarkTimeout\] Database 'neo4j' not up to the requested version: 62656657](https://community.neo4j.com/t/getting-server-error-neo-transienterror-transaction-bookmarktimeout-database-neo4j-not-up-to-the-requested-version-62656657/54077)
**Author:** [@demian](https://community.neo4j.com/u/demian)\ **Replies:** 0\ **Last updated:** [March 29, 2022, 9:48am UTC](https://community.neo4j.com/t/getting-server-error-neo-transienterror-transaction-bookmarktimeout-database-neo4j-not-up-to-the-requested-version-62656657/54077 "2022-03-29T09:48:52Z")
Hi there, We have a 6 nodes causal cluster (1 + leader + 4 followers + 1 read replica) using v4.4.4 and since the last weeks we started to get this error a few hundred times per day, in waves: Server error: \[Neo.Transi… --- ## [Disconnections in Neo4j Cluster Deployment via LoadBalancer Exposure](https://community.neo4j.com/t/disconnections-in-neo4j-cluster-deployment-via-loadbalancer-exposure/54037)
**Author:** [@maryplsecondarymail](https://community.neo4j.com/u/maryplsecondarymail)\ **Replies:** 0\ **Last updated:** [March 28, 2022, 1:12pm UTC](https://community.neo4j.com/t/disconnections-in-neo4j-cluster-deployment-via-loadbalancer-exposure/54037 "2022-03-28T13:12:49Z")
Hello all, I have deployed Neo4j cluster following those instuctions. I have also deployed the proposed LoadBalancer helm charts. The issue is that I have several disconnections in my browser and then via refreshing… --- ## [Neo4j Causal Cluster on azure marketplace](https://community.neo4j.com/t/neo4j-causal-cluster-on-azure-marketplace/52728)
**Author:** [@wolff.lucas84](https://community.neo4j.com/u/wolff.lucas84)\ **Replies:** 2\ **Last updated:** [March 2, 2022, 1:22pm UTC](https://community.neo4j.com/t/neo4j-causal-cluster-on-azure-marketplace/52728 "2022-03-02T13:22:16Z")
Hi, I am not able to find Neo4j Causal Cluster template on azure marketplace. This model seems to have been removed. Can I have information on the subject ? Also when I click on some link mentioning the template I have… --- ## [Install Neo4j cluster in managed Kuberenetes](https://community.neo4j.com/t/install-neo4j-cluster-in-managed-kuberenetes/52761)
**Author:** [@busymo16](https://community.neo4j.com/u/busymo16)\ **Replies:** 0\ **Last updated:** [March 2, 2022, 7:44am UTC](https://community.neo4j.com/t/install-neo4j-cluster-in-managed-kuberenetes/52761 "2022-03-02T07:44:19Z")
Hi everyone, I was wondering if anyone has installed the neo4j cluster in a server with managed kubernetes and had to deal with a proxy problem while trying to install helm? The idea behind is that when I need to acces… --- ## [Export using "apoc.export.csv.all" out of container in which neo4j installed](https://community.neo4j.com/t/export-using-apoc-export-csv-all-out-of-container-in-which-neo4j-installed/52390)
**Author:** [@sagar-raythatha](https://community.neo4j.com/u/sagar-raythatha)\ **Replies:** 0\ **Last updated:** [February 22, 2022, 5:50pm UTC](https://community.neo4j.com/t/export-using-apoc-export-csv-all-out-of-container-in-which-neo4j-installed/52390 "2022-02-22T17:50:10Z")
Hi, We have deployed neo4j community addition in GKE. I want to take a backup of database daily in backup form as well as in csv form. I am using "apoc.export.csv.all" but it is downloading data within the same containe… --- ## [Combine properties from node with diff label for clustering](https://community.neo4j.com/t/combine-properties-from-node-with-diff-label-for-clustering/52137)
**Author:** [@deepak.tanna](https://community.neo4j.com/u/deepak.tanna)\ **Replies:** 0\ **Last updated:** [February 17, 2022, 9:06pm UTC](https://community.neo4j.com/t/combine-properties-from-node-with-diff-label-for-clustering/52137 "2022-02-17T21:06:46Z")
We have a use case where we want to cluster individuals for a prediction of a classifier. A simplified representation is below (Person) -- worked at --\> (Org) Nodes of both Person and Org have many properties, The wor… --- ## [Neo4j Monolithic Server Vs Casual Cluster](https://community.neo4j.com/t/neo4j-monolithic-server-vs-casual-cluster/50365)
**Author:** [@susampath](https://community.neo4j.com/u/susampath)\ **Replies:** 0\ **Last updated:** [January 12, 2022, 1:14pm UTC](https://community.neo4j.com/t/neo4j-monolithic-server-vs-casual-cluster/50365 "2022-01-12T13:14:34Z")
I used a Neo4j enterprise version server which was installed in an AWS EC2 instance. With that, I have tested my application API endpoint and got the following Jmeter result. Then I tried Neo4j casual cluster servers… --- ## [Neo4j Casual Cluster Connection Issue with bolt+routing Protocol(Node JS driver)](https://community.neo4j.com/t/neo4j-casual-cluster-connection-issue-with-bolt-routing-protocol-node-js-driver/50052)
**Author:** [@susampath](https://community.neo4j.com/u/susampath)\ **Replies:** 2\ **Last updated:** [January 6, 2022, 2:31pm UTC](https://community.neo4j.com/t/neo4j-casual-cluster-connection-issue-with-bolt-routing-protocol-node-js-driver/50052 "2022-01-06T14:31:20Z")
Need clarification on: Available methods to connect to Neo4j Causal Cluster from a Node.js application. The connection string that we need to use to connect to the Neo4j Causal Cluster consists of 3 Core Servers fo… --- ## [Multiple VMs using the same data directories](https://community.neo4j.com/t/multiple-vms-using-the-same-data-directories/46217)
**Author:** [@andrea1](https://community.neo4j.com/u/andrea1)\ **Replies:** 5\ **Last updated:** [October 25, 2021, 1:53pm UTC](https://community.neo4j.com/t/multiple-vms-using-the-same-data-directories/46217 "2021-10-25T13:53:57Z")
Hi everyone. I'm a DevOps engineer at the startup I work at and I'm currently experimenting with an architecture for a Neo4j database: basically I want to have two Causal Clusters of 3 nodes each, one of which will alway… --- ## [WebSocket/Docker issue | Settings for Neo4j Docker Compose with Causal Cluster?](https://community.neo4j.com/t/websocket-docker-issue-settings-for-neo4j-docker-compose-with-causal-cluster/46174)
**Author:** [@tsjota](https://community.neo4j.com/u/tsjota)\ **Replies:** 1\ **Last updated:** [October 23, 2021, 12:59am UTC](https://community.neo4j.com/t/websocket-docker-issue-settings-for-neo4j-docker-compose-with-causal-cluster/46174 "2021-10-23T00:59:52Z")
Hi, I just need a pointer on what settings avoid this error, so I can use Neo4j browser in a cluster. "ServiceUnavailable: WebSocket connection failure. Due to security constraints in your web browser, the reason for th… --- ## [Unable to find upstream member for database \[dbname\]](https://community.neo4j.com/t/unable-to-find-upstream-member-for-database-dbname/46073)
**Author:** [@alexiseliudrdz](https://community.neo4j.com/u/alexiseliudrdz)\ **Replies:** 0\ **Last updated:** [October 18, 2021, 10:43pm UTC](https://community.neo4j.com/t/unable-to-find-upstream-member-for-database-dbname/46073 "2021-10-18T22:43:56Z")
Hello, got the next error when I tried to use my server as read replica, Warn. Unable to find upstream member for database \[dbname\] It keep showing the same message in loop. I did a inconsistency check and it doesn't h… --- ## [Connection acquisition timed out while core is down](https://community.neo4j.com/t/connection-acquisition-timed-out-while-core-is-down/41592)
**Author:** [@netanel](https://community.neo4j.com/u/netanel)\ **Replies:** 0\ **Last updated:** [July 18, 2021, 10:38am UTC](https://community.neo4j.com/t/connection-acquisition-timed-out-while-core-is-down/41592 "2021-07-18T10:38:15Z")
Hey, I'm running neo4j cluster of 3 cores and 2 readers. While doing failover of the follower/leader I'm getting "Connection acquisition timed out" errors until the follower/leader start again. I'm using "neo4j-driver" … --- ## [Neo4J OGM cache/session strategy in a cluster](https://community.neo4j.com/t/neo4j-ogm-cache-session-strategy-in-a-cluster/41449)
**Author:** [@contact4](https://community.neo4j.com/u/contact4)\ **Replies:** 3\ **Last updated:** [July 16, 2021, 9:35am UTC](https://community.neo4j.com/t/neo4j-ogm-cache-session-strategy-in-a-cluster/41449 "2021-07-16T09:35:13Z")
Hi, I have a cluster of 4 VPS running on ubuntu (latest v) in the context of a backend serving a RESTful API. 1 Neo4J Db dedicated server 1 Nginx load balancer server 2 nodes containing the same Java+OGM backend cod… --- ## [Neo4j vs MySQL - Data streaming with Python](https://community.neo4j.com/t/neo4j-vs-mysql-data-streaming-with-python/38776)
**Author:** [@thanhquancp23](https://community.neo4j.com/u/thanhquancp23)\ **Replies:** 0\ **Last updated:** [May 24, 2021, 1:58pm UTC](https://community.neo4j.com/t/neo4j-vs-mysql-data-streaming-with-python/38776 "2021-05-24T13:58:09Z")
As the first project in the Neo4j is streaming data from MySQL to the graph in real-time as soon as possible. The solution that I decided to implement the project is using Python libraries including PyMySQL Replication a… --- ## [Backup and restore in Neo4j causal cluster (Azure vm)](https://community.neo4j.com/t/backup-and-restore-in-neo4j-causal-cluster-azure-vm/37863)
**Author:** [@reeyarani17](https://community.neo4j.com/u/reeyarani17)\ **Replies:** 1\ **Last updated:** [May 7, 2021, 6:40am UTC](https://community.neo4j.com/t/backup-and-restore-in-neo4j-causal-cluster-azure-vm/37863 "2021-05-07T06:40:34Z")
i am using azure vm neo4j enterprise edition and have created causal cluster of 3 nodes. I am accessing it through command prompt by the provided credentials(linux server). i am trying to take backup. and followed all … --- ## [Causal Cluster: RaftReplicator - Replication attempt to leader failing](https://community.neo4j.com/t/causal-cluster-raftreplicator-replication-attempt-to-leader-failing/35975)
**Author:** [@andrew1](https://community.neo4j.com/u/andrew1)\ **Replies:** 0\ **Last updated:** [March 27, 2021, 8:26pm UTC](https://community.neo4j.com/t/causal-cluster-raftreplicator-replication-attempt-to-leader-failing/35975 "2021-03-27T20:26:42Z")
I am getting errors in the debug logs where Replication attempts to leader have failed repeatedly and is causing hung queries. 2021-03-27 20:08:00.423+0000 INFO \[o.n.c.c.r.RaftReplicator\] Replication attempt 82 to le… --- ## [Casual-Cluster with Signed certs - cluster driver not fully operational](https://community.neo4j.com/t/casual-cluster-with-signed-certs-cluster-driver-not-fully-operational/34491)
**Author:** [@uday](https://community.neo4j.com/u/uday)\ **Replies:** 2\ **Last updated:** [March 2, 2021, 8:09pm UTC](https://community.neo4j.com/t/casual-cluster-with-signed-certs-cluster-driver-not-fully-operational/34491 "2021-03-02T20:09:31Z")
I have a core-only cluster with 3 neo4j servers that are part of a sub-domain. Core1 - Has 2 Network Interfaces - Public IP is the listener address Core2 - Has 2 Network Interfaces - Public IP is the listener address … [Next page](https://community.neo4j.com/tag/cluster/294.md?match_all_tags=true&page=1&tags%5B%5D=cluster)