Questions tagged [cluster]

Question 1

I am planning a Hyper-V Failover Cluster on Windows Server 2022 for a customer. They have HP ProLiant DL380 Gen11 servers and MSA2060 FC SAN with required licenses and cables. I requested Active ...

Question 2

I had a 3 node cluster with nodes: rabbitmq-01 rabbitmq-02 rabbitmq-03. The hosts file contains the names and the IP address of those hosts so they are able to reach each other via those names. The ...

Question 3

We have an 8-node Apache NiFi cluster with an external Zookeeper cluster, running on three separated networks: Service Management Backup Currently all NiFi and Zookeeper communication runs through ...

Question 4

I have a SQL Server Availability group which sits atop of a WSFC on a Windows Domain. There are two nodes in the cluster, both of which are SQL Server availability group replicas My SQL Server ...

Question 5

Some years ago I wrote a checkcommand for ldirectord in Perl, hard-coding the patch of the required configuration file. The checktypeis set to external-perl. When porting the configuration to a new ...

Question 6

I have two web servers (WebSrv-1 and WebSrv-2) connected to an HAProxy load balancer. Unlike failover clusters or Windows load balancing setups, the HAProxy setup doesn’t use a virtual IP—it's ...

Question 7

I have a WSFC file server cluster set up (WS 2025). There is a client access point configured: ClientsGoHere.mydomain.com When I browse to \\ClientsGoHere in Windows Explorer, I'm greeted with the ...

Question 8

So as the question says, I am in the process of migrating to new compute nodes. The new servers are HPE Proliant DL360 Gen 10 and the operating system installed is Ubuntu. These are the specifications ...

Question 9

I am creating a SQL Cluster in Azure. This SQL cluster is mostly based on the Microsoft documentation article called "Tutorial: Configure an availability group in multiple subnets (SQL Server on ...

Question 10

I have 3 pc with almalinux9.5 and mongodb v6. The 3 ips are 10.17.60.102, 10.17.60.103, 10.17.60.104 . In all 3 pc I edited the mongod.conf file in this way: # mongod.conf, Percona Server for MongoDB #...

Question 11

I need some advices or best practices advices about SAN values on certificates. Here's the context : We got 2 servers that host the same application (clustered app on active-active mode). On top, we ...

Question 12

An OCFS2 cluster with two nodes is attempting to work with storage that has two block devices. These devices are shared via iSCSI and are visible on both nodes. Smaller disk (230 gb) utilized for ...

Question 13

I have a script that collects information from multiple ssh hosts at once, so it needs the ssh passphrase to be unlocked and loaded into ssh-agent before spawning connections in parallel. All hosts ...

Question 14

Objective: I have a cluster managed by the pacemaker, I want my postfix resource to depend on clamav-daemon.service and mailscanner.service. If either one of these two resources fail, the IP jumps. I ...

Question 15

As we know in a Redis Cluster, data is divided into shards, with each shard being managed by a master node and one or more replica nodes. The problem I want to tackle is the case where master and ...

Question 16

I'm not sure if this question is more adequate to be asked here, in Super User or Unix Exchange but this seemed like the best forum to me. I'm used to virtualizing several VM's in a single host. I ...

Question 17

Where are the possible places to configure K8S using a proxy as it repeats "proxyconnect tcp: dial tcp 127.0.0.1:1082: connect: connection refused" during setting up Ray Cluster? Follow ...

Question 18

I have a simple question. Why Ceph Dashboard => Block => Images in column "Usage" does not show the size for dynamically created Persistent Volume? If I create a static volume then, ...

Question 19

I am using official helm chart to install the APISIX in my Kubernetes. I only override the following values from the official helm chart: useDaemonSet-> true serviceAccount -> set create to ...

Question 20

Can someone please advise me what could be the cause of this condition? I have a Rook Ceph cluster on which MySQL database with 3x replication is stored. This database is used by me for development ...

Question 21

So I have a function running in my kubernetes cluster. NAME BUILDSTATE SERVINGSTATE BUILDER SERVING ADDRESS AGE minio-event ...

Question 22

I am running Windows Server 2019 in Virtual Machine Manager on a Synology High Availability cluster. Today I switched the server to the passive node and now Windows Server 2019 is no longer activated. ...

Question 23

I currently have 3 clusters in vCenter, all with their own ESXi hosts and VM's running on those resources. I want to enable and utilize vSAN within 1 cluster for now and then expand it throughout the ...

Question 24

#!/bin/sh ovsdb-tool create-cluster /host/var/lib/openvswitch/conf.db /usr/share/openvswitch/vswitch.ovsschema tcp:0.0.0.0:6632 2> /dev/null ovsdb-server \ --unixctl=/host/var/run/openvswitch/...

Question 25

I'm working on a cluster of web servers that use local filesystem as storage for media files. These clustered servers are balanced. The served webpages gets some images or video from this repository, ...

Question 26

I have an EKS cluster with public/private access on a VPC with public and private subnets. I've setup my ALB in the public subnets on port 80, internet-facing and ip and installed the AWS controller ...

Question 27

I have an active passive pacemaker Cluster for vms running with drbd 84 and corosync in centos7. AS centos7 eol is coming soon I am in the need of upgrading the cluster to a newer distribution. ...

Question 28

I am deploying a ceph cluster, the cluster will have three controller servers and 27 osd nodes. Each osd node has 3x3.8Tb nvme + 1x1.9Tb nvme disks, for a total of 4 nvme disks per node. The failure ...

Question 29

I am looking at deploying a Redis cluster (3masters, 3workers/slaves) on Kubernetes. I found the Redis Operator as being the best option but the “capability level” doesn’t look that attractive to me. ...

Question 30

I'm learning about force starting a cluster in the event of a DR. https://learn.microsoft.com/en-us/windows-server/failover-clustering/manage-cluster-quorum#prevent-quorum-on-remaining-cluster-nodes ...

Question 31

In a 2 node wsfc with file share witness, each node has got 1 vote, and the witness also has got 1 vote. Total 3 votes. Given that we have concepts of dynamic quorum, dynamic witness; when the file ...

Question 32

The guy who administrates our cluster died suddenly and recently, so now we have to operate it ourselves until a new guy comes in. We want to change the hard runtime limit of a node on our cluster. ...

Question 33

I want to setup a server cluster which can keep by servers as busy as possible while still giving fair compute time to everyone. I have setup a basic Kubernetes setup but the issue is that if some ...

Question 34

We have done the testing and confirmed the following system behavior of MariaDB-Galera clustering: The first-time bootstrap always needs to get everything correct, including the sst_user credentials ...

Question 35

On a couple of my servers in a DNS cluster running CloudLinux and PowerDNS, I've been receiving the following in my LFD Log Scanner Reports: pdns[2569215]: Received NOTIFY for example.com from 54.39....

Question 36

Is it possible to deploy to GKE Autopilot cluster without YAML and just command line? I have inherited a project where deployment generates command line to deploy to CloudRun. I am in the process of ...

Question 37

My setup has previously been one control node (non-HA) and a few worker nodes on Kubernetes. New I'm building up a new cluster with three control nodes (HA) and 9 worker nodes. Connection from browser ...

Question 38

Is there a way to have a single running process in a 4 node setup on Windows Server? And if the node running the process goes off, to automatically start it on one of the remaining 3 nodes? Currently ...

Question 39

I've set up a cluster using Slurm, consisting of a head node, 16 compute nodes, and an NAS with NFS-4 network shared storage. I've recently installed Slurm on Ubuntu v22 via apt (sinfo -V reveals ...

Question 40

We have a Windows failover cluster containing a shared disk assigned to a Role and want to set up replication from it. We tried removing the disk from the cluster to use DFS Replication, however we ...

Question 41

I have two servers with NLB and ARR. And I have two IIS servers behind ARR. For now, as I tested, it only routes 80 and 443 ports. Can I route all ports (or may be defined ones) from ARR to IIS ...

Question 42

I am working on a distributed HA cloud system and I have a Galera Cluster with 3 separated servers in Docker Swarm. It works as expected. I have 3 separated services for the Galera members due to ...

Question 43

A client of mine asked a question that I'm not really sure how to answer correctly. His question is: In case of one node falls out of the cluster, stays offline for a few hours or days and then comes ...

Question 44

Is the Linux tool chroot generally usable in a Docker container running in clusters and cloud platforms? (background) I'm developing an application where I may need to use chroot inside a Docker ...

Question 45

I have a DRBD cluster and one node was switched off for a couple of days. The single node ran fine without a hiccup. When i switch it on I got into a situation where all resources got stopped and one ...

Question 46

The setup I admin the backend for a website that currently exists on a single node using Nginx (webserver), Neo4J (database) and Wildfly (app server). The website is getting enough traffic that we ...

Question 47

I have about a dozen clusters that i monitor daily. I use the Failover Cluster Manager under MMC for a dashboard view of the clusters. Two things i am looking for. Where are the cluster names that ...

Question 48

Let us assume that we have a pool of some 50 computers with 6 cores and 12 threads each. If someone plans to use it for intensive astrophysics simulation using all of its logical CPUs (50*12) for 24x7,...

Question 49

I had the problem of unrelated data aborting in a HA cluster and my Mysql resource was in standalone on both nodes, I managed to solve the problem and both nodes are synchronized, the problem now is ...

Question 50

I have a high availability cluster with two nodes configured, after a maintenance carried out by an external company when restarting the system my mysql resource stopped working. when executing the ...