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Questions tagged [high-availability]

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High availability is an architectural consideration often involving degrees of redundancy to insure availability in case of system or component failure.

986 questions
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Context I'm operating a PKI based on step-ca (Smallstep), version 0.30.2, to issue short-lived certificates: SSH (user and host) TLS/X.509 (internal services) The CA sits behind its own ...
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We run an application on Google App Engine Flexible Environment with two services: Service default: machine e2-custom-4-8704, min_num_instances: 1, disk: pd-standard Service aux: machine e2-custom-2-...
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I've set up Grafana by deploying the official helm chart with ArgoCD. I have 3 grafana pods running. In order to achieve HA and to avoid having duplicate notifications, I set up the unified_alerting ...
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I want to setup a Kubernetes Cluster, for testing and later for prod purpose. but I am stuck with the concept of VMs running in Kubernetes. First I want to mention that I don't have a shared storage, ...
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I've been noticing a slowdown over the last week. There doesn't seem to be a ton of traffic on Google Analytics, but there seems to be a ton of unique IP addresses hitting the site. I have about 20 ...
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Background: After migrating from a VMware/local to AWS I've seen a increase in expected storage capability. Our Windows Fileserver with EBS disks, was basically a lift & shift move, and has since ...
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tw5@renegade:~$ dig @192.168.57.1 tw5.helpdesk.com ; <<>> DiG 9.18.30-0ubuntu0.24.04.2-Ubuntu <<>> @192.168.57.1 tw5.helpdesk.com ; (1 server found) ;; global options: +cmd ;; ...
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I am currently planning to configure an Active-Standby HA Cluster using two nodes. Each node has two NICs, which are added as 10.0.2.0 (ring0) and 192.168.0.0 (ring1). For testing purposes, I have ...
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1541 views

I've set up Keepalived as a load balancer but am not using a Master/Standby configuration—just a single server. The issue arises when firewalld is enabled. Without firewalld, everything works fine. ...
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It's a popular strategy for the web server to reference the current build via symlink, and to switch the symlink to deploy a new build /var/www/current -> /var/www/build-1 Is this a problem for ...
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1851 views

It's a common knowledge that HA involves redundant nodes, but for the quorum it needs odd number of nodes, to have a tie breaker in case of cluster partition. That means, quorum-based cluster has to ...
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Our college lab consists of 10 Ubuntu desktops, each currently set up as standalone machines on the LAN. I want to transition them to a centrally managed environment while avoiding common pitfalls. I ...
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keepalived conf on node01: vrrp_track_process track_haproxy { process haproxy weight 10 } vrrp_instance VI_1 { state MASTER interface ens33 virtual_router_id 51 ...
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Generally when I look around or try to understand the HA setup for Prometheus the most common search results are Cortex & Thanos. I've also seen M3 and Victoriametrics on the list. What I ...
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I am trying to set up auto-unseal for hashicorp vault using the transit secrets engine and two HA clusters. Cluster A is responsible for unsealing cluster B. My issue is that Cluster B (the main ...

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