Episode #125 of the Stack Overflow podcast is here. We talk Tilde Club and mechanical keyboards. Listen now

Questions tagged [high-availability]

If a question is about preventing that a service goes down if one node is shutdown and needs to keep on running then this tag could be used.

Filter by
Sorted by
Tagged with
1
vote
0answers
18 views

Recommended Design - Communication among Jenkins + Vault + App

Design A: CD tool communicate with Vault to fetch App secrets on its behalf Jenkins ( CD tool ) computes the Vault path according to the app/project & according to which environment the app will ...
1
vote
1answer
22 views

When should an application be copied to a new region?

I'm taking my first course For AWS cloud practitioner and I am curious: The case: I have a single, client-facing application hosted on an EC2 instance. Let's keep it simple and say it's brochureware, ...
0
votes
1answer
25 views

How to handle availability zones and failover with ansible? Is it even within the scope of ansible?

I am only getting started with ansible. I want to set up a new development infrastructure with the infrastructure as code principle. First thing I'll have to prove is a Jenkins instance with a few ...
0
votes
0answers
5 views

Failing over pgbouncer using existing haproxy

I'm working on figuring out how to fail over pgbouncer, I've looked at the FAQ and have decided to go the haproxy route as we already are using it for other things. My issue comes in that I am unsure ...
0
votes
1answer
33 views

When setting up HashiCorp Vault in HA mode, is it normal that you have to unseal each Vault node?

My goal has been to setup Vault in HA mode. Based on the docs, I was under the assumption that if you had a node that is in 'standby' it would forward to the active node, thus not having to unseal (...
0
votes
0answers
18 views

Maintaining constant VM number over multiple datacenters

I am working on a highly-available Kubernetes cluster. Basically, the idea is having two Kubernetes worker nodes (with same pods on each) in separate datacenters (say DC-1 and DC-2), and if one of ...
0
votes
0answers
328 views

Create MariaDB/MySQL HA Cluster on Kubernetes using master-master replication

I want to deploy high avaliable web apps that require a MySQL database on a multi note Kubernetes cluster. Having never deployed any SQL cluster, I learned that there are master-master and master-...
1
vote
1answer
41 views

If we are using Kubernetes do we need to implement HA on both the infrastructure and application level?

Is this something that's going to be covered at the application level with pod autoscaling? Or should we implement both horizontal pod autoscaling and infrastructure high availability within our cloud ...
0
votes
0answers
116 views

Zabbix on docker containers

I want to build highly available Zabbix service for my infrastructure. I am considering it on VMs or in containers. I already know the case of running Zabbix in VM, yet I am not aware of pros, and ...
3
votes
1answer
56 views

What are vertical scalability limits of JFrog Artifactory Pro?

The essential feature of JFrog Enterprise over JFrog Pro (X) is that it introduces high availability and site replication support. Obviously, operations in geographically distributed organizations ...
4
votes
2answers
290 views

How to create high availability databases?

With modern techniques, it's relatively trivial to create a clustered, high-availability solution for webservers by using docker (or comparable) to handle the front-end serving of pages to users. e.g....
3
votes
1answer
90 views

Mysql with Kubernetes

I am converting a webapp from monolithic to kubernetes based architecture. But how can mysql be persistent with data when we have 2 mysql pods in each of 2 differnet nodes? I think we can mount a ...
3
votes
1answer
2k views

How can I simulate failure of an AWS Availability Zone?

In order to test that our load balancers and Multi-AZ RDS instances are working the way I'd expect them to, I'd like to simulate failure of an AWS Availability Zone. Short of locating one of the ...
2
votes
2answers
1k views

Does HA-git exist?

For the second time in three months, bitbucket is down https://status.developer.atlassian.com/ Now I wonder whether HA-git is possible or we should switch. Thanks to this it will be hard to finish ...
1
vote
1answer
19 views

Measure service unavailability during upgrade

I am deploying a microservices - based application using an orchestrator (Rancher specifically). During the service upgrade (when new images are being pulled and services re-discover one another), ...
4
votes
1answer
107 views

Is making kubernetes masters schedulable a really bad idea?

It's a cash strapped start-up. What are the worst consequences of running only three nodes, three schedulable masters? Are there some ways can one mitigate against the risks?
2
votes
2answers
827 views

What are best practices for running Hashicorp's Vault in terms of high availability?

The Production Hardening document indicates how to harden Vault for production purposes, but what if Vault is run on for example Digital Ocean and the platform is unavailable or the disk gets ...