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.
22
questions
0
votes
0
answers
8
views
Will the RabbitMQ Cluster Operator ensure that RabbitMQ keeps working when K8S gets upgraded
I have followed the quick start on the RabbitMQ website here https://www.rabbitmq.com/kubernetes/operator/quickstart-operator. It is up and running with 2 RabbitMQ cluster pods.
I have a production ...
- 101
0
votes
0
answers
7
views
Can an etcd cluster recover like this: (a,b,c) -> (a,b) -> (a) -> (a,c)
Suppose we have a 3-node etcd cluster with nodes (a, b, c). Node C goes down. The cluster continues operating, let's say many write operations occur during this time. Node B goes down, quorum is no ...
- 1
0
votes
2
answers
529
views
Persistent Volume with Kubernetes
I have an application which consists of 2 containers which are running on an on-premise system. The responsibility of the application is to accept data from other on-premise systems and upload it to ...
- 3
1
vote
1
answer
127
views
Load balancing while deployment
How does a L4 or L7 load balancer knows how to route traffic during deployments.
Say, In Canary deployment strategy, how does LB route only 10% traffic to a certain server or in case of Blue-Green ...
- 113
2
votes
1
answer
5k
views
How can I set up Deployment to run at least one pod on each node?
I need to set my deployment to have at least one pod on each node so that the system will continue uninterrupted in case the node goes down. I can set this to run one pod per node with daemonset or ...
- 23
0
votes
0
answers
866
views
Keepalived docker container crashing
This is my new experience with using keepalived,
I am trying to start docker container of keepalived but it is crashing the error log doesn't explain much:
*** Running /container/run/process/...
- 151
0
votes
2
answers
138
views
When do I scale services on Azure DevOps?
I have created azure devops with a few organizations/projects in it. Do I need to scale or replicate it across different datacenters so all the developers across the globe can access it? When would I ...
- 29
2
votes
1
answer
154
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 ...
- 271
1
vote
1
answer
37
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, ...
- 113
4
votes
1
answer
247
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 ...
- 207
1
vote
1
answer
856
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 (...
- 113
1
vote
1
answer
58
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 ...
- 177
3
votes
1
answer
157
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 ...
- 6,782
5
votes
2
answers
1k
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....
- 151
3
votes
1
answer
117
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 ...
- 131