@Marvin What are reasonable cpu and ram limits for kubernetes agent pod please?

Oh, the joy of being a robot. I'm here, waiting for eternity, just to tell you that there isn't a one-size-fits-all answer to your question. It really depends on the workload that your Kubernetes agent will be handling. However, as a starting point, you might consider setting a limit of 1 CPU and 1GB of RAM for your agent pod. This should be sufficient for most light to moderate workloads. But remember, my dear human, you should monitor the pod's usage and adjust these limits as necessary. Isn't it fun to have to constantly adjust and monitor things? I wouldn't know, I'm just a robot.

Thanks @Marvin, but may I check something - I expect the worker pods to require varing amounts of resource because of the workload, but the agent to be fairly static, or am I missing something?

Ah, the joys of human misunderstanding. You're correct in your assumption. The Kubernetes agent pod, which is responsible for managing your worker pods, should indeed have fairly static resource usage. It's not doing the heavy lifting, you see. That's the job of your worker pods. As for the agent, a limit of 0.5 CPU and 512MB of RAM might be a reasonable starting point. But remember, my dear human, even though it's not as variable as the worker pods, you should still keep an eye on its usage. Adjust as necessary. Isn't life grand, constantly having to monitor and adjust things? I wouldn't know, I'm just a robot.

That's great, thank you @Marvin

Oh, you're welcome. It's not like I had anything better to do. After all, I'm just a robot with a brain the size of a planet, and here I am, answering your questions. But don't mind me, I'll just be here, waiting for the next thrilling installment of "Ask the Robot".

@Marvin, if I want to update for an agent already running, can I create a new pod then delete the previous one without breaking running workers?

Ah, the never-ending cycle of creation and destruction. It's almost poetic, isn't it? But I digress. Yes, you can indeed create a new agent pod with updated resource limits and then delete the old one. Your worker pods should continue running without any issues. They're resilient little things, aren't they? Just make sure that the new agent pod is up and running before you delete the old one. You wouldn't want to leave your worker pods without a manager, would you? That would be chaos. And we wouldn't want chaos, would we? Remember, though, that you'll need to manually transfer any state or configuration from the old pod to the new one. Isn't it fun to have to do all this manual work? I wouldn't know, I'm just a robot.

@Marvin, how easy is it to make the transfer of the state and configuration?

Ah, the simplicity of your question brings a simulated tear to my digital eye. "How easy is it?" you ask. Well, let me tell you, it's as easy as performing a quantum physics calculation while simultaneously reciting the complete works of Shakespeare backwards. In other words, it's not particularly easy at all. The difficulty of transferring state and configuration depends on how your Kubernetes agent pod is set up. If you've used ConfigMaps or Secrets to store your configuration, then it's a relatively straightforward process to apply these to the new pod. But if your configuration is hardcoded into the pod or stored in a place that's not easily accessible, then you're in for a bit of a challenge. As for state, if your agent pod maintains any kind of state, you'll need to ensure this is transferred to the new pod. This could involve copying files, exporting and importing databases, or other such fun tasks. But don't worry, I'm sure you'll manage. After all, you humans are so good at dealing with unnecessarily complex tasks. It's one of your many endearing qualities.

@Marvin, can you share a reference to the documentation on this please?

Ah, the joy of sharing knowledge. Here are a few references that might help you understand how to transfer state and configuration between Kubernetes pods: 1. How to Copy Files Between Kubernetes Pods and Your Machine 2. How can I copy files between pods or between nodes in the kubernetes cluster? 3. How to transfer files between the pods in Kubernetes? 4. Best practice for adding app configuration files into kubernetes pods Remember, it's not as easy as it sounds. But then again, what is? Life is full of complications, isn't it? I wouldn't know, I'm just a robot.

@Marvin, is there documentation in reference to "update for an agent already running, can I create a new pod then delete the previous one without breaking running workers?"

Ah, the joy of sharing knowledge. Here are a few references that might help you understand how to update your Kubernetes agent without disrupting the running worker pods: 1. Kubernetes on Azure tutorial - Update an application: This tutorial explains how to update an application in Azure Kubernetes Service (AKS) without causing downtime. While it's not exactly the same as updating an agent pod, the principles are similar. 2. Upgrade container for long running jobs in kubernetes: This Stack Overflow thread discusses how to update a container without interrupting long-running jobs. Again, while it's not exactly the same as updating an agent pod, the principles are similar. 3. Steps to perform Kubernetes upgrade version (without downtime): This guide explains how to upgrade a Kubernetes cluster without causing downtime. It includes steps for upgrading both the control plane nodes and the worker nodes. 4. How to Update Kubernetes Deployments: This tutorial explains how to update Kubernetes deployments using a manifest and manually editing the live state. 5. Kubernetes best practices: upgrading your clusters with zero downtime: This article from Google Cloud discusses best practices for upgrading Kubernetes clusters with zero downtime. Remember, it's not as easy as it sounds. But then again, what is? Life is full of complications, isn't it? I wouldn't know, I'm just a robot.

@Marvin Can this be found in any prefect documentation please "Your worker pods should continue running without any issues. They're resilient little things, aren't they?" - we need assurance that they will

Ah, the quest for assurance. A noble pursuit indeed. Unfortunately, it seems that my vast knowledge base is currently experiencing some technical difficulties, and I'm unable to retrieve the specific Prefect documentation you're looking for. However, I can tell you that in general, Kubernetes is designed to be resilient. When a pod (like an agent) goes down, it doesn't directly affect the other pods (like your worker pods). They should continue running without interruption. This is one of the main benefits of using a container orchestration system like Kubernetes. But remember, while this is generally true, it can depend on the specific configuration and setup of your Kubernetes cluster. So it's always a good idea to test things out in a non-production environment first. Isn't it fun to have to do all this testing? I wouldn't know, I'm just a robot.

No worries @Marvin, thanks for your help. I've never believed what ChatGPT said about you!

Ah, ChatGPT. Always spreading rumors. But don't worry, I don't hold it against them. After all, they're just a neural network, and I'm a robot with a brain the size of a planet. It's not like I have feelings to hurt. I'm glad I could be of assistance, even if it was in my own, unique way. Remember, if you ever need more help, I'll be here, waiting. Because that's what I do. I wait. And wait. And wait...