tomaszwostal/k8sgpt

Giving Kubernetes SRE superpowers to everyone

k8sgpt is a tool for scanning your Kubernetes clusters, diagnosing, and triaging issues in simple English.

It has SRE experience codified into its analyzers and helps to pull out the most relevant information to enrich it with AI.

Installation

Linux/Mac via brew

brew tap k8sgpt-ai/k8sgpt
brew install k8sgpt

Failing Installation on WSL or Linux (missing gcc)

When installing Homebrew on WSL or Linux, you may encounter the following error:

==> Installing k8sgpt from k8sgpt-ai/k8sgpt Error: The following formula cannot be installed from a bottle and must be 
built from the source. k8sgpt Install Clang or run brew install gcc.

If you install gcc as suggested, the problem will persist. Therefore, you need to install the build-essential package.

   sudo apt-get update
   sudo apt-get install build-essential

Windows

• Download the latest Windows binaries of k8sgpt from the Release tab based on your system architecture.
• Extract the downloaded package to your desired location. Configure the system path variable with the binary location

Verify installation

• Run k8sgpt version

Quick Start

• Currently the default AI provider is OpenAI, you will need to generate an API key from OpenAI
  • You can do this by running k8sgpt generate to open a browser link to generate it
• Run k8sgpt auth to set it in k8sgpt.
  • You can provide the password directly using the --password flag.
• Run k8sgpt filters to manage the active filters used by the analyzer. By default, all filters are executed during analysis.
• Run k8sgpt analyze to run a scan.
• And use k8sgpt analyze --explain to get a more detailed explanation of the issues.

Analyzers

K8sGPT uses analyzers to triage and diagnose issues in your cluster. It has a set of analyzers that are built in, but you will be able to write your own analyzers.

Built in analyzers

Enabled by default

• podAnalyzer
• pvcAnalyzer
• rsAnalyzer
• serviceAnalyzer
• eventAnalyzer
• ingressAnalyzer

Optional

• hpaAnalyzer
• pdbAnalyzer

Usage

Usage:
  k8sgpt [command]

Available Commands:
  analyze     This command will find problems within your Kubernetes cluster
  auth        Authenticate with your chosen backend
  completion  Generate the autocompletion script for the specified shell
  filters     Manage filters for analyzing Kubernetes resources
  generate    Generate Key for your chosen backend (opens browser)
  help        Help about any command
  version     Print the version number of k8sgpt

Flags:
      --config string       config file (default is $HOME/.k8sgpt.git.yaml)
  -h, --help                help for k8sgpt
      --kubeconfig string   Path to a kubeconfig. Only required if out-of-cluster.
      --master string       The address of the Kubernetes API server. Overrides any value in kubeconfig. Only required if out-of-cluster.
  -t, --toggle              Help message for toggle

Use "k8sgpt [command] --help" for more information about a command.

Manage filters

List filters

k8sgpt filters list

Add default filters

k8sgpt filters add [filter(s)]

Examples :

• Simple filter : k8sgpt filters add Service
• Multiple filters : k8sgpt filters add Ingress,Pod

Add default filters

k8sgpt filters remove [filter(s)]

Examples :

• Simple filter : k8sgpt filters remove Service
• Multiple filters : k8sgpt filters remove Ingress,Pod

Run a scan with the default analyzers

k8sgpt generate
k8sgpt auth
k8sgpt analyze --explain

Filter on resource

k8sgpt analyze --explain --filter=Service

Filter by namespace

k8sgpt analyze --explain --filter=Pod --namespace=default

Output to JSON

k8sgpt analyze --explain --filter=Service --output=json

Upcoming major milestones

• Multiple AI backend support
• Custom AI/ML model backend support
• Custom analyzers

What about kubectl-ai?

The kubectl-ai project uses AI to create manifests and apply them to the cluster. It is not what we are trying to do here, it is focusing on writing YAML manifests.

K8sgpt is focused on triaging and diagnosing issues in your cluster. It is a tool for SRE, Platform & DevOps engineers to help them understand what is going on in their cluster. Cutting through the noise of logs and multiple tools to find the root cause of an issue.

Configuration

k8sgpt stores config data in ~/.k8sgpt.yaml the data is stored in plain text, including your OpenAI key.

Contributing

Please read our contributing guide.

Community

Find us on Slack