🚦 Popeye – Kubernetes Cluster Sanitizer

Popeye scans your Kubernetes cluster for misconfigurations, deprecated APIs, and common issues. It’s like a linter for your cluster.

1. 🔧 Installation

brew install derailed/popeye/popeye   # macOS/Linux

Or download latest binary: https://github.com/derailed/popeye/releases (opens in a new tab)

2. ⚙️ Usage

• Run a cluster scan:

popeye

• Save report to file:

popeye --save

• Output in JSON/YAML:

popeye -o json

3. ✅ What It Checks

• Dangling services
• Deprecated APIs
• Pods with no resource requests/limits
• ConfigMaps/Secrets not mounted
• Workloads without probes

4. 📑 Summary

Popeye is your K8s cluster doctor → run it regularly to spot issues before they break production.

📜 Stern – Kubernetes Log Tailing Made Easy

Stern tails logs from multiple pods/containers simultaneously, filtering by regex. Much faster than kubectl logs.

1. 🔧 Installation

brew install stern      # macOS/Linux

Or download binary: https://github.com/stern/stern/releases (opens in a new tab)

2. ⚙️ Usage

• Tail logs of all pods matching name:

stern my-app

• Tail logs for specific namespace:

stern my-app -n dev

• Filter by container name:

stern my-app -c nginx

• Show last 50 log lines + follow:

stern my-app --tail 50

3. ✅ Summary

Stern makes multi-pod debugging painless, especially with microservices spitting logs everywhere.

🖥️ kube-ps1 – K8s Context in Your Shell Prompt

kube-ps1 is a shell extension that shows your current Kubernetes context & namespace in the prompt. Helps avoid “oops, I just ran in prod” mistakes.

1. 🔧 Installation

brew install kube-ps1

Or clone repo:

git clone https://github.com/jonmosco/kube-ps1.git ~/.kube-ps1

2. ⚙️ Setup

Add to your shell profile (~/.bashrc or ~/.zshrc):

source ~/.kube-ps1/kube-ps1.sh
PS1='$(kube_ps1)'$PS1

Reload shell:

source ~/.zshrc   # or ~/.bashrc

3. 🧭 Usage

• Prompt now shows:

(⎈ |dev-cluster:payments) user@host $

• Change colors or toggle display:

KUBE_PS1_SYMBOL_ENABLE=false

4. ✅ Summary

• Popeye → scans cluster for issues.
• Stern → tails logs across pods.
• kube-ps1 → keeps you aware of cluster/context in your terminal.