100 lines
3.5 KiB
Bash
Executable File
100 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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# Script to fix "too many open files" error in Kubernetes
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# This error occurs when the system hits inotify limits
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echo "🔧 Fixing Kubernetes inotify limits..."
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# Check if we're running on macOS (Docker Desktop) or Linux
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if [[ "$(uname)" == "Darwin" ]]; then
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echo "🍎 Detected macOS - Docker Desktop environment"
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echo ""
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echo "For Docker Desktop on macOS, you need to:"
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echo "1. Open Docker Desktop settings"
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echo "2. Go to 'Resources' -> 'Advanced'"
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echo "3. Increase the memory allocation (recommended: 8GB+)"
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echo "4. Restart Docker Desktop"
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echo ""
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echo "Alternatively, you can run:"
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echo "docker system prune -a --volumes"
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echo "Then restart Docker Desktop"
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# Also check if we can adjust macOS system limits
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echo ""
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echo "Checking current macOS inotify limits..."
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sysctl kern.maxfilesperproc
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sysctl kern.maxfiles
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echo ""
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echo "To increase macOS limits permanently, add to /etc/sysctl.conf:"
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echo "kern.maxfiles=1048576"
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echo "kern.maxfilesperproc=65536"
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echo "Then run: sudo sysctl -w kern.maxfiles=1048576"
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echo "And: sudo sysctl -w kern.maxfilesperproc=65536"
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elif [[ "$(uname)" == "Linux" ]]; then
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echo "🐧 Detected Linux environment"
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# Check if we're in a Kubernetes cluster
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if kubectl cluster-info >/dev/null 2>&1; then
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echo "🎯 Detected Kubernetes cluster"
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# Check current inotify limits
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echo ""
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echo "Current inotify limits:"
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sysctl fs.inotify.max_user_watches
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sysctl fs.inotify.max_user_instances
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sysctl fs.inotify.max_queued_events
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# Increase limits temporarily
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echo ""
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echo "Increasing inotify limits temporarily..."
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sudo sysctl -w fs.inotify.max_user_watches=524288
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sudo sysctl -w fs.inotify.max_user_instances=1024
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sudo sysctl -w fs.inotify.max_queued_events=16384
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# Verify changes
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echo ""
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echo "New inotify limits:"
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sysctl fs.inotify.max_user_watches
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sysctl fs.inotify.max_user_instances
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sysctl fs.inotify.max_queued_events
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# Check if we can make permanent changes
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if [[ -f /etc/sysctl.conf ]]; then
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echo ""
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echo "Making inotify limits permanent..."
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sudo bash -c 'cat >> /etc/sysctl.conf << EOF
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# Increased inotify limits for Kubernetes
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fs.inotify.max_user_watches=524288
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fs.inotify.max_user_instances=1024
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fs.inotify.max_queued_events=16384
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EOF'
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sudo sysctl -p
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fi
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# Check for Docker containers that might need restarting
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echo ""
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echo "Checking for running containers that might need restarting..."
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docker ps --format "{{.Names}}" | while read container; do
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echo "Restarting container: $container"
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docker restart "$container" >/dev/null 2>&1 || echo "Failed to restart $container"
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done
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else
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echo "⚠️ Kubernetes cluster not detected"
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echo "This script should be run on a Kubernetes node or with kubectl access"
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fi
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else
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echo "❓ Unsupported operating system: $(uname)"
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fi
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echo ""
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echo "📋 Additional recommendations:"
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echo "1. For Kind clusters: kind delete cluster && kind create cluster"
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echo "2. For Minikube: minikube stop && minikube start"
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echo "3. For production: Adjust node system limits and restart kubelet"
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echo "4. Consider adding resource limits to your deployments"
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echo ""
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echo "✅ Inotify fix script completed!" |