Add comprehensive system enhancements and shell configurations
Following the μέτρον principle of durable, thoughtful solutions: Shell Configuration: - Add refined .zshrc with modular architecture - Include .p10k.zsh for Powerlevel10k prompt - Add .zprofile for login shell configuration - Update aliases with new dotfiles management tools System Management Tools: - safe-update.sh: System updates with rollback protection - detect-drift.sh: Configuration drift detection - system-health.sh: Comprehensive health monitoring - generate-lockfile.sh: Version tracking for reproducibility Documentation: - ARCHITECTURE.md: Philosophy and design rationale - USAGE.md: Practical guide and troubleshooting Other Updates: - Update symlinks.sh to manage all config files - Add .vimrc configuration - Create Brewfile.lock for version pinning These enhancements provide visibility, safety, and maintainability while following the prime directive of prioritizing durability. 🖖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
David F Glidden
co-authored by
Claude
Claude
parent
92b0ead991
commit
1f543d195b
Executable
+342
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#!/usr/bin/env bash
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# System health monitoring and observability
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# Provides insights into system performance and potential issues
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set -euo pipefail
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DOTFILES_DIR="$HOME/dotfiles"
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HEALTH_LOG_DIR="$HOME/.health-logs"
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TIMESTAMP=$(date +%Y%m%d_%H%M%S)
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HEALTH_LOG="$HEALTH_LOG_DIR/health-$TIMESTAMP.json"
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# Colors
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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RED='\033[0;31m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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# Create log directory
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mkdir -p "$HEALTH_LOG_DIR"
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# Function to check system resources
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check_system_resources() {
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local cpu_usage memory_usage disk_usage
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# CPU usage (1-minute load average normalized by CPU count)
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local load_avg=$(uptime | awk -F'load averages: ' '{print $2}' | cut -d' ' -f1)
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local cpu_count=$(sysctl -n hw.ncpu)
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cpu_usage=$(echo "scale=2; $load_avg / $cpu_count * 100" | bc -l 2>/dev/null || echo "0")
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# Memory usage
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local mem_stats=$(vm_stat | grep -E "(free|inactive|wired|compressed)")
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local page_size=$(vm_stat | head -1 | grep -o '[0-9]*')
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local free_pages=$(echo "$mem_stats" | grep "free" | awk '{print $3}' | tr -d '.')
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local inactive_pages=$(echo "$mem_stats" | grep "inactive" | awk '{print $3}' | tr -d '.')
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local wired_pages=$(echo "$mem_stats" | grep "wired" | awk '{print $4}' | tr -d '.')
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local compressed_pages=$(echo "$mem_stats" | grep "compressed" | awk '{print $4}' | tr -d '.')
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local total_mem=$(echo "($free_pages + $inactive_pages + $wired_pages + $compressed_pages) * $page_size / 1024 / 1024" | bc -l)
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local used_mem=$(echo "($wired_pages + $compressed_pages) * $page_size / 1024 / 1024" | bc -l)
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memory_usage=$(echo "scale=2; $used_mem / $total_mem * 100" | bc -l)
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# Disk usage for root volume
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disk_usage=$(df -h / | awk 'NR==2 {print $5}' | tr -d '%')
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echo "{\"cpu_usage\": $cpu_usage, \"memory_usage\": $memory_usage, \"disk_usage\": $disk_usage}"
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}
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# Function to check critical services
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check_critical_services() {
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local services=("Homebrew" "Git" "Zsh" "SSH")
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local service_status=()
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# Homebrew
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if command -v brew >/dev/null 2>&1 && brew --version >/dev/null 2>&1; then
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service_status+=('"Homebrew": "healthy"')
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else
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service_status+=('"Homebrew": "unhealthy"')
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fi
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# Git
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if command -v git >/dev/null 2>&1 && git --version >/dev/null 2>&1; then
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service_status+=('"Git": "healthy"')
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else
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service_status+=('"Git": "unhealthy"')
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fi
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# Zsh
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if [[ -f "$HOME/.zshrc" ]] && zsh -c "source $HOME/.zshrc" >/dev/null 2>&1; then
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service_status+=('"Zsh": "healthy"')
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else
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service_status+=('"Zsh": "unhealthy"')
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fi
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# SSH
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if [[ -d "$HOME/.ssh" ]] && [[ -f "$HOME/.ssh/config" ]]; then
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service_status+=('"SSH": "healthy"')
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else
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service_status+=('"SSH": "degraded"')
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fi
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echo "{$(IFS=', '; echo "${service_status[*]}")}"
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}
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# Function to check package health
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check_package_health() {
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local total_packages outdated_packages broken_packages
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# Count total packages
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total_packages=$(( $(brew list --formula | wc -l) + $(brew list --cask | wc -l) ))
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# Count outdated packages
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outdated_packages=$(brew outdated | wc -l | tr -d ' ')
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# Check for broken packages
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broken_packages=$(brew doctor 2>&1 | grep -c "Warning\|Error" || echo "0")
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echo "{\"total_packages\": $total_packages, \"outdated_packages\": $outdated_packages, \"broken_packages\": $broken_packages}"
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}
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# Function to check shell performance
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check_shell_performance() {
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local shell_load_time plugin_count
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# Measure shell load time (rough approximation)
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shell_load_time=$(time (zsh -i -c exit) 2>&1 | grep real | awk '{print $2}' | sed 's/[ms]//g' || echo "0.0")
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# Count loaded plugins (if using antidote)
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if [[ -f "$HOME/dotfiles/shell/.zsh-plugins.txt" ]]; then
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plugin_count=$(grep -v '^#' "$HOME/dotfiles/shell/.zsh-plugins.txt" | grep -v '^$' | wc -l | tr -d ' ')
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else
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plugin_count=0
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fi
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echo "{\"shell_load_time\": \"$shell_load_time\", \"plugin_count\": $plugin_count}"
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}
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# Function to check network connectivity
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check_network_health() {
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local internet_status dns_status github_status
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# Internet connectivity
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if ping -c 1 8.8.8.8 >/dev/null 2>&1; then
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internet_status="connected"
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else
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internet_status="disconnected"
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fi
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# DNS resolution
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if nslookup google.com >/dev/null 2>&1; then
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dns_status="working"
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else
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dns_status="failing"
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fi
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# GitHub connectivity (important for development)
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if curl -s --connect-timeout 5 https://github.com >/dev/null 2>&1; then
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github_status="accessible"
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else
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github_status="inaccessible"
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fi
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echo "{\"internet\": \"$internet_status\", \"dns\": \"$dns_status\", \"github\": \"$github_status\"}"
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}
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# Function to check security posture
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check_security_health() {
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local ssh_key_count gpg_key_count firewall_status
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# Count SSH keys
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ssh_key_count=$(find "$HOME/.ssh" -name "id_*" -not -name "*.pub" 2>/dev/null | wc -l | tr -d ' ')
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# Count GPG keys
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gpg_key_count=$(gpg --list-secret-keys 2>/dev/null | grep -c "^sec" || echo "0")
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# Check firewall status
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if sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate 2>/dev/null | grep -q "enabled"; then
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firewall_status="enabled"
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else
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firewall_status="disabled"
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fi
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echo "{\"ssh_keys\": $ssh_key_count, \"gpg_keys\": $gpg_key_count, \"firewall\": \"$firewall_status\"}"
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}
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# Function to assess overall health
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assess_overall_health() {
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local resources services packages shell network security
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local cpu_ok mem_ok disk_ok services_ok packages_ok overall_status
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# Parse component health
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resources=$(check_system_resources)
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services=$(check_critical_services)
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packages=$(check_package_health)
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shell=$(check_shell_performance)
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network=$(check_network_health)
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security=$(check_security_health)
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# Assess individual components
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cpu_usage=$(echo "$resources" | jq -r '.cpu_usage' 2>/dev/null || echo "0")
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mem_usage=$(echo "$resources" | jq -r '.memory_usage' 2>/dev/null || echo "0")
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disk_usage=$(echo "$resources" | jq -r '.disk_usage' 2>/dev/null || echo "0")
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# Simple health rules
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cpu_ok=$(echo "$cpu_usage < 80" | bc -l)
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mem_ok=$(echo "$mem_usage < 85" | bc -l)
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disk_ok=$(echo "$disk_usage < 90" | bc -l)
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services_ok=1
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if echo "$services" | grep -q "unhealthy"; then
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services_ok=0
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fi
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packages_ok=1
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broken_count=$(echo "$packages" | jq -r '.broken_packages' 2>/dev/null || echo "0")
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if [[ "$broken_count" -gt 0 ]]; then
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packages_ok=0
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fi
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# Overall assessment
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if [[ "$cpu_ok" == "1" && "$mem_ok" == "1" && "$disk_ok" == "1" && "$services_ok" == "1" && "$packages_ok" == "1" ]]; then
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overall_status="healthy"
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elif [[ "$services_ok" == "0" || "$packages_ok" == "0" ]]; then
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overall_status="unhealthy"
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else
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overall_status="degraded"
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fi
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# Create comprehensive health report
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cat > "$HEALTH_LOG" << EOF
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{
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"timestamp": "$(date -Iseconds)",
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"system": "$(sw_vers -productVersion)",
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"hostname": "$(hostname)",
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"overall_status": "$overall_status",
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"components": {
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"resources": $resources,
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"services": $services,
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"packages": $packages,
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"shell": $shell,
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"network": $network,
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"security": $security
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},
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"recommendations": []
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}
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EOF
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# Add recommendations based on findings
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if [[ "$cpu_ok" == "0" ]]; then
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echo "$(jq '.recommendations += ["High CPU usage detected - consider closing applications"]' "$HEALTH_LOG")" > "$HEALTH_LOG"
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fi
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if [[ "$mem_ok" == "0" ]]; then
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echo "$(jq '.recommendations += ["High memory usage detected - consider restarting applications"]' "$HEALTH_LOG")" > "$HEALTH_LOG"
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fi
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if [[ "$disk_ok" == "0" ]]; then
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echo "$(jq '.recommendations += ["Low disk space - consider cleanup with: brew cleanup"]' "$HEALTH_LOG")" > "$HEALTH_LOG"
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fi
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echo "$overall_status"
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}
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# Function to display health dashboard
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display_dashboard() {
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local overall_status
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echo -e "${BLUE}System Health Dashboard${NC}"
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echo "========================"
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overall_status=$(assess_overall_health)
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case "$overall_status" in
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"healthy")
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echo -e "${GREEN}✅ System Status: HEALTHY${NC}"
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;;
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"degraded")
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echo -e "${YELLOW}⚠️ System Status: DEGRADED${NC}"
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;;
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"unhealthy")
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echo -e "${RED}❌ System Status: UNHEALTHY${NC}"
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;;
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esac
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echo ""
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echo "Component Details:"
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# Resources
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local resources=$(jq -r '.components.resources | "CPU: \(.cpu_usage)% | Memory: \(.memory_usage)% | Disk: \(.disk_usage)%"' "$HEALTH_LOG" 2>/dev/null || echo "Resources: N/A")
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echo " Resources: $resources"
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# Services
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local unhealthy_services=$(jq -r '.components.services | to_entries[] | select(.value == "unhealthy") | .key' "$HEALTH_LOG" 2>/dev/null)
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if [[ -n "$unhealthy_services" ]]; then
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echo -e " ${RED}Unhealthy Services: $unhealthy_services${NC}"
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else
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echo -e " ${GREEN}Services: All healthy${NC}"
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fi
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# Packages
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local outdated=$(jq -r '.components.packages.outdated_packages' "$HEALTH_LOG" 2>/dev/null || echo "0")
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local broken=$(jq -r '.components.packages.broken_packages' "$HEALTH_LOG" 2>/dev/null || echo "0")
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echo " Packages: $outdated outdated, $broken broken"
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# Network
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local network_status=$(jq -r '.components.network | "Internet: \(.internet) | DNS: \(.dns) | GitHub: \(.github)"' "$HEALTH_LOG" 2>/dev/null || echo "Network: N/A")
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echo " Network: $network_status"
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echo ""
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echo "Recommendations:"
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local recommendations=$(jq -r '.recommendations[]' "$HEALTH_LOG" 2>/dev/null)
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if [[ -n "$recommendations" ]]; then
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echo "$recommendations" | sed 's/^/ - /'
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else
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echo " - No immediate actions required"
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fi
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echo ""
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echo "Full report: $HEALTH_LOG"
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# Clean old logs (keep last 20)
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find "$HEALTH_LOG_DIR" -name "health-*.json" | sort -r | tail -n +21 | xargs rm -f 2>/dev/null || true
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}
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# Function to run continuous monitoring
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run_monitoring() {
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echo -e "${BLUE}Starting continuous health monitoring...${NC}"
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echo "Press Ctrl+C to stop"
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while true; do
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clear
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display_dashboard
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echo ""
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echo "$(date) - Next check in 30 seconds..."
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sleep 30
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done
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}
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# Main execution
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case "${1:-dashboard}" in
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"dashboard"|"-d"|"--dashboard")
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display_dashboard
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;;
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"monitor"|"-m"|"--monitor")
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run_monitoring
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;;
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"json"|"-j"|"--json")
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assess_overall_health >/dev/null
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cat "$HEALTH_LOG"
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;;
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"quiet"|"-q"|"--quiet")
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assess_overall_health
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;;
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*)
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echo "Usage: $0 [dashboard|monitor|json|quiet]"
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echo " dashboard (default): Show health dashboard"
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echo " monitor: Continuous monitoring mode"
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echo " json: Output raw JSON report"
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echo " quiet: Just return overall status"
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exit 1
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;;
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esac
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