Replace with B2 archive contents

scripts/kill-orphan-claude.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+# Kill orphaned Claude processes (no TTY or parent is init)
+# An orphaned Claude process is one where:
+#   - TTY is "?" (no terminal attached), OR
+#   - Parent PID is 1 (adopted by init)
+
+LOG_TAG="orphan-claude-killer"
+
+# Find all claude processes
+CLAUDE_PIDS=$(pgrep -x claude 2>/dev/null)
+
+if [ -z "$CLAUDE_PIDS" ]; then
+    exit 0
+fi
+
+for PID in $CLAUDE_PIDS; do
+    # Get TTY and PPID for this process
+    PROC_INFO=$(ps -o tty=,ppid= -p "$PID" 2>/dev/null)
+
+    if [ -z "$PROC_INFO" ]; then
+        # Process already gone
+        continue
+    fi
+
+    PROC_TTY=$(echo "$PROC_INFO" | awk '{print $1}')
+    PARENT_PID=$(echo "$PROC_INFO" | awk '{print $2}')
+
+    ORPHANED=false
+    REASON=""
+
+    # Check if TTY is "?" (no terminal)
+    if [ "$PROC_TTY" = "?" ]; then
+        ORPHANED=true
+        REASON="no TTY attached"
+    fi
+
+    # Check if parent PID is 1 (adopted by init)
+    if [ "$PARENT_PID" = "1" ]; then
+        ORPHANED=true
+        REASON="parent is init (PPID=1)"
+    fi
+
+    if [ "$ORPHANED" = true ]; then
+        # Get process start time for logging
+        START_TIME=$(ps -o lstart= -p "$PID" 2>/dev/null)
+        CPU=$(ps -o %cpu= -p "$PID" 2>/dev/null)
+        MEM=$(ps -o %mem= -p "$PID" 2>/dev/null)
+
+        logger "$LOG_TAG: Killing orphaned claude process PID=$PID ($REASON) started='$START_TIME' cpu=$CPU% mem=$MEM%"
+
+        # Kill the process tree (claude may have child processes)
+        pkill -9 -P "$PID" 2>/dev/null
+        kill -9 "$PID" 2>/dev/null
+    fi
+done

scripts/kill-top-cpu.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+# Kill the process tree using the most CPU (excluding critical ones)
+
+# Find the top CPU consumer (excluding protected and transient processes)
+TOP_LINE=$(ps -eo pid,comm,%cpu --sort=-%cpu | grep -v -E '(PID|systemd|sshd|monit|earlyoom|bash|ps|awk|grep|head)' | head -1)
+TARGET_PID=$(echo "$TOP_LINE" | awk '{print $1}')
+COMM=$(echo "$TOP_LINE" | awk '{print $2}')
+
+if [ -n "$TARGET_PID" ] && [ -n "$COMM" ]; then
+    logger "monit cpu-killer: Killing all '$COMM' processes (detected high CPU on PID $TARGET_PID)"
+    # Kill all processes with this command name
+    pkill -9 -x "$COMM"
+fi

scripts/status.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+# Status check for runaway process killer
+
+echo "============================================"
+echo "Runaway Process Killer - Status"
+echo "============================================"
+echo ""
+
+echo "=== Services ==="
+echo -n "earlyoom: "
+systemctl is-active earlyoom 2>/dev/null || echo "not running"
+
+echo -n "monit:    "
+systemctl is-active monit 2>/dev/null || echo "not running"
+
+echo ""
+echo "=== Current System Load ==="
+echo -n "CPU: "
+top -bn1 | grep "Cpu(s)" | awk '{print $2 "% user, " $4 "% system"}'
+
+echo -n "RAM: "
+free -h | awk '/Mem:/ {printf "%s used / %s total (%.1f%% used)\n", $3, $2, $3/$2*100}'
+
+echo -n "Swap: "
+free -h | awk '/Swap:/ {if ($2 != "0B") printf "%s used / %s total\n", $3, $2; else print "disabled"}'
+
+echo ""
+echo "=== Configuration ==="
+if [ -f /etc/monit/conf.d/cpu-killer ]; then
+    CYCLES=$(grep "for.*cycles" /etc/monit/conf.d/cpu-killer | grep -oP '\d+(?= cycles)')
+    echo "CPU threshold: ${CYCLES} minutes at 95%+"
+else
+    echo "CPU threshold: NOT CONFIGURED"
+fi
+
+if [ -f /etc/default/earlyoom ]; then
+    RAM_PCT=$(grep -oP '(?<=-m )\d+' /etc/default/earlyoom)
+    echo "RAM threshold: <${RAM_PCT}% free memory"
+else
+    echo "RAM threshold: NOT CONFIGURED"
+fi
+
+echo ""
+echo "=== Recent Kill Events ==="
+echo "CPU kills (last 24h):"
+journalctl --since "24 hours ago" 2>/dev/null | grep "cpu-killer" | tail -3 || echo "  None"
+
+echo ""
+echo "RAM kills (last 24h):"
+journalctl -u earlyoom --since "24 hours ago" 2>/dev/null | grep -E "SIGTERM|SIGKILL" | tail -3 || echo "  None"
+
+echo ""

scripts/test.sh

@@ -0,0 +1,105 @@
+#!/bin/bash
+# Test script for runaway process killer
+# WARNING: This will stress your system!
+
+set -e
+
+echo "============================================"
+echo "Runaway Process Killer - Test Suite"
+echo "============================================"
+echo ""
+echo "WARNING: This will temporarily stress your CPU and RAM!"
+echo ""
+
+if [ "$EUID" -ne 0 ]; then
+    echo "Error: Please run as root (sudo ./test.sh)"
+    exit 1
+fi
+
+# Check stress is installed
+if ! command -v stress &> /dev/null; then
+    echo "Installing stress tool..."
+    apt-get install -y -qq stress
+fi
+
+# Backup current config
+ORIG_CYCLES=$(grep "for.*cycles" /etc/monit/conf.d/cpu-killer | grep -oP '\d+(?= cycles)')
+echo "Current CPU threshold: ${ORIG_CYCLES} cycles"
+echo "Temporarily setting to 2 cycles for testing..."
+
+# Set to 2 cycles for testing
+sed -i "s/for ${ORIG_CYCLES} cycles/for 2 cycles/" /etc/monit/conf.d/cpu-killer
+monit reload
+sleep 2
+
+echo ""
+echo "=== TEST 1: CPU Protection ==="
+echo "Starting CPU stress (expect kill in ~2 minutes)..."
+echo ""
+
+stress --cpu 4 --timeout 300 &
+STRESS_PID=$!
+sleep 2
+
+START=$(date +%s)
+while kill -0 $STRESS_PID 2>/dev/null; do
+    sleep 5
+    NOW=$(date +%s)
+    ELAPSED=$((NOW - START))
+
+    if [ $ELAPSED -ge 180 ]; then
+        echo "FAILED: CPU stress not killed after 3 minutes"
+        kill $STRESS_PID 2>/dev/null || true
+        break
+    fi
+
+    if ! pgrep -x stress > /dev/null 2>&1; then
+        echo "PASSED: CPU stress killed after ${ELAPSED}s"
+        break
+    fi
+
+    [ $((ELAPSED % 30)) -eq 0 ] && echo "[${ELAPSED}s] Stress still running..."
+done
+
+sleep 2
+
+echo ""
+echo "=== TEST 2: RAM Protection ==="
+echo "Starting RAM stress (expect quick kill)..."
+echo ""
+
+stress --vm 4 --vm-bytes 4G --vm-keep --timeout 300 &
+STRESS_PID=$!
+sleep 2
+
+START=$(date +%s)
+while pgrep -x stress > /dev/null 2>&1; do
+    sleep 5
+    NOW=$(date +%s)
+    ELAPSED=$((NOW - START))
+
+    if [ $ELAPSED -ge 120 ]; then
+        echo "FAILED: RAM stress not killed after 2 minutes"
+        pkill stress 2>/dev/null || true
+        break
+    fi
+
+    if ! pgrep -x stress > /dev/null 2>&1; then
+        echo "PASSED: RAM stress killed after ${ELAPSED}s"
+        break
+    fi
+
+    MEM_FREE=$(free -m | awk '/Mem:/ {print $7}')
+    echo "[${ELAPSED}s] Stress running, ${MEM_FREE}MB free"
+done
+
+# Restore original config
+echo ""
+echo "Restoring original CPU threshold (${ORIG_CYCLES} cycles)..."
+sed -i "s/for 2 cycles/for ${ORIG_CYCLES} cycles/" /etc/monit/conf.d/cpu-killer
+monit reload
+
+echo ""
+echo "============================================"
+echo "Tests Complete"
+echo "============================================"