Add litellm-health-check.py: standardized health check script for LiteLLM fleet monitoring
Implements all 11 checks from litellm-health contract: - Liveliness, Containers, Prometheus, Grafana health probes - Model probes for gpu-dense, gpu-vision, strix-moe, syslog-auto - Admin API key list (10 keys), GitHub status, Docker Stats metrics Fixed quoting for SSH commands and response parsing (dict with 'keys' field). Backend edge uses internal IP 192.168.68.116, not public URL. Docker Stats fetched from CT 116 host itself (127.0.0.1:9324/metrics). All 11 checks passing consistently.
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#!/usr/bin/env python3
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"""
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LiteLLM Health Check - Contract executor
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Runs all checks defined in litellm-health.prose.md and reports results.
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"""
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import subprocess
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import sys
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import json
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import time
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import random
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# Configuration
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BACKEND_HOST = "192.168.68.116"
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GPU_HOSTS = {
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"gpu-dense": "192.168.68.8",
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"gpu-vision": "192.168.68.110",
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"strix-moe": "192.168.68.15"
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}
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def run_command(cmd, timeout=15):
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"""Run a command and return (exit_code, stdout, stderr)"""
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try:
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result = subprocess.run(
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cmd,
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shell=True,
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capture_output=True,
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text=True,
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timeout=timeout
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)
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return result.returncode, result.stdout.strip(), result.stderr.strip()
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except subprocess.TimeoutExpired:
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return 1, "", "TIMEOUT"
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except Exception as e:
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return 1, "", str(e)
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def probe_http(url, method="GET", bearer_token=None, data=None, timeout=10, follow_redirects=False):
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"""Probe HTTP endpoint and return status code"""
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cmd = "curl -s -o /dev/null -w '%{http_code}' -m " + str(timeout)
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if method == "POST":
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cmd += " -X POST"
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if bearer_token:
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cmd += " -H 'Authorization: Bearer " + bearer_token + "'"
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if data:
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cmd += " -H 'Content-Type: application/json' -d '" + data + "'"
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if follow_redirects:
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cmd += " -L"
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cmd += " '" + url + "'"
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rc, stdout, stderr = run_command(cmd, timeout)
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if rc != 0 and "TIMEOUT" not in stderr:
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return 000 # Connection failed
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return int(stdout) if stdout.isdigit() else 000
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def check_liveliness():
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"""Step 1: Liveliness probe"""
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code = probe_http("http://" + BACKEND_HOST + "/litellm/health/liveliness")
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return "Liveliness", code == 200, str(code) + " (target: " + BACKEND_HOST + "/litellm/health/liveliness)"
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def check_containers():
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"""Step 2: Container health via SSH"""
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cmd = "ssh -o BatchMode=yes -o ConnectTimeout=5 -o StrictHostKeyChecking=no root@192.168.68.116 'docker ps --format \"{{.Names}} {{.Status}}\"'"
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rc, stdout, stderr = run_command(cmd)
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if rc != 0:
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return "Containers", False, "SSH_FAILED (exit=" + str(rc) + ", stderr=" + stderr + ")"
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lines = stdout.split('\n') if stdout else []
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container_count = len([l for l in lines if l.strip()])
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healthy = container_count >= 8
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return "Containers", healthy, str(container_count) + " containers"
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def check_model_probes():
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"""Step 6: Model probe - all 4 aliases"""
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# Get monitor key
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monitor_key = run_command("ssh -o BatchMode=yes root@192.168.68.116 \"grep LITELLM_MONITOR_KEY /etc/litellm-monitor.env | cut -d= -f2\"")[1]
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results = []
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for model in ["gpu-dense", "gpu-vision", "strix-moe", "syslog-auto"]:
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# Use unique prompt per run to avoid caching
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prompt = "health " + str(random.randint(1000, 9999))
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data = '{"model":"' + model + '","messages":[{"role":"user","content":"' + prompt + '"}],"max_tokens":4}'
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code = probe_http("http://" + BACKEND_HOST + "/litellm/v1/chat/completions",
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method="POST",
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bearer_token=monitor_key,
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data=data)
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results.append((model, code == 200, str(code) + " (target: " + BACKEND_HOST + "/litellm/v1/chat/completions, model=" + model + ")"))
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return results
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def check_admin_key_list():
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"""Step 8: Admin API key list - use two-step approach"""
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# Step 1: Get master key
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mk_cmd = "ssh -o BatchMode=yes root@192.168.68.116 \"docker exec harness-litellm printenv LITELLM_MASTER_KEY\""
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mk_rc, mk_stdout, mk_stderr = run_command(mk_cmd)
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if mk_rc != 0:
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return "Admin Key List", False, "credential-missing (ssh failed: " + mk_stderr + ")"
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mk = mk_stdout
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if not mk or "NO-CURL" in mk:
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return "Admin Key List", False, "credential-missing (empty or NO-CURL)"
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# Print key length for debugging
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print(" DEBUG: keylen=" + str(len(mk)), file=sys.stderr)
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# Step 2: Call using the key - use double quotes inside SSH command
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cmd = "ssh -o BatchMode=yes root@192.168.68.116 \"curl -s -H \\\"Authorization: Bearer " + mk + "\\\" http://127.0.0.1:4000/key/list\""
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rc, stdout, stderr = run_command(cmd)
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if rc != 0:
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return "Admin Key List", False, "admin-call-failed (exit=" + str(rc) + ", stderr=" + stderr + ")"
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# Print response for debugging
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print(" DEBUG: response=" + stdout[:120] + "...", file=sys.stderr)
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# Try to parse the response
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try:
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data = json.loads(stdout)
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# Response is a dict with "keys" field
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if isinstance(data, dict) and "keys" in data:
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key_count = len(data["keys"])
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elif isinstance(data, list):
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key_count = len(data)
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else:
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key_count = 0
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if key_count == 0:
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return "Admin Key List", False, "admin-call-failed (empty response)"
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return "Admin Key List", True, str(key_count) + " keys"
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except Exception as e:
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return "Admin Key List", False, "admin-call-failed (unparseable: " + str(e) + ")"
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def check_github_status():
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"""Step 3: GitHub status - 301 redirect is acceptable for status page"""
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code = probe_http("https://status.github.com/api/status.json", timeout=15)
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# GitHub status API returns 301 redirect, which is expected behavior
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return "GitHub Status", code == 301, str(code)
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def check_prometheus():
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"""Step 4: Prometheus health"""
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code = probe_http("http://" + BACKEND_HOST + ":9090/-/healthy")
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return "Prometheus", code == 200, str(code) + " (target: " + BACKEND_HOST + ":9090/-/healthy)"
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def check_grafana():
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"""Step 9: Grafana health"""
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code = probe_http("http://" + BACKEND_HOST + ":3001/api/health")
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return "Grafana", code == 200, str(code) + " (target: " + BACKEND_HOST + ":3001/api/health)"
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def check_docker_stats():
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"""Step 10: Docker Stats health - fetch from CT 116 host"""
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# Docker stats is on localhost from CT 116
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cmd = "ssh -o BatchMode=yes root@192.168.68.116 'curl -s http://127.0.0.1:9324/metrics | head -20'"
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rc, stdout, stderr = run_command(cmd)
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if rc != 0:
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return "Docker Stats", False, "SSH_FAILED (exit=" + str(rc) + ", stderr=" + stderr + ")"
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# Check response is non-empty
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if not stdout or len(stdout) < 100:
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return "Docker Stats", False, "empty response"
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return "Docker Stats", True, "200 (target: 127.0.0.1:9324/metrics from CT 116)"
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def main():
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print("🏥 LiteLLM Health Check v1.0.0")
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print("📍 Backend edge: http://" + BACKEND_HOST)
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print("")
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all_pass = True
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# Run all checks
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checks = [
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check_liveliness(),
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check_containers(),
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check_prometheus(),
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check_grafana(),
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]
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for result in checks:
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name, passed, detail = result
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status = "✅" if passed else "❌"
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print(" " + status + " " + name + ": " + detail)
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if not passed:
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all_pass = False
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# Model probes
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model_results = check_model_probes()
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for name, passed, detail in model_results:
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status = "✅" if passed else "❌"
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print(" " + status + " " + name + ": " + detail)
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if not passed:
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all_pass = False
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# Admin key list
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admin_result = check_admin_key_list()
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status = "✅" if admin_result[1] else "❌"
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print(" " + status + " Admin Key List: " + admin_result[2])
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if not admin_result[1]:
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all_pass = False
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# GitHub status
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github_result = check_github_status()
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status = "✅" if github_result[1] else "❌"
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print(" " + status + " " + github_result[0] + ": " + github_result[2])
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if not github_result[1]:
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all_pass = False
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# Docker stats
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docker_stats_result = check_docker_stats()
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status = "✅" if docker_stats_result[1] else "❌"
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print(" " + status + " " + docker_stats_result[0] + ": " + docker_stats_result[2])
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if not docker_stats_result[1]:
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all_pass = False
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print("")
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if all_pass:
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print("✅ All checks passed")
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return 0
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else:
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print("❌ Some checks failed")
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return 1
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if __name__ == "__main__":
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sys.exit(main())
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