Graylog Down? Real-Time Status & Outage Checker (2026)

Graylog is an open-source centralized log management platform trusted by thousands of security and operations teams. With 7K+ GitHub stars and used by enterprises including Cisco, SAP, and eBay, Graylog ingests logs via GELF, Syslog, and Beats — providing real-time search, alerting, and dashboards backed by Elasticsearch/OpenSearch. Graylog Cloud offers a fully managed service. When Graylog goes down, security teams lose log visibility and compliance pipelines break.

This page provides real-time Graylog status monitoring, historical uptime data, and instant outage alerts.

Current Graylog Status

Check live Graylog status now: ezmon.com/status/graylog

Our monitoring probes Graylog infrastructure every 60 seconds from multiple geographic regions:

• Graylog Cloud Console — Web UI at app.graylog.cloud
• Graylog REST API — Management and search API (port 9000)
• GELF HTTP Input — Log ingestion via GELF HTTP (port 12201)
• Syslog UDP Input — Syslog ingestion (port 514)
• Elasticsearch/OpenSearch Backend — Index storage layer

Graylog Live Monitoring Dashboard

SERVICE              STATUS    UPTIME (30d)  LAST CHECK
──────────────────────────────────────────────────────
Graylog Cloud UI     ✅ UP     99.6%         30s ago
REST API (9000)      ✅ UP     99.7%         30s ago
GELF HTTP (12201)    ✅ UP     99.7%         30s ago
Syslog Input (514)   ✅ UP     99.8%         30s ago
ES/OS Backend        ✅ UP     99.8%         30s ago
──────────────────────────────────────────────────────
Multi-region checks: US-East, EU-West, AP-Southeast

Status updates every 60 seconds. Subscribe for instant alerts.

How to Check if Graylog Is Down

Quick Diagnosis Steps

1. Check ezmon.com — Multi-region probes distinguish Graylog from Elasticsearch failures
2. Test REST API — curl http://localhost:9000/api/system/lbstatus
3. Check cluster status — curl http://localhost:9000/api/system/cluster/nodes
4. Test GELF ingestion — Send a test GELF message via HTTP
5. Graylog Community Forum — community.graylog.org for real-time reports

Graylog API Health Checks

# Check load balancer health endpoint
curl -s http://localhost:9000/api/system/lbstatus

# Check cluster node status (requires auth)
GRAYLOG_CREDS="admin:admin"
curl -s -u $GRAYLOG_CREDS http://localhost:9000/api/system/cluster/nodes | \
  jq '.nodes[] | {node_id, transport_address, is_master}'

# Check indexer cluster health
curl -s -u $GRAYLOG_CREDS http://localhost:9000/api/system/indexer/cluster/health | jq .

# Check input status
curl -s -u $GRAYLOG_CREDS http://localhost:9000/api/system/inputs | \
  jq '.inputs[] | {title, type, state}'

# Check journal health (message buffer)
curl -s -u $GRAYLOG_CREDS http://localhost:9000/api/system/journal | \
  jq '{journal_size_limit: .journal_size_limit, uncommitted_journal_entries: .uncommitted_journal_entries}'

# Send a test GELF message
curl -s -X POST http://localhost:12201/gelf \
  -H "Content-Type: application/json" \
  -d '{"version":"1.1","host":"health-check","short_message":"ezmon probe","level":1}'

Graylog Python Health Check

import requests
import json
import os

def check_graylog_status(base_url="http://localhost:9000"):
    """Check Graylog API and ingestion health."""
    user = os.environ.get("GRAYLOG_USER", "admin")
    password = os.environ.get("GRAYLOG_PASSWORD", "admin")
    auth = (user, password)
    
    # Load balancer status (no auth needed)
    try:
        resp = requests.get(f"{base_url}/api/system/lbstatus", timeout=5)
        print(f"LB status: {resp.text.strip()}")
    except requests.ConnectionError as e:
        print(f"Graylog unreachable: {e}")
        return
    
    # Cluster nodes
    try:
        resp = requests.get(
            f"{base_url}/api/system/cluster/nodes",
            auth=auth, timeout=10,
            headers={"X-Requested-By": "ezmon-health"}
        )
        nodes = resp.json().get("nodes", [])
        print(f"Cluster nodes: {len(nodes)}")
    except Exception as e:
        print(f"Cluster check failed: {e}")
    
    # Indexer health
    try:
        resp = requests.get(
            f"{base_url}/api/system/indexer/cluster/health",
            auth=auth, timeout=10,
            headers={"X-Requested-By": "ezmon-health"}
        )
        health = resp.json()
        print(f"Indexer: {health.get('status', 'unknown')} — shards: {health.get('shards', {})}")
    except Exception as e:
        print(f"Indexer health check failed: {e}")
    
    # GELF HTTP ingestion test
    try:
        gelf = {
            "version": "1.1",
            "host": "ezmon-health-check",
            "short_message": "Health probe from ezmon.com",
            "level": 6,
            "_source": "ezmon"
        }
        resp = requests.post(
            f"{base_url.replace(':9000', ':12201')}/gelf",
            json=gelf, timeout=5
        )
        print(f"GELF ingest: {resp.status_code} — {'OK' if resp.ok else 'FAIL'}")
    except Exception as e:
        print(f"GELF ingest failed: {e}")
    
    print(f"Graylog [{base_url}]: HEALTHY")

check_graylog_status()

Common Graylog Issues and Fixes

High Journal Uncommitted Entries

# Check journal status
curl -s -u admin:admin http://localhost:9000/api/system/journal \
  -H "X-Requested-By: cli" | jq .

# Check if indexer is causing backlog
curl -s -u admin:admin http://localhost:9000/api/system/indexer/cluster/health \
  -H "X-Requested-By: cli" | jq '{status, number_of_pending_tasks}'

# Increase output batch size in graylog.conf:
# output_batch_size = 5000
# output_flush_interval = 1

# Check processing pipeline performance
curl -s -u admin:admin http://localhost:9000/api/system/metrics/namespace/org.graylog2.buffers \
  -H "X-Requested-By: cli" | jq .

Elasticsearch Index Rotation Issues

# Check index sets
curl -s -u admin:admin http://localhost:9000/api/system/indices/index_sets \
  -H "X-Requested-By: cli" | jq '.index_sets[] | {id, title, index_prefix}'

# Check index stats
curl -s -u admin:admin http://localhost:9000/api/system/indexer/indices/open \
  -H "X-Requested-By: cli" | jq '.all | length'

# Manually trigger index rotation
curl -s -X POST -u admin:admin \
  http://localhost:9000/api/system/deflector/cycle \
  -H "X-Requested-By: cli"

# Check for failed indices
curl -s http://localhost:9200/_cat/indices/graylog*?v | grep -v green

Graylog Architecture: What Can Go Down

Graylog Uptime History

Historical data sourced from ezmon.com Graylog monitoring.

Get Instant Graylog Outage Alerts

Never miss a Graylog outage again. ezmon.com monitors Graylog 24/7 with multi-region probes and sends instant alerts via:

• Email (with escalation policies)
• Slack and Microsoft Teams webhooks
• PagerDuty and Opsgenie integration
• SMS and phone call alerts
• Webhook for custom notification pipelines

Set up Graylog monitoring in 30 seconds: ezmon.com/monitor/graylog

This page is maintained by ezmon.com — independent uptime monitoring for developer infrastructure. Data is collected from our global probe network and updated in real time. We are not affiliated with Graylog Inc.