Troubleshooting

# Kiểm tra quyền
Get-Acl "C:\Program Files\BlackHole Agent" | Format-List

# Kiểm tra file tồn tại
Test-Path "C:\Program Files\BlackHole Agent\blackhole-agt.exe"

# Kiểm tra port
netstat -an | findstr :1883

# Chạy với quyền admin
Start-Process PowerShell -Verb RunAs

# Kiểm tra quyền
ls -la /opt/blackhole-agent/blackhole-agt

# Kiểm tra file tồn tại
test -f /opt/blackhole-agent/blackhole-agt

# Kiểm tra port
sudo netstat -tlnp | grep :1883

# Chạy với quyền root
sudo systemctl start blackhole-agent

# Kiểm tra cú pháp YAML
python -c "import yaml; yaml.safe_load(open('config.yml'))"

# Tạo cấu hình mới
blackhole-agt configure --path config-new.yml default

# So sánh với cấu hình mẫu
diff config.yml config-new.yml

# Test kết nối đến Registry
curl -k https://blackhole.glabs.one/health

# Test với verbose
curl -v -k https://blackhole.glabs.one/health

# Kiểm tra DNS
nslookup blackhole.glabs.one

# Test với telnet
telnet blackhole.glabs.one 443

# Test MQTT connection
mosquitto_pub -h blackhole.glabs.one -p 8883 -t "test" -m "hello" --cafile ca.crt

# Test với authentication
mosquitto_pub -h blackhole.glabs.one -p 8883 -t "test" -m "hello" -u "username" -P "password"

# Kiểm tra MQTT broker status
mosquitto_sub -h blackhole.glabs.one -p 8883 -t "#" -v

# Test Kafka connection
kafka-console-producer.sh --bootstrap-server kafka.company.com:9092 --topic test

# List topics
kafka-topics.sh --bootstrap-server kafka.company.com:9092 --list

# Test với SASL
kafka-console-producer.sh --bootstrap-server kafka.company.com:9092 --topic test --producer-property security.protocol=SASL_SSL --producer-property sasl.mechanism=PLAIN

# Kiểm tra collector status
grep "APM" /var/log/blackhole-agent/agent.log

# Kiểm tra system metrics
top -p $(pgrep blackhole-agt)

# Test system info access
cat /proc/meminfo
cat /proc/cpuinfo

# Kiểm tra file permissions
ls -la /var/log/auth.log

# Test file access
cat /var/log/auth.log

# Kiểm tra file watcher
grep "FileWatcher" /var/log/blackhole-agent/agent.log

# Test file rotation
mv /var/log/auth.log /var/log/auth.log.old
touch /var/log/auth.log

# Kiểm tra event log permissions
Get-EventLog -List

# Test event log access
Get-EventLog -LogName Application -Newest 5

# Kiểm tra event channels
Get-WinEvent -ListLog * | Where-Object {$_.LogName -like "*Application*"}

# Test specific event ID
Get-WinEvent -FilterHashtable @{LogName='Application'; ID=1000}

# Kiểm tra memory usage
ps -o pid,ppid,cmd,%mem,%cpu --sort=-%mem | grep blackhole

# Kiểm tra queue size
grep "queue_size" /var/log/blackhole-agent/agent.log

# Giảm queue size trong config
inventory:
  max_messages: 50000  # Giảm từ 100000
  max_bytes: 134217728  # Giảm từ 256MB

# Kiểm tra CPU usage
top -p $(pgrep blackhole-agt)

# Kiểm tra collection interval
grep "interval" /etc/blackhole-agent/config.yml

# Tăng interval
sources:
  apm_system:
    interval: 60  # Tăng từ 30 giây

# Kiểm tra queue backlog
grep "backlog" /var/log/blackhole-agent/agent.log

# Tăng batch size
sinks:
  mqtt_sink:
    rate_limit:
      batch_size: 1000  # Tăng từ 100
      batch_interval: 500  # Giảm từ 1000

# Re-authenticate
blackhole-agt auth --key "new-api-key"

# Kiểm tra certificate
openssl s_client -connect blackhole.glabs.one:8883 -servername blackhole.glabs.one

# Test proxy
curl --proxy http://proxy.company.com:8080 https://blackhole.glabs.one/health

# Kiểm tra permissions
ls -la /opt/blackhole-agent/
ls -la /etc/blackhole-agent/
ls -la /var/log/blackhole-agent/

# Cấp quyền
sudo chown -R blackhole-agent:blackhole-agent /opt/blackhole-agent
sudo chmod 750 /opt/blackhole-agent

# Chạy với debug logging
blackhole-agt start --verbose --log-level debug

# Windows
.\blackhole-agt.exe start --verbose --log-level debug

# Test Registry connection
curl -k https://blackhole.glabs.one/health

# Test MQTT connection
mosquitto_pub -h blackhole.glabs.one -p 8883 -t "test" -m "hello"

# Test Kafka connection
kafka-console-producer.sh --bootstrap-server kafka.company.com:9092 --topic test

# System info
uname -a
cat /etc/os-release

# Agent version
blackhole-agt --version

# Process info
ps aux | grep blackhole-agt

# Network info
netstat -tlnp | grep blackhole

# Lỗi kết nối
grep "connection" /var/log/blackhole-agent/agent.log

# Lỗi authentication
grep "auth" /var/log/blackhole-agent/agent.log

# Lỗi file access
grep "permission" /var/log/blackhole-agent/agent.log

# Performance issues
grep "slow" /var/log/blackhole-agent/agent.log