ELK Stack Configurations for System Monitoring
The ELK Stack (Elasticsearch, Logstash, Kibana) is a powerful and popular toolset for system monitoring and logging. In this article, we will explore 17 different ELK Stack configurations that can be used to monitor various aspects of your systems.
1. Basic System Monitoring
- Purpose: Monitor basic system metrics such as CPU usage, memory usage, disk space, and network traffic.
- Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
-
Configuration:
“`bash
Configure Logstash to collect system metrics
input {
cpu {}
memory {}
disk {}
network {}
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
2. Web Server Monitoring
- Purpose: Monitor web server activity, including request and response data.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect web server logs
input {
file { path => “/var/log/apache2/access.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
3. Database Monitoring
- Purpose: Monitor database activity, including queries and performance metrics.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect database logs
input {
file { path => “/var/log/mysql/mysqld.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
4. Network Monitoring
- Purpose: Monitor network activity, including traffic and protocol data.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect network logs
input {
sflow { host => “localhost” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
5. Serverless Function Monitoring
- Purpose: Monitor serverless function activity, including executions and errors.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect serverless logs
input {
file { path => “/var/log/aws/lambda.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
6. Container Monitoring
- Purpose: Monitor container activity, including CPU usage and memory data.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect container metrics
input {
docker {}
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
7. Cloud Provider Monitoring
- Purpose: Monitor cloud provider activity, including resource usage and costs.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect cloud provider logs
input {
file { path => “/var/log/aws/cloudwatch.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
8. Security Monitoring
- Purpose: Monitor security-related events, including login attempts and policy breaches.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect security logs
input {
file { path => “/var/log/auth.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
9. Application Monitoring
- Purpose: Monitor application activity, including user interactions and performance metrics.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect application logs
input {
file { path => “/var/log/app.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
10. API Monitoring
- Purpose: Monitor API activity, including requests and responses.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect API logs
input {
file { path => “/var/log/api.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
11. Email Monitoring
- Purpose: Monitor email activity, including sent and received emails.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect email logs
input {
file { path => “/var/log/mail.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
12. DNS Monitoring
- Purpose: Monitor DNS activity, including queries and responses.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect DNS logs
input {
file { path => “/var/log/named.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
13. SSH Monitoring
- Purpose: Monitor SSH activity, including login attempts and connections.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect SSH logs
input {
file { path => “/var/log/secure.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
14. FTP Monitoring
- Purpose: Monitor FTP activity, including login attempts and file transfers.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect FTP logs
input {
file { path => “/var/log/ftp.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
15. SNMP Monitoring
- Purpose: Monitor SNMP activity, including traps and queries.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect SNMP logs
input {
snmp { host => “localhost” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
16. RDP Monitoring
- Purpose: Monitor RDP activity, including login attempts and connections.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect RDP logs
input {
file { path => “/var/log/rdp.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
17. ICMP Monitoring
- Purpose: Monitor ICMP activity, including ping requests and responses.
-
Components:
- Elasticsearch for data storage and retrieval
- Logstash for log collection and processing
- Kibana for visualization and analysis
- Configuration:
“`bash
Configure Logstash to collect ICMP logs
input {
file { path => “/var/log/icmp.log” }
}output {
elasticsearch { hosts => [“localhost:9200”] }
}
“`
In each of the above configurations, you would replace localhost with your actual IP address or hostname. Also, make sure to adjust the log file paths according to your system’s configuration.
These examples demonstrate how to collect logs from various systems and protocols using Logstash and forward them to Elasticsearch for storage and analysis.
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