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PARTNER CONTENT: As the technology industry continues its shift towards AI dominance, an important schism is opening up that threatens to impact scientific progress, along with important humanitarian endeavors such as disaster response. …
The Hidden Cost Of Compromise: Why HPC Still Demands Precision was written by Timothy Prickett Morgan at The Next Platform.
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Streamline Your Logs: Exploring Rsyslog for Effective System Log Management on Ubuntu
In the world of system administration, effective log management is crucial for troubleshooting, security monitoring, and ensuring system stability. Logs provide valuable insights into system activities, errors, and security incidents. Ubuntu, like most Linux distributions, relies on a logging mechanism to track system and application events.
One of the most powerful logging systems available on Ubuntu is Rsyslog. It extends the traditional syslog functionality with advanced features such as filtering, forwarding logs over networks, and log rotation. This article provides guide on managing system logs with Rsyslog on Ubuntu, covering installation, configuration, remote logging, troubleshooting, and advanced features.
Understanding Rsyslog What is Rsyslog?Rsyslog (Rocket-fast System for Log Processing) is an enhanced syslog daemon that allows for high-performance log processing, filtering, and forwarding. It is designed to handle massive volumes of logs efficiently and provides robust features such as:
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Multi-threaded log processing
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Log filtering based on various criteria
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Support for different log formats (e.g., JSON, CSV)
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Secure log transmission via TCP, UDP, and TLS
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Log forwarding to remote servers
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Writing logs to databases
Rsyslog is the default logging system in Ubuntu 20.04 LTS and later and is commonly used in enterprise environments.
Installing and Configuring Rsyslog Checking if Rsyslog is InstalledBefore installing Rsyslog, check if it is already installed and running with the following command:
systemctl status rsyslogIf the output shows active (running), then Rsyslog is installed. If not, you can install it using:
sudo apt update sudo apt install rsyslog -yOnce installed, enable and start the Rsyslog service:
sudo systemctl enable rsyslog sudo systemctl start rsyslogTo verify Rsyslog’s status, run:
systemctl status rsyslog Understanding Rsyslog Configuration Rsyslog Configuration FilesRsyslog’s primary configuration files are:
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/etc/rsyslog.conf – The main configuration file
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/etc/rsyslog.d/ – Directory for additional configuration files
Rsyslog uses a facility, severity, action model:
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