Log Rotation Setup
Creates and configures log rotation rules for custom applications.
Published: April 20, 2024
Detailed Information
This script creates and configures log rotation rules for custom applications. Log rotation prevents log files from growing too large and preserves disk space.
What Does This Script Do?
This script automates log rotation configuration:
- Creates log rotation rule
- Sets rotation frequency (daily/weekly/monthly)
- Sets number of rotations to keep
- Configures compression settings
- Adds service reload command
Why Should You Use It?
Log rotation is critical for disk management:
- Disk Savings: Automatically cleans old logs
- Performance: Prevents large log files
- Organization: Keeps log files organized
How to Use
Step-by-Step Usage Guide
1. Run Script
sudo chmod +x logrotate_setup.sh
sudo ./logrotate_setup.sh2. Answer Questions
The script will ask you:
- Application name
- Log file path
- Rotation frequency (daily/weekly/monthly)
- Number of rotations to keep
3. Test Configuration
sudo logrotate -d /etc/logrotate.d/Requirements
Requirements
- Root Privileges: Script must be run as root
- logrotate: Usually installed by default
Use Cases
Use Cases
1. Custom Application Logs
Configure log rotation for your custom applications.
2. Disk Management
Keep log file disk space under control.
Examples
Usage Examples
Example 1: Basic Usage
sudo ./logrotate_setup.sh
# App name: myapp
# Log path: /var/log/myapp/app.log
# Frequency: daily
# Keep: 7Code
#!/bin/bash
# Log Rotation Configuration Script
if [ "$EUID" -ne 0 ]; then
echo "Please run as root"
exit 1
fi
read -p "Enter application name: " APP_NAME
read -p "Enter log file path: " LOG_PATH
read -p "Rotation frequency (daily/weekly/monthly) [daily]: " FREQUENCY
FREQUENCY=${FREQUENCY:-daily}
read -p "Keep how many rotations [7]: " KEEP
KEEP=${KEEP:-7}
cat > "/etc/logrotate.d/$APP_NAME" << EOF
$LOG_PATH {
$FREQUENCY
rotate $KEEP
compress
delaycompress
missingok
notifempty
create 0644 www-data www-data
sharedscripts
postrotate
systemctl reload $APP_NAME > /dev/null 2>&1 || true
endscript
}
EOF
echo "✓ Log rotation configured for $APP_NAME"
echo ""
echo "Config file: /etc/logrotate.d/$APP_NAME"
echo ""
echo "Test configuration:"
echo "logrotate -d /etc/logrotate.d/$APP_NAME"
echo ""
echo "Force rotation:"
echo "logrotate -f /etc/logrotate.d/$APP_NAME"Usage
sudo chmod +x logrotate_setup.sh
sudo ./logrotate_setup.sh
# Test configuration
sudo logrotate -d /etc/logrotate.d/<app_name>Troubleshooting
Troubleshooting
Problem: Log rotation not working
Solution: Test configuration:
sudo logrotate -d /etc/logrotate.d/