Linux Shell 脚本实现 Nginx 日志切割

试验环境：

# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.3 (Tikanga)

# /opt/nginx/nginx -v
nginx version: nginx/1.6.2

代码：

#!/bin/bash
# ==============================================================================
# chmod u+x /opt/nginx/cut_nginx_log.sh
# crontab -e
# 0 0 * * * /opt/nginx/cut_nginx_log.sh > /opt/nginx/logs/cut_nginx_log.log 2>&1
# ==============================================================================

LOGS_PATH="/opt/nginx/logs"
ARCHIVE_YEAR=$(date -d "yesterday" "+%Y")
ARCHIVE_MONTH=$(date -d "yesterday" "+%m")
ARCHIVE_DATE=$(date -d "yesterday" "+%Y%m%d_%H%M%S")
if [ -r /opt/nginx/nginx.pid ]; then
    mkdir -p "${LOGS_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}"
    mv "${LOGS_PATH}/access.log" "${LOGS_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}/access_${ARCHIVE_DATE}.log"
    kill -USR1 $(cat "/opt/nginx/nginx.pid")
    sleep 1
    gzip "${LOGS_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}/access_${ARCHIVE_DATE}.log"
else
    echo "Nginx might be down"
fi

# ==============================================================================
# Clean up log files older than 100 days
# ==============================================================================

# Change HOUSEKEEPING=1 to enable clean up
HOUSEKEEPING=0
KEEP_DAYS=100
if [ $HOUSEKEEPING == 1 ]; then
    if [ -d "${LOGS_PATH}" ]; then
        find "${LOGS_PATH}" -type f -name "access_*.log.gz" -mtime +${KEEP_DAYS} -exec rm -f {} \;
    fi
fi

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