r8112013/logtail repository overview

FROM bash

COPY logtail.sh /usr/bin/logtail.sh
RUN chmod +x /usr/bin/logtail.sh

ENTRYPOINT ["/usr/bin/logtail.sh"]

#!/usr/bin/env bash

if [ $# -lt 1 ]; then
  echo "输入一个日志目录，用于监控此目录下的日志文件（目录结尾不要/）"
  exit 1
fi
# 获取/var/log目录下所有以.log结尾的文件名，并保存到数组中
logs=(${1}/*.log)

# 执行tail命令跟踪每个文件
for log in "${logs[@]}"
do
  tail -n+1 -F "$log" &
done

# 等待新的文件出现，并将新文件加入到tail命令中
while true
do
  new_logs=(${1}/*.log)
  for log in "${new_logs[@]}"
  do
    if [[ ! "${logs[@]}" =~ "${log}" ]]
    then
      tail -n+1 -F "$log" &
      logs+=("$log")
    fi
  done
  sleep 10
done