uwsgi 的 log 分割方法

1. 指定 touch-logreopen 文件

[uwsgi]
socket = 0.0.0.0:23288
processes = 4
threads = 1
master = true
pythonpath = /app/aiphoto/ai_photo
module = aiphoto
callable = app
env = AIPHOTO=Production
#env = AIPHOTO_SERVER_NAME=https://aiphoto.howfun.tv
env = AIPHOTO_APP=True
buffer-size = 32768
logto = /app/aiphoto/logs/uwsgi/aiphoto.log
pidfile = /app/aiphoto/logs/uwsgi/aiphoto_uwsgi.pid
#memory-report = true
gevent=512
gevent-monkey-patch=true
touch-logreopen = /app/aiphoto/logs/uwsgi/touchforlogrotate #对应的目录建立此文件，防止压缩过程中日志写入不成功

这里我们指定日志文件就在项目目录下叫 uwsgi.daemonize.log，监听项目目录下的 touchforlogrotate 文件，如果文件发生变化，就重新打开日志，再 touch 一下 touchforlogrotate，之前的文件便停止写入

2. 自动脚本

自动压缩脚本

# # -*- coding: utf8 -*-
"""
新建touchlog 防止压缩后日志出现中断的情况
"""
import os
import shutil
import glob
import time
import gzip
import argparse


def rotate_to_gz(source, limit=0):
    if os.path.exists(source):
        target = "%s.%s.gz" % (source, time.strftime("%Y-%m-%d_%H-%M-%S"))
        new_name = "{}_1".format(source)
        shutil.move(source,new_name)
        # cmd = "mv {} {}".format(source, new_name)
        # os.popen(cmd).readlines()

        #touchfile = "/data/ai_photo/logs/uwsgi/touchforlogrotate"  # 新建touchlog 防止压缩后日志出现中断的情况
        touchfile = args.touchforlogrotate # 新建touchlog 防止压缩后日志出现中断的情况
        touch_cmd = "touch {}".format(touchfile)

        os.popen(touch_cmd).readlines()
        with open(new_name, 'rb') as fin, gzip.open(target, 'wb') as fout:
            shutil.copyfileobj(fin, fout)

        # limit file number
        if limit > 0:
            rm_files = sorted(glob.glob(
                '%s.[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]' % source +
                '_[0-9][0-9]-[0-9][0-9]-[0-9][0-9].gz'))[:-limit]
            for f in rm_files:
                delete_file(f)


def delete_file(file):
    if os.path.exists(file):
        os.remove(file)


def main():
    # rotate_by_date = ["/data/ai_photo/logs/uwsgi/aiphoto.log"]
    rotate_by_date = [args.aiphoto_log_src]

    # rotate stdout and stderr by size
    for f in rotate_by_date:
        try:
            if os.path.exists(f):
                # file size > 1GB, backupCount=5
                rotate_to_gz(f, 7)
        except BaseException:
            print("rotate %s error", f)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="ai_photo log back")
    parser.add_argument('aiphoto_log_src')  # 日志路径
    parser.add_argument('touchforlogrotate')  # 新建touchlog 防止压缩后日志出现中断的情况
    args = parser.parse_args()

    main()

3. crontab 定时调用

#定时脚本命令推荐放到root用户下执行
00 00 * * * cd /app/aiphoto/ai_photo && python aiphoto/maintenances/rotate_logs.py /app/aiphoto/logs/uwsgi/aiphoto.log  /app/aiphoto/logs/uwsgi/touchforlogrotate >/tmp/rotate_logs.cron 2>&1

好了，重启 uwsgi，logs 文件夹下便会有每天的日志了。