Python中Django + Gunicorn + Nginx部署下logging setLevel设置问题请教

有一个 django 项目，日志写入到文件，需求是可以动态修改 logging 的 level.

我写了一个 demo, 在请求中把每个 level 的 log 都打印一下，如果更改了 level, 那么后台打印就会看到。

demo 的前端界面如下：

有 5 个 gunicorn 进程:

我用 ab 命令测试了一下 ，后台打印的 log ，可以看到只有 PID：28763 的 loglevel 是 error ，其它的进程都还是默认的 debug level 。 也就是说设置 level 只对 一个进程生效，我想要的效果是对所有进程重新，大家能帮我找下原因吗，谢谢了。

系统 centos 7.4
Django: 1.11.8
nginx: 1.12
gunicorn: 19.7.1
meinheld: 0.6.1

django 的 log 配置部分:

LOGGING = {
‘version’: 1,
‘disable_existing_loggers’: False,
‘formatters’: {
‘verbose’: {
‘format’: ‘[%(process)d] [%(asctime)s] %(levelname)s [%(filename)s:%(lineno)s] %(message)s’
}
},
‘handlers’: {
‘file’: {
‘level’: ‘DEBUG’,
‘class’: ‘logging.handlers.RotatingFileHandler’,
‘maxBytes’: 1024*1024,
‘backupCount’: 5,
‘filename’: ‘/tmp/run.log’,
‘formatter’: ‘verbose’
},
‘console’: {
‘level’: ‘DEBUG’,
‘class’: ‘logging.StreamHandler’,
‘formatter’: ‘verbose’
}
},
‘loggers’: {
‘django_docker’: {
‘handlers’: [‘file’, ‘console’],
‘level’: ‘DEBUG’,
‘propagate’: True,
},
‘django.request’: {
‘handlers’: [‘file’],
‘level’: ‘ERROR’,
‘propagate’: False,
}
},
}

django 中打印 log 的代码:

logger = logging.getLogger('django_docker')
def index(request):
level_name = logging.getLevelName(logger.getEffectiveLevel())
logger.critical(’========= Start Logging ================’)
logger.debug(’\t\t==> Debug Log’)
logger.info(’\t\t==> Info Log’)
logger.warning(’\t==> Warning Log’)
logger.error(’\t\t==> Error Log’)
logger.critical(’\t==> Critical Log’)
logger.critical(’========= End Logging ================’)
if request.method == ‘POST’:
if ‘logLevel’ in request.POST and request.POST[‘logLevel’]:
level_name = request.POST[‘logLevel’].upper()
logger.critical(’====> %s <===’ % logger.root.name)
logger.root.setLevel(level_name)
logger.setLevel(level_name)
return redirect(‘index’)
return render(request, ‘main/index.html’, {‘log_level’: level_name})

gunicorn 配置

import multiprocessing
from logging.config import dictConfig
name = “django_docker”
bind = “unix:/var/run/django_docker.sock”
worker_class = “egg:meinheld#gunicorn_worker”
#workers = multiprocessing.cpu_count() * 2 + 1
workers = 4
reload = True
umask = 0002
user = ‘nginx’
group = ‘nginx’
accesslog = “/tmp/gunicorn.access.log”
errorlog = “/tmp/gunicorn.error.log”
raw_env = [“DJANGO_SETTINGS_MODULE=django_docker.settings”]
chdir = " /home/tiannpen/workspace/django_docker/"
pidfile = “/var/run/gunicorn.pid”
daemon = True
capture_output = True
logconfig_dict = {
‘version’:1,
‘disable_existing_loggers’: False,
‘loggers’:{
“root”: {“level”: “INFO”, “handlers”: [“console”]},
“gunicorn.error”: {
“level”: “INFO”,
“handlers”: [“error_file”],
“propagate”: 1,
“qualname”: “gunicorn.error”
},
    "gunicorn.access": {
        "level": "INFO",
        "handlers": ["access_file"],
        "propagate": 0,
        "qualname": "gunicorn.access"
    }
},
'handlers':{
    "console": {
        "class": "logging.StreamHandler",
        "formatter": "generic",
        "stream": "sys.stdout"
    },
    "error_file": {
        "class": "logging.FileHandler",
        "formatter": "generic",
        "filename": "/tmp/gunicorn.error.log"
    },
    "access_file": {
        "class": "logging.handlers.RotatingFileHandler",
        "maxBytes": 1024*1024,
        "backupCount": 5,
        "formatter": "generic",
        "filename": "/tmp/gunicorn.access.log",
    }
},
'formatters':{
    "generic": {
        "format": "%(asctime)s [%(process)d] [%(levelname)s] %(message)s",
        "datefmt": "[%Y-%m-%d %H:%M:%S %z]",
        "class": "logging.Formatter"
    },
    "access": {
        "format": "%(message)s",
        "class": "logging.Formatter"
    }
}
}