uwsgi 启动时就报错
一般能看到：— no python application found, check your startup logs for errors —，基本上是配置出错了，无法正常启动 uwsgi。
有用日志信息(每次启动 uwsgi 的时候就会有启动的日志产生，如果出错了就在这块找找)：
*** Operational MODE: preforking ***
failed to open python file /root/yzq/djangos/testdata/Testdata/wsgi.py
unable to load app 0 (mountpoint=”) (callable not found or import error)
它说 /root/yzq/djangos/testdata/Testdata/wsgi.py 这个路径打开失败，我这里是路径写错了，少写了一级。
*** Operational MODE: preforking ***
failed to open python file /root/yzq/djangos/testdata/Testdata/wsgi.py
unable to load app 0 (mountpoint=”) (callable not found or import error)
*** no app loaded. going in full dynamic mode ***
uWSGI running as root, you can use –uid/–gid/–chroot options
*** WARNING: you are running uWSGI as root !!! (use the –uid flag) ***
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 25141)
spawned uWSGI worker 1 (pid: 25142, cores: 1)
spawned uWSGI worker 2 (pid: 25143, cores: 1)
*** Stats server enabled on 127.0.0.1:9193 fd: 11 ***
…brutally killing workers…
worker 1 buried after 1 seconds
worker 2 buried after 1 seconds
binary reloading uWSGI…
chdir() to /root/yzq/configs
closing all non-uwsgi socket fds > 2 (max_fd = 100001)…
found fd 3 mapped to socket 0 (127.0.0.1:9092)
running /root/.virtualenvs/blog/bin/uwsgi
[uWSGI] getting INI configuration from /root/yzq/configs/testdata_uwsgi.ini
*** Starting uWSGI 2.0.17 (64bit) on [Fri Feb 15 21:31:14 2019] ***
compiled with version: 4.8.5 20150623 (Red Hat 4.8.5-16) on 04 April 2018 04:11:16
os: Linux-3.10.0-514.26.2.el7.x86_64 #1 SMP Tue Jul 4 15:04:05 UTC 2017
nodename: VM_2_29_centos
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /root/yzq/configs
detected binary path: /root/.virtualenvs/blog/bin/uwsgi
uWSGI running as root, you can use –uid/–gid/–chroot options
*** WARNING: you are running uWSGI as root !!! (use the –uid flag) ***
chdir() to /root/yzq/djangos/testdata
your processes number limit is 7283
your memory page size is 4096 bytes
detected max file descriptor number: 100001