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Type uWSGI; Press Enter; What Happens?
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Philip James
August 14, 2017
Technology
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Type uWSGI; Press Enter; What Happens?
Talk given at DjangoCon US 2017
Philip James
August 14, 2017
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Transcript
#typeuwsgi Type uWSGI; Press Enter; What Happens? Philip James —
@phildini DjangoCon US 2017
#typeuwsgi uWSGI…?
#typeuwsgi
#typeuwsgi • How does uWSGI handle processes? • How does
uWSGI handle networking? • Why use uWSGI?
#typeuwsgi
#typeuwsgi pythonista@conf:~ $ python Python 3.5.2 (default, Oct 11 2016,
05:05:28) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>>
#typeuwsgi python pid: 1222 argv = [‘python’] 0: [terminal] 1:
[terminal] 2: [terminal] bash pid: 1221
#typeuwsgi • How does uWSGI handle processes? • How does
uWSGI handle networking? • Why use uWSGI?
#typeuwsgi Catserve: Cats as a Service https://github.com/phildini/catserve
#typeuwsgi
#typeuwsgi me@conf:~ $ uwsgi --master --http :8000 --module catserve.wsgi -p
2 *** Starting uWSGI 2.0.15 (64bit) on [Thu May 11 10:09:35 2017] *** . . . uWSGI http bound on :8000 fd 4 spawned uWSGI http 1 (pid: 1220) uwsgi socket 0 bound to TCP address 127.0.0.1:52891 (port auto-assigned) fd 3 Python version: 3.5.2 (default, Oct 11 2016, 05:05:28) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] . . . spawned uWSGI worker 1 (and the only) (pid: 1221, cores: 1) Processes
#typeuwsgi *** Starting uWSGI 2.0.15 (64bit) on [Thu May 11
10:09:35 2017] *** . . . uWSGI http bound on :8000 fd 4 spawned uWSGI http 1 (pid: 1220) uwsgi socket 0 bound to TCP address 127.0.0.1:52891 (port auto-assigned) fd 3 Python version: 3.5.2 (default, Oct 11 2016, 05:05:28) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] . . . spawned uWSGI worker 1 (and the only) (pid: 1221, cores: 1) Processes me@conf:~ $ uwsgi --master --http :8000 --module catserve.wsgi -p 2
#typeuwsgi uwsgi pid: 1220 python pid: 1221
#typeuwsgi
#typeuwsgi *** Starting uWSGI 2.0.15 (64bit) on [Thu May 11
10:09:35 2017] *** . . . uWSGI http bound on :8000 fd 4 spawned uWSGI http 1 (pid: 1220) uwsgi socket 0 bound to TCP address 127.0.0.1:52891 (port auto-assigned) fd 3 Python version: 3.5.2 (default, Oct 11 2016, 05:05:28) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] . . . spawned uWSGI worker 1 (pid: 1221, cores: 1) spawned uWSGI worker 2 (pid: 1222, cores: 1) Processes me@conf:~ $ uwsgi --master --http :8000 --module catserve.wsgi -p 2
#typeuwsgi
#typeuwsgi uwsgi pid: 1220 python pid: 1221 python pid: 1222
#typeuwsgi • How does uWSGI handle processes? • How does
uWSGI handle networking? • Why use uWSGI?
#typeuwsgi Networking *** Starting uWSGI 2.0.15 (64bit) on [Thu May
11 10:09:35 2017] *** . . . uWSGI http bound on :8000 fd 4 spawned uWSGI http 1 (pid: 1220) uwsgi socket 0 bound to TCP address 127.0.0.1:52891 (port auto-assigned) fd 3 Python version: 3.5.2 (default, Oct 11 2016, 05:05:28) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] . . . spawned uWSGI worker 1 (pid: 1221, cores: 1) spawned uWSGI worker 2 (pid: 1222, cores: 1) me@conf:~ $ uwsgi --master --http :8000 --module catserve.wsgi -p 2
#typeuwsgi 22 sshd 8000 uwsgi Kernel Userland syscall syscall
#typeuwsgi uwsgi Kernel 8000
#typeuwsgi uwsgi Kernel socket() 8000
#typeuwsgi uwsgi Kernel 4 -> socket:[…] 8000
#typeuwsgi uwsgi Kernel 4 -> socket:[…] bind() 8000
#typeuwsgi uwsgi Kernel 4 -> socket:[…] bind() 8000
#typeuwsgi uwsgi Kernel 4 -> socket:[…] listen() 8000
#typeuwsgi uwsgi Kernel 4 -> socket:[…] 8000 python python 4
-> socket:[…] 4 -> socket:[…]
#typeuwsgi uwsgi Kernel 4 -> socket:[…] 8000 python python 4
-> socket:[…] 4 -> socket:[…] epoll_wait() epoll_wait()
#typeuwsgi uwsgi Kernel 4 -> socket:[…] 8000 python python 4
-> socket:[…] 4 -> socket:[…] accept() epoll_wait() 5 -> socket:[…] epoll_wait() accept()
#typeuwsgi • How does uWSGI handle processes? • How does
uWSGI handle networking? • Why use uWSGI?
#typeuwsgi Code Reloading uwsgi pid: 1220 python pid: 1221 python
pid: 1222 sighup sighup 4 -> socket:[…]
#typeuwsgi Tunability uwsgi pid: 1220 python pid: 1221 python pid:
1222 me@conf:~ $ uwsgi --master --http :8000 --module catserve.wsgi -p 2
#typeuwsgi Security GET / HTTP/1.1 Host: catserve.io GET / HTTP/1.1
Host: catserve.io Host: catserve.biz "[runserver] has not gone through security audits… and that’s how it’s gonna stay.”
#typeuwsgi Config Files [uwsgi] master = 1 http = 8000
module = catserve.wsgi processes = 2 me@conf:~ $ uwsgi --master --http :8000 --module catserve.wsgi -p 2
#typeuwsgi Features • Static file serving • Max requests per
worker • Queuing systems • HTTPS support, HTTP2 support • Harakiri • uwsgitop • memory-report • async
#typeuwsgi Why uWSGI? • Code Reloading • Tunability • Security
• Config Files • Features
#typeuwsgi • How does uWSGI handle processes? • How does
uWSGI handle networking? • Why use uWSGI? Thanks! @unbit Questions? Consulting! Philip James @phildini
[email protected]