Impossible de lancer un serveur bottle.py à l'aide d'une instance EC2 Ubuntu Linux 12.04 avec une adresse IP publique. Le programme (hw.py) provient du tutoriel de la bouteille.EC2, connexion bottle.py
from bottle import route, run
@route('/hello')
def hello():
return 'hello world'
run(host='xxx.xxx.xxx.xxx', port=80)
Exécuter en tant:
> python hw.py
or
> sudo python hw.py
génère l'erreur:
Traceback (most recent call last):
File "hw.py", line 7, in <module>
run(host='xxx.xxx.xxx.xxx', port=80)
File "/usr/local/lib/python2.7/dist-packages/bottle.py", line 2700, in run
server.run(app)
File "/usr/local/lib/python2.7/dist-packages/bottle.py", line 2382, in run
srv = make_server(self.host, self.port, handler, **self.options)
File "/usr/lib/python2.7/wsgiref/simple_server.py", line 144, in make_server
server = server_class((host, port), handler_class)
File "/usr/lib/python2.7/SocketServer.py", line 408, in __init__
self.server_bind()
File "/usr/lib/python2.7/wsgiref/simple_server.py", line 48, in server_bind
HTTPServer.server_bind(self)
File "/usr/lib/python2.7/BaseHTTPServer.py", line 108, in server_bind
SocketServer.TCPServer.server_bind(self)
File "/usr/lib/python2.7/SocketServer.py", line 419, in server_bind
self.socket.bind(self.server_address)
File "/usr/lib/python2.7/socket.py", line 224, in meth
return getattr(self._sock,name)(*args)
socket.error: [Errno 99] Cannot assign requested address
L'adresse IP publique EC2 est rattaché à aucun autre processus. Le port 80 n'est pas connecté à un autre processus.
> sudo netstat -lp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 *:ssh *:* LISTEN 629/sshd
tcp6 0 0 [::]:ssh [::]:* LISTEN 629/sshd
udp 0 0 *:bootpc *:* 463/dhclient3
Active UNIX domain sockets (only servers)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ACC ] STREAM LISTENING 7190 667/dbus-daemon /var/run/dbus/system_bus_socket
unix 2 [ ACC ] STREAM LISTENING 5888 1/init @/com/ubuntu/upstart
unix 2 [ ACC ] STREAM LISTENING 7312 741/acpid /var/run/acpid.socket
unix 2 [ ACC ] SEQPACKET LISTENING 26855 21843/udevd /run/udev/control
Changer: exécuter (host = 'xxx.xxx.xxx.xxx', port = 8080)
L'erreur est socket.error: [Errno 99] peut assigner l'adresse demandée.
Modification à: run (host = '0.0.0.0', port = 8080)
... qui se lie au serveur pour toutes les adresses IP/interfaces. En tapant l'adresse IP publique EC2 dans le navigateur avec et sans: 8080 affiche "Cette page n'est pas disponible".
Idéalement, la première option à savoir. run (host = 'xxx.xxx.xxx.xxx', port = 80) devrait fonctionner car c'est ainsi que d'autres serveurs web sont lancés. Quelqu'un at-il des idées pour résoudre celui-ci?
EDIT: ajouté dernière série de lignes de strace -f:
write(2, " File \"/usr/lib/python2.7/Socke"..., 70 File "/usr/lib/python2.7/SocketServer.py", line 419, in server_bind
) = 70
open("/usr/lib/python2.7/SocketServer.py", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=23321, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f434cbfe000
read(4, "\"\"\"Generic socket server classes"..., 4096) = 4096
read(4, "service) is to maintain an\nexpli"..., 4096) = 4096
read(4, "set()\n\n def shutdown(self):\n "..., 4096) = 4096
read(4, "n't use serve_forever()\n - fi"..., 4096) = 4096
write(2, " ", 4 ) = 4
write(2, "self.socket.bind(self.server_add"..., 38self.socket.bind(self.server_address)
) = 38
close(4) = 0
munmap(0x7f434cbfe000, 4096) = 0
write(2, " File \"/usr/lib/python2.7/socke"..., 57 File "/usr/lib/python2.7/socket.py", line 224, in meth
) = 57
open("/usr/lib/python2.7/socket.py", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=20485, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f434cbfe000
read(4, "# Wrapper module for _socket, pr"..., 4096) = 4096
read(4, "oo long.\"\n errorTab[10064] = "..., 4096) = 4096
write(2, " ", 4 ) = 4
write(2, "return getattr(self._sock,name)("..., 39return getattr(self._sock,name)(*args)
) = 39
close(4) = 0
munmap(0x7f434cbfe000, 4096) = 0
write(2, "socket", 6socket) = 6
write(2, ".", 1.) = 1
write(2, "error", 5error) = 5
write(2, ": ", 2:) = 2
write(2, "[Errno 99] Cannot assign request"..., 42[Errno 99] Cannot assign requested address) = 42
write(2, "\n", 1
) = 1
rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7f434c7d1cb0}, {0x41d920, [], SA_RESTORER, 0x7f434c7d1cb0}, 8) = 0
close(3) = 0
exit_group(1) = ?
Avez-vous essayé d'exécuter Python en tant que root? – Blender
> sudo python hw.py donne l'erreur Impossible d'attribuer l'adresse demandée. –
Exécuter avec 'strace -f', coller les bits pertinents avant l'erreur. – soulseekah