EC2，bottle.py连接

Question

无法使用具有公共IP地址的EC2 Ubuntu Linux 12.04实例启动bottle.py服务器。程序（hw.py）来自瓶子教程即。

from bottle import route, run 

@route('/hello') 
def hello(): 
    return 'hello world' 

run(host='xxx.xxx.xxx.xxx', port=80) 

运行方式：

> python hw.py 
or 
> sudo python hw.py 

生成错误：

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 

的EC2公共IP地址没有被连接到任何其它过程。端口80未连接到其他进程。

> 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 

更改为：运行（主机= 'xxx.xxx.xxx.xxx'，端口= 8080）

该错误是socket.error：[错误99]无法分配请求的地址。

更改为：运行（主机= '0.0.0.0'，端口= 8080）

...结合所述服务器到所有IP /接口。将EC2公共IP地址输入到带有或不带有8080的浏览器中将显示“此页面不可用”。

理想情况下，第一个选项，即。运行（host ='xxx.xxx.xxx.xxx'，port = 80）应该像其他Web服务器的启动一样工作。任何人有想法如何解决这个问题？

编辑：添加最后一组从strace的-f行：

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)       = ? 

Answer 1

试试这个。我用它来测试网络。在服务器的后台

from bottle import Bottle, run 

app = Bottle() 

@app.route('/') 
def index(): 
    return 'Service Running' 

run(
     app,     # Run |app| Bottle() instance 
     host  = '0.0.0.0', 
     port  = 8080, 
     reloader = True,  # restarts the server every time edit a module file 
     debug = True   # Comment out it before deploy 
     ) 

运行此文件（hw.py）：

$ cd path/to/your/file 
$ nohup python server.py & 

那么我认为你现在可以访问。

---

Changing to: run(host='0.0.0.0', port=8080)

... which binds the server to all IPs/interfaces. Typing the EC2 public IP address into browser with and without :8080 displays a "This page is not available".

情况下，该错误的，我认为你需要在你的根URL的一端与/hello参观。