Python pip 在安装库时引发 NewConnectionError [英] Python pip raising NewConnectionError while installing libraries
问题描述
我在 Linux 服务器上运行 Python 3.我需要安装一些库(显然)所以我正在尝试:
I've Python 3 running in a linux server. I need to install some libraries (obviously) so I'm trying :
pip3 install numpy
导致以下错误:
Collecting numpy
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f7542572828>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/numpy/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f7542572eb8>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/numpy/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f7542572be0>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/numpy/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f7542572d30>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/numpy/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f7542572860>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/numpy/
Could not find a version that satisfies the requirement numpy (from versions: )
No matching distribution found for numpy
问题:
- 可能是什么问题?为什么会出现此错误?
- 将来如何避免这种情况?
欢迎询问更多详情.
更新:我试过 ping google.com 并得到错误:
UPDATE:
I tried ping google.com and got the error:
ping: google.com: Name or service not known
但是当我尝试 ping 8.8.8.8 时，我得到:
But when I tried ping 8.8.8.8, I got:
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=118 time=10.8 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=118 time=10.6 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=118 time=10.6 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=118 time=10.6 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=8 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=9 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=10 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=11 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=12 ttl=118 time=10.8 ms
64 bytes from 8.8.8.8: icmp_seq=13 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=14 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=15 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=16 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=17 ttl=118 time=10.6 ms
64 bytes from 8.8.8.8: icmp_seq=18 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=19 ttl=118 time=10.6 ms
64 bytes from 8.8.8.8: icmp_seq=20 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=21 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=22 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=23 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=24 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=25 ttl=118 time=10.7 ms
64 bytes from 8.8.8.8: icmp_seq=26 ttl=118 time=10.7 ms
^C
--- 8.8.8.8 ping statistics ---
26 packets transmitted, 26 received, 0% packet loss, time 25046ms
rtt min/avg/max/mdev = 10.655/10.731/10.827/0.073 ms
可能是 DNS 有问题?我该怎么办?
A problem with DNS maybe? What should I do?
推荐答案
我所要做的就是将 nameserver 8.8.8.8 添加到/etc/resolv.conf 文件中.8.8.8.8 是 Google 的公共免费 DNS 服务器的 IP.因此，由于系统必须知道域名的 IP 地址，我们必须给它一种方法来做到这一点.公共 DNS 服务器提供域名与 IP 地址的这种绑定.
All I had to do was add nameserver 8.8.8.8 to the /etc/resolv.conf file. 8.8.8.8 is Google's public free DNS server's IP. So, since a system must know the IP address of a domain name, we have to give it a way to do just that. A public DNS server provides this binding of a domain name to the IP address.
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