I'm working in a lab. There are many windows-PCs in this lab and I'm using one of them.
There is also a proxy server, which allows all of PCs to be able to connect to the Internet.
Now, I have a Red Hat 7 machine, which connected to my PC, meaning that it doesn't connect to the proxy server.
| | | |
| Internet |<--- proxy server |<--- my PC |<--- RHEL7
| | | |
Saying that the IP of my PC that the RHEL7 can ping is a.a.a.a
, the IP of the proxy server that my PC can ping is b.b.b.b
and the used port of the proxy server is 8080
.
Now, I need to make the RHEL7 surf the Internet. Here is what I've done:
1) I do the configuration on my PC as below:
port_forwarding(a.a.a.a, 6113, b.b.b.b, 8080)
2) I do the configuration on the Linux machine as below:
export http_proxy="http://my_name:[email protected]:6113/"
export http_proxys="https://my_name:[email protected]:6113/"
export ftp_proxys="ftp://my_name:[email protected]:6113/"
Now, I can wget www.google.fr
on my RHEL7. My configuration works.
Then, I execute yum makecache
and here is the output:
me@localhost:/etc/yum.repos.d$ yum makecache
Loaded plugins: langpacks, product-id, search-disabled-repos
base | 3.6 kB 00:00:00
extras | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
(1/10): base/x86_64/group_gz | 165 kB 00:00:00
(2/10): base/x86_64/primary_db | 6.0 MB 00:00:02
(3/10): extras/x86_64/primary_db | 165 kB 00:00:00
(4/10): extras/x86_64/filelists_db | 217 kB 00:00:00
(5/10): base/x86_64/filelists_db | 7.3 MB 00:00:03
(6/10): extras/x86_64/other_db | 106 kB 00:00:00
(7/10): base/x86_64/other_db | 2.6 MB 00:00:00
(8/10): updates/x86_64/filelists_db | 4.5 MB 00:00:01
(9/10): updates/x86_64/other_db | 573 kB 00:00:00
(10/10): updates/x86_64/primary_db | 7.6 MB 00:00:03
It seems that yum makecache
works. However, when I execute sudo yum update
, I get an error:
https://mirrors.huaweicloud.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: mirrors.huaweicloud.com; Unknown error"
Trying other mirror.
https://mirrors.huaweicloud.com/centos/7/extras/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: mirrors.huaweicloud.com; Unknown error"
I've tried all of mirrors here: http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os, but I always get the same error.
BTW, the output of curl -v mirrors.huaweicloud.com
:
* About to connect() to proxy 192.168.120.176 port 6113 (#0)
* Trying 192.168.120.176...
* Connected to 192.168.120.176 (192.168.120.176) port 6113 (#0)
* Proxy auth using Basic with user 'me'
> GET HTTP://mirrors.huaweicloud.com/ HTTP/1.1
> Proxy-Authorization: Basic ejAwNDM2ODgwOnI2Ni0xODE2
> User-Agent: curl/7.29.0
> Host: mirrors.huaweicloud.com
> Accept: */*
> Proxy-Connection: Keep-Alive
>
< HTTP/1.1 301 Moved Permanently
< via: proxy A
< Date: Fri, 10 Apr 2020 03:49:09 GMT
< Server: CloudWAF
< Location: https://mirrors.huaweicloud.com/
< Set-Cookie: HWWAFSESID=b0be07ce156888de4e; path=/
< Set-Cookie: HWWAFSESTIME=1586490548595; path=/
< Content-Type: text/html
< Cache-Control: public
< Content-Length: 182
< Proxy-Connection: Keep-Alive
<
<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>openresty</center>
</body>
</html>
* Connection #0 to host 192.168.120.176 left intact