-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 26/04/2013 04:03, Nathan Moore wrote: > Context: small academic cluster of SL5.8 machines, x86_64. > > Recently, some of the machines on the cluster stopped being able to > access the outside internet. Machines can still update via ftp, yum, > nslookup, and ping, but http requests beyond the local cluster seem to > be universally denied. I've never encountered a problem like this > before (and it is probably my own fault, as I am a self-taught > sys-admin), but I'm wondering if anyone else has seen a similar problem. > > Bonus points if you can tell me where in /etc or /var I should look to > find the offending config file. > > regards, > > NTM
Hello Nathan could you be more specific about the procedure you are following and the error? there are a lot of layers involved in a "simple" http request :) things I would check: - - DNS name resolution, try accessing a website by its IP address - - proxy configuration (is it the same on every node?) - - firewalls Gilberto - -- - -- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iQIcBAEBAgAGBQJRejUbAAoJEFs07fyVhi0A7XIQAIdkIULVFsZiqrSqtl2+WZCb q3ac7cEyOZrkWxQDM1eW6DWzittwR6ozcTLUVCExnqCdpkyv7W+4HfPX9+e7jVTa Cuj8sh+c8zWemOOgA5/TG7uslDPn7HqKNKHnKVsjRVyxlhJ+wlGvQBG6g45/hH7O e0X3bC4fINaloYr99jrXGi8KFYsiWchr1SKdGSSi2VNKzzXd4pyCs8tA4UPCT5As mhxLwedUMPCFtjv1abH9d241I8gk+3kg7iKq8s0yrmmUlpUTXH0gPVKMgh/DR9yc IpDzbiE1NS5m3BabQcCKCPytea5dyZuBBmzr/BuR5DMwDDoALw2QCN+ddy/er/Jt Xb8grOYYtJLt1AVYDXmRTbC5aE7ppdTVC1pOuuQKyikBRdSza09C/7vnvC9dC8SD ZX3T+lZsRj6+8XlUfp1TbLjQNE+/Mm/Sm8prNDwynefCZ5Cx1jbyJW6Dr2JLp/dn WXxq1Gt7evfm8CwClfDjmZWLHD9RGV01KTIpzBPVxi/3zwtRzZ1ypXt7gvFv/XpK z/UvWAr+jzfIxeZjBzs6hLCIkFUlAhHCMoYENKMVlA2sJgzcpIs1aR42dkTCk5WE f6a6ByQNFYq9QnuOSriPipeNrTfuDDl6eV526cbMBTwb7qcVdJIL1L0vw8q8tQPz X4nKNqyQxr6uOKLNxS3s =n7xI -----END PGP SIGNATURE-----