Unable to use YUM

[Opeio]

OS: Centos 5.5

I get this error.

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[root@atlanta-quad293-i-4 ~]# yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=x86_64&repo=addons error was
[Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>
Error: Cannot find a valid baseurl for repo: addons

when ive looked VIA google people said this could be a cause.

In my case turned out that the machine, which was a nameserver on a restricted subnet just for nameservers, was blocked at the firewall from getting a translation address for external commo. As soon as that was permitted, yum worked fine.

[Opeio]

unable to find the edit button.

I ran a netstat -rn and none have a gateway

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[root@atlanta-quad293-i-4 ~]# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
64.XX.XXX.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
169.XXX.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
0.0.0.0         64.XX.XXX.XXX   0.0.0.0         UG        0 0          0 eth0

here is the contents of my

/etc/resolv.conf

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search hsd1.wa.comcast.net

Any help would be appreciated as i have never encountered this error with my other host

[Opeio]

Im trying more stuff just to check to make sure i can provide as much information as possible.

Firewall is not running

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[root@atlanta-quad293-i-4 ~]# service iptables status
Firewall is stopped.

[Opeio]

Also its not just yum, i believe its something along the lines of me not being able to do any outbound things. IE Ping/wget etc.

[Edge100x]

It looks like your resolv.conf is invalid. Try this command:

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echo 128.95.120.1 > /etc/resolv.conf

[Opeio]

It looks like your resolv.conf is invalid. Try this command:

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echo 128.95.120.1 > /etc/resolv.conf

I get this

[root@atlanta-quad293-i-4 ~]# echo 128.95.120.1 > /etc/resolv.conf
[root@atlanta-quad293-i-4 ~]#

[Edge100x]

That's what you should see, yes. Your applications (including Yum) should work properly now.

[Opeio]

It looks like your resolv.conf is invalid. Try this command:

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echo 128.95.120.1 > /etc/resolv.conf

Well after a few seconds of fiddling around it appears it was the resolv.conf what i ended up doing was.


I added "nameserver" prior to the ip you provided.

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search hsd1.wa.comcast.net
nameserver 128.95.120.1

Just for future reference for me since im still kind of new to this process where did you get that IP from?


Note*

That's what you should see, yes. Your applications (including Yum) should work properly now.

It didnt work after that it only started after i added the nameserver to the resolv.conf but you lead me in the right direction thnx

[Edge100x]

Dang nab it, you're right, I forgot the "nameserver" part. You'd think that after editing /etc/resolv.conf so many times, I'd get it right every time..

That IP is one of the University of Washington name servers, which I've been using myself for over 10 years, and it is very reliable. You could also use the InterNAP name servers in Atlanta, if you'd like. They are:

64.94.1.1
64.94.1.33