yum update not working on Fedora Core 4

[Kavitha Subramanian]

Hello there!

I am doing an install of RT on Fedora core 4 .
yum update is not working, recently I realised that telnet localhost is not working and I am not able to telnet from any other unix box either. Any help would be greatly appreciated.

Thanks.
Kavitha.

[Ivan Ferreira]

Fist of all, can you browse the Internet with an browser?

Second, you first must configure /etc/yum.conf to specify the locations of the update servers.

Third, telnet is not installed in Linux by default because is insecure.

And, if you cannot telnet to other hosts, please post the error that you have. Try disabling the firewall:

service iptables stop
chkconfig iptables off

[Kavitha Subramanian]

Ivan,

Thanks for your reply.
I stopped the iptables.
I am able to browse the internet from the linux box, but I am unable to use the 'yum update' feature . I am also not able to ping any website from the telnet session.

I am totally stuck here. Please help.

Kavitha .

[Steven E. Protter]

Check the validity of your /etc/yum.repos.d data. Make sure the respository is still there.

SEP

[Ivan Ferreira]

When you try to ping, what is the error that you have?

unknown host?
destination unreachable?

Maybe you can browse the Internet through a proxy server, but you don't have configured name servers.

Verify the /etc/resolv.conf file if you have specified the DNS servers, like:

domain mydomain.com
nameserver 192.168.1.1
nameserver 192.168.1.2
nameserver 192.168.1.3

[Kavitha Subramanian]

I have the /etc/yum.repos.d

-rw-r--r-- 1 root root 1123 Jun 3 14:12 fedora-devel.repo
-rw-r--r-- 1 root root 312 Jun 3 14:12 fedora-extras-devel.repo
-rw-r--r-- 1 root root 299 Jun 3 14:12 fedora-extras.repo
-rw-r--r-- 1 root root 294 Jun 3 14:12 fedora.repo
-rw-r--r-- 1 root root 330 Jun 3 14:12 fedora-updates.repo
-rw-r--r-- 1 root root 337 Jun 3 14:12 fedora-updates-testing.repo


Also checked the /etc/resolv.conf, it has the correct nameservers.
When I do a ping, it just hangs and when I type ctl+C , it comes up with 100% packet loss.

-------------------------------------------

[root@DougsDev4 ~]# ping www.google.com
PING www.l.google.com (64.233.161.104) 56(84) bytes of data.

--- www.l.google.com ping statistics ---
27 packets transmitted, 0 received, 100% packet loss, time 26006ms

--------------------------------------------

Any ideas ??

Thanks.

[Ivan Ferreira]

I think that another firewall is preventing ICMP packages (ping).

Can you browse to the servers listed in the /etc/yum.conf file?

What happens when you run yum check-update?

[Kavitha Subramanian]

I googled and added
HTTP_PROXY= http://PROXY:PORT/
ftp_proxy=http://PROXY:PORT/
no_proxy=http://PROXY:PORT/

all in upper and lower case .

Now yum update gives me the error

Cannot open/read repomd.xml file for repository updates .

[Kavitha Subramanian]

Problem fixed. Thanks to everyone who replied.

Here is what I did :

export HTTP_PROXY=http://@/
export FTP_PROXY=http://@/
export no_proxy=
export http_proxy=http://@/
export ftp_proxy=http://@/

yum update worked after the above proxy settings. I did not face this problem when I installed Fedora 4 and did the same RT install last time, now I wiped out the entire stuff on the machine and tried to do all over again from the beginning and I faced this issue.
Anyhow the problem is solved.

Thanks.

[Kavitha Subramanian]

Closing the thread .