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Showing posts from December, 2013

Slow SSH login SSH2_MSG_SERVICE_ACCEPT received

After installing new VM, my login to the server was with delay after entering the username.

The ssh -v logs shows as follow:

# ssh -v root@newserver 
...
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received

debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
...
and delay were happening at SSH2_MSG_SERVICE_ACCEPT received debug line,

This server being recently installed, it even couldn't resolve its own hostname:
# ping newserver.example.com ^C #


So for me I needed to add the new VM FQDN to dns server or to /etc/hosts file of the server:
# vim /etc/hosts 127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6 10.18.20.32 newserver.example.com newserver
And issue resolved. 

Even though disabling useDNS in sshd config file was solved the issue only from Linux client to new server and I still had de…

yum update [Errno -3] Error performing checksum

Recently I had this issue of checksum error while doing yum update in my RHEL5 servers.


# yum update
Loaded plugins: security
rhel5-local/primary_db                                                                                                                          |    0 B     00:00
ftp://10.8.227.50/pub/LocalYumRepoRHEL5.1/repodata/c7408a1fce29f12df452017556509b3a3ebde95d7d01e8ea0adb052f97c43e86-primary.sqlite.bz2: [Errno -3] Error performing checksum
Trying other mirror.
Error: failure: repodata/c7408a1fce29f12df452017556509b3a3ebde95d7d01e8ea0adb052f97c43e86-primary.sqlite.bz2 from rhel5-local: [Errno 256] No more mirrors to try.


The usaual following way didn't work for me:

# yum clean all
# yum clean metadata
# yum update


Further I have disabled fastmirror for my yum config and it didn't work as well:

# grep enabled /etc/yum/pluginconf.d/fastestmirror.conf
enabled=0


I've even disabled http cache in yum.conf but same error:

# cat /etc/yum.conf |grep http_caching
http_caching=no…