UNIX for Dummies Questions & Answers

Due to downsizing and attrition, I have inherited SysAdmin tasks, but unfortunately not all the required knowledge and skills came to me along with the assignment -> so I appreciate any advice and help ( be patient with my newbie terms and questions).

We moved a central server and changed it's IP address. Now a Cron job running on another server is broken.

here are the details:
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Need help with broken CRON task.

History:

We recently moved a server (name “ntpinet” )and had to change its IP address. A Cron job running on another server (name “mfg-02”) stopped working at that time.

Here is the Cron job that is attempting to run:

Code:

/usr/bin/rsync -e /usr/bin/ssh -I /root/.ssh/id_rsa -z -u -t --recursive root@ntpinet.inse.lucent.com: /usr/local/apache/htdocs/transfer/mfg02/home/samba/share/MAC.dat /home/sanmina/

This CRON should pull the updated MAC.dat file from the /usr/local/apache/htdocs/transfer/mfg02/home/samba/share/ directory on your machine ntpinet to the /home/sanmina/ directory on mfg02 .

I checked the file in that directory on ntpinet and it is up to date.

The id_rsa key file is from May 27, 2005 so maybe it is out of date and the rsync command is being rejected?


Steps tried:

1) had suggested that I remove the ntpinet entry on mfg02 from the known_hosts file and it would regenerate the key when it tried ssh to ntpinet the next time.
Removed the entry, but did not seem to regenerate the key

I looked at the known_hosts file on ntpinet under /root/.ssh and the mfg02 machine doesn't seem to be there.

So, I copied back the original known_hosts file on mfg02 and then edited the IP address in there to add the new ip address and name ntpinet server. So I made that one change on mfg02 , adding ntpinet to the known hosts file on mfg02.

2)
When I try to run the script manually, it hangs and finally gives the following timeout message.

Code:

[root@mfg02 ]# /usr/local/scripts/rsync.sh
ssh: connect to host ntpinet.inse.lucent.com port 22: Connection timed out
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(165)

Maybe I need to gen a new rsa_id script on ntpinet or mfg02 marlboro. I noticed ntpinet had a dsa_id but no rsa_id.

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Help !

Sounds like dns resolving is broken - this host - ntpinet.inse.lucent.com - can't be resolved correctly by the client, in your case "mfg-02". This could be either : hard-coded instead of dynamic DHCP issue, i.e. client is still trying to connect to the server based on the old IP, or connection to this server, SSH one on port 22 is simply broken. Try using the IP address instead of the hostname.