>-----Original Message----- >From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf >Of Sorin Srbu >Sent: Friday, February 20, 2009 11:36 AM >To: 'CentOS mailing list' >Subject: Getting "poll: protocol failure in circuit setup" from rsh > > I inherited a cpu-stats script from the previous *nixadmin at our > department. This script relies on a rsh-command to get the vmstats from the > remote machines and then using a perl script to push it to a web server. > >Now I've just added a new machine running CentOS 5.2 x64 to the script and I >get the error message in the subject line; "poll: protocol failure in >circuit setup". Replying on my own post for archival reasons: The error was in /etc/hosts.allow. I forgot to add a line "in.rshd: FQDN" in hosts.allow on the machine I imaged and then used to install to a bunch of other machines. Easy to miss though, there are a dozen or so other lines in there allowing other daemons and stuff. Fixing that, now "rsh remote-machine vmstat" works as expected. -- /Sorin
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