Archive for August, 2012

Rundeck, operate batch hosts at the same time

Rundeck, a web-accessible console for dispatching commands and scripts to your nodes. Dispatch shell commands and scripts across all your physical or virtual nodes from a web-based or command-line interface. Automate ad-hoc and routine procedures. Use the API and plugins to integrate with other services. Use your LDAP/AD for authentication, and configure extensive access control.

Install Steps:

rpm -Uvh
yum install rundesk
/etc/init.d/rundeckd start
Default account: admin/admin

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Sendmail issue: Relaying denied

Aug 11 05:55:40 relay_host sendmail[25741]: [ID 801593 mail.notice] q7B4teTq025741: ruleset=check_rcpt, arg1=, [] (may be forged), reject=550 5.7.1 … Relaying denied. IP name possibly forged []
Aug 11 05:55:40 relay_host sendmail[25741]: [ID 801593] q7B4teTq025741: from=, size=1741, class=0, nrcpts=0, proto=ESMTP, daemon=MTA-v4, [] (may be forged)

the Relay host won’t allow your email goes out. because your hostname is not match with DNS.

nslookup , check the domain. and compare with your real host.

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