https://www.billbrown.info/series/red-hat/Recent content in Red Hat on Bill Brown:Thoughts and Reference Material OnlineHugo -- gohugo.ioenBillBrown.infoThu, 22 Sep 2005 00:00:00 +0000https://www.billbrown.info/post/red-hat-trouble-sysrq/Thu, 22 Sep 2005 00:00:00 +0000https://www.billbrown.info/post/red-hat-trouble-sysrq/ <h2 id="red-hat-trouble-sysrq">Red Hat Trouble SYSrq</h2> <hr> <h2 id="sysrq">SysRq</h2> <h3 id="how-to-enable-magic-sysrq-in-red-hat-linux">How to Enable Magic SysRq in Red Hat Linux</h3> <p>Magic SysRq key sequence is used to collect additional system information to aid in the troubleshooting of system hangs or panics.</p> <p>NOTE: Disable ASR so that ASR will not restart the server before the SysRq information can be captured.</p> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1012089347386563" crossorigin="anonymous"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-1012089347386563" data-ad-slot="9168865232" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <p>1. Ensure that “Kernel Hacking” has been compiled into the running kernel.<br> CONFIG_MAGIC_SYSRQ=y This is required for SysRq to work. It’s enabled on all RHEL by default.</p>https://www.billbrown.info/post/redhat-trouble-netdump/Thu, 22 Sep 2005 00:00:00 +0000https://www.billbrown.info/post/redhat-trouble-netdump/ <h2 id="redhat-trouble-netdump">RedHat Trouble netdump</h2> <hr> <h2 id="netdump-server-and-client-setup">Netdump Server and Client setup</h2> <p>netdump server: collard.alf.cpqcorp.net (16.113.5.139)<br> netdump client: bubba.alf.cpqcorp.net (16.113.5.104)</p> <h3 id="setup-netdump-server">Setup Netdump Server:</h3> <p>1. Check to see if the netdump-server is installed:<br> #rpm –qa | grep –i netdump-server</p> <p>If it is not already installed, install the netdump-server package.<br> #rpm –ivh netdump-server-0.6.11-3.i386.rpm</p> <p>2. Set a password for the netdump user.<br> # passwd netdump<br> Changing password for user netdump<br> New password:<br> Retype new password:<br> passwd: all authentication tokens updated successfully</p>