Forced shutdown

Yesterday, we encountered a disk issue on one of our CentOS servers. Some of the disks had either failed, or were predicting failure, so our vendor swooped in, changed some of the disks, as well as the RAID controller. Unfortunately, this worked for only a short time, before we started seeing “input/output error” verbiage in […]

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Linux: Ifconfig and its replacement

Recently I installed CentOS 7 Minimal, and lo and behold, command not found. As it turns out, ifconfig while you can still get via ‘yum install net-tools‘, we should be a bit more forward looking, and use it’s designated replacement. To quote Doug Vitale’s excellent article: some Linux tools that, while still included and functional […]

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SOLVED: rrd.h not found

I was trying to compile collectd on a old CentOS 6 host, and ./configure complained that rrdtool couldn’t be found; e.g. rrdtool . . . . . . . no (rrd.h not found) I’d intended to use rrdtool to collect instance-level metrics and then graph ’em out with CGP, so it was pretty annoying.┬áTIL that […]

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Proftpd for CentOS 6

More of a note to self than anything. As usual, YMMV. 1. Add RPMForge repo. # rpm –import # wget # rpm -Uvh rpmforge-release-0.5.3-1.el5.rf.x86_64.rpm # yum install proftpd -y # chkconfig –level 345 proftpd on # /etc/init.d/proftpd restart # netstat -tnlp|grep proftpd tcp 0 0 :::21 :::* LISTEN 36615/proftpd 2. Configure iptables. # […]

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