How to mount RAMFS, TMPFS in Centos, Redhat, Fedora, Ubuntu

How to Use and mount RAMFS / TMPFS in Centos, RHEL, Fedora, Ubuntu?

Definition :
RAMFS Random Access Memory Filing System
TMPFS Temporary File System / Temporary File Storage

RAMFS / TMPFS is used to assign or allocate a part of physical memory to be used as a individual partition which can be used for storing data (Reading, Writing) like all other Disk partition on a system. As the data is stored in RAM (Random Access Memory) it is much faster than that of writing or reading from a System Physical disk Partition.

Install / Setup Nagios on Fedora 7

These are supplement notes I had taken down a while back doing an install of nagios and n2rrd on a Fedora-7 box and recently came very handy when doing the install in a redhat (RHEL-3) box as well:

Nagios Install:

# yum install nagios nagios-plugins nagios-plugins-http nagios-plugins-icmp nagios-plugins-ping

On RHEL3, I used (dags rpms) rpmforge. Here is my yum.conf for rpmforge:

name = Red Hat Enterprise $releasever - RPMforge.net - dag
baseurl = http://apt.sw.be/redhat/el3/en/$basearch/dag

Notes: I settled for icmp instead of ping, as it is a lot faster. However, icmp required setting setuid for "/usr/lib/nagios/plugins/check_icmp" for it to work. Also, had to rebuild nagios-plugins from source as root in order for the plugin to be installed.

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