Often times you will run into machines that are on a restricted network and you have a proxy server that you can bounce through. To use a proxy in Linux, set the environment.
export http_proxy=http://server-ip:port/
References:
http://www.cyberciti.biz/faq/linux-unix-set-proxy-environment-variable/
… Read the restMany useful tools for LSI RAID cards
# MegaCli -AdpSetProp -AlarmSilence -aALL
Tools for monitoring
http://hwraid.le-vert.net/wiki/LSIMegaRAIDSAS#a3.4.megaclisas-status
References
http://thatlinuxbox.com/blog/article.php/lsi-megaraid-megacli
http://hwraid.le-vert.net/wiki/LSIMegaRAIDSAS
http://hwraid.le-vert.net/debian/sources/megaclisas-status_0.9.tar.gz
Being able to send out emails is ciritcal if you are monitoring things or need other services. There are a few parts to get this done and we will use CentOS 6.4 for our example.
tail -f /var/log/messages
ls /dev/sd*
lsscsi (need to install)
lshw (need to install)
fdisk -l /dev/sdf -> You should see a drive w/o any partitions and the correct size
parted -a optimal /dev/sdf --> aligns the partition to the nearest boundary.… Read the rest
Locate your disks:
ls /dev/sd*
Partition the disks:
fdisk /dev/sdb 'n' = New partition 'p' = Primary '1' accept the defaults 't' = Change filesystem type 'fd' = Linux RAID Autodetect 'w' = write the changes
Once the disk is installed create a partition of type ‘Linux raid autodetect’ (type fd) that is the same size as the remaining drives in the raid.… Read the rest
You use a combination of parted, ddrescue, and mount.
Parted will give you the offset to get to the filesystem.
ddrescue will recover the data from the disk and make an imagefile.
mount will allow you to mount the filesystem
These were based from Andre Miller’s website.… Read the rest
Before we can start creating logical volumes, first we need to initialize some of the disks/partitions that we would like to use as storage and place them into a volume group.
pvcreate <physical devices> vgcreate <volumeGroupName> <physical devices>
Now we simply create logical volumes.