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Host Information at Login
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The hostinfo command creates a quick summary of the server at login time. It is especially useful in environments with a lot of servers at different OS levels. The summary looks like this:
--[ hostinfo v0.55-2 ]------------------------------------ Hostname: jrecord4 Current As Of: 08/01/08 09:35:56 Distribution: SUSE Linux Enterprise Server 10 Service Pack: 1 Kernel Version: 2.6.16.46-0.12-default Architecture: i386 IPv4 Address: 137.65.55.73 eth0 (static) IPv4 Address: 192.168.20.20 eth1 (static) Total/Free Memory: 504/8 MB Hard Disk: /dev/sda 8 GB Hard Disk: /dev/sdb 8 GB Hard Disk: /dev/sdc 3 GB User Logged In: uid=0(root) gid=0(root) on pts0 Owner: Jason Record Function: Test Server -----------------------------------------------------------
You can also create an html page with the same information, by running hostinfo -w > info.html.
Installation Instructions
- Remove the previous package
- Download the current hostinfo RPM package
- Install the hostinfo RPM package
- Use the "hi" alias to see the current information
- You can add a "Function" line by creating a single line file called /opt/hostinfo-function.txt
- You can add an "Owner" line with /opt/hostinfo-owner.txt
rpm -e hostinfo
rpm -ivh hostinfo-0.55-2.noarch.rpm
Version 0.55-2
- Added the tty for login
- Added the -i switch for hostinfo to replace the /etc/issue file
- Added free memory
- Added -f to include free disk space. However this only works if the df output includes the same devices as the /proc/partitions.
Version 0.51-8
- Added hostinfo(5)
- Includes all ethernet addresses found
- Added -t and -T sec switches for a timer. The default is 30 seconds with -t.
- Added -f to include free disk space, but this only works for mounted partitions found in /proc/partitions.
- Free memory is not reported along with total memory.
Version 0.30-5
- Added cciss support
- Added a <title> tag to the -w output
- If the network is not configured, an error displayed. The error no longer displays.
Related Articles
User Comments
Slanted towards SLES as root?
Submitted by AndyDeck on 22 January 2008 - 1:46pm.
The app as written appears slanted towards running on SLES as root:for example, the Service Pack entry is blank on OpenSuSE 10.1, and the Hard Disk info from fdisk cannot be filled in by a regular user. There's also a conflict with NoMachine's NX software, apparently - I get errors from NX when hostinfo is set to run in /etc/profile.local that go away when hostinfo is removed.
Slanted towards SLES as root?
Slanted towards SLES as root?
Submitted by jrecord on 25 January 2008 - 9:16am.
Yes, it is slanted a bit toward SLES and root. The disk information comes from the fdisk command, which is root only. The service pack is correct on OpenSuSE 10.1, because it does not have a service pack. OpenSuSE 10.3 for example is a different product without any service packs. I am considering a way to get the disk information as a non root user though. Using /proc/partitions for example. Thanks for the feedback!
-jason
df -h
Submitted by peterhine on 28 January 2008 - 1:13am.
You could use 'df -h'. it is available to everyone.
eg:
admin@server:~> df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 97G 17G 80G 18% /
tmpfs 2.0G 56K 2.0G 1% /dev/shm
/dev/sda1 99M 11M 84M 12% /boot
/dev/evms/DATA 450G 264G 186G 59% /opt/novell/nss/mnt/.pools/DATA
admin 4.0M 0 4.0M 0% /_admin
DATA 118G 87G 31G 75% /media/nss/DATA
SOFTWARE 157G 125G 32G 80% /media/nss/SOFTWARE
MASTER 98G 51G 48G 52% /media/nss/MASTER
df -h
Submitted by jrecord on 28 January 2008 - 11:15am.
Yes it would work. Currently I only pick one disk, and the first disk the OS detects. Really I need to determine what the "Hard Disk" label is going to mean. The intent is to show the size of disk in the server available for use. However, I currently only show the first disk detected by fdisk. What I probably need to do is enhance the script to show all disks and their sizes. If I use /proc/partitions in association with df output, I could probably get what I want. I could also get the information from /proc/parititons, once I figure out how to calculate the number given in the output. I just haven't taken the time yet.
-jason
using /proc/partitions
Submitted by AndyDeck on 19 February 2008 - 9:43am.
This was nagging at me too, so I figured out a method that comes pretty close to producing identical output for non-root users (un-wrap the lines at the "\"):
DISK_SIZE="$(fdisk -l 2>/dev/null
\ | grep ^Disk | egrep 'sda|hda|xvda'
\ | head -1 | awk '{print $2, $3, $4}' | cut -d',' -f1)"
if [ -z $DISK_SIZE]; then
DISK_SIZE="$(egrep 'sda|hda|xvda' /proc/partitions
\ | head -1 | awk '{print $3 *1024/(1000*1000*1000)}')"
DISK_SIZE="$(egrep 'sda|hda|xvda' /proc/partitions
\ | head -1 | awk '{print "/dev/"$4":"}') $DISK_SIZE GB"
fiThen, replace the print statement with this to use the new calculated values:
printf "$ROW_OUT" "Hard Disk:" "$DISK_SIZE"Thanks for the Feedback
Submitted by jrecord on 26 February 2008 - 11:15am.
Thanks everyone for the feedback. The updated version should work out for everyone. Please let me know if you have anymore ideas for it.
partitions at a hp server
Submitted by keutterling on 7 March 2008 - 5:22pm.
Could you change the partions matching regexp to:
'[s,h,xv,c][0-9]?d[a-z,0-9]$'
# cat /proc/partitions
major minor #blocks name
104 0 35561280 cciss/c0d0
104 1 1052226 cciss/c0d0p1
104 2 34507620 cciss/c0d0p2
7 0 4460422 loop0
thx :)
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