My new shell scripting fun.

[mapes]

I never been much of a scripter before. Well I decided to change that. I know most of you are not unix people but, I just had to share my latest creation. First a bit of info. So I work testing network equipment. We have racks of computer in a lab. We also use vmware. I wanted a way to slap a unix OS on these machines. A while ago I found away to have the machines boot over the network and start installing a OS. I can do this both for windows and linux. The only thing I need to do is change some entries in the MS DHCP server we have and then tell the client to PXE boot. Well we use VMware as well. Usually I
1. Ghost a linux image that has VMware already running
2. Modify the image
3. Then create the VMs
4. Boot the VMs to give them they're MAC address
5. Add the MAC address to the MS DHCP server with the right options
6. Reboot the VMs

So I wanted to script as much as this as possible. So my script requires a file with a lit of IPs for the machine. What the script does
1. Create 16 Debian VMs
2. Power the VMs on (to generate the MAC address)
3. Power off the VMs
4. Upgrade the VM config file
5. Get all of the MAC addresses and create a batch file that has the proper netsh.exe command to update the DHCP Server (I have to copy this to the DHCP Server and run it)
6.Get a list of the VMIDs (internal reference number for the VM)
7.Make it so all the VMs start on a reboot of the vmware server
8.Create a power on/off all vm script

So I would then copy the bat file to the MS DHCP server and run it. Then run the poweron all script. The Linux OS installs over the network from a local mirror in about 15 minutes for all VMs. I then run the poweroff script andthen the poweron script again. Presto I have 16 Debian Linux Virtual Machines. I'll post the script in a follow up post
3.

[mapes]

Heres the script


#!/bin/bash
#Delete old dhcpconf.bat file and add scope option to allow FAI PXE
echo "netsh.exe Dhcp Server 192.168.41.2 Scope 192.168.32.0 delete optionvalue 60" > /var/lib/vmware/dhcpconf.bat
#set number of VMS
VMCOUNT=16
#Start loop
while [ $VMCOUNT -ne 0 ]
do
#Check VMCOUNT var and lookup ip addy for this vm in the iplist file
IP=$(grep -n "$VMCOUNT" /var/lib/vmware/iplist |grep "$VMCOUNT:" | cut -d: -f 2)
#create vmdisk and vmx files
./createvm.sh debian4 -n $HOSTNAME-deb32-$VMCOUNT -q
#Register vm with server
vmrun -h https://localhost:8333/sdk -u root -p xxxxx -T server register "[standard] $HOSTNAME-deb32-$VMCOUNT/debian4.vmx"
#Upgrade VMs
vmrun -h https://localhost:8333/sdk -u root -p xxxxx -T server upgradevm "[standard] $HOSTNAME-deb32-$VMCOUNT/debian4.vmx"
#Start VM to generate MAC addy
vmrun -h https://localhost:8333/sdk -u root -p xxxxx -T server start "[standard] $HOSTNAME-deb32-$VMCOUNT/debian4.vmx"
#Stop VM
vmrun -h https://localhost:8333/sdk -u root -p xxxxx -T server stop "[standard] $HOSTNAME-deb32-$VMCOUNT/debian4.vmx"
#Grep vmx file for vm mac addy, vm name
MAC=$(grep /var/lib/vmware/Virtual\ Machines/$HOSTNAME-deb32-$VMCOUNT/debian4.vmx -i -e "00:0c:" | awk '{print $3}' | sed s/\"//g | awk '{print $0}' | sed s/\://g)
VMNAME=$(grep /var/lib/vmware/Virtual\ Machines/$HOSTNAME-deb32-$VMCOUNT/debian4.vmx -i -e "deb32" | awk '{print $3}' | sed s/\"//g)
#Create bat file to run on gandalf to delete exsisting lease, then add reservation to pxe boot debian install
echo "netsh.exe Dhcp Server 192.168.41.2 Scope 192.168.32.0 Add reservedip $IP $MAC "\"$VMNAME.shire.bluearc.com"\" "\""\" "\"BOTH"\"" >> dhcpconf.bat
echo "netsh.exe Dhcp Server 192.168.41.2 Scope 192.168.32.0 set reservedoptionvalue $IP 12 STRING "\"$VMNAME"\"" >> dhcpconf.bat
echo "netsh.exe Dhcp Server 192.168.41.2 Scope 192.168.32.0 set reservedoptionvalue $IP 66 STRING "\"192.168.41.201"\"" >> dhcpconf.bat
echo "netsh.exe Dhcp Server 192.168.41.2 Scope 192.168.32.0 set reservedoptionvalue $IP 67 STRING "\"pxelinux.0"\"" >> dhcpconf.bat
#decrament vm number
VMCOUNT=$(( $VMCOUNT - 1 ))
done
#get vms ID number and put into file
vmware-vim-cmd vmsvc/getallvms |cut -d " " -f 1 |grep [0-9] > vmids
#paste together three files creating command to autostart vms
paste /var/lib/vmware/vmware-vim-cmd /var/lib/vmware/vmids /var/lib/vmware/autostart > /var/lib/vmware/poweron
chmod 777 /var/lib/vmware/poweron
/var/lib/vmware/poweron
#Create file to power on all vms
paste /var/lib/vmware/vmware-vim-cmd-power-on /var/lib/vmware/vmids > /var/lib/vmware/powernow
chmod 777 /var/lib/vmware/powernow
echo "RDP into Gandalf and make sure there are no DHCP leases for the IP's you used"
echo "Copy the dhcpconf.bat to Gandalf and run as administrator"
echo "This will add the right entries into the DHCP Server to pxeboot and install Debian"

[Duke{CLR}]

It's all Chinese to me.

[Apache Warrior]

Actually Japanese Kanji.
Apache

[{CLR} ObiTroy]

That's awesome, mapes. Shell scripting rocks.

[baconoclock]

Ugh, believe me mapes. All i work with is unix.

[mapes]

Ugh, believe me mapes. All i work with is unix.

What do you do?

[Savage_Hobo]

Looks good! We're working on some scripting for a project at school for a Live USB/CD.

[Pumpkin_Jack]

Im more lost than the Easter Bunny in July

its a bunc of gibberish to me

[Warhead]

I dunno why you're only printing 3 dollars...

Did you do this just to see if you could, or is this one of those "OMFG, I have do this AGAIN!" sanity saver deals?

[{CLR} Cobalt]

Wut

[Skud]

Actually Japanese Kanji.
Apache

I dated a Japanese lady who showed me some Kanji. When she said she knows around 6,000 characters, and some folks know 8-10,000, etc., I pretty much lost interest in the subject, changed the subject. Memorization is not a Skudlike quality...I probably wouldn't be able to speak or walk upright if I had to make room for all those symbols in my head. And, yes, Mapes' script I'll leave untouched as well. But, hey, Mapes, nice work, I think.

[Apache Warrior]

You used to have to know 6500 kanji to have a 6th grade education. They lowered the requirements later (I do not remember the date) There are over 50,000 Kanji but quite a few are rarely used. You would probably have to know 2000 Kanji plus Hiragana and Katakana (both are phonetic languages) to be able to read Japanese Newspapers, signs and labels. When you write Kanji, stroke order and direction are extremely important.
And to think, we only have to learn 26 letters.
Apache

[{CLR} Cobalt]

You used to have to know 6500 kanji to have a 6th grade education. They lowered the requirements later (I do not remember the date) There are over 50,000 Kanji but quite a few are rarely used. You would probably have to know 2000 Kanji plus Hiragana and Katakana (both are phonetic languages) to be able to read Japanese Newspapers, signs and labels. When you write Kanji, stroke order and direction are extremely important.
And to think, we only have to learn 26 letters.
Apache

And Apache slam dunks the competition with historical facts FTW.

In 1987 I had a chance to learn unix, but didnt think I had the time. I wish I would have taken the time now. I always was intrigued by programming old school. Got around in DOS ok but thats were I left off.

Good work though.

[baconoclock]

What do you do?

I'm a systems engineer in the remote hosting section of the company i work for. Clients will pay for us to host their systems and everything related to it. So part of my role is to make sure they stay in 99.999 uptime. We mainly use hpux and AIX.