OVERVIEW:
ELIOT Tailor OS is a customized and a light weight version of Minimal Cent OS. The purpose of tailored OS creation is to ensure that ELIOT Deployment supports lightweight OS of any kind.
PROCEDURE:
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To ensure system/os stability, Please follow the below steps in a Ubuntu VM with moderate configurations created using any tools like VirtualBox, Qemu, etc |
Download CentOS minimal iso from the below link / any other link. File size will be around 1 GB.
https://mirror.umd.edu/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1908.iso
1. Mount the centos iso file
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root@akraino-vm-001:# mkdir -p /mnt/linux
root@akraino-vm-001:# mount -o loop <downloaded_iso_path.iso> /mnt/linux
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2. Mounted centos iso is readonly and so change the files with write access
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root@akraino-vm-001:# cd /mnt/
root@akraino-vm-001:# tar -cvf - linux | (cd /var/tmp/ && tar -xf - )
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3. Removing unnecessary packages:
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root@akraino-vm-001:# cd /var/tmp/linux
root@akraino-vm-001:# rm -rf Packages/<package.rpm>
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Note:
Removable Packages list
1.bluez.rpm
2.dejavu-fonts-common.rpm
3.dejavu-sans.rpm
4.screen.rpm
5.mozilla-filesystem.rpm
6.shim.rpm
7.zip.rpm
8.startup-notification.rpm
9.ModemManager.rpm
10.libreport.rpm
11.hicolor.rpm
12.fontconfig.rpm
13.pango.rpm
14.pixman.rpm
15.cairo.rpm |
4. Create Bootable iso:
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root@akraino-vm-001:# cd /var/tmp/linux
root@akraino-vm-001:# mkisofs -r -T -J -V "<name>" -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o ../newimage.iso .
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-V <name> --> must match with isolinux/isolinux.cfg file's label attribute |
Once Bootable iso created, we can create Virtual Machine using that bootable iso. We can deploy our ELIOT topology on top of that.