![]() ![]() For example, one can easily boot a QEMU virtual machine using the image: $ qemu-system-x86_64 -drive file=linux. Starting the computer Insert the DVD in your drive and start the. Use your preferred burning utility to burn the DVD ISO just downloaded. We just created a bootable Linux disk image which can be dumped to a real or virtual drive. Burning the DVD Download a release of OSE on donwload page. All new objects are created into the young generation region (called 'eden'). Young generation objects are in a specific location into the heap, where the garbage collector will pass often. Young generation represents all the objects which have a short life of time. $ dd if=/usr/lib/syslinux/mbr/mbr.bin of=/os/linux.img bs=440 count=1 conv=notruncĪs a result of the steps from above, we will have a disk image linux.img in the working directory. From here: -Xmn : the size of the heap for the young generation. SAY Now booting the kernel from SYSLINUX.ĪPPEND ro root=/dev/sda1 initrd=/initrd.img ![]() $ dd if=/dev/zero of=/os/linux.img bs=$ /dev/loop0 /os/linux.imgįinally, we need to install the bootloader and unmount the image: $ apt-get update -y We need to create a sufficiently-sized image file first: $ IMG_SIZE=$(expr 1024 \* 1024 \* 1024) The following steps could be done directly on a Linux host machine, but since I use macOS at the moment, I'll start another Debian container as a builder machine: $ docker run -it -v `pwd`:/os:rw \ $ tar -tf linux.tar | grep -E '^*/?$'Īnd make a bootable disk image out of the tar archive. 30 more megabytes and we are almost there! Let's export container's filesystem: $ CID=$(docker run -d mydebian /bin/true) The reason for using a cloud provider is to prove that OpenNMS can monitor unreachable devices via Minion. and inspect the image with glorious wagoodman/dive: dive mydebian. (or VirtualBox, or Hyper-V, or VMWare ). Now let's build it with docker build -t mydebian. Let's create a Dockerfile with the following content to have the reproducible process: FROM debian:stretch Hence, we also need to address this discrepancy to bring container's state as close as possible to the full-fledged Debian installation. While a Linux operating system runs its init daemon as a process with PID 1, Docker containers usually have either shell or directly user-defined executable as a PID 1 processes. However, this is not the only difference. We can see Debian's userland in there, but at the same time, there is nothing about kernel
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