Good news for those who need HPC, HA and just an SSI cluster, finally
I have good news for you. It seems that today I instigated Kerrighed fathers to debian their work.
What does this mean for us, for ordinary people? Do you have a computer with Ubuntu or some other Debian-like Linux? Let's call it Computer №1 . On it, you can do something ordinary, like
well, you probably have to spend a couple of minutes on the configuration. Next, rebooting Ubuntu, you will see the newly created kernel in the grub-menu. Choose and get into the usual Ubuntu with one unusual property, let's call it " SSI with DRBL " ...
')
OK, do you have a computer in the same network segment at home or in the office? - Let's call it Computer number 2 . It doesn't matter what is installed on it, even though Windows, at least nothing - the disk will not be touched anyway. In short, you enter its BIOS. There you find and expose “Boot from Network / Ethernet / PXE” - most computers of recent years have this option. Restart.
Computer # 2 begins to boot into Ubuntu via the network, using Computer # 1 as a “donor”. At the end of the download, computers # 1 and # 2 will become a single Linux system . This is a cluster. Such a cluster system is called SSI (Single System Image), and DRBL means that the nodes of such a cluster were not loaded from a hard disk, but through a network.
If you have, say, 25 four-core computers in the office, then after loading you will see Linux, which has 100 cores: o)
I used this joy about 5 years ago on the basis of Redhat + OpenSSI. Now, if everything is OK, a new bundle of Ubuntu + Kerrighed will appear
What does this mean for us, for ordinary people? Do you have a computer with Ubuntu or some other Debian-like Linux? Let's call it Computer №1 . On it, you can do something ordinary, like
apt-get install kerrighed-kernel...well, you probably have to spend a couple of minutes on the configuration. Next, rebooting Ubuntu, you will see the newly created kernel in the grub-menu. Choose and get into the usual Ubuntu with one unusual property, let's call it " SSI with DRBL " ...
')
What kind of beast is "SSI with DRBL"?
OK, do you have a computer in the same network segment at home or in the office? - Let's call it Computer number 2 . It doesn't matter what is installed on it, even though Windows, at least nothing - the disk will not be touched anyway. In short, you enter its BIOS. There you find and expose “Boot from Network / Ethernet / PXE” - most computers of recent years have this option. Restart.
Computer # 2 begins to boot into Ubuntu via the network, using Computer # 1 as a “donor”. At the end of the download, computers # 1 and # 2 will become a single Linux system . This is a cluster. Such a cluster system is called SSI (Single System Image), and DRBL means that the nodes of such a cluster were not loaded from a hard disk, but through a network.
If you have, say, 25 four-core computers in the office, then after loading you will see Linux, which has 100 cores: o)
I used this joy about 5 years ago on the basis of Redhat + OpenSSI. Now, if everything is OK, a new bundle of Ubuntu + Kerrighed will appear
Source: https://habr.com/ru/post/113387/
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