Current Vespa distribution, rpm, works on RedHat linux. Is there any easy way to setup multi node vespa cluster on Debian Linux machines?
As of today, you must build Vespa as described in http://docs.vespa.ai/documentation/build-vespa.html on Debian - then follow http://docs.vespa.ai/documentation/multinode-systems.html.
I do not know of any blockers on Debian, curious to learn, please share your experiences and make PRs for documentation/Vespa improvements :-)
Related
At the time of writing this question, Ubuntu 22.04 is almost out. I am curious about how fast the developers will migrate from older versions (potentially from 18.04 LTS) to the new LTS. This is important for me to decide which Ubuntu version I should target with my application.
The best would be some statistics about the usage of the different Linux distros and versions, potentially with time scale. There are a few charts and list out (e.g., https://distrowatch.com/dwres.php?resource=trending) but I could not find any statistics that go down to the distro's version level.
What is the best or "official" source to get this information from?
The repository 'https://packagecloud.io/realm/realm/linuxmint serena Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
We don't support Linux Mint at this time.
Edit regarding the comment:
We support Linux. It's the only platform we support in production.
We support Ubuntu 16.04, CentOS 6 & 7 (as indicated on the website). You can trivially create a docker container or VM using one of these base images on Linux Mint. We have a number of issues requesting Debian support, Fedora support, native Docker image, but none formally requesting Linux Mint support.
We obviously want to make the experience as painless as possible for everyone, but we also have to be very strategic when deciding to add a new platform as officially supported. Our CI has to build and test every single change on this new platform. We have to be able to support our users, etc. For example, we already have some bugs that only appear on CentOS 6, but not on 7 nor Ubuntu, so we want to make sure we stabilise things before moving ahead.
Feel free to submit a feature request to support Linux Mint. That way you will have a place where you can ask us directly about progress.
I am just learning linux kernel programming with the LINUX KERNEL DEVELOPMENT book(I am beginner linux kernel programming but not on linux programming). It is possible to test programs in a kernel machine with VMware viritual on Ubuntu without damage my system ?
Yes you can safely test kernel modules on a virtual machine!
I'll give you some links that may help:
watch this site
http://free-electrons.com/
in particular this book:
http://free-electrons.com/doc/books/ldd3.pdf
Also this guide:
http://www.tldp.org/HOWTO/Module-HOWTO/
An embedded distro is even better
An Ubuntu guest is fine, but I prefer to keep things minimal and use an embedded distro, as this will make things:
simpler and easier to understand and control
faster
In particular, I recommend using:
Buildroot, which is highly configurable, documented and maintained, also builds host QEMU so easy to patch it up (e.g. to add your own devices since out-of-tree devices are not possible yet ?)
QEMU emulator: small comprehensible source, ARM support, official Android emulator, kernel GDB support
Embedded distros can generate rootfs images smaller than 10MiB, and it becomes possible to understand the entire userland setup, which will make it easier to focus on the kernel.
I have made a setup to make everything as automated as possible: https://github.com/cirosantilli/linux-kernel-module-cheat
I've been using a VM for a long time for Linux kernel programming and I've never had any problem. Actually, if you manage to violate the protections of a VM then you will probably be hired by Oracle or VMWare :D
However, I recommend you to read this post: https://security.stackexchange.com/questions/23452/is-it-safe-to-use-virtual-machines-when-examining-malware
I am trying investigate various inter-core communication mechanism on my Dual core Arm-Cortex Processor. One of the core is running a baremetal application and another one is running Linux operating system. I just came across the remoteproc framework ( rpmsg) and I could not find much information online. Only information i found was http://lwn.net/Articles/489009/ which is quite less to get started. Is there any one who could help me with this?
I come across the same issue as well. I found some additional resources:
Doc in the kernel tree as always:
https://www.kernel.org/doc/Documentation/remoteproc.txt
OMAP wiki that gives the overview of the design:
http://omappedia.org/wiki/Design_Overview_-_RPMsg
BTW. Thanks for the lwn link. That's quite helpful.
Since Xilinx' Zynq SoC also includes 2 ARM Cortex-A9 cores, they have published an application note in which they make a Linux Kernel communicate with a FreeRTOS system via remoteproc/rpmsg. You can find the document here: PDF
Although the document is quite specific, you might be able to pull out some information. You can download the sources here: Sign in to Download File (a Xilinx account is required). The *.bsp file can be renamed to *.tar.gz which can then be extracted.
If you have any further questions, don't hesitate to ask.
I am developing a project based on OpenCV. Currently I am working on Ubuntu 10.04 system with AMD turion processor. But project need to work as an embedded system. So I am using a readymade board based on ARM11 processor with SAMSUNG S3C6410 processor. It supprot Linux 2.6.28. It also support ubuntu. So how could I port my code from the host system to my embedded system.
Thanks
This is link for the board.
http://www.minidevs.com/
I think the best way to start, is to take a look at Angstrom/OpenEmbedded.
It's a framework for building OS images for various embedded platforms. You could take the precompiled-images, but I've realized that after a while it's not worth the hassle.
Just build the target image yourself (with OpenCV for the target platform, it definitely builds for S3C2440 (tested it myself a year ago or so) and for all OMAP3 platforms (BeagleBoard, EVM and the like).
Then, use OpenEmbedded to build the cross-compiler (there is a package name for that), install it on your host machine, and you should be ready to go.
If there is no support for S3C6410, just use any other ARM11 platform out there, and install the packages. It is likely your vendor-supplied OS was built using OpenEmbedded, it quickly becomes de-facto standard.
http://www.angstrom-distribution.org/
http://www.openembedded.org
Check Linaro if the processor you are looking for is ARM. It looks promising. http://www.linaro.org/