What distribution is CirrOS based on?
cirros currently uses buildroot to build the image. The build process is documented in the README of the cirros source code (lp:cirros).
For a kernel, cirros simply re-uses the latest Ubuntu 12.04 kernel at the time of the cirros release. Future versions of cirros are likely to use 14.04 kernels. Re-using a kernel simply means I don't have to deal with building/patching/configuring my own.
I believe it is an entirely custom-built Linux distribution, it's not based on an existing distro.
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I want to install Openstack on CentOS 8(single node). I am having single machine (physical machine) where I want to install all nodes of Openstack. This setup I required for simulation only not production use.
I have tried to install Openstack using packstac 3 times but couldn't success.
I got different issues during installation:
1.In first attempt After installation, I tried to create instance, but not getting console of instances even after it got created successfully.
2. In second attempt, during deployment of instance, network not getting allocated.
3. In third attempt, it got stuck at packstack, puppet testing only.
I have followed below 2 links:
https://computingforgeeks.com/install-openstack-victoria-on-centos/
https://www.google.com/amp/s/www.linuxtechi.com/install-openstack-centos-8-with-packstack/amp/
I followed each and every steps mention in the likns.
I want to create two Ubuntu VMs on Openstack.
Can someone provide me some links/video, where I can get everything which is required to install Openstack on single node and create two Ubuntu VMs and assign network to them and test the connectivity between these two VMS.
Thanks in advance.
I would use official Packstack documentation. Note that you should start with a totally fresh Centos installation; i.e. don't try to install Packstack on a server where a previous installation failed (or succeeded).
You can also try Devstack. Its default configuration requires a smaller machine than Packstack (in my experience, 8GB RAM should be sufficient). Same remark: Start with a fresh installation of Centos or Ubuntu.
Microstack is another alternative. Its advantage is a very simple and quick installation; its disadvantage is a very strange (in my opinion) configuration and not a lot of documentation. However, it is suitable for your purpose. It claims to work on any Linux, Windows and MacOS; it does require snap.
I suggest directly installation onto Ubuntu Server.
some time ago I wrote a serie of posts in which I explained in detail how to install OpenStack Rocky. The 2 first blog posts ([1] and [2]) contain commands, examples, content of configuration files that cover common scenarios and tips for the successful installation of most OpenStack services (keystone, nova, glance, etc.) in a single node, and the third post [3] describes the installation of a computing node. This 3rd post is installed in a different node for the sake of making it easier to understand how nova works, but the installation can be safely carried out in the same node than the other components.
I find that the posts are short enough and are very easy to follow (I use that blog as my installation tips, and so I have used them for several deployments). The only caveat is that it is based on Ubuntu, but if you know about your installation, it should be easy to translate the installation to CentOS (some colleagues have used these tips for CentOS installations).
I tried to install Openstack several times last week (october 2021): a) with CentOS 8 Stream to metal hardware (real server) with devstack - no one version was installed (neither Master nor Xena & Wallaby, version Viktoria & below are not for Stream OS); b) Virtual machine with CentOS 8 Stream installed with packstack - installation was clearly successful (!), quite easy for install (according to official RDO project and its homepage), however there is the real problem with virtual and actual networking: no external network is accessible, router created was OK with external connection (router IP was detected successfully from outside) but no connection was possible from and to instance. So I conclude the Openstack package is not completely documented to resolve problems, however its installation can be quite easy (when successfully finish ;) )
Addition: Of coarse, there are resources with an information how network can be configured, official Openstack docs describes different network configurations as well (however it is difficult to find it for one click and being newbie), but anyway this system requires a lot of time to study before usage.
I have installed devstack in my server as per this steps and I was looking for some updated instructions to install kubernates cluster in it. Even though my question is on kubernetes I would like to clarify few points.
Is Openstack opensource ? or the opensource version is called devstack. Because I was trying to install a production ready environment but everywhere I see examples to install devstack or the one is few years old.
How to Install Openstack not Devstack
And finally can someone please help me with instruction to install kubernetes on devstack as thats the one I could install now and I guess the instructions would be almost similar.
I know there are posts but almost all of them are few years old so a help would be greatly appreciated.
Hoping that it is allowed to reference my own work: I wrote a short series of articles about Kubernetes on Devstack, both Kubernetes from scratch and using OpenStack Magnum.
The document that you used to install OpenStack describes not Devstack, but Microstack.
OpenStack is 100% open-source, yes. See https://www.openstack.org/.
Devstack is one of the many ways to deploy an OpenStack cloud. Its original purpose is to set up a test environment for OpenStack developers, and not so much to be user-friendly, but it is often used for training or proof-of-concept.
There are many other deployment methods: Microstack (easy but not very flexible), Packstack (requires RHEL or Centos), Tripleo (also requires RHEL or Centos and a bit more powerful hardware), Kolla-Ansible, and the best method for learners in my opinion: Manual setup. This list is far from complete.
I am new to cloud computing and GCP. I am trying to create a notebook instance running R with a GPU. I got a basic instance with 1 core and 0 GPUs to start and I was able to execute some code which was cool. When I try to create an instance with a GPU I keep getting all sorts of errors about something called live migration, or that there are no resources available, etc. Can someone tell me how to start an R notebook instance with a GPU? It can't be this difficult.
The CRAN (The Comprehensive R Archive Network) doesn't support GPU. However, you can follow this link might help you to install a Notebook instance running R with a GPU. You need a machine with Nvidia GPU drivers installed then install R and Jupyter Lab. After that compile those R packages which require it for use with GPU's.
Recently I installed openstack using devstack on my laptop. The problem I'm facing is to launch an instance, since my pc have poor ressources (32 bits, 4 Go Ram, 20Go free space), I need to deploy a very small image.
I tried an iso image for an ubuntu, I downloaded also a image from Ubuntu Cloud images but both of them can't be started. All I want to do is to launch an instance, install java, Tomcat server.
Any advice about an image that I can use?
Try Ubuntu Server Cloud Image
It will run perfectly with 512 MB of RAM.
Also stop unwanted services to save memory. Like stop ssh, sendmail, crond If you are not using them.
Use ubuntu cloud images. Make sure your cloud image is also 32bit.
While spawning instance, see that you look into Nova Security groups to allow ports which you might use.
devstack has cirros built-in. It is probably as small as you can get. It is a limited distro, but you should be able to download the jdk installer and run it.
You may need to download a 32 bit cirros image. The cirros distro downloads are available here:
https://launchpad.net/cirros/+milestone/0.3.0
This image should work for you:
https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-i386-disk.img
You can try any image which are at **https://docs.openstack.org/image-guide/obtain-images.html.
In these Ubuntu image is one which you can use and install applications on it.
It comes with default username ubuntu and you can set new password using cloud-init of heat template or manually while launching the instance.
I have some questions:
Is it possible to install openstack on a Notebook with a 4GB DD3 Ram? Because the website says it needs atleast 8GB of RAM.
They say it requirs a double-QuadCore , I assue that means Octacore. Can we install that on a Quadcore?
They say that there is no possibility to install it on a NAS . Did you find any where if there is a possibility to do?. I dint find any even after asking our friend(google).
All in all, is it at-all possible to install on it a notebook/Desktop?
That advice is for production environments,
so 1)If you just want to play around your notebook will do fine. I had a succesful test-run on a 1.2 Ghz 1GB Netbook. It became incredibly slow when it launched it's first instance...
With a Double Quadcore they actually mean two seperate Quad-cores, as in two quad-core xeon processors on a single motherboard
So 2) yes you can install it on a quad-core.
3) a NAS device running openstack an openstack storage service seems to be unlikely indeed. You will most likely need more computing power.However If your NAS supports NFS or SSH or sth you can probably mount this drive and use it for storage.
4) You can perfectly build a all-in-one openstack test setup on your notebook. Performance will be low, but acceptable for testing.
It depends on what you mean by "install OpenStack". OpenStack itself is an extremely modular framework consisting on many services (Compute, Networking, Image service, Block Storage, Object Storage, Orchestration, Telemetry, ...). On top of that, a typical production deployment of OpenStack also requires several components, like load balancers, caching systems, firewalls, web servers and others. It is definitely possible to install a minimal openstack system, even on an average laptop.
The simplest way to run OpenStack on a laptop/desktop is to use Devstack, a shell script that installs all services from source and run them (by default) on a single machine. It is customizable enough to provide very good testing ground; it's used by OpenStack developers as well as the OpenStack QA team to test latest developments against "real" systems.
To avoid messing up your system, it's generally recommended to install OpenStack in a VM. From devstack doc:
DevStack should run in any virtual machine running a supported Linux release. It will perform best with 2Gb or more of RAM.
As of the time of this writing (Jan 2015), supported distros are:
Ubuntu (latest LTS)
Fedora
CentOS
Regarding NAS: you can of course use it, but "outside" Openstack apis, by providing mount points to your vms. It's even mandatory if you want to support live migration.