Does devstack completely install openstack? I read somewhere that devStack is not and has never been intended to be a general OpenStack installer. So what does devstack actually install? Is there any other scripted method available to completely install openstack(grizzly release) or I need to follow the manual installation steps given on openstack website?
devstack does completely install from git openstack.
for lesser values of completely anyways. devstack is the version of openstack used in jenkins gate testing by developers committing code to the openstack project.
devstack as the name suggests is specifically for developing for openstack. as such it's existence is ephemeral. in short, after running stack.sh the resulting ( probably ) functioning openstack is setup... but upon reboot it will not come back up. there are no upstart or systemd or init.d scripts for restarting services. there is no high availability, no backups, no configuration management. And following the latest git releases in the development branch of openstack can be a great way to discover just how unstable openstack is before a feature freeze.
there are several vagrant recipes in the world for deploying openstack, and openstack-puppet is a puppet recipe for deploying openstack. chef also maintains an openstack recipe as well.
Grizzly is a bit old now. Havana is the current stable release.
https://github.com/stackforge/puppet-openstack
http://docs.opscode.com/openstack.html
http://cloudarchitectmusings.com/2013/12/01/deploy-openstack-havana-on-your-laptop-using-vagrant-and-chef/
and ubuntu even maintains a system called maas and juju for deploying openstack super quickly on their OS.
https://help.ubuntu.com/community/UbuntuCloudInfrastructure
http://www.youtube.com/watch?v=mspwQfoYQks
so lots of ways to install openstack.
however most folks pushing a production cloud use some form of configuration management system. that way they can deploy compute nodes automatically. and recover systems quickly.
also check out openstack on openstack.
https://wiki.openstack.org/wiki/TripleO
I think the code should be same, but at least the configuration is not same, for example, devstack will by default use nova network. In a manual installation, you can choose neutron. so:
if you are starting to learn openstack, devstack is a good starting point. with it, you can quickly have a development env.
if you are deploying openstack env, devstack is not a choice, and
instead you need install it following the installation guide.
If you would like another scripted option for deployment, you can try Packstack. This will work only on Fedora and RHEL.
https://wiki.openstack.org/wiki/Packstack
https://www.rdoproject.org/install/quickstart/
In this, you can choose which services you would like to install. For example you may choose to install Neutron for networking purposes, instead of using nova.
Also, it lets you deploy multiple instances of compute nodes by just providing it's IP !!
Yes. Devstack is a tool which help you build all in one for Openstack environment in quickly (Just take a coffee cup and wait until complete). Normally they were using for developer to develop new features and/ or test code quickest. For operator, we need to setup by manual step by step for each services.
To build via devstack repo then you need pull newest source-code from http://git.openstack.org/openstack-dev/devstack. then create new local.conf in devstack folder. And run ./stack.sh.
For example local.conf: https://github.com/pshchelo/stackdev/blob/master/conf/local.conf.sample
Yes, Devstack install all the components of Openstack. But when you use basic configuration then it will install core components of openstack which are the base of openstack cloud platform to run some basic things.
And in Advance configuration of openstack you should configure your local.conf file for what type of services and components you want to install or use in your cloud.
https://github.com/openstack/tacker/blob/master/devstack/local.conf.example
Related
We run Openstack with KVM as hypervisor and now need to run ESXi 6 or 7 inside a VM (nested virtualization). This is mainly for converting disks to proper vmdk disks, not really running any VMs under ESXi (that is why we are not using a barebone and run esxi as hv)
We run this very same setup under Proxmox without bigger issues, the main point was using the vmxnet driver for the NIX. That is exactly where we fail with Openstack. It seems there is no such driver, using e1000 does not working. Booting the installation iso leads to 'no nic found' in the very end.
We are using Openstack Xena with Debian-Buster as compute (running libvirt) on kernel 5.10/5.14.
Any hints how to get this up and running?
Using https://github.com/virt-lightning/esxi-cloud-images i managed to get it working for 6.5/6.7 but not 7.0.
One seems to not be able to install ESXi via ISO on the an OpenStack instance itself (directly), since no matter if you use e1000 (6.x) or e1000e (7.x) for the installation, the installer will not be able to find the NIC during the installation. Also for the 6.x installer under Openstack, it could not find any disks (with or without the SATA flag).
Instead, I used the repo above to build an pre-installed esxi images shipped via qcow - it is build on my local machine and thus my local libvirt. Not sure yet why this makes a huge difference, maybe the nova based abstraction or something else hinders Openstack (no verification yet).
Building the 6.5/6.7 based qcow2 image locally, importing it via glance (ensure you use e1000 for 6.x and e1000e for 7.x) and then creating a new instance.
This will get you up and running on 6.5/6.7 with proper DHCP and network configuration.
For 7.x the interface is detected, but somehow DHCP is not working. I tried with q35 and different other options, but could not get 7.x to work until know.
I created a fork at https://github.com/EugenMayer/esxi-cloud-images to
proper expose credentials one can login
remove ansible zuul usere with a predefined public key by the author
cleanup the readme
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 want to understand what magic can OpenContrail do as Software Defined Networking and I am new to this OpenContrail Concept and VMs, etc. To understand this, I just want to install OpenContrail on my Ubuntu VM. I tried to follow this Official quick Start Guide. But. It looks It installs OpenStack Components also when I invoke fabric Scripts.
Is it mandatory to use OpenStack to understand the magic of OpenContrail.? If Yes, Why is it so.?
Thanks,
Ganesh
You can try to use a simpler set of instructions and use docker containers:
http://www.opencontrail.org/docker-with-opencontrail/
There is also work going on in order to be able to provision opencontrail with kubernetes as a cluster management system. Reach out in the #opencontrail channel on freenode.net if you want to try one of these options.
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.