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Analyzed 4 months ago. based on code collected 4 months ago.
Posted about 13 hours ago by Pavlo Shchelokovskyy
The post Universal access: An early prototype for graphical VNC console in Ironic appeared first on Mirantis | Pure Play Open Cloud. Ideally, users should be able to have the same experience (such as the VNC console) to access their nova instances -- ... [More] even if they're created by Ironic. The post Universal access: An early prototype for graphical VNC console in Ironic appeared first on Mirantis | Pure Play Open Cloud. [Less]
Posted about 13 hours ago by Vinoth Kumar Selvaraj
How to manually configure your OpenStack environment to work with OpenDaylight VTN Manager The post OpenDaylight VTN Manager integration with OpenStack appeared first on OpenStack Superuser.
Posted about 13 hours ago by Major Hayden
IBM Interconnect 2017 is coming up next month in Las Vegas. Last year’s conference was a whirlwind of useful talks, inspiring hallway conversations, and great networking opportunities. I was exhausted by the week’s end, but it was totally worth it. ... [More] One of my favorite sessions from last year was Tanmay Bakshi’s keynote. It was truly […] The post What I’m looking forward to at IBM Interconnect 2017 appeared first on major.io. [Less]
Posted about 13 hours ago by Superuser
Shannon McFarland from Cisco Systems explains how to disable IPv4 NAT in this How-To guide. The post How to disable NAT for IPv4 appeared first on OpenStack Superuser.
Posted about 13 hours ago by Major Hayden
NOTE: The opinions shared in this post are mine alone and are not related to my employer in any way. The first OpenStack Project Teams Gathering (PTG) event was held this week in Atlanta. The week was broken into two parts: cross-project work on ... [More] Monday and Tuesday, and individual projects Wednesday through Friday. I was […] The post OpenStack isn’t dead. It’s boring. That’s a good thing. appeared first on major.io. [Less]
Posted 1 day ago by Rich Bowen
Posted 3 days ago by Jean Philippe Braun
Introduction SDN products are evolving fast. The release cycles can be short and more and more features are added in each cycle. This is clearly a change that network administrators weren’t used to with hardware solutions. In this context the ... [More] operational team in charge of the SDN functionnality of the platform must be confident when deploying new releases. For that matter the team must be able to test new builds for ISO functionality with the previous build, and detect possible regressions. Of course SDN vendors are already running end to end tests on their releases but does they test your use cases ? And what if your are building yourself the SDN software ? You cannot be sure that your build passes the vendor tests. A good idea would be to integrate the vendor functionnal tests in your CI platform but it is not always possible. The tests are maybe not distributed or even runnable outside the vendor infrastructure. At Cloudwatt we are building our version of OpenContrail, meaning OpenContrail upstream branch with backports and sometimes non upstreamed patches that are specific to our platform. As for OpenContrail functionnal tests there is repository avaiable at https://github.com/Juniper/contrail-test-ci. We tried to run these tests in our CI but it quickly becomes a nightmare. The tests are open but clearly not suitable to be run on a generic CI platform. In the end we decided to write our own functionnal tests. Objectives The tests we want to run can be sumarized in 3 steps Deploy an infrastructure with multiple VMs, VNs, SGs, etc… Generate some traffic with classic network debugging tools (ping, netcat, netperf, scappy…) Validate that the traffic is going to the right place and has the right shape As for the global objectives of the tests we want to be SDN agnostic. We also want to avoid any large customization of the VMs images like setting up agents and be able to control them. Ideally we should be able to integrate a complex customer stack and test it with minor modifications. Finally the orchestration must be simple as possible. Our solution Instead of reinventing the wheel and to make tests as KISS as possible we are using two powerful tools: Terraform[1] which is used to deploy the infrastructure for the test and can also modify it during the test Skydive[2] which is used to validate the traffic In our tests we are not checking internals of the SDN solution, OpenContrail in our case. We’d like to keep the tests backend agnostic and in the end if the test passes we can assume that the backend is behaving correctly. Because of that we don’t need a complex setup to run the tests so they can be run simply from a laptop. Basically you need terraform and skydive being deployed on the platform. The tools are easy to deploy or install. Terraform is quite well known. It provides a DSL to describe the infrastructure you wish to deploy on a cloud provider. In our case we are using the Openstack provider but Terraform can handle other providers as well (AWS, Azure…). The tool is quite comparable to the Heat component in the Openstack world. The advantage of Terraform over Heat is that you can do incremental updates to your infrastructure. Skydive on the other end is quite new and not widely used yet. The project aims to provide a tool to debug and troubleshoot network infrastructures and especially SDN platforms. It provides a representation of the network topology (interfaces, links between them) and traffic capture on demand via REST apis. In our tests we are using the ondemand capture feature to validate the traffic in the infrastructure. The “hello world” test So, how a test would look like with this solution ? For example, let’s have a look on a simple security group test. The goal of the test is to validate that 2 VMs can talk to each other because the SG allows it, then after removing some rule of the SG we validate that the traffic is dropped. Terraform stack First we need to describe the infrastructure to setup with Terraform. We are booting 2 VMs (sg_vm1, sg_vm2). They are spawned in the same VN (sg_net) and both use the same security group (sg_secgroup) which allows ICMP and SSH traffic. By using nova cloudinit API a script will be run on sg_vm1 that will run a ping to sg_vm2 as soon as the VM is booted. The test ifself Next we will write a small shell script to run a sequence of tasks. If one task fails the whole test should fail. The tasks to run in order would be: apply the terraform stack on the target environment start a traffic capture on the sg_vm1 port poll skydive until we see some ICMP traffic going out and coming back on the interface remove the ICMP rule of the security-group using terraform check with skydive that the ICMP traffic is going out the interface but that nothing is coming back destroy the infrastructure and the skydive capture This is the full script with comments: Doing this with bash isn’t probably the best option but it shows that with only a few lines we are able to have a end to end test. There is also no need for synchronization and no need to contact the VMs directly which makes things simpler. The VM gets its configuration and commands to run from the Nova metadata service then only requests to Skydive are made to ensure the traffic is behaving as it should. Result of the script: Conclusion Relying on powerful tools makes our lives easier and so our tests. Instead of developing a complete test framework in-house to do the same we rely on tools that have good community support. The glue between theses tools is so simple that you could rewrite the last test with some test framework in a day. Finally, investing time on these tools is interesting because they are not just useful for tests but in a lot of other use-cases, such as debugging production environmnents when some bugs passed trough the test CI! [1] https://www.terraform.io/ [2] http://skydive-project.github.io/skydive/ [Less]
Posted 3 days ago by Rob H
RackN revisits OpenStack deployments with an eye on ongoing operations. I’ve been an outspoken skeptic of a Joint OpenStack Kubernetes Environment (my OpenStack BCN preso, Super User follow-up and BOS Proposal) because I felt that the technical hurdles of cloud native architecture … Continue reading →
Posted 3 days ago by Stig Telfer
PG Day covered all things Postgres at FOSDEM 2017, and Steve Simpson, one of StackHPC's senior technical leads, presented at PG Day on his thoughts for how some of the advanced features of Postgres could really shine as a backing store for telemetry ... [More] , logging and monitoring. As Steve describes in his interview for FOSDEM PG Day, he understands Postgres from the intimate vantage point of having worked with the code base, and gained respect for its implementation under the hood in addition to its capabilities as an RDBMS. Through exploiting the unique strengths of Postgres, Steve sees an opportunity to both simplify and enhance OpenStack monitoring in one move. He'll be elaborating on his proposed designs and the progress of this project in a StackHPC blog post in due course. Steve's talk was recorded and slides are available on slideshare. [Less]
Posted 3 days ago by Ramon Acedo
Enable Ironic in the Overcloud in a multi-controller deployment with TripleO or the director, a new feature introduced in Red Hat OpenStack Platform 10. The post Deploying Ironic in OpenStack Newton with TripleO appeared first on OpenStack Superuser.