Dyn issues affecting joint customers
Today there is an ongoing, large scale Denial-of-Service attack directed against Dyn DNS. While Cloudflare services are operating normally, if you are using both Cloudflare and Dyn services, your website may be affected.
Specifically, if you are using CNAME records which point to a zone hosted on Dyn, our DNS queries directed to Dyn might fail making your website unavailable, and presenting a “1001” error message.
Some popular services that might rely on Dyn for part of their operations include GitHub Pages, Heroku, Shopify and AWS.
As a possible workaround, you might be able to update your Cloudflare DNS records from CNAMEs (referring to Dyn hosted records) to A/AAAA records specifying the origin IP of your website. This will allow Cloudflare to reach your origin without the need for an external DNS lookup.
Note that if you use different origin IP addresses, for example based on the geographical location, you may lose some of that functionality by using plain A/AAAA records. We recommend that you provide addresses for many of your different locations, so that load will be shared amongst them.
Customers with a CNAME setup (which means Cloudflare is not configured in your domain NS records) where the main Continue reading
Ericsson Hit with 3Q Net Loss, Paints Bleak View of 4Q
But the Cisco partnership is still thriving.
DDoS Attack Causes Widespread Outages — Twice
A DNS service gets downed twice (so far) on Friday.
SDxCentral Weekly News Roundup — October 21, 2016
CoreOS announced that Redspread has joined the company to extend Kubernetes.
Corsa’s Data-Plane Appliance Absorbs 100G DDoS Attacks
As DDoS attacks escalate, routers can't always keep up.
DDoS Attack On DNS Provider Disrupts Okta, Twitter, CNN, Others
Widespread attack illuminates vulnerability of the Internet's Domain Name System (DNS) infrastructure.
Data Center Interconnect for Juniper Contrail (SDN Controller)
Juniper Contrail is Software Defined Networking (SDN) controller which automate the network provisioning in a Virtual Data Center. In traditionally server hyper-visor environment there is still need to configure and allow VLANs on Data Center switches ports connected with servers, which involves inordinate delays due to lengthy “Change Process” approval and dependency on many teams. But modern centers can not afford such delays for service provisioning as delay in service provisioning means lost of revenue.
The scope of this blog is to discuss:-
- How physical servers can talk with servers deployed inside SDN environment. .
- Layer 2 & Layer 3 Data Center Interconnect (DCI) solution between two enterprise Data Centers (DCs)
Above diagram shows architecture of Contrail , quick overview of Contrail inner working described below, please follow the link for Contrail in depth reading (http://www.opencontrail.org/opencontrail-architecture-documentation/)
- Contrail control node act as central brain.
- Contrail installs an instance of vRouter on each compute node.
- Each vRouter on a compute node creates separate VRF (Virtual Routing and Forwarding table) for each particular subnet for which a Virtual Machines are created.
- Full mesh MP-iBGP is configured by Contrail and all vRouters, Overlay tunnels (MPLS over GRE, MPLS over UPD or VXLAN used to Continue reading
How Long Before Burst Buffers Push Past Supercomputing?
Over the last couple of years, we have been watching how burst buffers might be deployed at some of the world’s largest supercomputer sites. For some background on how these SSD devices boost throughput on large machines and aid in both checkpoint and application acceleration, you can read here, but the real question is how these might penetrate the market outside of the leading supercomputing sites.
There is clear need for burst buffer technology in other areas where users are matching a parallel file system with SSDs. While that is still an improvement over the disk days, a lot …
How Long Before Burst Buffers Push Past Supercomputing? was written by Nicole Hemsoth at The Next Platform.
How Long Before Burst Buffers Push Past Supercomputing?
Over the last couple of years, we have been watching how burst buffers might be deployed at some of the world’s largest supercomputer sites. For some background on how these SSD devices boost throughput on large machines and aid in both checkpoint and application acceleration, you can read here, but the real question is how these might penetrate the market outside of the leading supercomputing sites.
There is clear need for burst buffer technology in other areas where users are matching a parallel file system with SSDs. While that is still an improvement over the disk days, a lot …
How Long Before Burst Buffers Push Past Supercomputing? was written by Nicole Hemsoth at The Next Platform.
Worth Reading: The psychology of bad passwords
The post Worth Reading: The psychology of bad passwords appeared first on 'net work.
Why Network Automation Needs DevOps
What used to take hours now takes minutes, or less.
Even more Docker Labs!
Since we launched Docker Labs back in May, we’ve had a lot of interest. So we keep adding more and improving the labs that we have. We now have 22 hands on labs for you to choose from, ranging from beginner tutorials to much more advanced ones. Here’s a peek at what we have:
- To accompany the launch of Windows containers in Microsoft Windows Server 2016, we launched a Windows Container beginner tutorial to walk you through setting up your environment, running basic containers and creating a basic Docker Compose multi-container application using Windows containers.
- We added 6 security tutorials to take advantage of some of Docker’s strong security features.
- A Docker community member liked our Java debugging tutorials so much, he translated our labs into Spanish.
- We added a new Node.js tutorial to show how to easily you can debug Node.js applications live in container.
So check out Docker Labs to learn more about using Docker. And as always, we really encourage contributions. So if you have a lab you want to get out there, or find a way to improve what we have, please contribute today.
The post Even more Docker Labs! appeared first on Docker Blog.