History doesn’t really repeat itself, but it surely does use a lot of synonyms and rhymes, and sometimes, if you listen very closely, you can catch it muttering to itself. …
In line with our promise last year to continue publishing incident reviews for Docker Hub, we have two to discuss from April. While many users were unaffected, it is important for us to be transparent with our community, and we hope it is both informative and instructive.
Starting at about 07:30 UTC, a small proportion of registry requests (under 3%) against Docker Hub began failing. Initial investigation pointed towards several causes, including overloaded internal DNS services and significant and unusual load from several users and IPs. Changes were made to address all of these (scaling, blocking, etc), and while the issue seemed to resolve for several hours at a time, it continued coming back.
The issue re-occurred intermittently into the next day, at which point the actual root cause was determined to be under-scaled load balancers doing service discovery and routing for our applications.
In the past, the bottleneck for the load balancing system was network bandwidth on the nodes, and auto scaling rules were thus tied to bandwidth metrics. Over time and across some significant changes to this system, the load balancing application had become more CPU intensive, and thus the current auto scaling setup Continue reading
I took the exam on 8th May 2021 and was able to crack it .Now you can call me AWS certified Associate .
I started thinking of giving the AWS associate exam more than a year back when my company provided us the free license of cloud Guru. We started a group of individuals who were interested in learning and taking the AWS associate exam. Our plan was to go through the cloud guru videos twice in a week during office hrs ( Allocated 1 hrs for learning ) and discuss any doubts related to topics. It all went very well for few weeks and suddenly people started missing sessions due to different reasons such as office meeting and workload. The group which started with 30 people reduced to 10 now and unfortunately I too dropped due to timing clash and office workload.
Almost after 6 months, again I started going through cloud Guru Videos and this time I was able to complete it and at that time i can easily rate myself 6 out of 10.
I went through AWS FAQ’s , I must say that they are must if you are preparing to take AWS exam.
I didn’t stop, Continue reading
The Cloudflare Web Application Firewall (WAF) protects websites and applications from malicious traffic attempting to exploit vulnerabilities in server software. It’s a critical piece of the broader security posture of your application. With that in mind, we made sure improvements to the Web Application Firewall dashboard experience made it easier to enable the WAF and configure rules to match the specific requirements of an application. In this post, I’ll share parts of the process we followed and the rationale behind the decisions we took when designing the new Web Application Firewall dashboard experience.
I’ve separated out my design process into three stages:
We support a range of customers — individual developers or hobbyists, small/medium-sized businesses where it’s common for a developer to fulfil multiple roles and responsibilities, through to large global enterprises where often there is an entire department dedicated to information security. Traditionally, product development teams use techniques such Continue reading
If there were doubts about how important the Internet is for everyone, 2020 put those to rest. As we push forward through this turbulent time, I want to take a moment to share some inspiration. The Internet Society’s 2020 Impact Report: The Internet Is a Lifeline is a storybook of ingenuity, collaboration, and what happens […]
After I created the Segment Routing lab to test the relationship between Node Segment ID (SID) and MPLS labels (and added support for IS-IS, SR-MPLS, and BGP to netsim-tools), I was just a minor step away from testing BGP-free core with SR-MPLS.
I added two nodes to my lab setup, this time using IOSv as those nodes need nothing more than EBGP support (and IOSv is tiny compared to IOS XE on CSR):
Join us for DockerCon LIVE 2021 on Thursday, May 27. DockerCon LIVE is a free, one day virtual event that is a unique experience for developers and development teams who are building the next generation of modern applications. If you want to learn about how to go from code to cloud fast and how to solve your development challenges, DockerCon LIVE 2021 offers engaging live content to help you build, share and run your applications. Register today at https://dockr.ly/2PSJ7vn
With DockerCon just around the corner, we’re pleased to announce our outstanding keynote speaker line-up.
Among the Docker luminaries taking the virtual stage May 27 will be CEO Scott Johnston, CTO Justin Cormack and VP of Products Donnie Berkholz. Look for keynotes, too, from special guests Dana Lawson, GitHub VP of Engineering, and Matt Falk, VP of Engineering, Data Science and Computer Vision at Orbital Insight.
Picking up hosting duties will be Docker’s Peter McKee and William Quiviger, along with DevOps consultant and Docker Captain Bret Fisher.
They’re just part of the one-day event packed with demonstrations, product announcements, company updates and more — all of it focused on modern application delivery in a cloud-native world.
Last year 78,000 registrants Continue reading
Frustrated by poor service from an MSP, the IT team at White Family auto dealers needed a more efficient way to connect locations while ensuring high performance and strong security to meet regulatory requirements. The company chose Fortinet for its network and security equipment. Fortinet is our sponsor, and we talk with Shane Williams, Director of IT; and Paul Provorse, System Administrator about going all-in with Fortinet to run their own show.
The post Tech Bytes: Auto Dealer Takes Network Control With Fortinet (Sponsored) appeared first on Packet Pushers.
I’m a bit late posting this … but this Thursday (an odd day for me) I’m running How the Internet Really Works, Part 1, over at Safari Books Online. From the page:
This live training will provide an overview of the systems, providers, and standards bodies important to the operation of the global Internet, including the Domain Name System (DNS), the routing and transport systems, standards bodies, and registrars. For DNS, the process of a query will be considered in some detail, who pays for each server used in the resolution process, and tools engineers can use to interact DNS. For routing and transport, the role of each kind of provider will be considered, along with how they make money to cover their costs, and how engineers can interact with the global routing table (the Default Free Zone, of DFZ). Finally, registrars and standards bodies will be considered, including their organizational structure, how they generate revenue, and how to find their standards.
You can register for the training at the link above. I’ll be giving part 2 of How the Internet Really Works next month.
Internet shutdowns harm societies, economies, and the global Internet infrastructure – that’s why we’re tracking disruptions on the Internet Society Pulse platform. There are thousands of disruptions to Internet access every day all over the world, but not all of them are the result of deliberate shutdowns. Lengthy outages are usually the result of technical errors, routing misconfigurations, or infrastructure failures. […]
Just about everyone prepends AS’ to shift inbound traffic from one provider to another—but does this really work? First, a short review on prepending, and then a look at some recent research in this area.
What is prepending meant to do?
Looking at this network diagram, the idea is for AS6500 (each router is in its own AS) to steer traffic through AS65001, rather than AS65002, for 100::/64. The most common method to trying to accomplish this is AS65000 can prepend its own AS number on the AS Path Multiple times. Increasing the length of the AS Path will, in theory, cause a route to be less preferred.
In this case, suppose AS65000 prepends its own AS number on the AS Path once before advertising the route towards AS65001, and not towards AS65002. Assuming there is no link between AS65001 and AS65002, what would we expect to happen? What we would expect is AS65001 will receive one route towards 100::/64 with an AS Path of 2 and use this route. AS65002 will, likewise, receive one route towards 100::/64 with an AS Path of 1 and use this route.
AS65003, however, will receive two routes towards 100::/64, one with an AS Continue reading
Today's Network Break covers IBM's new 2nm chip process, Juniper's first step toward a SASE offering, whether secondary markets for network gear might be an option for companies dealing with supply chain shortages, and more tech news.
The post Network Break 332: Juniper Teases SASE Offering; IBM Gets Small With 2nm Chip appeared first on Packet Pushers.