uncleflo
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Replicating Amazon Aurora MySQL DB Clusters Across AWS Regions - Amazon Aurora
Saved by uncleflo on July 24th, 2019.
You can create an Amazon Aurora MySQL DB cluster as a Read Replica in a different AWS Region than the source DB cluster. Taking this approach can improve your disaster recovery capabilities, let you scale read operations into an AWS Region that is closer to your users, and make it easier to migrate from one AWS Region to another. For each source DB cluster, you can have up to five cross-region DB clusters that are Read Replicas. When you create an Aurora MySQL DB cluster Read Replica in another AWS Region, you should be aware of some pitfalls.
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How are you guys handling QA environments on AWS? : aws
Saved by uncleflo on July 11th, 2019.
News, articles and tools covering Amazon Web Services (AWS), including S3, EC2, SQS, RDS, DynamoDB, IAM, CloudFormation, Route 53, CloudFront, Lambda, VPC, Cloudwatch, Glacier and more. Just a curiosity. At this point I've done: single staging environment for small teams, and that obviously doesn't work well beyond a couple; one off EC2 instances that just use docker to make a mini-replicated environment; cloudformation to spin up an entire, and yet smaller, version of our production; ngrok and just having our QA test directly. The area I'm interested to see how people are handling it is with respect to data. Are you replicating the full DB? Just using in memory and some seed data? Additionally, for those of you that have this (or have had one in the past), how did you guys set it up to be "pleasurable" to work with? By that I mean it not being some long winding rube goldberg machine that almost defeats the purpose of having a CI.
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Working with Amazon Aurora Global Database - Amazon Aurora
Saved by uncleflo on June 23rd, 2019.
Following, you can find a description of Amazon Aurora Global Database. Each Aurora global database spans multiple AWS Regions, enabling low latency global reads and disaster recovery from region-wide outages. An Aurora global database consists of one primary AWS Region where your data is mastered, and one read-only, secondary AWS Region. Aurora replicates data to the secondary AWS Region with typical latency of under a second. You issue write operations directly to the primary DB instance in the primary AWS Region. An Aurora global database uses dedicated infrastructure to replicate your data, leaving database resources available entirely to serve application workloads. Applications with a worldwide footprint can use reader instances in the secondary AWS Region for low latency reads. In the unlikely event your database becomes degraded or isolated in an AWS region, you can promote the secondary AWS Region to take full read-write workloads in under a minute.
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AWS - How to redirect database traffic to a new master on RDS after promoting a read replica? - Server Fault
Saved by uncleflo on June 23rd, 2019.
A lot of RDS's documentation about read replicas contains a magical step along the lines of "direct database traffic to the new master." For instance, their instructions on implementing failure recovery say: This talk about directing traffic glosses over what is actually a complicated step, though. If I were using EC2 instances to host my database, I could give them elastic IPs, use the public DNS address of the instance to address it (which resolves to its private IP from inside AWS), and then instantly swap my entire stack to the read replica by reassigning the elastic IP (and thus simultaneously reassigning the public DNS). I used this method happily back in the days when RDS was considered straightforwardly inferior to rolling your own database instance on EC2 by many DBAs. RDS instances still cannot have elastic IPs, though, so I cannot use this particular trick to magically redirect all my database traffic to a new instance when using RDS.
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AWS Marketplace: CentOS 7 (x86_64) - with Updates HVM
Saved by uncleflo on May 24th, 2019.
This is the Official CentOS 7 x86_64 HVM image that has been built with a minimal profile, suiteable for use in HVM instance types only. The image contains just enough packages to run within AWS, bring up an SSH Server and allow users to login. Please note that this is the default CentOS-7 image that we recommend everyone uses. It contains packages that are updated at points in time to include critical security updates.
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Cloud Architect (AWS & Azure) Masters Program Training |Simplilearn
Saved by uncleflo on May 12th, 2019.
Simplilearn’s Cloud Architect Master’s Program will build your Amazon Web Services (AWS) and Microsoft Azure cloud expertise from the ground up. You’ll learn to master the architectural principles and services of two of the top cloud platforms, design and deploy highly scalable, fault-tolerant applications and develop skills to transform yourself into an AWS and Azure cloud architect. Master the skillset of a cloud solutions architect
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Class patterns
Saved by uncleflo on April 8th, 2018.
There’s a special syntax construct and a keyword class in JavaScript. But before studying it, we should consider that the term “class” comes from the theory of object-oriented programming. The definition is cited above, and it’s language-independent. In JavaScript there are several well-known programming patterns to make classes even without using the class keyword. And here we’ll talk about them first. The class construct will be described in the next chapter, but in JavaScript it’s a “syntax sugar” and an extension of one of the patterns that we’ll study here.
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3 ways to define a JavaScript class
Saved by uncleflo on April 8th, 2018.
JavaScript is a very flexible object-oriented language when it comes to syntax. In this article you can find three ways of defining and instantiating an object. Even if you have already picked your favorite way of doing it, it helps to know some alternatives in order to read other people's code. It's important to note that there are no classes in JavaScript. Functions can be used to somewhat simulate classes, but in general JavaScript is a class-less language. Everything is an object. And when it comes to inheritance, objects inherit from objects, not classes from classes as in the "class"-ical languages.
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Using Access Control Rules - ServiceNow Wiki
Saved by uncleflo on March 26th, 2015.
An instance uses access control list (ACL) rules, also called access control rules, to control what data users can access and how they can access it. ACL rules require users to pass a set of requirements in order to gain access to particular data. The system searches for ACL rules that match both the object and operation the user wants to access. If there are no matching ACL rules for the object and operation combination, then the object does not require any additional security checks and the instance grants the user access to them. By default, the system provides ACL rules to restrict access to all database and configuration operations.
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None
Saved by uncleflo on July 18th, 2013.
To get started using Amazon Elastic Compute Cloud (Amazon EC2) Linux instances, complete the steps shown in the following table. You'll primarily use the AWS Management Console, a point-and-click web-based interface. You can also watch this short video to get started: How to Create a Red Hat Enterprise Linux EC2 Instance. For more information about Amazon EC2, see the Amazon EC2 product page.
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Virtual Private Server, VPS Hosting, Linux Vserver, Best Virtual Servers, Best VPS Provider DreamHost
Saved by uncleflo on May 16th, 2013.
Flexible: Scale up your performance as your website grows. Linux-VServer allows you to quickly scale vertically with no need to reboot. Add another virtual server instance in seconds (e.g. a low-resource VPS for chat). Reduced Costs: Only pay for the server performance you plan on needing. Dial in your CPU/RAM requirements and avoid paying for resources that you will not use. No Overage Fees: Bandwidth and disk capacity for your site are both unlimited! There is no need to worry about getting hit with surprise overage fees.
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