In this post, I want to congratulate you as you are one out of the first 30K Subscribers of KnowledgeIndia. We have just reach the number of 30K subscribers and it is growing. It means a lot when you write appreciation in comments (though it doesn't happen all the time).
We are currently working on new video tutorials and hopefully will have a lot for you on upcoming Diwali as a gift-pack. You can help us do more by sharing our videos with your friends, writing about it on LinkedIn/Facebook/Twitter if it has helped you learn a concept.
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In this post I want to inform you about some of the new activities I am trying to do.
In order to make you equipped with more practical scenarios, I have decided to start #AWS #Question #Scenario series in which I would post a question on LinkedIn and Youtube community page. After few hours or next day, I shall reply as well. All are invited to participate and polish the understanding further. I request you to connect with me on LinkedIn - https://www.linkedin.com/in/knowledgeindia
Also, the YouTube feed is great and it is enabled for our channel now. If you look at your Subscriptions in Youtube mobile app, you can see content from KnowledgeIndia. Or, you can also visit - https://www.youtube.com/user/knowledgeindia/community
A new series of video tutorials is coming which would be focused on practical scenarios only. Looking forward to hear from all of you. Check out the videos added recently and kindly help us by sharing the videos and content on LinkedIn.
First of all, I want to thank all the viewers who have shared our videos and spread information about YouTube Channel. We just crossed 4,000 subscribers. This number is not very big compared to the appreciation which you people write in comments.
Here are few important things for our serious learners:
Blog is the best form to combine different forms of content (video, audio, text etc.) in a logical order. Going forward, you will see more activity on the blog and I would recommend everyone to learn the topics from posts on the blog. So, please SUBSCRIBE to the blog now (see right side) and do the verification once email comes to your mailbox. Check SPAM as well.
If you are subscribed to YouTube Channel, its good. But, I would request to go and click the BELL icon so that you receive email alerts of all the new videos. An example is shown here --
Facebook, Twitter & LinkedIn are great platforms to share smaller things like any good article or really good AWS post (with lots of examples). So, I would be sharing those items on these social platforms. Please get connected on these - Links are given at the top.
Many of the viewers post lot of custom doubts on YouTube comments. I spend considerable amount of time answering all. Sadly, once the query gets answered I don't even get an acknowledgement. May I request you to SHARE and LIKE if something is helpful to you.
I am also thinking to setup a FORUM where we all could discuss and comment. Suggestions welcome!!
Please look at the AWS video playlists, the videos are put in a logical order in the playlists.
While posting doubts/questions, kindly look at the relevant video/blog post. Many of the times, your question would already be there in the comments (asked previously by someone else).
I am trying to cover the concepts and explain you with examples, but I also request you NOT to stop there. You should go ahead and read the AWS documentation for the specific topic and go deeper.
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Friends,
I got few questions related to RDS on this video tutorial
1. So when we create a read replica, can we have read replicas of different flavor from the primary, Mean to ask , If my primary is MYSQL , can i have one of the read replica's as aurora ? is that a good practice to have heterogeneous DBs like that ?
ANS: It is not possible to have different flavor for all. Only for RDS MySQL they allow to create Aurora as read-replica (this is because AWS wants adoption of Aurora to be more and easier). Also, Aurora is a good engineered version of MySQL. Good practice? - NO
2. The whole intention of creating the read replica is to divert or spread the read traffic evenly, after creating a read replica , does amazon take care of doing the work of balancing the load, or should we connect the respective created read replicas with our instances? i created one read replica , but dint know where to connect the created one to the instance .
ANS: When you create read replica you get a Endpoint for the same. You will have use this endpoint in your application to send all the READ traffic here. If you have multiple Read Replicas from the same RDS, you can use a custom Load Balancer in front of them as well.
3. Why is it mandate to enable the back up for read replicas?
ANS: There is no backup required for Read Replicas. All Read Replica DB instances are created as Single-AZ deployments
with backups disabled. All other DB instance attributes
(including DB security groups and DB parameter
groups) are inherited from the source DB instance, except as specified
below.
Important - The source DB instance must have backup retention enabled.
4. While creating a RDS DB, there is an option which says " Publicly accessible " yes or no , normally we keep the DB in the private subnet right ? can you help me with any case scenario where we will expose the DB to the public ?
ANS: "Publicly Accessible" attribute decides whether RDS would be accessible using a PUBLIC IP or not. There could be a case where you want to keep a DB in Public subnet and allow Publicly accessible so that one of your remote office location can upload data (there is no VPN suppose). In this case, in order to keep RDS secure, you will allow only one PUBLIC IP (of your remote office) in the Security Group of RDS.
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