Category: Cloud

Amazon AWS Elastic Beanstalk Command Line Interface
To install Amazon AWS Elastic Beanstalk Command Line Interface (EB CLI), run
```
pip install awsebcli
```
To create a project.
```
mkdir serverok 
cd serverok
git init
eb init
```
To create servers in AWS, run
```
eb create
```
It ask some question, once you done, it shows URL like following

In this cause, the URL http://serverok-dev.us-west-2.elasticbeanstalk.com/ can be used to access my application.

To deploy an application, create a file, commit to git.

In few minutes, you will be able to see the file on your Elastic Beanstalk application url

http://serverok-dev.us-west-2.elasticbeanstalk.com/test.php

When you are done with it, you can terminate the environment with command
```
eb terminate
```
It will show in AWS Console > Elastic Beanstalk with info “Waiting for EC2 instances to terminate.”
January 2, 2018
Prevent an EC2 Instance getting Terminated by AutoScale

You may need to update software on an instance in Amazon EC2 Auto Scaling Groups, when this happens make sure you enable “Scale In Protection” or your instance can get deleted by Auto Scaling group.

There is also an option for Standby mode. This option is also helpful for updating software on an instance. When instance is in Sandby mode, it won’t serve any requests. If its “Scale In Protection”, it will serve traffic, you will be able to debug any issues on this instance.

To enable protection, go to

EC2 Console > AUTO SCALING > Auto Scaling Groups

Select your Auto Scaling group.

Click on instance you need to protect or set to standby. Then click on Actions, you have options to set the EC2 Instance in Standby mode or enable “Scale in Protection”

December 31, 2017
Delete Amazon S3 Bucket

To delete an Amazon S3 bucket, go to

Amazon Console > S3

Click on the bucket you need to delete. Then click on Delete button. You have option to empty the bucket if needed.

See Amazon S3

December 31, 2017
Amazon S3

Make Amazon S3 Bucket public

Enable Amazon Cloudfront CDN in WordPress

Install Amazon AWS awscli

Delete Amazon S3 Bucket

Amazon S3 CORS
Mount Amazon s3 on Linux
How to find Amazon S3 bucket size
Copy files from one Amazon S3 bucket to another

https://wasabi.com

December 31, 2017
Make Amazon S3 Bucket public
To make an Amazon S3 bucket public, you need to modify the bucket’s policy to allow public access.
- Go to the S3 console.
- Click on the bucket that you need to make public.
- Click on the Permissions tab.
- Scroll down to Bucket Policy and click Edit
You get a blank editor. Paste the following code and click save changes to make the bucket public.
```
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowPublicReadAccess",
      "Effect": "Allow",
      "Principal": "*",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::BUCKET_NAME_HERE/*"
    }
  ]
}
```
Replace BUCKET_NAME_HERE with your actual S3 Bucket name.

See Amazon S3
December 31, 2017
Amazon AWS (awscli) command line interface
awscli is a command line tool for Amazon AWS. To install, run
```
apt-get install python3-pip -y
```
If python 2, you need to install package python-pip.

Install awscli with pip
```
pip install awscli
```
You can find more details at

https://docs.aws.amazon.com/cli/latest/reference/

Once installed, you need to configure it
```
aws configure
```
To sync content of a folder to Amazon S3 bucket, run
```
aws s3 sync /opt/bitnami/apps/wordpress/htdocs/wp-content/uploads/ s3://your-bucket-name/wp-content/uploads/
```
Whitelist IP in AWS security group using awscli
Amazon AWS create key pair using awscli
AWS CloudFormation

See aws
December 31, 2017
serverless

Serverless is your toolkit for deploying and operating serverless architectures. Focus on your application, not your infrastructure.

https://www.serverless.com

https://openwhisk.apache.org/

December 25, 2017
Kubernetes
Easy Kubernetes setup on Ubuntu with microk8s
Kubeapps
https://kubernetes.io/docs/tutorials/hello-minikube/
Install Minikube in Ubuntu

kubectl
- kubectl
- Kubernetes scale a deployment
Google Kubernetes Engine
Free Online Labs
- https://labs.play-with-k8s.com
- Learn Kubernetes using Interactive Browser-Based Scenarios
December 25, 2017
Kubeapps

Kubeapps allows you to run bitnami applications in Kubernetes cluster.

December 25, 2017
aws
Amazon EC2
Amazon RDS
Amazon S3
- Amazon S3 CORS
AWS Price calculator
- https://calculator.s3.amazonaws.com/index.html
- https://www.ec2instances.info/
Free AWS Credit
- https://beamstart.com/deal/5000-aws-credits
To backup a folder to the Amazon S3 bucket, run
```
aws s3 cp --recursive /path/to/folder/ s3://BUCKET_NAME/NEW_FOLDER_NAME/ 
```
Example

To sync (download) a s3 bucket to your local computer, run
```
aws s3 sync --no-sign-request --region us-west-2 s3://BUCKET_NAME/ ./localpath/ 
```
To list all s3 buckets, run
```
aws s3 list
```
Example
```
root@server2 [~]# aws s3 ls
2016-04-30 09:15:38 bkjoe
2016-11-30 07:38:38 server2bc
root@server2 [~]# aws s3 ls s3://server2bc/
                           PRE 2017-12-22/
                           PRE monthly/
                           PRE weekly/
root@server2 [~]# 
```
December 24, 2017
Amazon ElastiCache

Amazon ElastiCache to run Redis or Memcached cluster on Amazon cloud.

You get some stats for your cache server/cluster.

You can connect to the Endpoint from your application. There is no authentication, you can protect your server by placing it inside private network/vpc.

December 23, 2017
Cpanel Server Behind NAT – Amazon EC2
When your cpanel server is behind nat, for example Amazon EC2 where you have an internal IP and External IP.

Go to

Home > Server Configuration> Basic WebHost Manager® Setup

Enter your servers internal IP where it ask for “The IPv4 address (only one address) to use to set up shared IPv4 virtual hosts.”.

Now login to Server using SSH and run
```
/scripts/build_cpnat
```
For an Amazon EC2 server with internal IP 172.31.26.120, i added the IP in WHM > Basic WebHost Manager® Setup

Run command /scripts/build_cpnat

That associate the IP with external IP address.
```
[root@ip-172-31-26-120 ~]# /scripts/build_cpnat
info [build_cpnat] 172.31.26.120 => 13.210.58.114
[root@ip-172-31-26-120 ~]#
```
This allow DNS and Apache to resolve external IP properly. With out running this command DNS server will just reply with servers internal IP address.
December 16, 2017