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README.md
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README.md
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1. [Ansible](#ansible)
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1. [Containers](#containers)
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1. [Docker](#docker)
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1. [Kubernetes](#kubernetes)
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1. [Python](#python)
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1. [Prometheus](#prometheus)
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1. [Git](#git)
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@ -41,11 +42,13 @@
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* How to install Jenkins?
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* How to install a plugin?
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* How to install an agent?
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* Explain CI/CD and how you implemented in Jenkins
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###### Intermediate
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- What type of jobs there are? what is the advantage of each type?
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- What ways are you familiar with to notify users on build results?
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* What type of jobs there are? what is the advantage of each type?
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* What ways are you familiar with to notify users on build results?
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* How to secure Jenkins?
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###### Advanced
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@ -64,23 +67,24 @@
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###### S3 - beginner
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- Explain what is S3 and what is it used for
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- What is a bucket?
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- True or False? a bucket name must be globally unique
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- What objects in S3 consists of?
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- Another way to ask it: explain key, value, version id and metadata in context of objects
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- Explain data consistency
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- Can you host dynamic websites on s3? what about static websites?
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* Explain what is S3 and what is it used for
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* What is a bucket?
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* True or False? a bucket name must be globally unique
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* What objects in S3 consists of?
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* Another way to ask it: explain key, value, version id and metadata in context of objects
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* Explain data consistency
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* Can you host dynamic websites on s3? what about static websites?
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* What security measures have you taken in context of S3?
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###### CloudFront
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- Explain what is CloudFront and what is it used for
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- Explain the following
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- Origin
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- Edge location
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- Distribution
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- What delivery methods available for the user with CDN?
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- True or False? object are cached for the life of TTL
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* Explain what is CloudFront and what is it used for
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* Explain the following
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* Origin
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* Edge location
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* Distribution
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* What delivery methods available for the user with CDN?
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* True or False? object are cached for the life of TTL
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###### EC2 - beginner
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@ -188,6 +192,8 @@ Playbook – One or more plays. Each play can be executed on the same or differe
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Role – Ansible roles allows you to group resources based on certain functionality/service such that they can be easily reused. In a role, you have directories for variables, defaults, files, templates, handlers, tasks, and metadata. You can then use the role by simply specifying it in your playbook.
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```
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* You want to run Ansible playbook only on specific minor version of your OS, how would you achieve that?
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* Write a task to create the directory ‘/tmp/new_directory’
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```
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@ -329,6 +335,16 @@ you with more options/features compared to Docker Hub. One example is
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Swarm management which means you can create new swarms in Docker Cloud.
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```
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## Kubernetes
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* What is Kubernetes?
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* Why Docker isn't enough? Why do we need Kubernetes?
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* Describe the architecture of Kuberenets
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* How do you monitor your Kuberenets?
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* What is kubectl? How do you use it?
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* What is kubconfig? What do you use it for?
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* How do you create users?
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## Python
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@ -413,7 +429,12 @@ Alert manager is responsible for alerts ;)
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###### beginner
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* What is the difference between `git pull` and `git pull`?
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* what is 'working tree'? what is 'staging area'?
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* How do you resolve git conflicts?
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* What is the difference between `git reset` and `git reverse`?
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* In what situations are you using `git rebase`?
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* What branching strategies are you familiar with?
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* Explain octopus strategy
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## Scenarios
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@ -422,3 +443,4 @@ require from you to design, plan and implement environments with different const
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and considerations.
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* [Elasticsearch & Kibana on AWS](scenarios/elk_kibana_aws.md)
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* [Ansible, Minikube and Docker](scenarios/ansible_minikube_docker.md)
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scenarios/ansible_minikube_docker.md
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scenarios/ansible_minikube_docker.md
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## Ansible, Minikube and Docker
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* Write a simple program in any language you want that outputs "I'm on <HOSTNAME>"
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* Write a Dockerfile which will run your app
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* Create the YAML files required for deploying the pods
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* Write and run an Ansible playbook which will install Docker, Minikube and kubectl and then create a deployment in minikube with your app running.
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- How you apply security policy for access control
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- How you transfer the logs from the app to ELK
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- How you deal with multi apps running in different regions
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## Solution
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One Possible solution can be found [here](solutions/elk_kibana_aws.md)
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scenarios/solutions/elk_kibana_aws.md
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scenarios/solutions/elk_kibana_aws.md
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# Elasticsearch, Kibana and AWS - Solution
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This one out of many possible solutions. This solution is relying heavily on AWS.
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* Create a VPC with subnet so we can place Elasticsearch node(s) in internal environment only.
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If required, we will also setup NAT for public access.
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* Create an IAM role for the access to the cluster. Also, create a separate role for admin access.
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* To provision the solution quickly, we will use the elasticsearch service directly from AWS for production deployment.
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This way we also cover multiple AZs. As for authentication, we either use Amazon cognito or the organization LDAP server.
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* To transfer data, we will have to install logstash agent on the instances. The agent will be responsible
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for pushing the data to elasticsearch.
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* For monitoring we will use:
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* Cloud watch to monitor cluster resource utilization
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* Cloud metrics dashboard
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* If access required from multiple regions we will transfer all the data to S3 which will allow us to view the data
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from different regions and consolidate it in one dashboard
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