Shashank Bhandari – Best DevOps

Final Assignment – Shashank

Shashank Bhandari — Sat, 18 Jun 2022 09:42:49 +0000

What is SRE? – 3-4 Lines
A site reliability engineer (SRE) creates a bridge between development and IT operations by taking on the tasks typically done by operations. Instead, such tasks are given to these types of engineers who use automation tools to solve problems by creating scalable and reliable software systems.
5 Action items to perform to transform from Ops to SRE
Continuous integration and continuous delivery
Monitoring
Incident response
Alerts
Top 10 SRE tools to be implemented
Monitoring: such tools include DataDog and Grafana
Incident management/on-call: such as PagerDuty
Project management and issue tracking: such as Jira and Confluence
Infrastructure orchestration: including Terraform and Ansible

Day 1 – Assignment 2 – Shashank

Shashank Bhandari — Thu, 16 Jun 2022 07:37:22 +0000

Write a POST with following contents on BEStdevOpsSchool.com

Define SRE in your own Words- 2 Lines
Answer : Is mainly concern about the uptime and reliability of the prod system and mostly works and develop software and automation around it.
Define 3-4 bullets points on migrating process of Ops to SRE?
Answer :
Automate repetitive task
Implement tooling
Think as a software developer while solving problem statements.
3 Character tics to identify Toil in SRE
Answer :
Repetitive manual work.
Alerts which comes and go automatically with out any actions.
SLO/SLA not set properly.
1 line explanation of SLI – SLO and SLA
Answer :
SLI – Direct measurement of a service’s behavior
SLO – Defined time system is able to service after checking SLI’s. Internal agreement.
SLA – Is agreement between service provider and customer for the up time of service. Usually lower than set SLO.

Pre-test Solved (Shashank)

Shashank Bhandari — Thu, 16 Jun 2022 04:08:42 +0000

Q1 – What are the differences between SRE and DevOps?
Answer – DevOps – Development and operation work which is mainly involved in both the phases to reduce time of the over all SDLC.
SRE – Is mainly concern about the uptime and relibility of the prod system and mostly works and develop software and automation around it.

Q2 – What SRE team is responsible for?
Answer : To manage the Uptime of the production systems.

Q3 – What is an error budget?
Answer : Provide a matric which tells the unreliability of the prod services.

Q4 – What are MTTF (mean time to failure) and MTTR (mean time to repair)? What these metrics help us to evaluate?
Answer : MTTF measures the average amount of time a non-responsive service takes before it goes down completely.
MTTR – Average time a service takes to recover from a failure.

Q5 – What is the role of monitoring in SRE?
Answer : Monitoring is very important for SRE starting from the early detection of failure and take action once failure is detetcted.

Q6 – How do you differentiate between process and thread?
Answer : A program in running state is a process and thread is a sub-set/segment of the running program.

Q7 – What activity means Reducing Toil?
Answer : Anything which machine can do instead of an human is used for reducing toil example automation.

Q8 – Have you ever heard of SLO? If yes then explain.
Answer : Yes, service level objective is an agreement within an SLA between service provider and a customer.

Q9 – Enlist all the Linux signals you are aware of
Answer : SIGKILL, SIGSYS

Q10 – What is observability?
Answer : Monitoring system internal state.