pasham – Best DevOps

pasham — Sat, 18 Jun 2022 10:05:43 +0000

Q = What is SRE?

A = SRE is a software approach to deal with operations, application monitoring, monitoring reliability. SRE main goal is to keep application reliable. SRE works closely with Developers to build reliable softwares.

Q = Action items to perform to transform from Ops to SRE

A = Work with development teams to build efficient softwares

Identify daily tasks

Find how it can be automated
Write down an automation

Q = Top10 SRE tools to be implemented

A = kubernetes, jenkin, rundeck, ansible, terraform, python, datadog, grafana, prometheus, jira, nginx

Assignment2

pasham — Thu, 16 Jun 2022 07:42:38 +0000

Define SRE in your own Words-

SRE is a software approach to take care of operations and application reliability

Define 3-4 bullets points on migrating process of Ops to SRE?

Identify daily tasks
Work on approaches to solve it
Write an automation for it

3 Charactertics to identify Toil in SRE

automatable, heavy load, reptitive

1 line explanation of SLI – SLO and SLA

SLA – service level agreement SLO – service level objectives SLI – service level indicators
SLI – The actual metric value that the system currently provides
SLO – THe metric value that we try to adhere in order to maintain system stability within organization
SLA – The metric value which client has agreed to and cannot be violated.

PSRE assignment

pasham — Thu, 16 Jun 2022 04:05:35 +0000

Q1 – What are the differences between SRE and DevOps?
Ans – Devops focuses on faster deployments, how to automate releases
SRE focuses on application reliability, how to monitor applications
Q2 – What SRE team is responsible for?
ANS SRE team is responsible for application reliability, incident management, host capacity checks, application monitoring,
automation to reduce toil
Q3 – What is an error budget?
ANS Error budget is how much percentage of application unavailablity is acceptable
Q4 – What are MTTF (mean time to failure) and MTTR (mean time to repair)? What these metrics help us to evaluate?
ANS Mean time to repair is time taken to resolve the incident
Mean time to failure could be time taken to understand the cause of failure
Q5 – What is the role of monitoring in SRE?
ANS Monitoring helps us detect if any application is not healthy or if it is flapping frequently. This helps us identify
errors prior to cutomers and work on it to resolve faster
Q6 – How do you differentiate between process and thread?
ANS Threads are light weight operations compared to process
Q7 – What activity means Reducing Toil?
ANS Automation
Q8 – Have you ever heard of SLO? If yes then explain.
ANS SLO – service level objective
These are basically the objectives we make with client. For ex, we can have an uptime of 99% as SLO
if application is not available for 99% of the time, we say it is an sla breach.
Based on the impact, we have to pay the cutomer
Q9 – Enlist all the Linux signals you are aware of
ANS host, ip, ping, curl, ls, chmod, sed, nslookup, telnet, ssh etc…
Q10 – What is observability
ANS Observability helps is quickly identifying the reason for errors in production.
Metrics, logs, traces help in giving us better observability