How to ask questions in operation and maintenance interview?

How to ask questions in operation and maintenance interview?

Source: DevOpSec Official Account
Author: DevOpSec

As our roles on the team change or our skills improve, we may interview Ops candidates.

Let me introduce from four aspects what questions I usually ask as an operation and maintenance interviewer.

The four aspects of interview questions are suitable for high, middle and low-level positions, and some questions can be asked selectively to determine the position and salary that the candidate should match based on the situation that the candidate has mastered.

These four aspects also apply to other positions.

If you need interview question templates for operation and maintenance related positions, please follow the official account: DevOpSec, and 面试get a reply.

1. Knowledge level

The knowledge level must be passed, and the high school and low level are determined according to the level of mastery

1. linux/shell/grep/awk/sed
2. JVM tuning
3. Database/cache/Hadoop ecology/elk
4. TCP/IP\HTTP protocol? Detailed process of a web request?
5. Python/django/go
6. saltstack/ansible/automated
7. containerized/docker/k8s
8. "Deployment and release methods (pre-release, grayscale, blue-green, how to achieve smooth online, etc.), business architecture (HA, LB, easy maintenance), operation and maintenance security (port, fw, tightening of entrance and exit ip, border security , hids), operation and maintenance tips (restart, expansion, cut db), common means of research and development: robustness principle, current limiting, fusing, cache
9. "High system load troubleshooting process (tools, monitoring, ideas)?
   Specifications: fault handling process (review), emergency plan, cmdb, various specifications (dns, nginx, modules, etc.), ITIL understanding"
10. Monitoring (basic monitoring, business monitoring, component monitoring, etc.), alarm handling process

2. Experience level

Look at the role in the project, focus on project management, closed-loop work ability, and determine high school and low school according to work experience and the answers to the following questions

1. What platforms have you developed to talk about?
   What is the design, function and launch time of the platform?
   How do you work with team members?
2. List 3 difficult problems encountered in the platform development process, how to solve them respectively?
3. What effect did the platform achieve after its launch?
   What is your biggest gain through this platform development?

3. Ability level

It mainly examines his communication, sense of responsibility, risk awareness, initiative, etc., and decides whether he is high, low or high according to the answer to the questions.

1. Talk about an example of your recent cross-departmental or intra-departmental collaboration? How do you let other people or the other party get your idea? (coordinating tasks, planning)
   Have you encountered any problems during this process? How did you solve it? How did the final task go?
2. Through "experience - development platform to see its responsibility or participation in the project"? What are your expectations and career plans for this position? (judging their self-awareness, personal growth expectations, and self-responsibility)
3. "Tell me an example of your change, and talk about the detailed process? (Test, pre-release, grayscale, full volume) How do you ensure that there are no problems? (dubble check, grayscale, monitoring) What to do if something goes wrong? (Backup , recovery plan)
4. Have you ever thought that you have done a good job, but you are said to be worthless or unaffirmed in front of the leader? How do you deal with it? (You already have a lot of tasks, but the leader still assigns you tasks, how do you do it?)

Fourth, the power level

It is mainly to examine his continuous learning, whether he likes challenging work, and whether he hates repetitive work. According to the answer to the question, the high school and the low school are determined

1. What books have you read in the past month, choose one and tell us about your understanding?
   Has the latest new technology been applied at work?
2. In our work, we often encounter tasks that we are not familiar with or do not know how to start. Can you tell me an example of how you dealt with such tasks? How did
   you complete this task and what was the final result?
   What is the joy in dealing with these kinds of problems for you? What is trouble?
3. We all know that there is often a lot of repetitive work in work. Can you tell me an example of how you deal with repetitive work? (negative star)