DevOps

The database crashed without logs, but metrics show high memory consumption. How to diagnose the cause of the crash?

Name 3-5 tools from the basic Linux distribution for diagnosing server performance issues.

You enter the car and see LA=100. What are your actions?

Senior

Wildberries

What have you contributed to the company over three years of experience: what processes, tools, or technical improvements have you initiated?

Have you worked with bare metal infrastructure or only with the cloud?

How is your work organized: sprints or Kanban, how do you communicate task status, and what do you do when blocked?

What is Deployment and what is Service in Kubernetes?

Middle

Лига Цифровой Экономики

Name two most vivid impressions from working in DevOps: one positive, one negative.

Middle

СБЕР Тех

What is a replication factor in Kafka and how does min.insync.replicas work?

What is Kubernetes and why is it needed? What are the main components of a Kubernetes cluster?

Middle

СБЕР

Was the replica switch to master manual or automatic (Patroni)?

How to see which system calls are being executed by a running application?

Senior

VK

37. What is a MAC address? - A unique device address at the physical layer; - A protocol for converting IP addresses; - A method of data encryption in a network; - A way to connect a device to a network; 38. How to find out the IP address of a computer running Linux OS? - ifconfig; - ipconfig /all; - ip a; - cat /etc/netconfig; 39. Where are application logs stored in Linux OS? - /var/log/;

Intern

T1

26. How to find out the current working directory? - ll; - who; - uname -a; - pwd; 27. On the server, there is a directory containing a subdirectory, which in turn contains a file. You are the owner of everything recursively (/dir/dir/file), and the group is also yours. If you try to read the file with your user, the console returns a permission denied message. What is missing? - The x bit in one of the directories; - Root user rights; - Read permission for the file; - Possibly only if the file is executable; 28. What data streams do you know in Linux?

Intern

T1

Tell us about your stack and work experience

How can you incorporate the change (new law from the New Year) into production with minimal effort overnight?

Middle

Т-Банк

Where and how do you run the built application image?

What is the difference between security groups and routing tables in Yandex.Cloud?

How do you monitor disk subsystem load? What utilities do you use and what do you pay attention to?

Senior

VK

How does a container differ from a virtual machine? What are the advantages?