Site Reliability Engineer 2 Interview Questions and Answers

Updating manifests or deployments using ArgoCD involves making changes to the Git repository and letting ArgoCD automatically sync the changes to the cluster.

• Make necessary changes to the manifests in the Git repository.

• Commit and push the changes to the repository.

• ArgoCD will automatically detect the changes and sync them to the cluster.

• Monitor the sync process and ensure that the deployment is successful.

GitOps is better than normal strategy as it allows for declarative configuration, version control, automated workflows, and easier collaboration.

• Declarative configuration: GitOps uses declarative configuration stored in Git repositories, making it easier to manage and track changes.

• Version control: GitOps leverages Git's version control capabilities to track changes, rollback to previous versions, and ensure consistency.

• Automated workflows: GitOps enables automated deployment...read more

To design highly available scalable and secure infrastructure, we need to focus on redundancy, automation, monitoring, and disaster recovery.

• Use load balancers to distribute traffic across multiple servers

• Implement auto-scaling to handle sudden spikes in traffic

• Use multiple availability zones to ensure high availability

• Implement security measures such as firewalls, encryption, and access controls

• Regularly monitor the infrastructure for performance and security issues

• Implement...read more

Linux file system commands and basics

• File system hierarchy standard (FHS)

• Basic file system commands like ls, cd, pwd, mkdir, rmdir

• File permissions and ownership (chmod, chown)

• Disk space management (df, du)

• File manipulation commands like cp, mv, rm

• Understanding inodes and file system types (ext4, xfs)

• Mounting and unmounting file systems (mount, umount)

Kubernetes svc, roles, and rolebindings are key components for managing access control and network communication within a Kubernetes cluster.

• Kubernetes svc (service) is an abstraction that defines a logical set of pods and a policy by which to access them.

• Roles are used to define permissions within a namespace, specifying what actions a user or group can perform.

• Rolebindings are used to bind roles to subjects, such as users or groups, granting them the defined permissions.

• Exa...read more

Linux commands are used to interact with the operating system through the command line interface.

• Commands are case-sensitive

• Most commands have options and arguments that can be used to customize their behavior

• Common commands include ls (list files), cd (change directory), mkdir (make directory), rm (remove files), and more

Hard links and soft links are two types of links used in file systems.

• A hard link is a direct reference to a file on the disk, while a soft link is a pointer to the file's location.

• Hard links have the same inode number as the original file, while soft links have a different inode number.

• Deleting the original file does not affect hard links, but it breaks soft links.

• Hard links can only be created within the same file system, while soft links can point to files on different fil...read more

A join query in SQL is used to combine rows from two or more tables based on a related column between them.

• Use JOIN keyword to specify the tables to be joined

• Specify the columns to be joined on using ON keyword

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN