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Rakesh Jain

@devops_tech

13 Oct

Copying files and directories remotely.

Keeping Linux files and directories in sync.

Everything about "rsync"

A Thread 👇

What Is Rsync?

Rsync, or Remote Sync, is a fast, versatile and free command-line tool that lets you transfer and sync files and directories to local and remote destinations in an efficient and secure way. .

Why use Rsync?

When copying or moving large no. of files using tools like cp and mv may leave ur data in inconsistent state with part of it still in the original location and part of it in the target destination in case of any interruptions.

Read 29 tweets

Rakesh Jain

@devops_tech

9 Oct

These days we are hearing a lot about #web3.

What's that?

A short thread 👇

What was web1 or web?
The very first stage of development on the World Wide Web where only simple static websites used to exist.

Those were the times when Personal web pages (mostly static pages) used to be hosted on ISP-run web servers, or on free web hosting services.

@Wikipedia

What is web2?

Today's internet is all about web2. As per @Wikipedia Web 2.0 refers to websites that emphasize user-generated content, ease of use, participatory culture and interoperability for end users where websites and apps allow anyone to create content and share.

Read 5 tweets

Rakesh Jain

@devops_tech

9 Oct

Kubernetes security best practices in short -

A Thread 👇

1. Keep the Kubernetes cluster up to date.
2. Ensure That Only Authorized Images are Used in Your Environment
3. Limit Direct Access to Kubernetes Nodes
4. Create Administrative Boundaries between Resources

5. Keep Secrets Secret!
6. Define Resource Quota
7. Implement Network Segmentation
8. Apply Security Context to Your Pods and Containers
9. Restrict API access.
10. Restrict SSH access.

Read 6 tweets

Rakesh Jain

@devops_tech

9 Oct

Linux Networking Tools -

ss, nmap, dig, netcat, ping, tcpdump, socat, top, ethtool

A Thread 👇

SS -

ss command is a tool that is used for displaying network socket related information on a Linux system.

nmap -

Nmap is short for Network Mapper. It is an open-source Linux cmd-line tool that is used to scan IPs & ports in a nw & to detect installed apps. Nmap allows nw admins to find which devices r running on their nw, discover open ports & services, and detect vulnerabilities.

Read 12 tweets

Rakesh Jain

@devops_tech

7 Oct

SSL Decoded!

Everything you need to know about Secure Socket Layer.

A Thread 👇

What is SSL ?

It’s a protocol for encrypting and securing communications that take place on the Internet. It's now replaced by an updated protocol called TLS (Transport Layer Security) some time ago.

The main use case for SSL/TLS is securing communications between a client and a server, but it can also secure email, VoIP, and other communications over unsecured networks.

Read 23 tweets

Rakesh Jain

@devops_tech

7 Oct

I rarely use password login. And many folks out there even today aren't sure about ssh keys and their usage.

Everything about SSH Keys.

A Thread 👇

What is SSH?

SSH is a secure protocol used as the primary means of connecting to Linux servers remotely. It provides a text-based interface by spawning a remote shell. After connecting, all commands you type in your local terminal are sent to d remote server and executed there.

Today, the SSH protocol is widely used to login remotely from one system into another, and its strong encryption makes it ideal to carry out tasks such as issuing remote commands and remotely managing network infrastructure and other vital system components.

Read 27 tweets

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