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Which command is used to monitor kernel logs in real-time in Ubuntu?

Anonymous Quiz

69%

Use 'dmesg -w'

17%

Run 'kernellog monitor'

11%

Type 'watchkernel'

Use 'realtime-klog'

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By updating the container’s Dockerfile

How can a developer override environment variables in a running OpenShift container?

Anonymous Quiz

47%

By editing the pod directly

26%

By using the oc set env command

21%

By modifying the ConfigMap only

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258 voters2.49K views09:30

We can't be certain, it depends on the permissions of the parent folder

You are logged in as a normal user and you see a file with 444(-r--r--r--) permission. Can you delete it with the `rm` command?

Anonymous Quiz

29%

10%

Yes, can delete it without a problem

56%

No, we don't have the proper permissions

We can delete it only from the GUI but not from CLI.

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278 voters2.35K views09:30

🌎Ever wondered how typing examplel.]com into your browser magically loads the website?💡

The answer is DNS (Domain Name System) - a crucial technology that translates human-readable domain names into IP addresses so computers can communicate. ✅

How It Works

❓

🌀 User enters a URL - The browser checks its local cache for
the IP address.

🌀 ISP's DNS cache check - If found, it's returned instantly.

🌀 Root Name Server Query - If not cached, the ISP queries a
root server.

🌀 TLD Name Server Query - Identifies the relevant name
server (.com, net, etc.).

🌀 Authoritative Name Server - Retrieves the exact IP address
for the domain.

🌀 IP address returned - The ISP's DNS caches it for future use.

🌀 Browser connects to the website using the obtained IP.

Why is DNS Important?🤔

🟢Boosts internet efficiency - Quick access to websites.
🟢Enhances security - DNS filtering helps block malicious sites.
🟢Improves redundancy - DNS caching speeds up browsing.

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Azure_1742661297.pdf

8.2 MB

#Azure

A practical guide to Azure Devops

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Applications inside the containers accept configuration parameters in the form of environment variables. These variables can tell the app to listen on a specific port but you can't use a specific password.

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Amit_Saha_Practical_Go_Building_Scalable_Network_and_Non_Network.pdf

Photo

1.9 MB

#Book
#Go

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Activate default VM machine

Following Docker command: docker push user_name/repository_name is used to:

Anonymous Quiz

Commit changes done in a Docker image

79%

Push changes done in an docker image into Docker Hub

Build an image

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266 voters2.34K views09:30

Forwarded from DevOps(Document Repository)

💥به گروه دواپس داک بپیوندید.💥

🌀

🔜

@DevopsDocGp

🔙

🌀

📌رفع چالش های فنی
📌مشاوره با متخصصین حوزه
📌یادگیری نکات اموزنده با همراهی کامیونیتی های همکار
📌اطلاع از وبینار ها، فرصت های شغلی و ... مربوطه سازمان ها.

🌀

🔜

@DevopsDocGp

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Use 'cat /etc/ubuntuversion'

Which command is used to check the version of Ubuntu installed?

Anonymous Quiz

62%

Run 'lsb_release -a'

25%

10%

Type 'ubuntu_version_check'

Use 'ver_ubuntu' command

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310 voters2.1K views09:30

🌎

Network Attacks

💥

🔴Man-in-the-Middle (MITM) Attack - Attackers intercept communication between two parties to steal or manipulate data.

🔴Rootkits - Malicious software that gives attackers deep
system access while staying undetected.

🔴DDoS (Distributed Denial of Service) - Overwhelms a network or service with massive traffic to cause downtime.

🔴IP Spoofing - Faking an IP address to impersonate a trusted
source and bypass security measures.

🔴Phishing Attacks - Deceptive emails or messages trick users
into providing sensitive information.

🔴Ransomware - Malware that encrypts files and demands
payment for decryption.

🔴Zero-Day Exploits - Attacks targeting software
vulnerabilities before a fix is available.

🔴Session Hijacking - Attackers take control of a user's
session to access accounts or sensitive data.

🔴DNS Spoofing - Redirecting users to fraudulent websites to
steal information.

🔴Packet Sniffing - Capturing data packets to extract
confidential information.

🔴SQL Injection - Injecting malicious SQL code to manipulate databases.

🔴Trojan Horses - Malware disguised as legitimate software
to gain unauthorized access.

🔴Brute Force Attacks - Repeated attempts to guess login
credentials.

🔴Cross-Site Scripting (XSS) - Injecting malicious noscripts
into websites to Target users.

🟢

How to Stay Protected?

✅Use encryption (VPNs, SSL/TLS)
✅Keep software and firmware updated
✅Implement strong authentication (MFA)
✅Monitor and filter network traffic
✅Educate users on cybersecurity best practices

#Security

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