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Deep @Deep_coder_twt

Devops Learner | Learning in Public Joined July 2025
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Deep @Deep_coder_twt

9 hours ago

Day 6 of #100DaysOfDevOps ✅ Mixed-up production files? Fixed it without breaking anything: SSH to prod (banner@stapp03) find files owned by user siva cp --parents → preserve folder structure Verified counts & ownership #Linux #SysAdmin #DevOps

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Deep @Deep_coder_twt

a day ago

Day 7 of #100DaysOfDevOps ✅ Generated SSH keys (ssh-keygen -t rsa -b 4096) Copied to sudo users via ssh-copy-id Verified login w/o password Fixed .ssh & authorized_keys perms #Linux #DevOps #SSH #Automation

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Deep @Deep_coder_twt

2 days ago

Day 6 of #100DaysOfDevOps ✅ Installed cronie & set up a test cron job to write "hello" every 5 mins. Lessons: Cron runs per user; root crontab ≠ normal user */5 * * * * = every 5 mins Automation = fewer errors, more reliability #DevOps #Linux #LearningInPublic

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Deep @Deep_coder_twt

3 days ago

Day 5/100 – SELinux 🛡️ Today I: ✅ Installed SELinux packages ✅ Disabled it in config (no reboot yet) ✅ Prepped server for future policy testing Takeaway: Security isn’t just “enable/disable”. It’s about timing, validation & minimizing risk. #100DaysOfDevOps #Linux #DevOps

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Deep @Deep_coder_twt

3 days ago

Day 4 of #100DaysOfDevOps Created a service user on Linux without a home dir. Small task, big lesson: ✅ Correct server ✅ Least privilege ✅ Clean & secure It’s the small, precise actions that keep infra secure & scalable. 💻🔧 #DevOps #Linux #Automation #Security

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Deep @Deep_coder_twt

4 days ago

Day 4 of #100DaysOfDevOps ✅ Task: Make a backup script executable. Lesson: chmod a+x ≠ enough. Scripts need read + execute. ✅ Correct fix → chmod 755 zurl.co/1rWaB (rwxr-xr-x: owner full, others read+exec) Don’t just run commands. Understand why. #DevOps #Linux

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Deep @Deep_coder_twt

a week ago

Day 15 ✅ Learned branch cleanup (delete after merge) Understood rebasing for clean commit history Git history now makes sense Merge vs Rebase → which side are you on? #Git #DevOps #VersionControl #LearningInPublic

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Deep @Deep_coder_twt

a week ago

Day 14 ✅ Learned Git branching 🌿 Merge requests = collaboration guardrails Version control = teamwork philosophy 💡 #Git #DevOps #Collaboration #LearningInPublic

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Deep @Deep_coder_twt

a week ago

Day 13 ✅ Practiced git add, commit, push Learned how to init projects with git init Finally feeling the Git rhythm 🎶 #Git #DevOps #VersionControl #LearningInPublic

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Deep @Deep_coder_twt

a week ago

Day 12 ✅ Learned Git basics Setup local + remote repositories Version control now feels real 🔥 Question: GitHub, GitLab, or Bitbucket → which one’s your favorite? #Git #DevOps #VersionControl #LearningInPublic

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Deep @Deep_coder_twt

2 weeks ago

Task: Create user javed with a non-interactive shell 👉 Why? Service accounts (backup/monitoring) don’t need login. Leaving shells open = security risk 🚨 Cmd: sudo useradd -s /sbin/nologin javed Result: “This account is currently not available.” ✅ #Linux #DevOps #Security

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Deep @Deep_coder_twt

2 weeks ago

Day 3 #100DaysOfDevOps 🚀 Disabled direct root SSH login on all app servers. Takeaways: 🔑 /etc/ssh/sshd_config = the SSH rulebook 🔑 sshd -T shows what’s really running 🔑 Restarting sshd applies changes Why it matters: accountability > convenience. #DevOps #Linux #Security

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Deep @Deep_coder_twt

2 weeks ago

Day 11 ✅ Version Control with Git Keeps code history Enables collaboration Branch → merge → rollback Git = DNA of modern software #Git #DevOps #VersionControl #LearningInPublic

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Deep @Deep_coder_twt

2 weeks ago

🚀 Day 3 of #100DaysOfDevOps Task: Group-based access control on App servers ✔ Create group nautilus_noc ✔ Ensure user stark exists ✔ Add user to group 💡 Tip: Use getent group <name> to check if a group exists before creating it #DevOps #Linux #Automation #SysAdmin #Cloud

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Deep @Deep_coder_twt

2 weeks ago

Day 2 of #100DaysOfDevOps 🐧 with @KodeKloudHQ Task: Create a temp Linux user that expires automatically. 👉 Why it matters: Short-term contractors/testers don’t need permanent access Old accounts = security risk 🚨 useradd -e makes cleanup automatic #Linux #DevOps #Security

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Deep @Deep_coder_twt

2 weeks ago

Day 2 of #100DaysOfDevOps 🐧 with @KodeKloudHQ ✅ Task: Create custom Apache user 👉 Learned: Add dedicated apache user Check /etc/passwd Avoid running web servers as root (security risk 🚨) Small tasks, big security impact 🔒 #Linux #DevOps #Apache

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Deep @Deep_coder_twt

2 weeks ago

Day 10 ✅ Networking essentials (IP, ports, protocols) Mastered secure remote access with SSH 🔑 Now I can manage servers from anywhere 🌍 #Linux #SSH #Networking #DevOps #LearningInPublic

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Deep @Deep_coder_twt

2 weeks ago

Day 1 of my #100DaysOfDevOps journey 🐧 with @KodeKloudHQ ✅ Task: Create a Linux user with a shell 👉 Learned: useradd -s /bin/bash <username> How /etc/passwd stores user info Why shells matter for usability & security #DevOps #Linux #100DaysOfDevOps

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Deep @Deep_coder_twt

2 weeks ago

Just started #100DaysOfDevOps journey with @KodeKloudHQ 🎉 Why I’m doing this: ⚡ Daily hands-on tasks (no boring lectures) ⚡ Build a public DevOps portfolio ⚡ Work with real tools (Git, Docker, K8s, CI/CD, IaC) ⚡ Get interview-ready stories #DevOps #Cloud #100DaysOfDevOps

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Deep @Deep_coder_twt

2 weeks ago

Day 9 ✅ Advanced shell scripting concepts Learned the power of environment variables (PATH, HOME, USER) Automation just got more dynamic ⚡ #Linux #DevOps #ShellScripting #LearningInPublic

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