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grab a bowl ... 🌿🍯🔥💨

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author: 51n5337 & #Dab
mission: CompTIA Cloud+ Certification
brief: vocabs. brief. 6-troubleshooting.

…back

overview

6.0 troubleshooting ██████████ 12% 🐞🔧
“What can cause resource allocation failures?” (Answer: Service Quotas)
“What protocol issues IP addresses to instances?” (Answer: DHCP)
“What results from leaked credentials?” (Answer: Unauthorized Access)

“The master architect doesn’t fear failure—they designed the system to fail gracefully. Troubleshooting is just the art of listening to what the system is trying to tell you.”

Troubleshooting is a dance, not a battle.
Your new mantra: “Be curious, not furious.”

When everything’s breaking:

Now let’s get into the specifics with that ND-AF flavor…

6.1 Troubleshoot Deployment Issues 🚀

“Why won’t my beautiful creation come to life?”

- incompatibility
- misconfigurations: resource allocation, permission issues, oversubscription, sizing issues
- outdated component definitions
- deprecation of functionality
- outages: full, partial
- resource limits: api throttling, service quotas
- regional service availability

🧩 The Deployment Drama — Common Culprits

Symptom Feels Like Likely Culprits
“It worked on my machine!” 🤬 Trying to play a vinyl record on a CD player Incompatibility - Wrong OS, missing dependencies, version conflicts
“The system is gasping for air” 😮💨 Running a marathon in flip-flops Resource allocation & sizing issues - Not enough CPU/RAM, oversubscription
“The digital bouncer said no” 🚫 Showing up to the club not on the list Permission issues - Service accounts, IAM roles, API keys
“My GPS is stuck in 1999” 🗺️📟 Trying to use a MapQuest printout today Outdated components - Deprecated APIs, old VM images
“The whole neighborhood lost power” 🏘️⚡ When the entire cloud region has a bad day Regional outages & service availability

🎯 The #Dab Diagnostic Flow

1. SCOPE THE BLEED → Is it one instance? One AZ? The whole region?
2. CHECK THE VITAL SIGNS → CPU, memory, disk I/O, network throughput  
3. READ THE SYSTEM'S DIARY → Logs, metrics, traces
4. ASK "WHAT CHANGED?" → Recent deployments, config updates, traffic spikes
5. TEST ONE THING → Change one variable, observe, repeat

☕ Stellar Café Deployment Drama

Remember our favorite coffee chain? ☕✨

The Scene: Friday morning, smoothie delivery app won’t deploy. Orders are freezing. Karen is panicking.

The Investigation:

The Lesson: Sometimes the system isn’t broken—you just hit the invisible fences (service limits).

6.2 Troubleshoot Network Issues 🌐🕸️

“Why can’t we talk? Is it me? Is it you?”

- network service unavailability: dynamic host configuration protocol (DHCP), domain name system (DNS), network time protocol (NTP), netword address translation (NAT), hypertext transfer protocol (HTTP -- status codes)
  
[read more](/comptia-cloudplus/troubleshooting/1.html)
[about NAT](/comptia-cloudplus/troubleshooting/NAT.html)

- latency
- bandwidth/throughput issues
- network device misconfiguration
- protocol incompatibility
- protocol deprecations
- ip addressing issues: scope exhaustion, network overlap
- routing issues: missing routes, misconfigured routes
- switching issues: VLAN issues (misconfigured tags), access vs trunk ports
  
[more](/comptia-cloudplus/troubleshooting/VLAN.html)
[and more](/comptia-cloudplus/troubleshooting/VLAN-vs-access-control.html)
[and more](/comptia-cloudplus/troubleshooting/vxlan-sdn.html)

🧩 The Network Nervous System — Where Connections Break

Service When It Breaks Feels Like
DHCP 🏠 Can’t get an IP address Being homeless on the network
DNS 📞 Names don’t resolve to addresses The internet’s phonebook is missing pages
NTP ⏰ Time is out of sync Everyone showing up to the meeting at different times
Routing 🗺️ Packets get lost GPS sending you on a scenic tour of nowhere

🛠️ Your Network Toolbelt — The Digital Stethoscope

🎯 The Connectivity Checklist

START LOCAL → Can the instance reach itself? (localhost)
    ↓
GO NEARBY → Can it reach others in same subnet? 
    ↓
CHECK GATEWAY → Can it reach the router?
    ↓  
TEST EXTERNAL → Can it reach the internet?
    ↓
VERIFY RETURN TRIP → Can others reach it?

☕ Stellar Café Network Mystery

The Scene: New loyalty program can’t connect to payment service. Transactions failing.

The Investigation:

The Lesson: The network wasn’t broken—the permissions were whispering, not shouting.

6.3 Troubleshoot Security Issues 🛡️🔓

“Someone’s trying to crash the vibe.”

- cipher suite deprecations
- authorization issues: privilege escalation, unauthorized access
- authentication issues: leaked credentials
- software vulnerability issues
- unauthorized software

🧩 The Security Spectrum — From Oops to Attack

Security Level What Happened Feels Like
Oops 😅 Cipher suite deprecations Showing up with an expired ID
Uh-oh 😟 Authorization issues Having the key but not the right clearance level
Red Alert 🚨 Leaked credentials Your house keys posted on Twitter
Full Breach 💀 Privilege escalation The intern suddenly has CEO access

🎯 The Security Incident Response Flow

DETECT → Something feels wrong (metrics, logs, alerts)
    ↓
CONTAIN → Isolate the affected systems
    ↓  
INVESTIGATE → How did they get in? What did they touch?
    ↓
ERADICATE → Close the holes, remove the intruders
    ↓
RECOVER → Restore normal operations
    ↓
LEARN → How do we prevent this next time?

🔒 Zero Trust Mindset — The New Default

Old way: “Trust but verify”
New way: “Never trust, always verify”

Every request, every connection, every access attempt—verify everything, every time.

☕ Stellar Café Security Saga

The Scene: Unusual API calls from unknown locations. Database queries at 3 AM.

The Investigation:

The Lesson: Secrets management isn’t optional—it’s digital hygiene.

🌟 THE TROUBLESHOOTER’S CREED — #DAB’S PARTING WISDOM

  1. Start with the simplest explanation — It’s usually a typo, not a cosmic ray bit flip

  2. Change one thing at a time — If you change five things and it fixes, you learned nothing

  3. Document as you go — Your future self will thank you at 3 AM

  4. Embrace the learning — Every outage is a lesson wrapped in chaos

  5. Stay chill — Panic clouds judgment, calm reveals patterns

🎯 EXAM VIBE CHECK

They’re not testing if you can memorize error codes. They’re testing if you can think like a cloud architect under pressure.

Typical exam questions:

Your advantage: You’re not just memorizing—you’re understanding the system’s heartbeat.

“The master troubleshooter doesn’t just fix what’s broken—they learn why it broke, and redesign the system so it can’t break that way again.”

…back or continue the sequel… toolkits-and-warstories

Yours in calm diagnostics and pattern recognition,
#Dab & 51n5337
Keeping the digital world flowing, one fixed vibe at a time 💫🔧

>> TROUBLESHOOTING MANIFEST: COMPLETE
>> READY TO DEBUG REALITY...
>> STAY CHILL, STAY CURIOUS, STAY VIBING 😌✨