An EC2 instance can be running perfectly and still have no internet access.

Before blaming the server, check the network.

Route tables. NAT Gateway. Security Groups. Network ACLs.

Cloud troubleshooting starts with understanding the traffic path.

#AWS #CloudNetworking #EmmanueleTech

An employee changes departments but still has access to their old department’s systems.
Nothing is broken.
But is that still a security issue?
I think it is.
#ITSecurity #EmmanueleTech

Access shouldn’t be permanent just because it was appropriate when it was granted.
Roles change. Responsibilities change.
Permissions should be reviewed too.
#AccessManagement #EmmanueleTech

Creating a user account is easy.
The bigger responsibility is managing that access as the person's role changes and eventually removing it when it is no longer needed.
#ITAdministration #EmmanueleTech

An application slows down every weekday around 9 AM, then recovers 30 minutes later.
I wouldn’t immediately resize the server.
That timing is a clue.
I’d investigate what regularly happens during that window.
#Troubleshooting #EmmanueleTech

A metric is more useful when you know what normal looks like.
CPU at 70 percent means more when you know whether the workload normally runs at 20 percent or 65 percent.
Baselines matter.
#CloudOperations #EmmanueleTech

When an application struggles, adding more CPU or memory might help.
But I first want to know why it is struggling.
More resources can sometimes hide the real problem.
#CloudInfrastructure #EmmanueleTech

Good infrastructure shouldn’t depend on one person remembering everything.
Another engineer should be able to understand the environment, the major decisions and how it is managed.
#CloudInfrastructure #EmmanueleTech

Users suddenly can’t access an application.
I wouldn’t start making random changes.
Confirm the impact, check logs and metrics, review recent changes and communicate while investigating.
Calm troubleshooting matters.
#IncidentResponse #EmmanueleTech

Incident response isn’t only technical.
While you investigate the problem, people also need to know what is happening.
You may not have the answer yet, but you can communicate what you know.
#ITOperations #EmmanueleTech

Five people need access to the same system.
Would you make all five administrators?
I wouldn’t.
I’d first understand what each person actually needs to do and assign access around those responsibilities.
#CloudSecurity #EmmanueleTech

I don’t think everyone needs administrator access just because it makes things easier.
Access should match responsibility.
Give people what they need to do their work without giving away unnecessary control.
#AccessManagement #EmmanueleTech

I prefer individual accounts over shared credentials.
When everyone has their own identity, it becomes easier to understand who has access, who made a change and whose access should be removed.
#CloudSecurity #EmmanueleTech

You inherit an AWS environment you didn’t build.
Everything works.
Would you start changing things?
I wouldn’t.
First I’d understand the architecture and trace how traffic, routing and access work.
Understand before you optimize.
#CloudInfrastructure #EmmanueleTech

I like asking why before how.
How do I configure it?
Important.
Why does the architecture need it?
Just as important.
Knowing how helps you build. Understanding why helps you design.
#CloudEngineering #EmmanueleTech

Knowing the tool and understanding the system are different things.
I don’t only want to know how to create infrastructure.
I want to understand how the pieces work together and what happens when something fails.
#CloudInfrastructure #EmmanueleTech

I inherit several servers with public IPs.
I wouldn’t immediately change everything.
First I’d understand why each one is public and what depends on that access.
Secure the environment, but understand it first.
#CloudInfrastructure #EmmanueleTech

Morning
I prefer thinking about security before deployment.
Who needs access?
What needs to be public?
Which ports are actually required?
Security works better when it is part of the design.
#CloudSecurity #EmmanueleTech

Dashboard is green.
Servers are healthy.
But users cannot complete an important action.
I wouldn’t ignore the users because the metrics look normal.
A healthy server doesn’t always mean a healthy service.
#CloudOperations #EmmanueleTech

A healthy server doesn’t always mean a healthy service.
The infrastructure can look normal while users are still having problems.
I want to know what the system sees and what the user experiences.
#CloudOperations #EmmanueleTech