May 2019
Intermediate to advanced
308 pages
8h 5m
English
Content preview from AWS Certified Advanced Networking - Specialty Exam Guide
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EC2 instance not accessible
When an instance is not accessible on the network, we need to troubleshoot from the outside. Since, in AWS EC2, we do not have any kind of access to the operating system other than the network, any cause of instances not responding on the network needs to be determined by checking the following:
- Instance health check: Is the instance running yet? Has it passed the health checks? You might be too eager to connect to a newly created instance, or an instance that has been running for some time is showing a degraded instance health. If the health check is indicating an issue, reboot the instance or redeploy it if it is stateless. For advanced instance health check troubleshooting, please refer to the Further reading ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.