Lab 8.1: Connection time out error

When I run curl command, I always have a Connection timed out error, what is this error due to? And how can I solve it? Thank you very much!
Comments
-
Hi @chiateleung,
Have you encountered any similar errors in previous labs? Or did it just happen in Lab 8.1?
Such timeouts may indicate a firewall blocking some connections. Are you on AWS? Have you opened the firewall to allow all ingress traffic?
Regards,
-Chris0 -
Yup I am using AWS, and I doesn't see any timeout error in pervious lab, only see this error in lab 8.1. Do I need to set any firewall in add to allow ingress traffic? I use Mac and the firewall in disable on my Mac. Thank you so much!
0 -
Hi,
If you run the lab exercises on AWS then your workstation firewall should not be interfering.
The Overview section of Lab 3 addresses some concerns around firewall rules when running in the cloud GCP or AWS.With no visibility into your infrastructure configuration and your cluster, it is hard to tell what causes the timeout. You can try running
curl
from your other node, and see whether it is successful.Regards,
-Chris0 -
Thank you Chris!
When I run the cluster info, I can't see the "Metrics-server is running at ..." output as the lab, does it matter? Thanks!
T
curl: (7) Failed to connect to k8smaster port 31528: Connection timed out0
Categories
- 8.9K All Categories
- 13 LFX Mentorship
- 66 LFX Mentorship: Linux Kernel
- 364 Linux Foundation Boot Camps
- 231 Cloud Engineer Boot Camp
- 70 Advanced Cloud Engineer Boot Camp
- 25 DevOps Engineer Boot Camp
- 5 Cloud Native Developer Boot Camp
- 858 Training Courses
- 15 LFC110 Class Forum
- 16 LFD102 Class Forum
- 102 LFD103 Class Forum
- 3 LFD121 Class Forum
- 55 LFD201 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 19 LFD254 Class Forum
- 431 LFD259 Class Forum
- 86 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 16 LFS200 Class Forum
- 694 LFS201 Class Forum
- LFS201-JP クラス フォーラム
- 271 LFS211 Class Forum
- 50 LFS216 Class Forum
- 26 LFS241 Class Forum
- 28 LFS242 Class Forum
- 19 LFS243 Class Forum
- 6 LFS244 Class Forum
- 9 LFS250 Class Forum
- LFS250-JP クラス フォーラム
- 109 LFS253 Class Forum
- 792 LFS258 Class Forum
- 7 LFS258-JP クラス フォーラム
- 51 LFS260 Class Forum
- 79 LFS261 Class Forum
- 14 LFS262 Class Forum
- 76 LFS263 Class Forum
- 14 LFS264 Class Forum
- 10 LFS266 Class Forum
- 8 LFS267 Class Forum
- 9 LFS268 Class Forum
- 6 LFS269 Class Forum
- 181 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 187 LFW211 Class Forum
- 104 LFW212 Class Forum
- 878 Hardware
- 207 Drivers
- 74 I/O Devices
- 43 Monitors
- 115 Multimedia
- 204 Networking
- 98 Printers & Scanners
- 82 Storage
- 724 Linux Distributions
- 82 Debian
- 64 Fedora
- 12 Linux Mint
- 13 Mageia
- 22 openSUSE
- 126 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 347 Ubuntu
- 447 Linux System Administration
- 33 Cloud Computing
- 64 Command Line/Scripting
- Github systems admin projects
- 89 Linux Security
- 73 Network Management
- 105 System Management
- 45 Web Management
- 50 Mobile Computing
- 18 Android
- 19 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 499 Off Topic
- 119 Introductions
- 193 Small Talk
- 19 Study Material
- 748 Programming and Development
- 240 Kernel Development
- 474 Software Development
- 902 Software
- 247 Applications
- 178 Command Line
- 2 Compiling/Installing
- 72 Games
- 314 Installation
- 20 All In Program
- 20 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)