Labs 12.3 Cannot access metrics-server dashboard from browser

Hi Linux Foundation team,
I've followed the lab successfully so far but could not fire up the browser to see the dashboard. I can successfully see the top pod / node metrics using kubectl inside my master node. I am definitely using the correct public IP address and high port number.
My setup is an EC2 instance running ubuntu. Is it possible to do with my secuirty group setting in aws? I made sure to allow inbound from both http and https (screenshots attached). Any tips on troubleshooting would be highly appreciated. Thanks!!!
Comments
-
Hello,
Indeed it is probably your firewall. Please reference the lab guide which suggests opening up all of the ports. After that you could use the IP of the primary interface of the master node, the one inside the instance, not the public IP you use to get there. If you can see the dashboard using a tool like elinks, it would be another way to know it was the AWS firewall that blocks the traffic.
Regards,
0 -
Hi @ValerieLi,
Another possible issue is Chrome. As of late, Chrome no longer allows access to insecure websites. I would try accessing the dashboard through Firefox as an alternative to Chrome.
Regards,
-Chris0 -
@serewicz @chrispokorni - good news. After i enabled all traffic from all ports it did work with the public iP exposed by AWS (in firefox browser). Hooray!
While I have your attention, do you think i can trouble you with one similar issue? I happen to be also reviewing the last lab 16.2 today since it also requires you to access a HAProxy Stats dashboard and i'm getting 503 errors. My logs look fine and I'm attaching my config file. When I was researching online, it was suggested that it might be because my backend server is not available. Is there any way to test that? Some also suggest to change the default mode to http vs. tcp. It did not help resolve my issue. Btw I can successfully ping my master node from the loadbalancer node using the eth0 IP. Cheers!
0 -
Hi @ValerieLi ,
Are you using the
haproxy.cfg
file provided in the SOLUTIONS tarball? And you only modified the IP address and the name of your Master-1 in that file? And yourhaproxy.service
restarted without any issues? And you tried the full path as it is presented in the lab exercise http://3.22.164.15:9999/stats ?That is very strange, because I just accessed your haproxy dashboard
Unless you were able to fix it in the meantime, I can't see anything wrong with it.
Regards,
-Chris0 -
Whoaa, i'm super amazed and puzzled because I didn't do anything since last night and yes I can access it without problems now... thanks so much again @chrispokorni!!!!
0 -
Then it could have been the missing
/stats
from the URL, based on your screenshot.0 -
Happy to report I took the CKA exam last week and got a passing score! Thanks so much for all the help! @chrispokorni @serewicz
0 -
Congrats!!!
0 -
Congratulations @ValerieLi!
Welcome to the family0
Categories
- All Categories
- 50 LFX Mentorship
- 103 LFX Mentorship: Linux Kernel
- 576 Linux Foundation IT Professional Programs
- 304 Cloud Engineer IT Professional Program
- 125 Advanced Cloud Engineer IT Professional Program
- 53 DevOps Engineer IT Professional Program
- 61 Cloud Native Developer IT Professional Program
- 5 Express Training Courses
- 5 Express Courses - Discussion Forum
- 2K Training Courses
- 19 LFC110 Class Forum
- 7 LFC131 Class Forum
- 27 LFD102 Class Forum
- 157 LFD103 Class Forum
- 20 LFD121 Class Forum
- 1 LFD137 Class Forum
- 61 LFD201 Class Forum
- 1 LFD210 Class Forum
- LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 611 LFD259 Class Forum
- 105 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFD273 Class Forum
- 2 LFS145 Class Forum
- 24 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 11 LFS203 Class Forum
- 75 LFS207 Class Forum
- 300 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 37 LFS243 Class Forum
- 11 LFS244 Class Forum
- 36 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 140 LFS253 Class Forum
- LFS254 Class Forum
- 1.1K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 93 LFS260 Class Forum
- 132 LFS261 Class Forum
- 33 LFS262 Class Forum
- 80 LFS263 Class Forum
- 15 LFS264 Class Forum
- 11 LFS266 Class Forum
- 18 LFS267 Class Forum
- 17 LFS268 Class Forum
- 23 LFS269 Class Forum
- 203 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- LFS281 Class Forum
- 234 LFW211 Class Forum
- 172 LFW212 Class Forum
- 7 SKF100 Class Forum
- SKF200 Class Forum
- 902 Hardware
- 219 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 209 Networking
- 101 Printers & Scanners
- 85 Storage
- 763 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 142 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 479 Linux System Administration
- 41 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 78 Network Management
- 108 System Management
- 49 Web Management
- 68 Mobile Computing
- 23 Android
- 30 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 537 Off Topic
- 131 Introductions
- 217 Small Talk
- 21 Study Material
- 826 Programming and Development
- 278 Kernel Development
- 514 Software Development
- 928 Software
- 260 Applications
- 184 Command Line
- 3 Compiling/Installing
- 76 Games
- 316 Installation
- 62 All In Program
- 62 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)