Still unable to connect worker node to cp node
When I execute the "sudo kubeadm join" command on the worker node, I get the following:
[preflight] Running pre-flight checks
error execution phase preflight: couldn't validate the identity of the API Server: Get "https:///api/v1/namespaces/kube-public/configmaps/cluster-info?timeout=10s": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
To see the stack trace of this error execute with --v=5 or higher
Answers
-
I've performed over a dozen times (with 11.08/11.23) as I'm using a temporary Cloud (GCP) lab on Ubuntu 20.04 LTS.
Did this occur while using the
kubeadm join
verbatim?From:
grep -A2 join cp.out
sudo kubeadm join <VPC ASSIGNED_IP_OF_CP>:6443 --token <PRINTED_TOKEN> \ --discovery-token-ca-cert-hash sha256:<MORE_PRINTED_TOKEN>
0 -
Hi @tstaffordsmith,
What type of infrastructure are you on? It seems there is a timeout, that could be caused by a misconfigured firewall. Are you on cloud or local VMs? What OS version, CPU, RAM?
Regards,
-Chris0 -
Already figured this out but thank you
0 -
@chrispokorni Hello! I'm experiencing this same issue.
I'm running on AWS. Using the ubuntu-jammy-22.04-amd64-server-20230919 image. 2cpu. 8gb RAM. 20gb storage. I tried to stay as close to the recommendations from the instructor. I believe I have all types of traffic and all ports allowed on both CP and Worker EC2 instances.
What would be the next thing I should look at? Thanks for any help!
0 -
Hi @stmcallister1,
While the EC2 instance size seems to be adequate, I would recommend using the lab guide recommended OS, that is Ubuntu 20.04 LTS.
Are both EC2 instances in the same SG? If not, is traffic allowed between the EC2 instance SGs?Regards,
-Chris0 -
Huh. That was it! Using Ubuntu 20.04 LTS instead of 22.04 made all the difference.
Thank you, @chrispokorni!
0
Categories
- All Categories
- 65 LFX Mentorship
- 118 LFX Mentorship: Linux Kernel
- 618 Linux Foundation IT Professional Programs
- 322 Cloud Engineer IT Professional Program
- 141 Advanced Cloud Engineer IT Professional Program
- 56 DevOps Engineer IT Professional Program
- 67 Cloud Native Developer IT Professional Program
- 6 Express Training Courses
- 6 Express Courses - Discussion Forum
- 2.4K Training Courses
- 19 LFC110 Class Forum - Discontinued
- 9 LFC131 Class Forum
- 31 LFD102 Class Forum
- 178 LFD103 Class Forum
- LFD110 Class Forum
- 24 LFD121 Class Forum
- LFD133 Class Forum
- 2 LFD137 Class Forum
- 62 LFD201 Class Forum
- 2 LFD210 Class Forum
- 1 LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- LFD233 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 660 LFD259 Class Forum
- 108 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 4 LFD273 Class Forum
- 1 LFS101 Class Forum
- LFS116 Class Forum
- 2 LFS145 Class Forum
- LFS151 Class Forum
- LFS158 Class Forum
- LFS167 Class Forum
- 28 LFS200 Class Forum
- 740 LFS201 Class Forum - Discontinued
- 1 LFS201-JP クラス フォーラム
- 13 LFS203 Class Forum
- 98 LFS207 Class Forum
- 301 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 38 LFS243 Class Forum
- 12 LFS244 Class Forum
- LFS245 Class Forum
- 41 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 143 LFS253 Class Forum
- LFS254 Class Forum
- LFS255 Class Forum
- 2 LFS256 Class Forum
- LFS257 Class Forum
- 1.2K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 109 LFS260 Class Forum
- 147 LFS261 Class Forum
- 39 LFS262 Class Forum
- 83 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 21 LFS267 Class Forum
- 18 LFS268 Class Forum
- 26 LFS269 Class Forum
- 204 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- 3 LFS281 Class Forum
- 258 LFW211 Class Forum
- 179 LFW212 Class Forum
- 9 SKF100 Class Forum
- SKF200 Class Forum
- 908 Hardware
- 221 Drivers
- 74 I/O Devices
- 44 Monitors
- 116 Multimedia
- 210 Networking
- 102 Printers & Scanners
- 86 Storage
- 765 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 144 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 484 Linux System Administration
- 40 Cloud Computing
- 71 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 80 Network Management
- 108 System Management
- 52 Web Management
- 75 Mobile Computing
- 25 Android
- 35 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 544 Off Topic
- 131 Introductions
- 223 Small Talk
- 22 Study Material
- 836 Programming and Development
- 285 Kernel Development
- 517 Software Development
- 975 Software
- 261 Applications
- 185 Command Line
- 3 Compiling/Installing
- 119 Games
- 318 Installation
- 65 All In Program
- 65 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)