GCE worker node not working after a day

Hi, I have setup both master and worker nodes in GCE as per the initial setup details and with class resources (k8sMaster.sh and K8sSecond.sh). After this I used to kubeadm join command from master node output to join worker node to the cluster.
It works fine for a day and if I reconnect to worker node (using putty) after that and try to execute any kubectl command like get pods, I keep getting below error.
"The connection to the server localhost:8080 was refused - did you specify the right host or port?"
Has any one else faced this issue and know how to resolve this? I tried 2 times setting up entire thing again from scratch but still this problem resurfaces after a day or two.
Best Answer
-
Hi @tlf4pundari,
The lab exercise only configures
kubectl
to work from the master/ckad-1 node, and not from the worker/ckad-2 node.
Did you find in the lab any step where a successfulkubectl
command was issued from the worker/ckad-2 node?Regards,
-Chris0
Answers
-
Hi chrispokorni,
Thank you for the clarification. I was doing it in incorrect terminal of worker node instead of master node.
Regards,
Pundari0 -
@chrispokorni
unless I'm mistaken, Lab 7.1 problem 9 requires this?
Step 8 required curl to the ClusterIP (10.109.134.221) which is different from the following. Not sure how this is executed unless with kubectl on worker node to discover this elusive alternative IP as shown below.9. Test access from an external node to the host IP and the high container port. Your IP and port will be different. It shouldwork, even with the network policy in place, as the traffic is arriving via a 192.168.0.0 port.
[email protected]: ̃/Desktop$ curl http://35.184.219.5:32000
0 -
Hi @nkerr,
If you look closely at Step 7, that is where you uncover the value of the
ClusterIP
address of thesecondapp
Service resource, the one specific to your cluster, which will be different than the one presented in the lab guide. So in Step 8 you are expected tocurl
theClusterIP
extracted in Step 7, and then in Step 9 you woldcurl
the public IP of one of your hosts/nodes paired with port32000
, and again, your public IP will be different than the one presented in the lab guide.Regards,
-Chris1 -
Thanks Chris
0
Categories
- 9.7K All Categories
- 22 LFX Mentorship
- 75 LFX Mentorship: Linux Kernel
- 439 Linux Foundation Boot Camps
- 259 Cloud Engineer Boot Camp
- 88 Advanced Cloud Engineer Boot Camp
- 40 DevOps Engineer Boot Camp
- 19 Cloud Native Developer Boot Camp
- Express Training Courses
- Express Courses - Discussion Forum
- 1.5K Training Courses
- 17 LFC110 Class Forum
- 3 LFC131 Class Forum
- 18 LFD102 Class Forum
- 113 LFD103 Class Forum
- 8 LFD121 Class Forum
- 59 LFD201 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 23 LFD254 Class Forum
- 527 LFD259 Class Forum
- 99 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFS145 Class Forum
- 18 LFS200 Class Forum
- 736 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- LFS203 Class Forum
- 23 LFS207 Class Forum
- 292 LFS211 Class Forum
- 53 LFS216 Class Forum
- 41 LFS241 Class Forum
- 33 LFS242 Class Forum
- 31 LFS243 Class Forum
- 9 LFS244 Class Forum
- 27 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- 123 LFS253 Class Forum
- 921 LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 78 LFS260 Class Forum
- 122 LFS261 Class Forum
- 27 LFS262 Class Forum
- 77 LFS263 Class Forum
- 15 LFS264 Class Forum
- 10 LFS266 Class Forum
- 13 LFS267 Class Forum
- 16 LFS268 Class Forum
- 13 LFS269 Class Forum
- 190 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 201 LFW211 Class Forum
- 147 LFW212 Class Forum
- 888 Hardware
- 211 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 206 Networking
- 98 Printers & Scanners
- 85 Storage
- 744 Linux Distributions
- 88 Debian
- 64 Fedora
- 12 Linux Mint
- 13 Mageia
- 24 openSUSE
- 132 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 353 Ubuntu
- 465 Linux System Administration
- 37 Cloud Computing
- 65 Command Line/Scripting
- Github systems admin projects
- 94 Linux Security
- 77 Network Management
- 107 System Management
- 47 Web Management
- 59 Mobile Computing
- 21 Android
- 24 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 523 Off Topic
- 126 Introductions
- 210 Small Talk
- 19 Study Material
- 780 Programming and Development
- 254 Kernel Development
- 492 Software Development
- 918 Software
- 255 Applications
- 181 Command Line
- 2 Compiling/Installing
- 75 Games
- 316 Installation
- 45 All In Program
- 45 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)