labs on azure

Hi all,
I tried to run the labs on azure VM, but we found an issue w/ calico (see https://forum.linuxfoundation.org/discussion/855770/connection-timeout-connecting-from-worker-to-the-local-registry-running-on-master-via-clusterip#latest)
After some investigation and I very useful post on medium, I think I found a solution that I'm sharing through a github repo
I didn't run yet the full lab, but the main previous blocking point has been solved.
I hope that helps and please feel free to contribute to my repo to improve the current azure solution
@chrispokorni @tanwarsatya thanks for supporting me during the azure issue, hope that helps you as well
@serewicz feel free to share it with others
Comments
-
@crixo @chrispokorni I'm trying to configure my Azure k8s cluster...
What I could find from all these links (what I need to change in Azure cluster created following the procedures described in the class Labs):- I need to use Canal instead of Calico
- I need to create Azure Routetable
- I need to add the following section
- networking:
- serviceSubnet: “10.240.0.0/16”
- podSubnet: “10.244.0.0/16”
Is it the steps I have to perform? Cause I didn't find cleat steps I need to do to fix Azure issue w Calico.
1 -
Or the steps I need to perform are (from https://docs.projectcalico.org/v3.4/reference/public-cloud/azure)?
- Enable IP forwarding enabled in your VM network interfaces.
- On Kubernetes, also complete the following.
- Ensure that the selected pod’s subnet is a part of your Azure virtual network IP range.
- Include the name of your routing table in the configuration file of your Kubernetes Azure cloud provider.
0 -
Hi @vasyhin
you should find all details on my repo at https://github.com/crixo/azure-kubeadm/blob/master/docs/azure-kubeadm.md
The same github repo contains all scripts for azure resources provisioning and for configuring the cluster as described within the markdown file here above. You simply have to provide your own azure login account@vasyhin said:
@crixo @chrispokorni I'm trying to configure my Azure k8s cluster...
What I could find from all these links (what I need to change in Azure cluster created following the procedures described in the class Labs):- I need to use Canal instead of Calico
- I need to create Azure Routetable
- I need to add the following section
- networking:
- serviceSubnet: “10.240.0.0/16”
- podSubnet: “10.244.0.0/16”
Is it the steps I have to perform? Cause I didn't find cleat steps I need to do to fix Azure issue w Calico.
0 -
Actiually my goal is not to simply get working env on Azure - but to understand what needs to be configured and why - to run k8s cluster on Azure VMs.
@crixo I will try to use your script to instantiate VMs in Azure. But I still trying to figure out what parameters in your script allows VMs to communicate with Pods on other machines.
Will let you know my results.0 -
@crixo I've read https://docs.projectcalico.org/v3.6/reference/public-cloud/azure#about-calico-on-azure again. And now I see that there are 3 options how to configure Calico on Azure.
I was trying to configure usingAzure CNI IPAM plug-in
(the simpliest I thought) - but still can't get it working.
Which way do you implement in your github code? The first one? (Azure user-defined routes)?0 -
FYI: created issue on Azure CNI plugin Github - to request help with plugin set up
https://github.com/Azure/azure-container-networking/issues/3330 -
@crixo Eventually I found the way to make it working. Option#2 (use flannel instead of calico) works well for me. Just followed the instructions. And how I can see now looks like your script uses
canal.yaml
as well (canal.yaml = flannel as I understood)1 -
@vasyhin said:
@crixo Eventually I found the way to make it working. Option#2 (use flannel instead of calico) works well for me. Just followed the instructions. And how I can see now looks like your script usescanal.yaml
as well (canal.yaml = flannel as I understood)Thanks @vasyhin , this is what I did. Your post was really helpful in solving my problem, especially when I found this piece of code to get the CIDR block
kubectl get nodes -o jsonpath='{.items[*].spec.podCIDR}'
. ThanksDavid
0 -
We do not support labs running on Azure. Too many problems.
0 -
Just using CANAL instead of CALICO fixes the problems. I am delivering these courses on Azure almost all of the time. Reason for CALICO not working is that it requireres IPinIP encapsulation. You can get working on Azure, but that definetely takes some tweaking. Using CANAL, it will do CALICO over FLANNEL which works around the IPinIP requirement.
0 -
@vasyhin said:
@crixo Eventually I found the way to make it working. Option#2 (use flannel instead of calico) works well for me. Just followed the instructions. And how I can see now looks like your script usescanal.yaml
as well (canal.yaml = flannel as I understood)@vasyhin I am trying to do the same, but still cannot make it work. Can you provide information to me, whether you used the same pod CIDR as during definition of kubeadm-config.yaml, as during definition of calico.yaml (uncomment and edit CALICO_IPV4POOL_CIDR), as during definition of canal.yaml (uncomment and edit CALICO_IPV4POOL_CIDR)?
0 -
@adamkolarik said:
@vasyhin I am trying to do the same, but still cannot make it work. Can you provide information to me, whether you used the same pod CIDR as during definition of kubeadm-config.yaml, as during definition of calico.yaml (uncomment and edit CALICO_IPV4POOL_CIDR), as during definition of canal.yaml (uncomment and edit CALICO_IPV4POOL_CIDR)?
Finally I succeded with deployment, it was not easy to get rid of calico deployment, simply only kubectl delete -f did not help me.
I had to follow instructions https://stackoverflow.com/questions/61672804/after-uninstalling-calico-new-pods-are-stuck-in-container-creating-state, so after delete file, then restart nodes, then apply canal.yaml (with uncomment and edit CALICO_IPV4POOL_CIDR) solved my problem.0 -
Some clearer notes that may help some people. I got this to work on Azure today by switching out the Calico setup for a Flannel + Calico setup (also known as Canal), since the default Calico setup does note work on Azure.
General instructions can be found at https://projectcalico.docs.tigera.io/getting-started/kubernetes/flannel/flannel
To make this work with the labs, change the master node set up as follows BEFORE running
k8scp.sh
. You will need to go into the lab folder LFD259/SOLUTIONS/s_02 and make some changes:Note the lab files set up a pod cidr of
192.168.0.0/16
. You can see this in the lab exercise files; see contents ofLFD259/SOLUTIONS/s_02/kubeadm.yaml
to find this, it's near the end.Download
canal.yaml
withwget https://docs.projectcalico.org/manifests/canal.yaml
- this URL obtained from the general instructions linked above.Edit the
canal.yaml
- you are looking to uncomment the setting of the CALICO_IPV4POOL_CIDR variable to match what was in kubeadm.yaml. For me the comment already included the correct CIDR. At the time of writing, the setting is on lines 4198-4199 of the file.Edit
k8scp.sh
; find the line that applies the calico.yaml to apply to edited canal.yaml instead. e.g. Change it fromkubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
tokubectl apply -f canal.yaml
. Note you'll need to runk8scp.sh
from the s_02 folder now to pick upcanal.yaml
- don't copy it to the home folder like in the lab notes.
4
Categories
- All Categories
- 243 LFX Mentorship
- 243 LFX Mentorship: Linux Kernel
- 815 Linux Foundation IT Professional Programs
- 366 Cloud Engineer IT Professional Program
- 165 Advanced Cloud Engineer IT Professional Program
- 83 DevOps Engineer IT Professional Program
- 131 Cloud Native Developer IT Professional Program
- 142 Express Training Courses & Microlearning
- 119 Express Courses - Discussion Forum
- Microlearning - Discussion Forum
- 6.6K Training Courses
- 40 LFC110 Class Forum - Discontinued
- 72 LFC131 Class Forum
- 49 LFD102 Class Forum
- 234 LFD103 Class Forum
- 21 LFD110 Class Forum
- 31 LFD121 Class Forum
- LFD123 Class Forum
- LFD125 Class Forum
- 16 LFD133 Class Forum
- 6 LFD134 Class Forum
- 17 LFD137 Class Forum
- 70 LFD201 Class Forum
- 3 LFD210 Class Forum
- 2 LFD210-CN Class Forum
- 2 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- 2 LFD233 Class Forum
- 2 LFD237 Class Forum
- 24 LFD254 Class Forum
- 719 LFD259 Class Forum
- 109 LFD272 Class Forum
- 4 LFD272-JP クラス フォーラム
- 10 LFD273 Class Forum
- 234 LFS101 Class Forum
- 2 LFS111 Class Forum
- 2 LFS112 Class Forum
- 1 LFS116 Class Forum
- 3 LFS118 Class Forum
- LFS120 Class Forum
- 2 LFS142 Class Forum
- 2 LFS144 Class Forum
- 3 LFS145 Class Forum
- 1 LFS146 Class Forum
- 16 LFS148 Class Forum
- 15 LFS151 Class Forum
- 1 LFS157 Class Forum
- 64 LFS158 Class Forum
- LFS158-JP クラス フォーラム
- 4 LFS162 Class Forum
- 1 LFS166 Class Forum
- 6 LFS167 Class Forum
- 1 LFS170 Class Forum
- 2 LFS171 Class Forum
- 2 LFS178 Class Forum
- 2 LFS180 Class Forum
- 1 LFS182 Class Forum
- 5 LFS183 Class Forum
- 30 LFS200 Class Forum
- 737 LFS201 Class Forum - Discontinued
- 2 LFS201-JP クラス フォーラム
- 17 LFS203 Class Forum
- 135 LFS207 Class Forum
- 1 LFS207-DE-Klassenforum
- LFS207-JP クラス フォーラム
- 302 LFS211 Class Forum
- 55 LFS216 Class Forum
- 53 LFS241 Class Forum
- 50 LFS242 Class Forum
- 37 LFS243 Class Forum
- 13 LFS244 Class Forum
- 1 LFS245 Class Forum
- LFS246 Class Forum
- LFS248 Class Forum
- 81 LFS250 Class Forum
- 2 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 143 LFS253 Class Forum
- LFS254 Class Forum
- LFS255 Class Forum
- 6 LFS256 Class Forum
- LFS257 Class Forum
- 1.2K LFS258 Class Forum
- 9 LFS258-JP クラス フォーラム
- 135 LFS260 Class Forum
- 151 LFS261 Class Forum
- 41 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 22 LFS267 Class Forum
- 25 LFS268 Class Forum
- 29 LFS269 Class Forum
- 7 LFS270 Class Forum
- 199 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 2 LFS147 Class Forum
- LFS274 Class Forum
- 3 LFS281 Class Forum
- 2 LFW111 Class Forum
- 257 LFW211 Class Forum
- 176 LFW212 Class Forum
- 12 SKF100 Class Forum
- SKF200 Class Forum
- 2 SKF201 Class Forum
- 789 Hardware
- 199 Drivers
- 68 I/O Devices
- 37 Monitors
- 98 Multimedia
- 174 Networking
- 91 Printers & Scanners
- 83 Storage
- 753 Linux Distributions
- 82 Debian
- 67 Fedora
- 17 Linux Mint
- 13 Mageia
- 23 openSUSE
- 147 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 350 Ubuntu
- 464 Linux System Administration
- 39 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 91 Linux Security
- 78 Network Management
- 101 System Management
- 47 Web Management
- 69 Mobile Computing
- 17 Android
- 28 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 379 Off Topic
- 113 Introductions
- 177 Small Talk
- 26 Study Material
- 521 Programming and Development
- 291 Kernel Development
- 212 Software Development
- 1.1K Software
- 263 Applications
- 180 Command Line
- 3 Compiling/Installing
- 988 Games
- 311 Installation
- 79 All In Program
- 79 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)