levelupeducation/kubernetes-demo

kubernetes-demo's Issues

error calling include: template: no template "temp.chart" associated with template "gotpl"

Hi,

I am following up lesson 73 and I get the error below

Error: render error in "helm-chart-creation/templates/ghost-deployment.yaml": template: helm-chart-creation/templates/ghost-deployment.yaml:9:14: executing "helm-chart-creation/templates/ghost-deployment.yaml" at <include "temp.chart" .>: error calling include: template: no template "temp.chart" associated with template "gotpl"

I thought that I need to move the .tpl file in the same folder as the Chart.yaml, actually I did that, but it didn't work, still getting that error.

Could it be something wrong with this piece of code from the .tpl file?

Create chart name and version as used by the chart label.
*/}}
{{- define "temp.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
{{- end -}}

Thanks.

Add more info regarding kubectl set image command

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/4886780

Your First Kubernetes Application Commands - HTTP Status 404 – Not Found

After deploying the tomcat yaml file and getting and checking the url by minikube service tomcat-deployment --url

I get an HTTP Status 404 – Not Found error from Apache Tomcat/9.0.35

Images provided in deployment.yml not wroking

I have recently applied for your course in Udemy and executing deployments mentioned but most of the images are not working on minikube:
kubelet, minikube Failed to pull image "mysql:5.6": rpc error: code = Unknown desc = Error response from daemon: Get https://registry-1.docker.io/v2/library/mysql/manifests/5.6: Get https://auth.docker.io/token?scope=repository%3Alibrary%2Fmysql%3Apull&service=registry.docker.io: dial tcp: lookup auth.docker.io on 10.0.2.3:53: read udp 10.0.2.15:59586->10.0.2.3:53: i/o timeout

Error pod has unbound immediate PersistentVolumeClaims Back-off restarting failed container

Hi,

I am getting errror "pod has unbound immediate PersistentVolumeClaims
Back-off restarting failed container" when deploying wordpress according to instructions in chapter 47.

Any ideas?

thanks in advance,

Amauris

[Resource Quota Lecture] All objects must use either requests or limits

What happens during that lecture is we configure the limits.cpu in the Resourcequote. But don't configure it in the tomcat-deployment instead we configure the Cpu requests.

Which occurs in the error we receive. If you change limits.cpu to requests.cpu everything works just fine.

Related Question(s)

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5088982

[Feature] K8s on Virtual Machines

"Is there any plans to add a k8s installation using common virtual machines, like Vmware?

I want to know how to create a k8s cluster with 2 masters and at least 3 workers manually, and show the best practice for it, and tips about kubernetes network and some operational problems may you can have on a production environment."

Related Question(s):

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5260472

Deprecation of flag breaks Audits

I have used minikube v1.23.2 on Debian 10.10, fairly successfully on all lessons except Audits.
When running the dot sh command I got the following persistent error:
Problems detected in kube-apiserver [197470447e13]:Error: unknown flag: --Audit.Log Options.Path

Which required me to delete minikube and re-install it. Fortunately I had good notes. From my History I offer (with notes and #s) the commands I used to re-install minikube.
RemoveAndReinstallMiniKube.txt

[ Section2/ Lecture 21/ 00:59] The video was cut

The instructor said "to determine when a pod is healthy or unhealthy" but he didn't complete the second part of the phrase which is "after it has become ready"

Lecture

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9630316

Related questions

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9630316

Section 3.Lecture 21 - kubectl dashboard can't display

Environment:

Minikube version (use minikube version): v0.28.1

• OS : macOS Sierra v10.12.6
• VM Driver (e.g. cat ~/.minikube/machines/minikube/config.json | grep DriverName): virtualbox
• ISO version (e.g. cat ~/.minikube/machines/minikube/config.json | grep -i ISO or minikube ssh cat /etc/VERSION): minikube-v0.28.1.iso

What happened:

After running kubectl proxy, http://localhost:8001/ui shows the following in the browser:

What you expected to happen:

• Section 3 Lecture 21 - 3:04

OR

• http://localhost:8001/ui should redirect to http://127.0.0.1:8001/api/v1/namespaces/kube-system/services/kubernetes-dashboard/proxy/#!/overview

How to reproduce it (as minimally and precisely as possible):

• run kubectl proxy
• navigate to http://localhost:8001/ui through the browser or curl http://localhost:8001/ui

[Section 2, Lecture 17] Line is duplicated in the list of commands

kubectl describe services tomcat-load-balancer

Is duplicated.

investigate secret issue

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/4372178

Api version deprecated

Change apps/v1beta2 to apps/v1

[Section1, L3 ] Add a guide on how to pull changes after moving repository to LevelUp account

Overview

This lecture needs update namely after moving the GH repository to LevelUpEducation GH account

Related Lecture

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9624364?start=0

Related Question:

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9624364?start=0

[Docker] Isolation use cases

Related Question:

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5223126

[ Resources Quota Lecure] Add a useful command for valdiation

Just after running kubectl -n cpu-limited-tomcat get resourcequota, we can run the describe command:

kubectl -n cpu-limited-tomcat describe resourcequotas compute-resources

Related Lecture:

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9671576?start=0

[Volumes Lecture ] The default storage Class in minikube

The DefaultStorageClass admission plugin must be enabled to not encounter issues

Related Question(s):

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5108602

Section4.Lecture 26 - Manage code dependencies

Trigger:

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/4804306

Description
Sometimes, the student jumps into a lecture without following the previous lectures.

If the source code of that lecture dependents on other source code of another lecture, we may need to update the lecture of commands

[Helm Section - Lecture 71] Typo "kube-system" and not "kube.system"

At the minute 6 and 26 seconds, the instructor ran this command:

kubectl create clusterrolebinding tiller --clusterrole cluster-admin --serviceaccount=kube.system:tiller

This command includes a typo in the value of the last option

Related Question(s):

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5309032

Tomcat Deployment failing on Minikube

Following error is appearing when deploying first app on K8s as per your training material:

Failed to pull image "tomcat:9.0": rpc error: code = Canceled desc = context canceled

rename Section 3/Lecture 19 to Labels & Selectors

Selectors are already explained in the Section 3/Lecture 19. I understand the title of the lecture is "Labels" , however, it should be renamed to "Labels & Selectors".

[Suggestion] - Assign IAM role at the pod level

Overview

Adding a lecture to explain how we can implement IAM role on pod level rather than apply on nodes ?

Related question (s):

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5870712

[ Section2. Lecture 21 ] Request more hands-on with healthchecks

This is a request of adding hands-on lectures about healthchecks
Lecture

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9630316

Related question

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9630316

"kubectl run" is deprecated, use "kubectl create" instead

In the autoscaling lesson the following is run in a second terminal:

kubectl run -i --tty load-generator --image=busybox /bin/sh

After this you get a warning:

kubectl run --generator=deployment/apps.v1beta1 is DEPRECATED and will be removed in a future version. Use kubectl create instead.

This issue is a recent issue and it has been already raised by the community 9 days ago:

• issue: kubernetes/examples#277

• migration example from run to create: https://github.com/kubernetes/examples/pull/280/files

Related Question (s)

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/5371892

Related Lecture

https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/t/lecture/9671606?start=0

[Section 1, Lecture 8 ] Sync slide title, text and talk

Around minute 3:50, you change the slide title and start talking about minikube, but the main text remains the same as to when you were talking about GKE

apiVersion "apps/v1beta1" or "apps/v1beta2" are now legacy

The recent apiVersion of deployments is apiVersion: apps/v1.

Related Question(s)

• https://www.udemy.com/kubernetes-from-a-devops-kubernetes-guru/learn/v4/questions/4237268

error: SchemaError(io.k8s.api.apps.v1beta2.DaemonSet): invalid object doesn't have additional properties

Getting following error when applying deployment.yaml.
kubernetes-demo-master/Introduction to Kubernetes/Your First k8s App/deployment.yaml

kubectl apply -f deployment.yaml

error: SchemaError(io.k8s.api.apps.v1beta2.DaemonSet): invalid object doesn't have additional properties

kubectl version

Client Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.11", GitCommit:"637c7e288581ee40ab4ca210618a89a555b6e7e9", GitTreeState:"clean", BuildDate:"2018-11-26T14:38:32Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0", GitCommit:"641856db18352033a0d96dbc99153fa3b27298e5", GitTreeState:"clean", BuildDate:"2019-03-25T15:45:25Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"linux/amd64"}

[Section 2, Lecture 17] Typo in dashes of commands' options

Replacing single dashes by double dashes in Lecture 17.

i.e:

kubectl scale --replicas=4 deployment/tomcat-deployment 

instead of

kubectl scale —replicas=4 deployment/tomcat-deployment 

and so on.