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<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
<title>Kubernetes Daily</title>
<link>https://kubernetesdaily.github.io</link>
<description>Learn Kubernetes, Cloud Native, DevOps, and Container technologies with hands-on tutorials, guides, and best practices.</description>
<language>en</language>
<lastBuildDate>2025-04-29T06:45:07.645Z</lastBuildDate>
<atom:link href="https://kubernetesdaily.github.io/rss.xml" rel="self" type="application/rss+xml"/>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/werf</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/werf</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><](https://github.com/werf/werf)
#### Install Werf
```bash
➜ ~ curl -sSLO https://werf.io/install.sh && chmod +x install.sh
➜ ~ ./install.sh --version 1.2 --channel stable
[INPUT REQUIRED] Current login shell is "zsh". Press ENTER to setup werf for this shell or choose another one.
[b]ash/[z]sh/[a]bort? Default: zsh.
z
[INPUT REQUIRED] trdl is going to be installed in "/Users/sangambiradar/bin/". Add this directory to your $PATH in "/Users/sangambiradar/.zshrc" and "/Users/sangambiradar/.zprofile"? (strongly recommended)
[y]es/[a]bort/[s]kip? Default: yes.
yes
[INFO] Installing trdl to "/Users/sangambiradar/bin/".
[INFO] Adding werf repo to trdl.
[INPUT REQUIRED] Add automatic werf activation to "/Users/sangambiradar/.zshrc" and "/Users/sangambiradar/.zprofile"? (recommended for interactive usage, not recommended for CI)
[y]es/[a]bort/[s]kip? Default: yes.
[INFO] werf installation finished successfully!
[INFO] Open new shell session if you have enabled werf autoactivation or activate werf manually with:
$ source $("/Users/sangambiradar/bin/trdl" use werf "1.2" "stable")
```
### werf use trdl
trdl is an Open Source solution providing a secure channel for delivering updates from the Git repository to the end user.
Problems that trdl solves for you
- Continuous delivery limitations
- Continuous delivery via the CI system works well for the SaaS model, that is, for software
- hosted on cloud servers. At the same time, you would be hard-pressed to find a tool that is as fast at delivering code to user devices.
- Challenges related to implementing a secure delivery
- What complicates things:
- Software release and changes in release channels must only occur based on a collective decision of the team (quorum).
- The system must protect against unauthorized access and data compromise.
- The system must not be compromised by human mistakes, including regulation breaches.
- Package manager limitations
- There are many package managers, but they all have common drawbacks:
- Each platform requires its own manager.
- The package creation process is complicated.
- There is a lot of manual work involved: the user has to add the package source, find the package, and install/upgrade/uninstall it.
### verify werf cli installed or not
```
➜ ~ werf
werf helps to implement and support Continuous Integration and Continuous
Delivery.
Find more information at https://werf.io
Delivery commands:
converge Build and push images, then deploy application into Kubernetes
dismiss Delete werf release from Kubernetes
bundle Work with werf bundles: publish bundles into container
registry and deploy bundles into Kubernetes cluster
Cleaning commands:
cleanup Cleanup project images in the container registry
purge Purge all project images in the container registry
Helper commands:
ci-env Generate werf environment variables for specified CI system
build Build images
export Export images
run Run container for project image
kube-run Run container for project image in Kubernetes
compose Work with docker-compose
slugify Print slugged string by specified format.
render Render Kubernetes templates
Low-level management commands:
config Work with werf.yaml
managed-images Work with managed images which will be preserved during
cleanup procedure
host Work with werf cache and data of all projects on the host
machine
helm Manage application deployment with helm
cr Work with container registry: authenticate, list and remove
images, etc.
kubectl kubectl controls the Kubernetes cluster manager
Other commands:
synchronization Run synchronization server
completion Generate bash completion scripts
version Print version
Use "werf <command> --help" for more information about a given command.
Version: v1.2.205
➜ ~
```
### Setup Minikube for Werf
```
~ minikube start --vm=true --insecure-registry registry.example.com:80
😄 minikube v1.30.0 on Darwin 13.3 (arm64)
✨ Automatically selected the qemu2 driver. Other choices: virtualbox, ssh
🌐 Automatically selected the builtin network
❗ You are using the QEMU driver without a dedicated network, which doesn't support `minikube service` & `minikube tunnel` commands.
To try the dedicated network see: https://minikube.sigs.k8s.io/docs/drivers/qemu/#networking
💿 Downloading VM boot image ...
> minikube-v1.30.0-arm64.iso....: 65 B / 65 B []]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/qwen-coder-models</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/qwen-coder-models</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/kubernetes-tools-guide</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/kubernetes-tools-guide</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/k8sgpt</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/k8sgpt</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[ K8sgpt - Chatgpt base SRE
k8sgpt chat gpt for trubleshooting
### Install k8sgpt ai
```
~ brew tap k8sgpt-ai/k8sgpt
==> Tapping k8sgpt-ai/k8sgpt
Cloning into '/opt/homebrew/Library/Taps/k8sgpt-ai/homebrew-k8sgpt'...
remote: Enumerating objects: 86, done.
remote: Counting objects: 100% (86/86), done.
remote: Compressing objects: 100% (85/85), done.
remote: Total 86 (delta 51), reused 2 (delta 0), pack-reused 0
Receiving objects: 100% (86/86), 18.77 KiB | 6.26 MiB/s, done.
Resolving deltas: 100% (51/51), done.
Tapped 1 formula (14 files, 37.8KB).
➜ ~ brew install k8sgpt
==> Fetching k8sgpt-ai/k8sgpt/k8sgpt
==> Downloading https://github.com/k8sgpt-ai/k8sgpt/releases/download/v0.3.0/k8sgpt_Darwin_arm64.tar.gz
==> Downloading from https://objects.githubusercontent.com/github-production-release-asset-2e65be/617152691/d9f59995-7f6
################################################################################################################# 100.0%
==> Installing k8sgpt from k8sgpt-ai/k8sgpt
🍺 /opt/homebrew/Cellar/k8sgpt/0.3.0: 6 files, 55.5MB, built in 1 second
==> Running `brew cleanup k8sgpt`...
```
### K8s filters list
```
k8sgpt filters list
Active:
> Pod
> PersistentVolumeClaim
> StatefulSet
> CronJob
> Deployment
> ReplicaSet
> Service
> Ingress
> Node
Unused:
> NetworkPolicy
> HorizontalPodAutoScaler
> PodDisruptionBudget
```
### How K8sGPT works ?
K8sGPT uses analyzers to triage and diagnose issues in your cluster. It has a set of analyzers that are built in, but you will be able to write your own analyzers.
Built in analyzers
Enabled by default
- podAnalyzer
https://github.com/k8sgpt-ai/k8sgpt/blob/main/pkg/analyzer/pod.go
- search all namespaces for pods that are not running
- Check through container status to check for crashes or unready
- a container that is still being created or blocked due to conditions such as OOMKilled
- when pod is Running but its ReadinessProbe fails
- pvcAnalyzer
- PersistentVolumeClaim.ObjectMeta
- Error: value.FailureDetails
- rsAnalyzer
- Status of replicaset
- type of event
- reason of failure
```
Events:
Type Reason Age From Message
]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/cloudflared-tunnel</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/cloudflared-tunnel</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/cloud-native-learning-path</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/cloud-native-learning-path</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/arkade</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/arkade</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><](https://github.com/alexellis/arkade)
### Getting started with Arkade CLI
- Macos/Linux
```bash
~ curl -sLS https://get.arkade.dev | sudo sh
Password:
Downloading package https://github.com/alexellis/arkade/releases/download/0.9.7/arkade-darwin-arm64 as /tmp/arkade-darwin-arm64
Download complete.
Running with sufficient permissions to attempt to move arkade to /usr/local/bin
New version of arkade installed to /usr/local/bin
Creating alias 'ark' for 'arkade'.
_ _
__ _ _ __| | ____ _ __| | ___
/ _` | '__| |/ / _` |/ _` |/ _ \
| (_| | | | < (_| | (_| | __/
\__,_|_| |_|\_\__,_|\__,_|\___|
Open Source Marketplace For Developer Tools
Version: 0.9.7
Git Commit: 461fb7a9d05d7e3d13a39e03e1e38b6936cb15bd
🐳 arkade needs your support: https://github.com/sponsors/alexellis
➜ ~
```
### Get list of most needed tools & CLI for all Kubenetes Developer
```bash
➜ ~ arkade get
+]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/Okteto</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/Okteto</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><](https://github.com/okteto/okteto)
### Getting started with Oketo CLI
- Macos/Linux
```bash
➜ curl https://get.okteto.com -sSfL | sh
> Using Release Channel: stable
> Using Version: 2.14.0
> Downloading https://downloads.okteto.com/cli/stable/2.14.0/okteto-Darwin-arm64
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 74.8M 100 74.8M 0 0 20.0M 0 0:00:03 0:00:03 --:--:-- 20.0M
```
### Login into Okteto Cloud via Github Account
### Configuring Okteto CLI with Okteto Cloud
```bash
➜ okteto context
A context defines the default cluster/namespace for any Okteto CLI command.
Select the context you want to use:
Use the arrow keys to navigate: ↓ ↑ → ←
▸ https://cloud.okteto.com (Okteto Cloud) *
docker-desktop
minikube
multinode-pod-security
Create new context
```
Or use directly
```bash
➜ okteto context use https://cloud.okteto.com
✓ Using sangam14 @ cloud.okteto.com
```
2048 folder contain source code for 2048
```Dockerfile
FROM nginx
COPY 2048 /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
```
```Docker-Compose.yml
services:
game:
build: ./
expose:
- 8080:80
```
### Deploy Docker Compose on Okteto Cloud
okteto use [compose-spec](https://github.com/compose-spec/compose-spec) also its convert docker compose to kubernetes Manifest
here is more about docker compose on okteto (https://www.okteto.com/docs/reference/compose/)
```bash
okteto deploy --build
i Using sangam14 @ cloud.okteto.com as context
i Building 'Dockerfile' in tcp://buildkit.cloud.okteto.net:443...
[+] Building 7.8s (7/7) FINISHED
=> [internal] load build definition from buildkit-3366967893 0.9s
=> => transferring dockerfile: 137B 0.8s
=> [internal] load .dockerignore 0.7s
=> => transferring context: 2B 0.6s
=> [internal] load metadata for docker.io/library/nginx:latest 1.1s
=> [internal] load build context 2.5s
=> => transferring context: 603.29kB 2.5s
=> CACHED [1/2] FROM docker.io/library/nginx@sha256:2ab30d6ac53580a6db8b657abf0f68d75360ff5cc1670a85acb5bd85ba1b19 0.0s
=> => resolve docker.io/library/nginx@sha256:2ab30d6ac53580a6db8b657abf0f68d75360ff5cc1670a85acb5bd85ba1b19c0 0.0s
=> [2/2] COPY 2048 /usr/share/nginx/html 0.3s
=> exporting to image 2.5s
=> => exporting layers 0.1s
=> => exporting manifest sha256:79f1385595d70b82b4b5db52f5edddb1f4a06c79ded928926d48bb947a5322b6 0.0s
=> => exporting config sha256:ecf1dac7fbfaa6cdcb88dd2bbc616edbbc96459b078f15199fe3ddd564c481de 0.0s
=> => pushing layers 1.6s
=> => pushing manifest for registry.cloud.okteto.net/sangam14/okteto-2048-game:okteto@sha256:79f1385595d70b82b4b5d 0.8s
✓ Image 'registry.cloud.okteto.net/sangam14/okteto-2048-game:okteto' successfully pushed
✓ Kubernetes service 'game' created
✓ Endpoint 'game' created
✓ Service 'game' created
✓ Compose 'Okteto-2048' successfully deployed
✓ Development environment 'Okteto-2048' successfully deployed
i Run 'okteto up' to activate your development container
```
### Check it out Okteto Cloud
Okteto basically use technic all
### Check it out enpoints
you will see application running
### lets same app using kubernetes
okteto also provide capablities to build docker images remotely its means without installing docker you can now build docker images .
```bash
➜ okteto build -t sangam14/okteto-2048-game:okteto .
i Building 'Dockerfile' in tcp://buildkit.cloud.okteto.net:443...
[+] Building 5.9s (8/8) FINISHED
=> [internal] load build definition from buildkit-3724659360 1.5s
=> => transferring dockerfile: 180B 1.5s
=> [internal] load .dockerignore 0.9s
=> => transferring context: 2B 0.8s
=> [internal] load metadata for docker.io/library/nginx:latest 0.9s
=> CACHED [1/3] FROM docker.io/library/nginx@sha256:2ab30d6ac53580a6db8b657abf0f68d75360ff5cc1670a85acb5bd85ba1b19 0.0s
=> => resolve docker.io/library/nginx@sha256:2ab30d6ac53580a6db8b657abf0f68d75360ff5cc1670a85acb5bd85ba1b19c0 0.0s
=> [internal] load build context 0.9s
=> => transferring context: 4.66kB 0.5s
=> [2/3] RUN chmod +x /usr/sbin/nginx 0.9s
=> [3/3] COPY 2048 /usr/share/nginx/html 0.3s
=> exporting to image 2.1s
=> => exporting layers 0.3s
=> => exporting manifest sha256:ad9bdd97413eddbcd25fe2d1c55992796848a314e33165235a307726dcadaf8a 0.0s
=> => exporting config sha256:2f2ffc174a087bf9653029ec247279885a59e77887a259e592761ed4b06a3959 0.0s
=> => pushing layers 1.5s
=> => pushing manifest for docker.io/sangam14/okteto-2048-game:okteto@sha256:ad9bdd97413eddbcd25fe2d1c55992796848a 0.3s
✓ Image 'sangam14/okteto-2048-game:okteto' successfully pushed
```
### Okteto Support Kubernetes , Kustomize also Helm charts
```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
spec:
selector:
matchLabels:
app: nginx
replicas: 2
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: docker.io/sangam14/okteto-2048-game:okteto
ports:
- containerPort: 80
]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/Flannel</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/Flannel</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/blog/blog/CertManager</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/blog/blog/CertManager</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><](https://github.com/cert-manager/cert-manager)
### Start Minikube
```
minikube-certmanager git:(main) minikube start
😄 minikube v1.30.0 on Darwin 13.3.1 (arm64)
✨ Using the docker driver based on existing profile
👍 Starting control plane node minikube in cluster minikube
🚜 Pulling base image ...
🏃 Updating the running docker "minikube" container ...
❗ Image was not built for the current minikube version. To resolve this you can delete and recreate your minikube cluster using the latest images. Expected minikube version: v1.29.0 -> Actual minikube version: v1.30.0
🐳 Preparing Kubernetes v1.26.3 on Docker 23.0.2 ...
🔎 Verifying Kubernetes components...
▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5
🌟 Enabled addons: storage-provisioner, default-storageclass
🏄 Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default
```
### add jetstack helm
```
➜ minikube-certmanager git:(main) helm repo add jetstack https://charts.jetstack.io
"jetstack" has been added to your repositories
```
### update helm charts
```
➜ minikube-certmanager git:(main) helm repo update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "jetstack" chart repository
Update Complete. ⎈Happy Helming!⎈
```
### Install cert-manger CRD on test namespace
```
➜ minikube-certmanager git:(main) helm install \
cert-manager jetstack/cert-manager \
--namespace test \
--create-namespace \
--version v1.11.1 \
--set installCRDs=true
NAME: cert-manager
LAST DEPLOYED: Fri Apr 14 12:35:31 2023
NAMESPACE: test
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
cert-manager v1.11.1 has been deployed successfully!
In order to begin issuing certificates, you will need to set up a ClusterIssuer
or Issuer resource (for example, by creating a 'letsencrypt-staging' issuer).
More information on the different types of issuers and how to configure them
can be found in our documentation:
https://cert-manager.io/docs/configuration/
For information on how to configure cert-manager to automatically provision
Certificates for Ingress resources, take a look at the `ingress-shim`
documentation:
https://cert-manager.io/docs/usage/ingress/
```
### verify test namespace is active
```
➜ minikube-certmanager git:(main) kubectl get ns
NAME STATUS AGE
default Active 16h
kube-node-lease Active 16h
kube-public Active 16h
kube-system Active 16h
test Active 4m31s
```
### create self-signered certificate issuer
creating a self-signed certificate that our CA will use. To do so we will first need to create a self-signed certificate issuer.
```yml
apiVersion: cert-manager.io/v1
kind: Issuer
metadata:
name: selfsigned-issuer
namespace: test
spec:
selfSigned: {}
```
### kubectl apply cert manager ss issuer
```
minikube-certmanager git:(main) ✗ kubectl create -f cert-manager-ss-issuer.yaml
issuer.cert-manager.io/selfsigned-issuer created
```
### creat CA certificate
```
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
name: test-ca
namespace: test
spec:
isCA: true
commonName: test-ca
subject:
organizations:
- ACME Inc.
organizationalUnits:
- Widgets
secretName: test-ca-secret
privateKey:
algorithm: ECDSA
size: 256
issuerRef:
name: selfsigned-issuer
kind: Issuer
group: cert-manager.io
```
### kubectl apply cert-manager-ca-cert
```
➜ minikube-certmanager git:(main) ✗ kubectl create -f cert-manager-ca-cert.yaml
certificate.cert-manager.io/test-ca created
```
### checkt it out certificate
```
➜ minikube-certmanager git:(main) ✗ kubectl -n test get certificate
NAME READY SECRET AGE
test-ca True test-ca-secret 4m15s
```
### check it out secrets
```
➜ minikube-certmanager git:(main) ✗ kubectl -n test get secret test-ca-secret
NAME TYPE DATA AGE
test-ca-secret kubernetes.io/tls 3 5m1s
```
Excellent! This secret contains the ca.crt, tls.crt, and tls.key that belong to the CA itself.
### create ca issuer
Now it's time to create our CA issuer. Create a file called cert-manager-ca-issuer.yaml with the following:
```
apiVersion: cert-manager.io/v1
kind: Issuer
metadata:
name: test-ca-issuer
namespace: test
spec:
ca:
secretName: test-ca-secret
```
### apply ca issuer
```
➜ minikube-certmanager git:(main) ✗ kubectl create -f cert-manager-ca-issuer.yaml
issuer.cert-manager.io/test-ca-issuer created
```
### test ca cert
```
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
name: test-server
namespace: test
spec:
secretName: test-server-tls
isCA: false
usages:
- server auth
- client auth
dnsNames:
- "test-server.test.svc.cluster.local"
- "test-server"
issuerRef:
name: test-ca-issuer
]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/labs/labs/Learn-k8s</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/labs/labs/Learn-k8s</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[## pre-requisites
#### Includes configuring pre-requisites to install kubeadm
###### step 01) Enable following ports and protcols
```
on kubemaster : Open following ports : https://kubernetes.io/docs/reference/networking/ports-and-protocols/
sudo ufw status
sudo ufw enable
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw allow 22/tcp
sudo ufw allow 6443/tcp
sudo ufw allow 2379/tcp
sudo ufw allow 2380/tcp
sudo ufw allow 10250/tcp
sudo ufw allow 10259/tcp
sudo ufw allow 10257/tcp
sudo ufw allow 30000:32767/tcp
sudo ufw reload
sudo ufw status
###### ]]></description>
</item>
<item>
<title>undefined</title>
<link>https://kubernetesdaily.github.io/labs/labs/Learn-Helm</link>
<guid isPermaLink="true">https://kubernetesdaily.github.io/labs/labs/Learn-Helm</guid>
<pubDate>Tue, 29 Apr 2025 06:45:07 GMT</pubDate>
<description><![CDATA[
# Basics of Helm
git clone
### Install Helm 3
```
~ curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 11679 100 11679 0 0 32332 0 --:--:-- --:--:-- --:--:-- 32262
Downloading https://get.helm.sh/helm-v3.14.3-darwin-arm64.tar.gz
Verifying checksum... Done.
Preparing to install helm into /usr/local/bin
Password:
helm installed into /usr/local/bin/helm
```
### Creating the chart
```
(base) ➜ helm-workshop git:(main) helm create application-1
Creating application-1
```
### Structure of the chart
```
(base) ➜ application-1 git:(main) ✗ tree
.
├── Chart.yaml
├── charts
├── templates
│ ├── NOTES.txt
│ ├── _helpers.tpl
│ ├── deployment.yaml
│ ├── hpa.yaml
│ ├── ingress.yaml
│ ├── service.yaml
│ ├── serviceaccount.yaml
│ └── tests
│ └── test-connection.yaml
└── values.yaml
4 directories, 10 files
(base) ➜ application-1 git:(main) ✗
```
deleted unwanted files
```
base) ➜ application-1 git:(main) ✗ tree
.
├── Chart.yaml
├── charts
├── templates
│ ├── deployment.yaml
│ ├── service.yaml
│ └── tests
└── values.yaml
```
### Configuration the yamls files from scratch
create ngnix deployment with 3 replicas and use nodeport to expose ports
### how to deploy the chart
```
(base) ➜ application-1 git:(main) ✗ helm install chart-1 .
W0323 05:55:21.671543 6164 warnings.go:70] unknown field "spec.ports[0].nodeport"
NAME: chart-1
LAST DEPLOYED: Sat Mar 23 05:55:21 2024
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
### view the chart
(base) ➜ application-1 git:(main) ✗ kubectl get deploy,svc
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/my-deployememt 0/1 1 0 49s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 23m
service/my-service NodePort 10.102.58.218 <none> 80:31492/TCP 49s
(base) ➜ application-1 git:(main) ✗ kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
minikube Ready control-plane 24m v1.28.3 192.168.49.2 <none> Ubuntu 22.04.3 LTS 6.6.16-linuxkit docker://24.0.7
ip addess + port a
(base) ➜ application-1 git:(main) ✗ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
chart-1 default 1 2024-03-23 05:55:21.559484 +0530 IST deployed application-1-0.1.0 1.16.0
```
### delete the chart
```
(base) ➜ application-1 git:(main) ✗ helm uninstall chart-1
release "chart-1" uninstalled
```
# Deep Dive into Charts
#### create new chart
```
(base) ➜ helm-workshop git:(main) ✗ cd new-chart
(base) ➜ new-chart git:(main) ✗ ls
Chart.yaml charts templates values.yaml
(base) ➜ new-chart git:(main) ✗
```
### charts
if you see your file structure you don't see charts folder
```
.
├── Chart.yaml
├── charts
├── templates
│ ├── NOTES.txt
│ ├── _helpers.tpl
│ ├── deployment.yaml
│ ├── hpa.yaml
│ ├── ingress.yaml
│ ├── service.yaml
│ ├── serviceaccount.yaml
│ └── tests
│ └── test-connection.yaml
└── values.yaml
```
#### Notes.txt
its container notes for user how to run this helm charts
```
1. Get the application URL by running these commands:
{{- if .Values.ingress.enabled }}
{{- range $host := .Values.ingress.hosts }}
{{- range .paths }}
http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
{{- end }}
{{- end }}
{{- else if contains "NodePort" .Values.service.type }}
export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "new-chart.fullname" . }})
export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
echo http://$NODE_IP:$NODE_PORT
{{- else if contains "LoadBalancer" .Values.service.type }}
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "new-chart.fullname" . }}'
export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "new-chart.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
echo http://$SERVICE_IP:{{ .Values.service.port }}
{{- else if contains "ClusterIP" .Values.service.type }}
export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "new-chart.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
echo "Visit http://127.0.0.1:8080 to use your application"
kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
{{- end }}
```
#### _helper
this file nothing to do with kubernetes resource its just variable
```
{{/*
Expand the name of the chart.
*/}}
{{- define "new-chart.name" -}}
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
{{- end }}
{{/*
Create a default fully qualified app name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
If release name contains chart name it will be used as a full name.
*/}}
{{- define "new-chart.fullname" -}}
{{- if .Values.fullnameOverride }}
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
{{- else }}
{{- $name := default .Chart.Name .Values.nameOverride }}
{{- if contains $name .Release.Name }}
{{- .Release.Name | trunc 63 | trimSuffix "-" }}
{{- else }}
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
{{- end }}
{{- end }}
{{- end }}
{{/*
Create chart name and version as used by the chart label.
*/}}
{{- define "new-chart.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
{{- end }}
{{/*
Common labels
*/}}
{{- define "new-chart.labels" -}}
helm.sh/chart: {{ include "new-chart.chart" . }}
{{ include "new-chart.selectorLabels" . }}
{{- if .Chart.AppVersion }}
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
{{- end }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
{{- end }}
{{/*
Selector labels
*/}}
{{- define "new-chart.selectorLabels" -}}
app.kubernetes.io/name: {{ include "new-chart.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end }}
{{/*
Create the name of the service account to use
*/}}
{{- define "new-chart.serviceAccountName" -}}
{{- if .Values.serviceAccount.create }}
{{- default (include "new-chart.fullname" .) .Values.serviceAccount.name }}
{{- else }}
{{- default "default" .Values.serviceAccount.name }}
{{- end }}
{{- end }}
```
### chart.yaml
its container helm chart versioning
apiVersion: v2
name: new-chart
description: A Helm chart for Kubernetes
# A chart can be either an 'application' or a 'library' chart.
#
# Application charts are a collection of templates that can be packaged into versioned archives
# to be deployed.
#
# Library charts provide useful utilities or functions for the chart developer. They're included as
# a dependency of application charts to inject those utilities and functions into the rendering
# pipeline. Library charts do not define any templates and therefore cannot be deployed.
type: application
# This is the chart version. This version number should be incremented each time you make changes
# to the chart and its templates, including the app version.
# Versions are expected to follow Semantic Versioning (https://semver.org/)
version: 0.1.0
# This is the version number of the application being deployed. This version number should be
# incremented each time you make changes to the application. Versions are not expected to
# follow Semantic Versioning. They should reflect the version the application is using.
# It is recommended to use it with quotes.
appVersion: "1.16.0"
```
# Working with Multiple Values
#### create another values file
```
# Default values for application-1.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.
deployment:
replicaCount: 1
name: new-deployememt
image:
app: ngnix