dev #27

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gitea: none
include_toc: true
---
# Based on
- [08a-HTTPS-min-TLS-version](../08a-HTTPS-min-TLS-version)
# Description
The previous example was modified set the gateway to enable for HTTP2 traffic.
https://stackoverflow.com/a/59610581
# Changelog
## Gateway
```yaml
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: helloworld-gateway
spec:
selector:
istio: ingressgateway
servers:
- port:
number: 443
name: secure-http2
protocol: HTTP2
hosts:
- "*"
tls:
mode: SIMPLE
credentialName: my-tls-cert-secret
minProtocolVersion: TLSV1_2
```
`<text>`
# Walkthrough
## Generate client and server certificate and key files
First step will be to generate the certificate and key files to be able to set them to the Gateway resource.
### Create a folder to store files.
Create the folder to contain the files that will be generated.
```shell
mkdir certfolder
```
### Create a certificate and a private key.
```shell
openssl req -x509 -sha256 -nodes -days 365 -subj '/O=Internet of things/CN=lb.net' -newkey rsa:2048 -keyout certfolder/istio.cert.key -out certfolder/istio.cert.crt
```
The files generated are the following:
```yaml
private-key: certfolder/istio.cert.key
root-certificate: certfolder/istio.cert.crt
```
The information set to the certificate generated is the following:
```yaml
Organization-name: Internet of things
CN: lb.net
```
### Create a TLS secret
At this step we create the tls secret `my-tls-cert-secret` on the namespace `istio-system`.
```shell
kubectl create -n istio-system secret tls my-tls-cert-secret \
--key=certfolder/istio.cert.key \
--cert=certfolder/istio.cert.crt
```
```text
secret/my-tls-cert-secret created
```
```text
service/helloworld created
deployment.apps/helloworld-nginx created
gateway.networking.istio.io/helloworld-gateway created
virtualservice.networking.istio.io/helloworld-vs created
```
> **Note:**\
> It's Important that the secret is located in the same namespace as the Load Balancer used. In my case is the `istio-system`, but it will vary based on the environment.
## Deploy resources
```shell
kubectl apply -f ./
```
```text
service/helloworld created
deployment.apps/helloworld-nginx created
gateway.networking.istio.io/helloworld-gateway created
virtualservice.networking.istio.io/helloworld-vs created
```
## Test the service
### http2
#### Curl HTTP1
```shell
curl 192.168.1.50/helloworld -s -o=/dev/null -w 'http_version: %{http_version}\nstatus_code: %{response_code}\n' -HHOST:http2.lb --http1.0
```
```text
http_version: 1.1
status_code: 426
```
#### Curl HTTP1.1
```shell
curl 192.168.1.50/helloworld -s -o=/dev/null -w 'http_version: %{http_version}\nstatus_code: %{response_code}\n' -HHOST:http2.lb --http1.1
```
```text
http_version: 1.1
status_code: 200
```
#### Curl HTTP2
```shell
curl 192.168.1.50/helloworld -s -o=/dev/null -w 'http_version: %{http_version}\nstatus_code: %{response_code}\n' -HHOST:http2.lb --http2
```
```text
http_version: 1.1
status_code: 200
```
### http1-web
#### Curl HTTP1
```shell
curl 192.168.1.50/helloworld -s -o=/dev/null -w 'http_version: %{http_version}\nstatus_code: %{response_code}\n' -HHOST:http1.lb --http1.0
```
```text
http_version: 1.1
status_code: 426
```
#### Curl HTTP1.1
```shell
curl 192.168.1.50/helloworld -s -o=/dev/null -w 'http_version: %{http_version}\nstatus_code: %{response_code}\n' -HHOST:http1.lb --http1.1
```
```text
http_version: 1.1
status_code: 200
```
#### Curl HTTP2
```shell
curl 192.168.1.50/helloworld -s -o=/dev/null -w 'http_version: %{http_version}\nstatus_code: %{response_code}\n' -HHOST:http1.lb --http2
```
```text
http_version: 1.1
status_code: 200
```
## Cleanup
```shell
kubectl delete -f ./
```
```text
service "helloworld" deleted
deployment.apps "helloworld-nginx" deleted
gateway.networking.istio.io "helloworld-gateway" deleted
virtualservice.networking.istio.io "helloworld-vs" deleted
```
# Links of Interest
- https://istio.io/latest/docs/reference/config/networking/gateway/#ServerTLSSettings-TLSProtocol
- https://stackoverflow.com/a/51279606
- https://istio.io/latest/docs/reference/config/networking/destination-rule/#ConnectionPoolSettings-HTTPSettings-H2UpgradePolicy
docker buildx build --push --platform linux/arm/v7,linux/arm64/v8,linux/amd64 --tag registery.filter.home:5000/https-demo:latest -f Dockerfile
docker buildx build --push --platform linux/arm/v7,linux/arm64/v8,linux/amd64 --tag registery.filter.home:5000/https-demo:latest .
[+] Building 0.0s (0/0)
ERROR: multiple platforms feature is currently not supported for docker driver. Please switch to a different driver (eg. "docker buildx create --use")
---
## Create the Dockerfile
```bash
FROM ubuntu/apache2
RUN apt-get update && \
apt-get install apache2 openssl -y && \
a2ensite default-ssl && \
a2enmod ssl && \
echo "<h2>Howdy</h2>" | tee /var/www/html/index.html
RUN /usr/bin/printf "<VirtualHost *:80>\n\
ServerAdmin webmaster@localhost\n\
DocumentRoot /var/www/html\n\
ErrorLog \${APACHE_LOG_DIR}/error.log\n\
CustomLog \${APACHE_LOG_DIR}/access.log combined\n\
</VirtualHost>\n\
<VirtualHost *:443>\n\
ServerAdmin webmaster@localhost\n\
DocumentRoot /var/www/html\n\
ErrorLog \${APACHE_LOG_DIR}/error.log\n\
CustomLog \${APACHE_LOG_DIR}/access.log combined\n\
SSLEngine on\n\
SSLCertificateFile /etc/ssl/certs/ssl-cert-snakeoil.pem\n\
SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key\n\
</VirtualHost>" > /etc/apache2/sites-available/000-default.conf
RUN openssl req -x509 -sha256 -nodes -days 358000 -subj '/O=SSL EXAMPLE' -newkey rsa:2048 -keyout /etc/ssl/private/ssl-cert-snakeoil.key -out /etc/ssl/certs/ssl-cert-snakeoil.pem
```
## Build the image
Due to my Kubernetes cluster environment, where I am using Orange 5, their architecture is arm7, and for such, I require to compile such images.
For my own commodity, I have used a raspberry pi 4 to build this images.
The images where pushed to a local registry server, and afterwards the Kubernetes cluster will pull such image.
```shell
docker build --tag https-demo:armv7 .
```
```text
docker build --tag https-demo:armv7 . --no-cache
[+] Building 16.5s (8/8) FINISHED
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 1.09kB 0.0s
=> [internal] load metadata for docker.io/ubuntu/apache2:latest 0.4s
=> CACHED [1/4] FROM docker.io/ubuntu/apache2@sha256:0a5e7179fa8fccf17843a8862e58ac783628b7d448cd68fda8fb1e 0.0s
=> [2/4] RUN apt-get update && apt-get install apache2 openssl -y && a2ensite default-ssl && a2enmod ssl & 12.0s
=> [3/4] RUN /usr/bin/printf "<VirtualHost *:80>\n ServerAdmin webmaster@localhost\n DocumentRoot /var/www/ 0.7s
=> [4/4] RUN openssl req -x509 -sha256 -nodes -days 358000 -subj '/O=SSL EXAMPLE' -newkey rsa:2048 -keyout 2.4s
=> exporting to image 1.0s
=> => exporting layers 1.0s
=> => writing image sha256:591c6d233100a48bf132eef7a792942cfd0b7057817c4ac5e156c1d33e24cd89 0.0s
=> => naming to docker.io/library/https-demo:armv7 0.0s
```
## Tag the image
```shell
docker image tag https-demo:armv7 registery.filter.home/https-demo:armv7
```
## Upload to the registery server
```text
docker image push registery.filter.home:5000/https-demo:armv7
The push refers to repository [registery.filter.home:5000/https-demo]
c6d858706b08: Pushed
9e077e0202f0: Pushed
6ffc708d0cf3: Pushed
69e01b4bf4d7: Pushed
17c5b30f3843: Pushed
0b9f60fbcaf1: Pushed
armv7: digest: sha256:d8c81c27f23bf3945ae8a794c82182f9e6c48ec927f388fdf4a88caa0e284bd1 size: 1578
```
## ?
curl: (35) OpenSSL/3.0.8: error:0A00010B:SSL routines::wrong version numbe
---
Has apache2 installed with a default certificate.
Port 80 visible for HTTP
Port 443 visible for HTTPS.

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-----BEGIN CERTIFICATE-----
MIIDPTCCAiWgAwIBAgIUNR/VCRO6PPCYDZKIApOQ4n/d7OUwDQYJKoZIhvcNAQEL
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0j6OhMfBuYikiRQl1dfZltg=
-----END CERTIFICATE-----

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-----BEGIN PRIVATE KEY-----
MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCihJ9088mI1t1v
zCygndfMoKIyloDddoMTcWXEBQb4IT0zbBErfmgbiNTdV84/gb8bOQbOBVXDFwJD
pi7b8G3egPaMGcHfBPTgyq4WrlJPXjUH+mb0hdhnkKCN/UhQi9jRCjszJhGMRpX/
ONshWksYKzMdhoq0rKhBD4bLUiwBJXY1O+6UPTp4iB7mC3wOgGpgM+dYVz8raRom
kagJv8SL0bTxbgPaVyR4URLVBkvzuj9r/fNGALj/IZdyyKTjPcVKHePsfRB3wVxy
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49OKVGZRjHierSA2yZl5fQ==
-----END PRIVATE KEY-----

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apiVersion: v1
kind: Service
metadata:
name: helloworld
labels:
app: helloworld
service: helloworld
spec:
ports:
- port: 8080
name: tcp-a
targetPort: 80
protocol: TCP
- port: 8443
name: tcp-b
targetPort: 443
protocol: TCP
selector:
app: helloworld
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: helloworld-nginx
labels:
app: helloworld
spec:
replicas: 1
selector:
matchLabels:
app: helloworld
template:
metadata:
labels:
app: helloworld
sidecar.istio.io/inject: "true"
spec:
containers:
- name: helloworld
# image: nginx
image: oriolfilter/https-apache-demo:armv7
resources:
requests:
cpu: "100m"
imagePullPolicy: IfNotPresent #Always
ports:
- containerPort: 80
- containerPort: 443

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apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: helloworld-gateway
spec:
selector:
istio: ingressgateway
servers:
# - port:
# number: 443
# name: secure-http2
# protocol: HTTP2
# hosts:
# - "*"
- port:
number: 80
name: tcp-2
protocol: TCP
hosts:
- "*"
- port:
number: 443
name: tcp-i
protocol: TCP
hosts:
- "*"
# tls:
# credentialName: my-tls-cert-secret
# minProtocolVersion: TLSV1_2
# mode: PASSTHROUGH
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: helloworld-vs
spec:
hosts:
- "*"
gateways:
- helloworld-gateway
http:
- match:
- port: 80
# hosts:
# - "hello.si"
name: helloworld
route:
- destination:
host: helloworld
port:
number: 80
tcp:
- match:
- port: 80
route:
- destination:
host: helloworld
port:
number: 8080
- match:
- port: 443
route:
- destination:
host: helloworld
port:
number: 8443
#
# tls:
# - match:
# - port: 443
# sniHosts:
# - "hello.si"
## - uri:
## exact: /helloworld
# route:
# - destination:
# host: helloworld
# port:
# number: 8443
## protocol: HTTPS
## rewrite:
## uri: "/"