merge files from the blockchain infra repo:

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bt3gl 2024-11-17 16:59:51 -08:00
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## deploying a node.js K8s cluster with kubectl
<br>
* build the image:
```
make build:
```
* run the container:
```
make run
```
* check whether the server worked:
```
make curl
```
* check container's status:
```
make status
```
<br>
---
### useful commands
<br>
* exec inside the container:
```
docker exec -i -t <container name from status> /bin/bash
```
* check images in disk:
```
docker images
```
<br>
----
### pushing the registry to kubernetes
<br>
* in a real production system, well want to build images in one place, then run these images in the Kubernetes cluster
* the system that images for distribution is called a **container registry**
* using a `yaml` Kubernetes files (for example, the one inside `node_server_example/`), you can now deploy the image with:
```
kubectl create -f node_example_kube_config.yaml
```
* after that, you are able to create the service with:
```
kubectl expose deployment node-app-test
```
* also, check out the service status with:
```
kubectl get services
```
<br>
---
### cleanning up
<br>
* removing the service and the deployment when you are done:
```
kubectl delete service node-app-test
kubectl delete deployment node-app-test
```