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Curiefense nginx ingress install

Install Curiefense with NGINX Ingress

Prerequisites

  • Kubernetes cluster (I have one running on AWS)
  • Bucket (I'll use S3)

Note: the Kubernetes cluster should be large enough to run all dependencies (including ElasticSearch).

Prepare a bucket

On AWS, you can create a bucket using the AWS CLI:

# Use your bucket name
aws s3 mb s3://my-curiefense-test

Create a new user for Curiefense:

aws iam create-user --user-name my-curiefense-test

Create new credentials for the user:

aws iam create-access-key --user-name my-curiefense-test

Take note of the AccessKeyId and SecretAccessKey fields.

Create a policy.json file with the following content:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Sid0",
            "Effect": "Allow",
            "Action": "s3:*",
            "Resource": "arn:aws:s3:::my-curiefense-test/*"
        },
        {
            "Sid": "Sid1",
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket"
            ],
            "Resource": "arn:aws:s3:::my-curiefense-test"
        },
        {
            "Sid": "Sid2",
            "Effect": "Allow",
            "Action": [
                "s3:ListAllMyBuckets"
            ],
            "Resource": "*"
        }
    ]
}

Attach the policy to the user:

aws iam put-user-policy --user-name my-curiefense-test --policy-name CuriefenseS3Bucket --policy-document file://policy.json

Note: Do NOT use the above in production. Use IAM roles for service accounts instead.

Create a Curiefense namespace

Due to some limitations (syslog config in nginx image, etc) every component have to be installed in the same namespace.

Create a curiefense namespace:

kubectl create namespace curiefense

Install the Ingress Controller

Create a curiesync-secret.yaml file with the following content:

apiVersion: v1
kind: Secret
metadata:
  name: curiesync
data:
  curiesync.env: |
    export CURIE_BUCKET_LINK=s3://my-curiefense-test/prod/manifest.json
    export CURIE_S3_ACCESS_KEY=YOUR_ACCESS_KEY_ID
    export CURIE_S3_SECRET_KEY=YOUR_SECRET_ACCESS_KEY

Create the secret:

kubectl -n curiefense apply -f curiesync-secret.yaml

Create a values.ingress.yaml file with the following content:

controller:
  image:
    repository: curiefense/curiefense-nginx-ingress
    tag: e2bd0d43d9ecd7c6544a8457cf74ef1df85547c2

  volumes:
    - name: curiesync
      secret:
        secretName: curiesync

  volumeMounts:
    - name: curiesync
      mountPath: /etc/curiefense

If you don't already have the nginx-stable repo added to Helm, run the following commands:

helm repo add nginx-stable https://helm.nginx.com/stable
helm repo update

Install the ingress controller:

# This particular chart version installs the latest supported curiefense nginx ingress image
helm -n curiefense install --version 0.9.3 -f values.ingress.yaml ingress nginx-stable/nginx-ingress

Install Curiefense

Create a s3cfg-secret.yaml file with the following content:

apiVersion: v1
kind: Secret
metadata:
  name: s3cfg
type: Opaque
stringData:
  s3cfg: |
    [default]
    access_key = YOUR_ACCESS_KEY_ID
    secret_key = YOUR_SECRET_ACCESS_KEY

Create the secret:

kubectl -n curiefense apply -f s3cfg-secret.yaml

Create a values.curiefense.yaml file with the following content:

global:
  proxy:
    frontend: "nginx"

  settings:
    curieconf_manifest_url: "s3://my-curiefense-test/prod/manifest.json"

Clone the Curiefense Helm repository:

git clone git@github.com:curiefense/curiefense-helm.git

Install Curiefense:

helm install -n curiefense -f values.curiefense.yaml curiefense ./curiefense-helm/curiefense-helm/curiefense

Open a port forward to the UI server and start hacking:

kubectl -n curiefense port-forward deploy/uiserver 8080:80
open http://localhost:8080

Make some changes then head to the "Publish Changes" section and click "Publish configuration".

Install echoserver (optional)

It's time to put Curiefense to the test.

Create an echoserver.yaml file with the following content:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: echoserver
  labels:
    app.kubernetes.io/part-of: "curiefense"
spec:
  replicas: 1
  selector:
    matchLabels:
      app: echoserver
  template:
    metadata:
      labels:
        app: echoserver
        app.kubernetes.io/part-of: "curiefense"
    spec:
      containers:
        - image: gcr.io/google_containers/echoserver:1.10
          imagePullPolicy: IfNotPresent
          name: echoserver
          ports:
            - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: echoserver
  labels:
    app: echoserver
    service: echoserver
    app.kubernetes.io/part-of: "curiefense"
spec:
  ports:
    - port: 8080
      name: http
  selector:
    app: echoserver
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: echoserver
  labels:
    app.kubernetes.io/part-of: "curiefense"
  annotations:
    nginx.org/location-snippets: |
        access_by_lua_block {
            local session = require "lua.session_nginx"
            session.inspect(ngx)
        }
        log_by_lua_block {
            local session = require "lua.session_nginx"
            session.log(ngx)
        } 
spec:
  ingressClassName: nginx
  rules:
    - host: YOUR_HOST
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: echoserver
                port:
                  number: 8080

Based on how you configured the ingress controller and DNS, you should be able to access the echoserver at the host of your choosing.

Cleanup

Be careful, these commands are destructive!

Once you are done, you can cleanup the created resources from the cluster with the following commands:

kubectl delete -f echoserver.yaml
kubectl delete namespace curiefense

To delete all AWS resource:

aws iam delete-user-policy --user-name my-curiefense-test --policy-name CuriefenseS3Bucket
aws iam delete-access-key --user-name my-curiefense-test --access-key-id YOUR_ACCESS_KEY_ID
aws iam delete-user --user-name my-curiefense-test
aws s3 rb s3://my-curiefense-test --force

Notes

  • Curiefense nginx ingress image should be updated to the latest version (to support the latest Ingress API)
    • Tag images?
    • Move them to separate repo for readability?
  • Curieconf should support official AWS auth sources (env vars, instance profile, assume role, etc)
  • Upload helm charts to a chart repo
  • ElasticSearch should be optional
  • Required S3 permissions should be better documented
  • Is it possible to use an external Git repo?
  • The error message is a bit vague when the config server cannot publish the configuration due to insufficient permissions to list buckets.
  • CURIE_BUCKET_LINK is not very well documented
  • Ingress needs to be deployed in the same namespace at the moment (in order to push logs to curielogger) (it should be configurable)
  • A sidecar container might be better for pulling the configuration in the ingress container?
  • ElasticSearch doesn't work out of the box
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