AIOps

The article explains about the following for Watson AIOps.

• Installing BookInfo app
• Generating Load on BookInfo App
• Configuring FluentBit to push logs of BookInfo from cluster to Humio

The article is based on the the following

• IKS (IBM Kubernetes Service)
• Watson AI-Ops 3.1.0

1. Install BookInfo app in Kubernetes or Openshift

This section explains about how to install BookInfo app in Kubernetes

1. Bookinfo app Download

1. The bookinfo app is downloaded from the link https://raw.githubusercontent.com/istio/istio/master/samples/bookinfo/platform/kube/bookinfo.yaml

2. The images refered in the yaml is modified.

3. The productpage service is exposed as NodePort and value is 31010.

4. The above modified file is available in ./files/bookinfo.yaml

2. Create Namesapce

Create a Namespace called bookinfo

kubectl create ns bookinfo

3. Deploy Bookinfo

Apply the yaml to install the book info app.

kubectl apply -f ./files/bookinfo.yaml

4. Get EXTERNAL-IP

Get the EXTERNAL-IP to access the application

$ kubectl get nodes -o wide

NAME          STATUS     ROLES           AGE    VERSION           INTERNAL-IP   EXTERNAL-IP    OS-IMAGE   KERNEL-VERSION                CONTAINER-RUNTIME
10.73.12.79   Ready      master,worker   128d   v1.17.1+c5fd4e8   10.73.12.79   1.2.3.4   Red Hat    3.10.0-1127.19.1.el7.x86_64   cri-o://1.17.5-7.rhaos4.4.git6b97f81.el7
10.73.12.80   NotReady   master,worker   128d   v1.17.1+c5fd4e8   10.73.12.80   1.2.3.5   Red Hat    3.10.0-1127.19.1.el7.x86_64   cri-o://1.17.5-7.rhaos4.4.git6b97f81.el7
10.73.12.81   Ready      master,worker   128d   v1.17.1+c5fd4e8   10.73.12.81   1.2.3.6   Red Hat    3.10.0-1127.19.1.el7.x86_64   cri-o://1.17.5-7.rhaos4.4.git6b97f81.el7
10.73.12.90   Ready      master,worker   128d   v1.17.1+40d7dbd   10.73.12.90   1.2.3.7   Red Hat    3.10.0-1160.6.1.el7.x86_64    cri-o://1.17.5-11.rhaos4.4.git7f979af.el7

5. Access the app

Access the application using the below url.

http://1.2.3.4:31010/productpage

The productpage looks like this.

2. Generate Load for BookInfo app

1. Open the file ./files/01-create-load.sh

2. Update the bookinfo app url http://1.2.3.4 with the actual bookinfo app url of yours.

3. Make sure that apache bench is installed.

   https://httpd.apache.org/docs/2.4/programs/ab.html

4. Run the load script file

sh 01-create-load.sh

5. This load script runs for 5 to 15 minutes.

3. Installing FluentBit in IKS

The FluentBit can be downloaded using the info from the url.

https://docs.humio.com/docs/ingesting-data/log-formats/kubernetes/

We have downloaded the same and available in the folder ./files-bookinfo/humio-helm-charts

1. Update Override.yaml

1. Update the feld humioHostname

2. Update the field humioRepoName and port if required.

2. Update values.yaml

The ./humio-helm-charts/charts/humio-fluentbit/values.yaml should be updated as given below.

Path under the section [INPUT]. The below config allows only the logs from bookinfo namespace to push to humio

        Path             /var/log/containers/*bookinfo*.log

3. Install fluentbit

1. Create Namesapce

create a namespace called fluentbit-bk and get into the same namespace.

kubectl create ns fluentbit-bk
kubectl config set-context --current --namespace=fluentbit-bk

2. Helm Install fluentbit

Run the below command after replacing the TOKEN_VALUEEE with the humion ingest token.

helm install humio-bookinfo-fluentbit ./humio-helm-charts --namespace fluentbit-bk --set humio-fluentbit.token=TOKEN_VALUEEE --values ./override.yaml

3. UnInstall fluentbit

To delete the fluentbit, run the below command.

helm delete humio-bookinfo-fluentbit

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