udacity / cnand_nd064_c4_observability_starter_files Goto Github PK

Issues with deploying trial due to undefined imports.

Running flake8 revealed.

@SudKul - the yaml is actually a cat to kubectl pipe. This file has been introduced in https://github.com/udacity/CNAND_nd064_C4_Observability_Starter_Files/blob/850f0c23867ce391c32b101aa00dd35ef0065abf/Exercise_Starter_Files/hotrod.yaml

Issue regarding OpenSuse image version constraint.

System Info

Hi, @thejaysmith cc: @SudKul

See the knowledge question below, I have submitted multiple Mentor Content Escalation forms wrt to the inconsistencies in this project and lesson. As a mentor, I am in the firing line!

Note: redis-opentracing depends on opentracing >=2.0,<2.1': https://github.com/opentracing-contrib/python-redis/blob/master/setup.py#L16+L19
This becomes an issue when trying to install jaeger-client All versions

$ cat tracing-extra/app/requirements.txt

certifi==2020.12.5
chardet==4.0.0
click==7.1.2
Flask-OpenTracing==1.1.0
Flask==1.1.2
gunicorn==20.0.4
idna==2.10
itsdangerous==1.1.0
jaeger-client==4.4.0
Jinja2==2.11.2
MarkupSafe==1.1.1
opentracing==2.4.0
redis-opentracing==1.0.0
redis==3.5.3
requests==2.25.1
six==1.15.0
threadloop==1.0.2
thrift==0.13.0
tornado==6.1
urllib3==1.26.2
Werkzeug==1.0.1

Ran: kubectl apply -Rf manifests/app/

Status of pods: CrashLoopBackOff

Due to missing dependency/

Then, I tried running the app.py inside the container.

The verified if prometheus submodule is available on jaeger_client==4.3.0, which isn't

The Fix

Add prometheus_client==0.9.0 into the requirements.txt

Requirement lacking redis-opentracing. Please add this: redis-opentracing==1.0.0

Theres a IP Table bug in OpenSUSE that can be resolved by pinning k3s version.

https://github.com/k3s-io/k3s/releases/tag/v1.19.5+k3s1

https://knowledge.udacity.com/questions/500205

Not sure if this is by design or a copy and paste gone wrong

At the moment when you deploy the cluster, the backend service can not get port assigned. This is the project

apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend-app
  annotations:
    "sidecar.jaegertracing.io/inject": "true"
spec:
  replicas: 1
  selector:
    matchLabels:
      app: backend
  template:
    metadata:
      labels:
        app: backend
    spec:
      containers:
      - name: backend
        image: martinezi/metrics-backend
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: backend-service
spec:
  selector:
    app: backend
  ports:
    - port: 80
      targetPort: 8080
  type: LoadBalancer

➜  Project_Starter_Files-Building_a_Metrics_Dashboard git:(main) ✗ kubectl describe pod svclb-backend-service-zjnx4
Name:           svclb-backend-service-zjnx4
Namespace:      default
Priority:       0
Node:           <none>
Labels:         app=svclb-backend-service
                controller-revision-hash=9fcfcdcf5
                pod-template-generation=1
                svccontroller.k3s.cattle.io/svcname=backend-service
Annotations:    <none>
Status:         Pending
IP:             
IPs:            <none>
Controlled By:  DaemonSet/svclb-backend-service
Containers:
  lb-port-80:
    Image:      rancher/klipper-lb:v0.1.2
    Port:       80/TCP
    Host Port:  80/TCP
    Environment:
      SRC_PORT:    80
      DEST_PROTO:  TCP
      DEST_PORT:   80
      DEST_IP:     10.43.116.140
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-dq4k4 (ro)
Conditions:
  Type           Status
  PodScheduled   False 
Volumes:
  default-token-dq4k4:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-dq4k4
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     CriticalAddonsOnly op=Exists
                 node-role.kubernetes.io/master:NoSchedule op=Exists
                 node.kubernetes.io/disk-pressure:NoSchedule op=Exists
                 node.kubernetes.io/memory-pressure:NoSchedule op=Exists
                 node.kubernetes.io/not-ready:NoExecute op=Exists
                 node.kubernetes.io/pid-pressure:NoSchedule op=Exists
                 node.kubernetes.io/unreachable:NoExecute op=Exists
                 node.kubernetes.io/unschedulable:NoSchedule op=Exists
Events:
  Type     Reason            Age   From               Message
  ----     ------            ----  ----               -------
  Warning  FailedScheduling  6h6m  default-scheduler  0/1 nodes are available: 1 node(s) didn't have free ports for the requested pod ports.

I have done some research, and it seems traefik is already is using the port. I am not sure how to proceed, to get the backend to work.

For the manifests in app folder, image referred is ghcr.io/thejaysmith/mybackend:v1
I am able to pull myfrontend but for mybackend and mytrial, it says denied

docker pull ghcr.io/thejaysmith/mytrial:v1
Error response from daemon: Get https://ghcr.io/v2/thejaysmith/mytrial/manifests/v1: denied

Url -
https://github.com/udacity/CNAND_nd064_Building_a_Metrics_Dashboard_Starter_Files/blob/master/manifests/app/backend.yaml#L17

Not sure if this is related to the content under this repo, but it's related to the lessons or project setup

Please note that version 0.7 of "prometheus-community/kube-prometheus-stack" is not available.

The only available versions of "prometheus-community/kube-prometheus-stack" are as follows
helm search repo prometheus -l | grep "prometheus-community/kube-prometheus-stack"

curl-ing localhost:30048 issues 500 Internal Server Error due an exception on trial/app.py, missing the main.html template.

Running pods

Error encountered

The first setup for completing the project is start the virtual machine using:

vagrant up

Nevertheless, the Vagrantfile states:

config.vm.provision "k3s shell script", type: "shell", path: "scripts/k3s.sh", args: args

For consistency, it should be:

config.vm.provision "k3s shell script", type: "shell", path: "k3s.sh", args: args

Another option is ask the student to create the scripts folder and move/copy the bash script there.