A visual overview of Kubernetes architecture and Prometheus metrics

Last update: Oct 11, 2022

Overview

A visual overview of Kubernetes architecture and Prometheus metrics.

Structure

Navigate through the structures page to easily see your control planes and worker nodes with all their pods inside. Click on the components to see more details about its metadata, status, and specifications. Easily find information regarding the image IDs or IP addresses of anything from containers to ingresses.

Metrics

Get the state of your cluster at a glance with our curated metrics dashboard.

Custom Metrics

Use our custom metrics page to use our PROMQL autocomplete feature to query any metrics you want.

Alerts

All of your Prometheus alerts including your custom ones are displayed here in the Alerts tab. Find out if any alerts are firing and which rule groups they fall under.

Getting started

Deploying KUR8

KUR8 requires your Kubernetes cluster to already be set up and running.

An image of the application has been pushed to Docker Hub for those who would like to build the image directly from the public repository.

We recommend deploying KUR8 directly to your Kubernetes cluster through kubectl using our config file kur8-depl.yaml.

kubectl apply -f kur8-depl.yaml

In addition, in order to allow reading resources of the API, you must configure a set of permissions. We have set up a YAML file using RBAC authorization which you can apply directly to your Kubernetes cluster using the command line: fabric8-rbac.yaml

kubectl apply -f fabric8-rbac.yaml

Use a port forward command to open up KUR8 on port 3068.

kubectl port-forward deployment/kur8-depl 3068:3068

Then, open your web browser to http://localhost:3068.

The structures tab on the left will query your Kubernetes API to view the cluster's architecture.

Deploying Prometheus

If you don't have your instance of Prometheus installed begin by cloning this repo:

In KUR8 directory run:

kubectl create -f infra/manifests/setup

Once setup is complete run:

kubectl create -f infra/manifests/

If you want to connect Kur8 to Prometheus open up the port by:

kubectl --namespace monitoring port-forward svc/prometheus-k8s 9090

You may also view the Prometheus tab in KUR8

localhost:3068

to view and create your custom dashboard.

Contributors

Linkedin Jimmy Ngo • jimmycngo

Linkedin Ivy Yu • ivy118

Linkedin Steven Del Rosario • stevendelro

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Comments

got enzyme test working with redux connected components
Fixed the enzyme issue, by:

using jsdom test environment instead of default node test environment.

when doing a shallow render use .children().dive() to render and wrap components

Still having issues simulating an onClick in redux connected component:

Mocking and Spying on the useState function call doesn't seem to work, maybe I can try reading the prop directly
opened by jimmycngo 1
Reconfigured structures reducer to handle edge cases

Can now handle edge cases where app is not deployed through skaffold and if there are no ingresses.

Also adding back in podsbynamespace component test

opened by jimmycngo 0
kur8 not working - latest version

Hey

i tried to install kur8 using the you installation guide (also tried to change the service to be Nodeport) but the UI not really loading. I get just white screen (http code 200). (chrome, firefox and safari)

I tried to point the service to the pod with port 3000 and port 3068 (as i saw in logs). no errors in logs..

installation path: https://github.com/oslabs-beta/Kur8/blob/dev/infra/k8s/kur8-depl.yaml https://github.com/oslabs-beta/Kur8/blob/dev/infra/k8s/fabric8-rbac.yaml

➜ ~ curl -o /dev/null -k -s -w '%{http_code}\n' http://10.187.84.10:30771/ 200

logs:

[email protected] dev concurrently "cross-env NODE_ENV=development webpack serve --hot --open" "cross-env NODE_ENV=development nodemon ./server/index.js" [1] [nodemon] 2.0.12 [1] [nodemon] to restart at any time, enter rs [1] [nodemon] watching path(s): . [1] [nodemon] watching extensions: js,mjs,json [1] [nodemon] starting node ./server/index.js [1] jj [1] Listening on port: 3000 [0] ℹ ｢wds｣: Project is running at http://localhost:3068/ [0] ℹ ｢wds｣: webpack output is served from /build/ [0] ℹ ｢wds｣: Content not from webpack is served from /app/client/public [1] (node:61) [DEP0152] DeprecationWarning: Custom PerformanceEntry accessors are deprecated. Please use the detail property. [1] (Use node --trace-deprecation ... to show where the warning was created) [0] ℹ ｢wdm｣: asset bundle.js 4.85 MiB [emitted] (name: main) [0] asset index.html 233 bytes [emitted] [0] orphan modules 441 KiB [orphan] 279 modules [0] runtime modules 29.9 KiB 15 modules [0] modules by path ./node_modules/ 3.59 MiB [0] cacheable modules 3.58 MiB 689 modules [0] ./node_modules/webpack/hot/ sync nonrecursive ^./log$ 170 bytes [built] [code generated] [0] ./node_modules/moment/locale/ sync ^./.$ 3.21 KiB [optional] [built] [code generated] [0] modules by path ./client/src/ 241 KiB [0] modules by path ./client/src/components/ 158 KiB 23 modules [0] modules by path ./client/src/pages/ 33.2 KiB [0] modules by path ./client/src/pages/AlertsPage/.js 14.4 KiB 2 modules [0] modules by path ./client/src/pages/GetStartedPage/.js 10.5 KiB 2 modules [0] modules by path ./client/src/reducers/.js 29.8 KiB 7 modules [0] modules by path ./client/src/actions/.js 14.4 KiB 4 modules [0] modules by path ./client/src/.js 5.79 KiB 3 modules [0] webpack 5.47.1 compiled successfully in 26658 ms [0] ℹ ｢wdm｣: Compiled successfully.

opened by MatanAmoyal 3

How to configure KUR8 to my own hosted prometheus

I have deployed KUR8 v1.0.0 to EKS v1.18 into monitoring namespace but the application was misbehaving. What is I don't know is how to point KUR8 to my prometheus service kube-prometheus-stack-prometheus:9090?

How I deployed:

kubectl -n monitoring apply -f fabric8-rbac.yaml
kubectl -n monitoring apply -f kur8-depl.yaml

# Then port-forward to access the app
kubectl -n monitoring port-forward deployment/kur8-depl 3068:3068

The app logs

ur8-depl-7c8f78b546-w88bk kur8 
kur8-depl-7c8f78b546-w88bk kur8 > [email protected] dev
kur8-depl-7c8f78b546-w88bk kur8 > concurrently "cross-env NODE_ENV=development webpack serve --hot --open" "cross-env NODE_ENV=development nodemon ./server/index.js"
kur8-depl-7c8f78b546-w88bk kur8 
kur8-depl-7c8f78b546-w88bk kur8 [1] [nodemon] 2.0.12
kur8-depl-7c8f78b546-w88bk kur8 [1] [nodemon] to restart at any time, enter `rs`
kur8-depl-7c8f78b546-w88bk kur8 [1] [nodemon] watching path(s): *.*
kur8-depl-7c8f78b546-w88bk kur8 [1] [nodemon] watching extensions: js,mjs,json
kur8-depl-7c8f78b546-w88bk kur8 [1] [nodemon] starting `node ./server/index.js`
kur8-depl-7c8f78b546-w88bk kur8 [1] jj
kur8-depl-7c8f78b546-w88bk kur8 [1] Listening on port: 3000
kur8-depl-7c8f78b546-w88bk kur8 [0] ℹ ｢wds｣: Project is running at http://localhost:3068/
kur8-depl-7c8f78b546-w88bk kur8 [0] ℹ ｢wds｣: webpack output is served from /build/
kur8-depl-7c8f78b546-w88bk kur8 [0] ℹ ｢wds｣: Content not from webpack is served from /app/client/public
kur8-depl-7c8f78b546-w88bk kur8 [0] ℹ ｢wdm｣: asset bundle.js 4.85 MiB [emitted] (name: main)
kur8-depl-7c8f78b546-w88bk kur8 [0] asset index.html 233 bytes [emitted]
kur8-depl-7c8f78b546-w88bk kur8 [0] orphan modules 441 KiB [orphan] 279 modules
kur8-depl-7c8f78b546-w88bk kur8 [0] runtime modules 29.9 KiB 15 modules
kur8-depl-7c8f78b546-w88bk kur8 [0] modules by path ./node_modules/ 3.59 MiB
kur8-depl-7c8f78b546-w88bk kur8 [0]   cacheable modules 3.58 MiB 689 modules
kur8-depl-7c8f78b546-w88bk kur8 [0]   ./node_modules/webpack/hot/ sync nonrecursive ^\.\/log$ 170 bytes [built] [code generated]
kur8-depl-7c8f78b546-w88bk kur8 [0]   ./node_modules/moment/locale/ sync ^\.\/.*$ 3.21 KiB [optional] [built] [code generated]
kur8-depl-7c8f78b546-w88bk kur8 [0] modules by path ./client/src/ 241 KiB
kur8-depl-7c8f78b546-w88bk kur8 [0]   modules by path ./client/src/components/ 158 KiB 23 modules
kur8-depl-7c8f78b546-w88bk kur8 [0]   modules by path ./client/src/pages/ 33.2 KiB
kur8-depl-7c8f78b546-w88bk kur8 [0]     modules by path ./client/src/pages/AlertsPage/*.js 14.4 KiB 2 modules
kur8-depl-7c8f78b546-w88bk kur8 [0]     modules by path ./client/src/pages/GetStartedPage/*.js 10.5 KiB 2 modules
kur8-depl-7c8f78b546-w88bk kur8 [0]   modules by path ./client/src/reducers/*.js 29.8 KiB 7 modules
kur8-depl-7c8f78b546-w88bk kur8 [0]   modules by path ./client/src/actions/*.js 14.4 KiB 4 modules
kur8-depl-7c8f78b546-w88bk kur8 [0]   modules by path ./client/src/*.js 5.79 KiB 3 modules
kur8-depl-7c8f78b546-w88bk kur8 [0] webpack 5.47.1 compiled successfully in 10938 ms
kur8-depl-7c8f78b546-w88bk kur8 [0] ℹ ｢wdm｣: Compiled successfully.
kur8-depl-7c8f78b546-w88bk kur8 [1] (node:61) [DEP0152] DeprecationWarning: Custom PerformanceEntry accessors are deprecated. Please use the detail property.
kur8-depl-7c8f78b546-w88bk kur8 [1] (Use `node --trace-deprecation ...` to show where the warning was created)
kur8-depl-7c8f78b546-w88bk kur8 [1] Wed, 11 Aug 2021 08:00:59 GMT express deprecated res.send(status, body): Use res.status(status).send(body) instead at file:/app/server/index.js:47:23
kur8-depl-7c8f78b546-w88bk kur8 [1] node:internal/errors:464
kur8-depl-7c8f78b546-w88bk kur8 [1]     ErrorCaptureStackTrace(err);
kur8-depl-7c8f78b546-w88bk kur8 [1]     ^
kur8-depl-7c8f78b546-w88bk kur8 [1] 
kur8-depl-7c8f78b546-w88bk kur8 [1] RangeError [ERR_HTTP_INVALID_STATUS_CODE]: Invalid status code: error found in get request to /podList
kur8-depl-7c8f78b546-w88bk kur8 [1]     at new NodeError (node:internal/errors:371:5)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at ServerResponse.writeHead (node:_http_server:275:11)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at ServerResponse._implicitHeader (node:_http_server:266:8)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at write_ (node:_http_outgoing:763:9)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at ServerResponse.end (node:_http_outgoing:852:5)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at ServerResponse.send (/app/node_modules/express/lib/response.js:221:10)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at ServerResponse.json (/app/node_modules/express/lib/response.js:267:15)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at ServerResponse.send (/app/node_modules/express/lib/response.js:158:21)
kur8-depl-7c8f78b546-w88bk kur8 [1]     at file:///app/server/index.js:47:23
kur8-depl-7c8f78b546-w88bk kur8 [1]     at processTicksAndRejections (node:internal/process/task_queues:96:5) {
kur8-depl-7c8f78b546-w88bk kur8 [1]   code: 'ERR_HTTP_INVALID_STATUS_CODE'
kur8-depl-7c8f78b546-w88bk kur8 [1] }
kur8-depl-7c8f78b546-w88bk kur8 [1] [nodemon] app crashed - waiting for file changes before starting...
kur8-depl-7c8f78b546-w88bk kur8 [0] [HPM] Error occurred while trying to proxy request /podList from localhost:3068 to http://localhost:3000 (ECONNRESET) (https://nodejs.org/api/errors.html#errors_common_system_errors)
kur8-depl-7c8f78b546-w88bk kur8 [0] [HPM] Error occurred while trying to proxy request /deploymentList from localhost:3068 to http://localhost:3000 (ECONNREFUSED) (https://nodejs.org/api/errors.html#errors_common_system_errors)
kur8-depl-7c8f78b546-w88bk kur8 [0] [HPM] Error occurred while trying to proxy request /nodeList from localhost:3068 to http://localhost:3000 (ECONNREFUSED) (https://nodejs.org/api/errors.html#errors_common_system_errors)

opened by pio2pio 2

Releases(1.0.0)

1.0.0(Aug 5, 2021)

Source code(tar.gz)
Source code(zip)

Owner

OSLabs Beta

GitHub

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