OpenFaas<\/strong> is an open-source framework for building serverless functions with Docker and Kubernetes.<\/p>\n\n\n\n Kubernetes<\/strong> is an open-source portable and extensible platform that is used for automation deployment, scaling e.t.c<\/p>\n\n\n\n The main features<\/strong> of serverless architectures are:<\/p>\n\n\n\n Serverless architectures are used in:<\/p>\n\n\n\n Now we are set to begin this guide. By the end of this guide, you should be able to deploy OpenFaaS Serverless Framework on Kubernetes.<\/p>\n\n\n\n [Skip if you already have Kubernetes Cluster<\/span>]<\/p>\n\n\n\n In this guide, we will install and set up the Kubernetes cluster using Minikube. If you prefer other methods of deploying Kubernetes Cluster checkout our guides in the following links:<\/p>\n\n\n\n When doing Minikube Kubernetes Cluster, first install snap:<\/p>\n\n\n\n Create a symbolic link for snap as shown.<\/p>\n\n\n\n Start an enable snapd service:<\/p>\n\n\n\n Install kubectl using snap<\/p>\n\n\n\n Install MiniKube on your system.<\/p>\n\n\n\n Change permissions and copy it to the path \/usr\/local\/bin\/<\/strong><\/em><\/p>\n\n\n\n Install minikube as shown.<\/p>\n\n\n\n Check the version of Minikube:<\/p>\n\n\n\n Now run the cluster on your system. Ensure that you have a hypervisor i.e VirtualBox\/KVM <\/strong> installed on your system.<\/p>\n\n\n\n Install Virtualbox<\/strong> on your system with the aid of the guides below.<\/p>\n\n\n\n Install KVM<\/strong> hypervisor on your system with aid from the guides below<\/p>\n\n\n\n With KVM\/Virtualbox installed, run Minikube specifying the driver to use from your hypervisor as below<\/p>\n\n\n\n Run the commands below to start Minikube instance using VirtualBox driver:<\/p>\n\n\n\n 2. With KVM driver<\/strong><\/p>\n\n\n\n Add your user to the libvirt<\/strong> group <\/p>\n\n\n\n The run the commands below to start Minikube instance using KVM driver:<\/p>\n\n\n\n Sample Output for Virtualbox:<\/p>\n\n\n\n Check the installed Kubectl version.<\/p>\n\n\n\n In this guide, we will use arkade to install OpenFaaS. Arkade is an open-source CLI that helps to easily manage apps. It is written in Go language and uses helm charts and Use the below command to install arkade on your machine.<\/p>\n\n\n\n Sample Output:<\/p>\n\n\n\n With arkade installed on your system, you will easily download OpenFaaS using the command:<\/p>\n\n\n\n In the command, you have installed OpenFaaS using the official helm chart. You have installed OpenFaaS with your own password “MyStrongPassword<\/strong>” and disabled Sample output:<\/p>\n\n\n\n The faas-cli<\/strong> is required once OpenFaaS is installed on your system. It is used to deploy and test functions with OpenFaas. Install it on your system using the command:<\/p>\n\n\n\n Now we have successfully set up OpenFaaS, we can now login to it using The default username is admin and the password, we use the one specified earlier MyStrongPassword<\/strong><\/p>\n\n\n\n Sample Output:<\/p>\n\n\n\n Now with the OpenFaaS installation successful, we will now get to the crux of this guide. Deploying the OpenFaaS framework on Kubernetes is done by issuing the below command.<\/p>\n\n\n\n Sample Output:<\/p>\n\n\n\n Check the status of the core containers in OpenFaaS using the command:<\/p>\n\n\n\n Sample Output:<\/p>\n\n\n\n Then forward all the requests sent to http:\/\/localhost:8080<\/a> using kubectl port-forward command.<\/p>\n\n\n\n This connection remains open as long as the process is running. If it disconnects due to some reason, re-run it. You can run it in the background using Now access the OpenFaas web interface using the URL http:\/\/127.0.0.1:8080<\/a><\/p>\n\n\n\n Login with the credentials; username: admin<\/strong> password: MyStrongPassword<\/strong>. On successful login, you will see this OpenFaas dashboard.<\/p>\n\n\n\n We can now deploy a new function on OpenFaas by clicking on Deploy a new Function<\/strong>.<\/p>\n\n\n\n There is a long list of functions to deploy. For the purposes of this guide, I will go for a Nodeinfo<\/strong> deployment.<\/p>\n\n\n\n Select it and the option for deploy becomes active as shown.<\/p>\n\n\n\n Click deploy<\/strong> and your new function will appear as shown.<\/p>\n\n\n\n Select it and invoke<\/strong> it. The node info will then be displayed. Still, you can use the provided URL to see the node information.<\/p>\n\n\n\n Books For Learning Kubernetes Administration:<\/em><\/strong><\/p>\n\n\n\n Congratulations! We have triumphantly gone through how to Deploy OpenFaaS Serverless Framework on Kubernetes. I hope this guide was informative. In case you had issues with deploying OpenFaaS Serverless Framework on Kubernetes let us know.<\/p>\n\n\n\n See more on this page:<\/p>\n\n\n\n Welcome to this guide on how to deploy OpenFaaS Serverless Framework on Kubernetes. But before we commence on the crux of this tool, I would like to explain a few concepts. Serverless is a cloud computing design whereby business logic is written as a function that can be executed in a stateless manner. Serverless, as … Read more<\/a><\/p>\n","protected":false},"author":21,"featured_media":104464,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[316,299,317,50],"tags":[36114,36113],"class_list":["post-104415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-containers","category-how-to","category-kubernetes","category-linux-tutorials","tag-deploy-openfaas-serverless-framework-on-kubernetes","tag-openfaas-serverless-framework"],"_links":{"self":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts\/104415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/comments?post=104415"}],"version-history":[{"count":1,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts\/104415\/revisions"}],"predecessor-version":[{"id":163242,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts\/104415\/revisions\/163242"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/media\/104464"}],"wp:attachment":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/media?parent=104415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/categories?post=104415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/tags?post=104415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Kubernetes in the mix?<\/h3>\n\n\n\n
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Step 1: Install and Set up Kubernetes Cluster <\/h2>\n\n\n\n
\n
Running a Kubernetes Cluster using Minikube<\/h3>\n\n\n\n
##On RHEL 8\/Centos 8\/ Rocky Linux 8\n<\/em><\/span>sudo yum install epel-release\nsudo yum install snapd\n\n##On Debian\/Ubuntu\n<\/em><\/span>sudo apt install snapd\n\n##On macOS\n<\/em><\/span>brew install snap<\/code><\/pre>\n\n\n\nsudo ln -s \/var\/lib\/snapd\/snap \/snap\necho 'export PATH=$PATH:\/var\/lib\/snapd\/snap\/bin' | sudo tee -a \/etc\/profile.d\/snap.sh\nsource \/etc\/profile.d\/snap.sh<\/code><\/pre>\n\n\n\nsudo systemctl enable --now snapd.service snapd.socket<\/code><\/pre>\n\n\n\n$ sudo snap install kubectl --classic<\/span>\n2021-08-24T18:39:53+03:00 INFO Waiting for automatic snapd restart...\nkubectl 1.21.4 from Canonical\u2713<\/span><\/strong> installed<\/code><\/pre>\n\n\n\nwget https:\/\/storage.googleapis.com\/minikube\/releases\/latest\/minikube-linux-amd64 -O minikube<\/code><\/pre>\n\n\n\nsudo chmod 755 minikube\nsudo cp minikube \/usr\/local\/bin\/<\/code><\/pre>\n\n\n\nsudo chmod +x \/usr\/local\/bin\/minikube<\/code><\/pre>\n\n\n\n$ minikube version<\/span>\nminikube version: v1.23.2\ncommit: 0a0ad764652082477c00d51d2475284b5d39ceed<\/code><\/pre>\n\n\n\nRun Kubernetes using Minikube<\/h3>\n\n\n\n
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minikube start --driver=virtualbox<\/code><\/pre>\n\n\n\nsudo usermod -aG libvirt $USER\nnewgrp libvirt<\/code><\/pre>\n\n\n\nminikube start --driver=kvm2<\/code><\/pre>\n\n\n\n...........\n\ud83d\udd25 Creating virtualbox VM (CPUs=2, Memory=2900MB, Disk=20000MB) ...\n\ud83d\udc33 Preparing Kubernetes v1.21.2 on Docker 20.10.6 ...\n \u25aa Generating certificates and keys ...\n \u25aa Booting up control plane ...\n \u25aa Configuring RBAC rules ...\n\ud83d\udd0e Verifying Kubernetes components...\n \u25aa Using image gcr.io\/k8s-minikube\/storage-provisioner:v5\n\ud83c\udf1f Enabled addons: default-storageclass, storage-provisioner\n\ud83c\udfc4 Done! kubectl is now configured to use \"minikube\" cluster and \"default\" namespace by default<\/span><\/strong><\/code><\/pre>\n\n\n\n$ kubectl version\n<\/span><\/strong>Client Version: version.Info{Major:\"1\", Minor:\"22\", GitVersion:\"v1.22.2\", GitCommit:\"8b5a19147530eaac9476b0ab82980b4088bbc1b2\", GitTreeState:\"clean\", BuildDate:\"2021-09-15T21:38:50Z\", GoVersion:\"go1.16.8\", Compiler:\"gc\", Platform:\"linux\/amd64\"}\nThe connection to the server localhost:8080 was refused - did you specify the right host or port?<\/code><\/pre>\n\n\n\nStep 2: Install arkade<\/h2>\n\n\n\n
kubectl <\/code>to install applications to the Kubernetes cluster.<\/p>\n\n\n\n## For MacOS \/ Linux users \n<\/em><\/mark>curl -sLS https:\/\/get.arkade.dev | sudo sh\n\n## For Windows users(using Git Bash) \n<\/em><\/mark>curl -SLsf https:\/\/get.arkade.dev | sh<\/code><\/pre>\n\n\n\nx86_64\nDownloading package https:\/\/github.com\/alexellis\/arkade\/releases\/download\/0.10.0\/arkade as \/tmp\/arkade\nDownload complete.\n\nRunning with sufficient permissions to attempt to move arkade to \/usr\/local\/bin\nNew version of arkade installed to \/usr\/local\/bin\nwhich: no ark in (\/sbin:\/bin:\/usr\/sbin:\/usr\/bin)\nCreating alias 'ark' for 'arkade'.\n _ _\n __ _ _ __| | ____ _ __| | ___\n \/ _` | '__| |\/ \/ _` |\/ _` |\/ _ \\\n| (_| | | | < (_| | (_| | __\/\n \\__,_|_| |_|\\_\\__,_|\\__,_|\\___|\n\nOpen Source Marketplace For Developer Tools\n\nVersion: 0.10.0\nGit Commit: 8965ff8b7bdfc6f23543d509cc1e6774c37a9fe6\n\n \ud83d\udc33 Want to speed up your CI 2-3x, whilst lowering costs? https:\/\/actuated.dev<\/code><\/pre>\n\n\n\nStep 3: Install OpenFaas<\/h2>\n\n\n\n
arkade install openfaas --basic-auth-password MyStrongPassword<\/span> --set=faasIdler.dryRun=false<\/span><\/code><\/pre>\n\n\n\nfaasIdler.dryRun<\/code><\/strong>. This is required for autoscaling.<\/p>\n\n\n\n............\nfaas-cli store deploy figlet\nfaas-cli list\n\n# For Raspberry Pi\nfaas-cli store list \\\n --platform armhf\n\nfaas-cli store deploy figlet \\\n --platform armhf\n\n# Find out more at:\n# https:\/\/github.com\/openfaas\/faas\n\nThanks for using arkade!<\/span><\/strong><\/code><\/pre>\n\n\n\nStep 4: Install faas-cli<\/h2>\n\n\n\n
## For Linux and MacOS users\n<\/span>curl -sL https:\/\/cli.openfaas.com | sudo sh\n\n## For Windows users with (Git Bash)\n<\/span>curl -sL https:\/\/cli.openfaas.com | sh<\/code><\/pre>\n\n\n\nfast-cli <\/code><\/strong>or the Web UI as below.<\/p>\n\n\n\nfaas-cli login --username admin<\/mark> --password MyStrongPassword<\/span><\/code><\/pre>\n\n\n\nRunning with sufficient permissions to attempt to move faas-cli to \/usr\/local\/bin\nNew version of faas-cli installed to \/usr\/local\/bin\nCreating alias 'faas' for 'faas-cli'.\n ___ _____ ____\n \/ _ \\ _ __ ___ _ __ | ___|_ _ __ _\/ ___|\n| | | | '_ \\ \/ _ \\ '_ \\| |_ \/ _` |\/ _` \\___ \\\n| |_| | |_) | __\/ | | | _| (_| | (_| |___) |\n \\___\/| .__\/ \\___|_| |_|_| \\__,_|\\__,_|____\/\n |_|<\/span><\/strong>\n\nCLI:\n commit: 869d236be5bf71cc32231a4317ccfcd950de35ef\n version: 0.16.13<\/code><\/pre>\n\n\n\nStep 5: Deploy OpenFaas on Kubernetes<\/h2>\n\n\n\n
kubectl get deploy --namespace openfaas<\/code><\/pre>\n\n\n\nNAME READY UP-TO-DATE AVAILABLE AGE\nalertmanager 0\/1 1 0 71s\nbasic-auth-plugin 1\/1 1 1 71s\ngateway 0\/1 1 0 71s\nnats 0\/1 1 0 71s\nprometheus 0\/1 1 0 71s\nqueue-worker 0\/1 1 0 71s<\/code><\/pre>\n\n\n\nkubectl rollout status -n openfaas deploy\/gateway<\/code><\/pre>\n\n\n\nWaiting for deployment \"gateway\" rollout to finish: 0 of 1 updated replicas are available...\ndeployment \"gateway\" successfully rolled out<\/code><\/pre>\n\n\n\nkubectl port-forward -n openfaas svc\/gateway 8080:8080<\/code><\/pre>\n\n\n\n&<\/code> at the end.<\/p>\n\n\n\nStep 6: Access the OpenFaaS Web UI<\/h2>\n\n\n\n
![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes.png\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes-1-1024x297.png\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes-4.png\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes-5.png\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes-6.png\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes-7-1024x482.png\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2021\/09\/How-To-Deploy-OpenFaaS-Serverless-Framework-on-Kubernetes-8.png\" "\\"\\"")
<\/figure>\n\n\n\n\n
Conclusion.<\/h2>\n\n\n\n
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