Being a newbie I was trying to install calico with minikube.
I did downloaded it from https://github.com/kubernetes/minikube/releases/tag/v0.20.0 into my Ubuntu OS.
I tried the following commands to install it:
minikube start --network-plugin=cni
Then downloaded https://github.com/projectcalico/calico/blob/master/v2.6/getting-started/kubernetes/installation/hosted/calicoctl.yaml into my /usr/local/bin/ location of Ubuntu
Finally tried d to install by
kubectl apply -f calico.yaml
But after that command the terminal hunged up for a long time without any response.
I tried couple of time but it resulted the same.
Please help, I am not able to install it
First of all, I will suggest to get the latest minikube version from here.
Once you are done getting your latest minikube, there are 2 ways to install and run Calico with minikube:
policy-only mode
networking (includes policy) mode
With policy-only mode without networking:
minikube start --network-plugin=cni --host-only-cidr 172.17.17.1/24 \
--extra-config=kubelet.PodCIDR=192.168.0.0/16 \
--extra-config=proxy.ClusterCIDR=192.168.0.0/16 \
--extra-config=controller-manager.ClusterCIDR=192.168.0.0/16 \
--extra-config=controller-manager.CIDRAllocatorType=RangeAllocator \
--extra-config=controller-manager.AllocateNodeCIDRs=true
Then use kubectl apply -f https://github.com/projectcalico/calico/blob/master/v2.6/getting-started/kubernetes/installation/hosted/kubernetes-datastore/policy-only/1.7/calico.yaml
or with networking (which also includes policy) mode which configures the networking and provides policy:
minikube start --network-plugin=cni --host-only-cidr 172.17.17.1/24 \
--extra-config=kubelet.PodCIDR=192.168.0.0/16 \
--extra-config=proxy.ClusterCIDR=192.168.0.0/16 \
--extra-config=controller-manager.ClusterCIDR=192.168.0.0/16
then kubectl apply -f https://github.com/projectcalico/calico/blob/master/v2.6/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml
For more ref:- https://github.com/projectcalico/calico/issues/1013#issuecomment-325689943
Hope that help you to start
Related
This is my first time of setting up Kubernetes on Google Cloud Platform.
These are the steps I followed:
I created an account on Google Cloud Platform and spun up a new instance:
https://console.cloud.google.com/compute
Installed the gcloud SDK:
curl https://sdk.cloud.google.com | bash
Configured my Google Cloud Platform account information
gcloud auth login
Installed the latest verion of Kubernetes
curl -sS https://get.k8s.io | bash
Launched a new cluster:
kubernetes/cluster/kube-up.sh
Confirmed that my configuration along with the cluster management credentials are stored in:
sudo nano /home/promisepreston/.kube/config
Installed kubectl on the server
curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl"
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl
Ran the command below which outputted the URL for the master services including DNS, UI, and monitoring
kubectl cluster-info
Deployed the Dashboard UI by running the following command:
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml
And finally, I tried accessing the Dashboard by running the following command:
kubectl proxy
Which should make the Dashboard available at:
http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/
However, when I visit that URL I get error:
Unable to connect
And even when I try the command below:
curl http://localhost:8001/api
I get the error below:
curl: (7) Failed to connect to localhost port 8001: Connection refused
I have looked through a lot of documentation and tried multiple solutions, but none seems to work for me.
Installed kubectl on the server
You need kubectl on machine, from which you're going to access your cluster. If you installed it on the server and you ran kubectl proxy on the server - then you can access the proxy only from your server (depends on your network config).
If you do curl http://localhost:8001/api on the server - it will work.
So, you need to install kubectl on your machine, set up the k8s context for it and then run kubectl proxy - after that, all requests to proxy will be forwarded to your cluster.
In each request to k8s API server you need to be authenticated, when you run kubectl proxy - basically proxy will take care of authentication and SSL/TLS related stuff.
Read this for more info: Use an HTTP Proxy to Access the Kubernetes API
and The Kubernetes API
Configure Access to Multiple Clusters - may also be useful
Basically you need to do the following:
Note: These should be done directly on your local machine, and not on the server or the terminal connecting to the server, but directly on your local machine:
Install the gcloud SDK:
# Add the Cloud SDK distribution URI as a package source
echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] http://packages.cloud.google.com/apt cloud-sdk main" | sudo tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
# Import the Google Cloud public key
curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
# Update the package list and install the Cloud SDK
sudo apt-get update && sudo apt-get install google-cloud-sdk
Configure your Google Cloud Platform account information:
gcloud auth login
Install Kubectl the Kubernetes command line tool:
curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl"
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl
Install Minikube that will be using to install Kubernetes on your local machine:
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube_latest_amd64.deb
sudo dpkg -i minikube_latest_amd64.deb
Start Minikube to pull the latest image of Kubenetes on your local system and configure it with Kubectl:
minikube start
If you already have some clusters set up, you can now use it to access your shiny new cluster:
kubectl get po -A
Minikube bundles the Kubernetes Dashboard, allowing you to get easily acclimated to your new environment:
minikube dashboard
I have created minikube cluster. I have to run my automation script in the minikube for testcases using pytest. I have to pass service account. How to get the it? Anyone can please help?
While running minikube add extra flags:
minikube start \
--extra-config=apiserver.service-account-signing-key-file=/var/lib/minikube/certs/sa.key \
--extra-config=apiserver.service-account-key-file=/var/lib/minikube/certs/sa.pub \
--extra-config=apiserver.service-account-issuer=api \
--extra-config=apiserver.service-account-api-audiences=api,spire-server,nats \
--extra-config=apiserver.authorization-mode=Node,RBAC \
--extra-config=kubelet.authentication-token-webhook=true
Take a look: minikube-sa, kubernetes-psat.
I have been trying to install Entando 6 on my Mac following the instructions on http://docs.entando.com, however when deploying to Kubernetes I get an error with quickstart-kc-deployer. Has anyone managed to successfully go through with the installation?
deployment failure
Also I am new to Kubernetes and trying to access any logs, however as of now I have not been able to access logs and understand a bit more what the root cause of the failure is. Help on that is also more than welcome as well.
Thanks.
If you're in a local development environment the best bet would be to try the new instructions at dev.entando.org. If you're installing on a cloud Kubernetes provider try the updated instructions here.
I've reproduced them here for completeness:
Install Multipass (https://multipass.run/#install
Launch VM
multipass launch --name ubuntu-lts --cpus 4 --mem 8G --disk 20G
Open a shell multipass shell ubuntu-lts
Install k3s curl -sfL https://get.k3s.io | sh -
Download Entando custom resource definitions
curl -L -C - https://raw.githubusercontent.com/entando/entando-releases/v6.2.0/dist/qs/custom-resources.tar.gz | tar -xz
Create custom resources
sudo kubectl create -f dist/crd
Create namespace
sudo kubectl create namespace entando
Download Helm chart
curl -L -C - -O https://raw.githubusercontent.com/entando/entando-releases/v6.2.0/dist/qs/entando.yaml
Configure access to your cluster
IP=$(hostname -I | awk '{print $1}')
sed -i "s/192.168.64.25/$IP/" entando.yaml
If you want to deploy on a cloud provider (EKS, AKS, GKE) then there are new instructions under the Configuration and Operations section at
https://dev.entando.org/next/tutorials
I uninstalled calico using:
'kubectl delete -f calico.yaml'
and installed weave using:
'export kubever=$(kubectl version | base64 | tr -d '\n')'
'kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$kubever"'
When i deploy my pods they remain at "ContainerCreating" status.
When i check pod logs i see error below:
'networkPlugin cni failed to set up pod "saccofrontend-d7444fd6d-998gf_default" network: stat /var/lib/calico/nodename: no such file or directory: check that the calico/node container is running and has mounted /var/lib/calico/'
I manually deleted this file.
A reinstall of docker and kubeadm did not help either.Still getting the same error.
Please advise what could be promting kubelet to still use calico as the cni even though i unstialled it.
thank you for pointing me in the right direction: These cmds solved the problem:
rm -rf /var/lib/cni
rm -rf /etc/cni/net.d
then re-installed kubeadm
My issue was that I was using the command below to setup the Calico CNI:
kubectl apply -f https://docs.projectcalico.org/v3.9/manifests/calico.yaml
Using the link below instead worked. It's the same without the version I guess.
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
Install Tigera Operator
kubectl create -f https://projectcalico.docs.tigera.io/manifests/tigera-operator.yaml
Install Calico by creating the necessary custom resource
kubectl create -f https://projectcalico.docs.tigera.io/manifests/custom-resources.yaml
Now Watch the nodes running and bring up core dns pod too.
I am trying to install Kubernetes locally on my CentOS. I am following this blog http://containertutorials.com/get_started_kubernetes/index.html, with appropriate changes to match CentOS and latest Kubernetes version.
./kube-up.sh script runs and exists with no errors and I don't see the server started on port 8080. Is there a way to know what was the error and if there is any other procedure to follow on CentOS 6.3
The easiest way to install the kubernetes cluster is using kubeadm. The initial post which details the steps of setup is here. And the detailed documentation for the kubeadm can be found here. With this you will get the latest released kubernetes.
If you really want to use the script to bring up the cluster, I did following:
Install the required packages
yum install -y git docker etcd
Start docker process
systemctl enable --now docker
Install golang
Latest go version because default centos golang is old and for kubernetes to compile we need at least go1.7
curl -O https://storage.googleapis.com/golang/go1.8.1.linux-amd64.tar.gz
tar -C /usr/local -xzf go1.8.1.linux-amd64.tar.gz
export PATH=$PATH:/usr/local/go/bin
Setup GOPATH
export GOPATH=~/go
export GOBIN=$GOPATH/bin
export PATH=$PATH:$GOBIN
Download k8s source and other golang dependencies
Note: this might take sometime depending on your internet speed
go get -d k8s.io/kubernetes
go get -u github.com/cloudflare/cfssl/cmd/...
Start cluster
cd $GOPATH/src/k8s.io/kubernetes
./hack/local-up-cluster.sh
In new terminal
alias kubectl=$GOPATH/src/k8s.io/kubernetes/cluster/kubectl.sh
kubectl get nodes