How can I automate the configuration of HTTP proxy for Amazon EKS containerd nodes?
I want to automate the configuration of HTTP proxy for Amazon Elastic Kubernetes Service (Amazon EKS) nodes with containerd runtime. How can I do that?
"I want to automate the configuration of HTTP proxy for Amazon Elastic Kubernetes Service (Amazon EKS) nodes with containerd runtime. How can I do that?Short descriptionImportant: For managed node groups that are created in Amazon EKS versions 1.23 or earlier, the default container runtime is Docker. If this applies to you, then be sure to follow all steps in the resolution to specify a containerd runtime. For managed node groups that are created in Amazon EKS version 1.24 or later, the default container runtime in containerd.To use containerd in your managed node group instead of dockerd, you must specify a containerd runtime in userdata.After you switch your managed node group to a containerd runtime, create a custom launch template with your AMI ID. You can then configure the settings for your HTTP proxy and the environment values of your cluster.Note: The following resolution applies only to nodes where the underlying runtime is containerd, and doesn't apply to nodes with Docker runtime. For nodes with Docker runtime, see How can I automate the configuration of HTTP proxy for Amazon EKS worker nodes with user data?ResolutionCreate a custom launch template1.    Specify containerd as the runtime in your managed node group. In userdata, use the --container-runtime=containerd option for bootstrap.sh.2.    Create a custom launch template with the AMI ID. Otherwise, the managed nodes group merges userdata automatically when the AMI ID isn’t specified.3.    Set the proxy configuration to containerd, sandbox-image, and kubelet. Sandbox-image is the service unit that pulls the sandbox image for containerd. To set this configuration, see the sandbox-image.service and pull-sandbox-image.sh scripts on GitHub.   You can now describe your userdata with the following fields:Note: Be sure to replace XXXXXXX:3128, YOUR_CLUSTER_CA, API_SERVER_ENDPOINT, and EKS_CLUSTER_NAME with your relevant proxy, cluster CA, server endpoint, and cluster name. You can add AWS service endpoints to NO_PROXY and no_proxy after you create their VPC endpoints.MIME-Version: 1.0Content-Type: multipart/mixed; boundary="==BOUNDARY=="--==BOUNDARY==Content-Type: text/cloud-boothook; charset="us-ascii"#Set the proxy hostname and portPROXY=XXXXXXX:3128MAC=$(curl -s http://169.254.169.254/latest/meta-data/mac/)VPC_CIDR=$(curl -s http://169.254.169.254/latest/meta-data/network/interfaces/macs/$MAC/vpc-ipv4-cidr-blocks | xargs | tr ' ' ',')#Create the containerd and sandbox-image systemd directorymkdir -p /etc/systemd/system/containerd.service.dmkdir -p /etc/systemd/system/sandbox-image.service.d#[Option] Configure yum to use the proxycloud-init-per instance yum_proxy_config cat << EOF >> /etc/yum.confproxy=http://$PROXYEOF#Set the proxy for future processes, and use as an include filecloud-init-per instance proxy_config cat << EOF >> /etc/environmenthttp_proxy=http://$PROXYhttps_proxy=http://$PROXYHTTP_PROXY=http://$PROXYHTTPS_PROXY=http://$PROXYno_proxy=$VPC_CIDR,localhost,127.0.0.1,169.254.169.254,.internal,.eks.amazonaws.comNO_PROXY=$VPC_CIDR,localhost,127.0.0.1,169.254.169.254,.internal,.eks.amazonaws.comEOF#Configure Containerd with the proxycloud-init-per instance containerd_proxy_config tee <<EOF /etc/systemd/system/containerd.service.d/http-proxy.conf >/dev/null[Service]    EnvironmentFile=/etc/environmentEOF#Configure sandbox-image with the proxycloud-init-per instance sandbox-image_proxy_config tee <<EOF /etc/systemd/system/sandbox-image.service.d/http-proxy.conf >/dev/null[Service]    EnvironmentFile=/etc/environmentEOF#Configure the kubelet with the proxycloud-init-per instance kubelet_proxy_config tee <<EOF /etc/systemd/system/kubelet.service.d/proxy.conf >/dev/null[Service]EnvironmentFile=/etc/environmentEOFcloud-init-per instance reload_daemon systemctl daemon-reload --==BOUNDARY==Content-Type:text/x-shellscript; charset="us-ascii"#!/bin/bashset -o xtrace#Set the proxy variables before running the bootstrap.sh scriptset -asource /etc/environment#Run the bootstrap.sh scriptB64_CLUSTER_CA=YOUR_CLUSTER_CAAPI_SERVER_URL=API_SERVER_ENDPOINT/etc/eks/bootstrap.sh EKS_CLUSTER_NAME --b64-cluster-ca $B64_CLUSTER_CA --apiserver-endpoint $API_SERVER_URL --container-runtime containerd--==BOUNDARY==--Configure the proxy setting for aws-node and kube-proxyCreate a ConfigMap to configure the environment values. Then, apply it in your cluster. Use the following script as an example for your ConfigMap:Note: Be sure to replace KUBERNETES_SERVICE_CIDR_RANGE and VPC_CIDR_RANGE with the relevant values for your CIDR ranges. For example, replace KUBERNETES_SERVICE_CIDR_RANGE with 10.100.0.0/16, and replace VPC_CIDR_RANGE with 192.168.0.0/16. You can add AWS service endpoints to NO_PROXY and no_proxy after you create their VPC endpoints.apiVersion: v1kind: ConfigMapmetadata:   name: proxy-environment-variables   namespace: kube-systemdata:   HTTP_PROXY: http://XXXXXXX:3128   HTTPS_PROXY: http://XXXXXXX:3128   NO_PROXY: KUBERNETES_SERVICE_CIDR_RANGE,localhost,127.0.0.1,VPC_CIDR_RANGE,169.254.169.254,.internal,.eks.amazonaws.comThen, set your HTTP proxy configuration to aws-node and kube-proxy:$ kubectl patch -n kube-system -p '{ "spec": {"template":{ "spec": { "containers": [ { "name": "aws-node", "envFrom": [ { "configMapRef": {"name": "proxy-environment-variables"} } ] } ] } } } }' daemonset aws-node$ kubectl patch -n kube-system -p '{ "spec": {"template":{ "spec": { "containers": [ { "name": "kube-proxy", "envFrom": [ { "configMapRef": {"name": "proxy-environment-variables"} } ] } ] } } } }' daemonset kube-proxy Create a managed node groupCreate a new managed node group that uses the custom launch template that you previously created. Follow the steps inCreating a managed node group.Test your proxyUse the following commands to check the status of your nodes:$ kubectl get nodes$ kubectl run test-pod --image=amazonlinux:2 --restart=Never -- sleep 300$ kubectl get pods -AYou receive an output similar to the following:$ kubectl get nodes -o wideNAME                                                 STATUS   ROLES    AGE     VERSION                INTERNAL-IP       EXTERNAL-IP   OS-IMAGE         KERNEL-VERSION                 CONTAINER-RUNTIMEip-192-168-100-114.ap-northeast-1.compute.internal   Ready    <none>   2m27s   v1.23.13-eks-fb459a0   192.168.100.114   <none>        Amazon Linux 2   5.4.219-126.411.amzn2.x86_64   containerd://1.6.6$ kubectl run test-pod --image=amazonlinux:2 --restart=Never -- sleep 300pod/test-pod created$ kubectl get pods -ANAMESPACE     NAME                       READY   STATUS    RESTARTS   AGEdefault       test-pod                   1/1     Running   0          14skube-system   aws-node-cpjcl             1/1     Running   0          3m34skube-system   coredns-69cfddc4b4-c7rpd   1/1     Running   0          26mkube-system   coredns-69cfddc4b4-z5jxq   1/1     Running   0          26mkube-system   kube-proxy-g2f4g           1/1     Running   0          3m34sCheck your proxy log for additional information on your nodes’ connectivity:192.168.100.114 TCP_TUNNEL/200 6230 CONNECT registry-1.docker.io:443 - HIER_DIRECT/XX.XX.XX.XX -192.168.100.114 TCP_TUNNEL/200 10359 CONNECT auth.docker.io:443 - HIER_DIRECT/XX.XX.XX.XX -192.168.100.114 TCP_TUNNEL/200 6633 CONNECT registry-1.docker.io:443 - HIER_DIRECT/XX.XX.XX.XX -192.168.100.114 TCP_TUNNEL/200 10353 CONNECT auth.docker.io:443 - HIER_DIRECT/XX.XX.XX.XX -192.168.100.114 TCP_TUNNEL/200 8767 CONNECT registry-1.docker.io:443 - HIER_DIRECT/XX.XX.XX.XX -Related informationHow do I provide access to other IAM users and roles after cluster creation in Amazon EKS?Follow"