Update to Kubernetes 1.18.6
Kelsey Hightower
parent
5c462220b7
commit
e5f500b390
10
README.md
10
README.md
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@ -19,11 +19,11 @@ The target audience for this tutorial is someone planning to support a productio
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Kubernetes The Hard Way guides you through bootstrapping a highly available Kubernetes cluster with end-to-end encryption between components and RBAC authentication.
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* [kubernetes](https://github.com/kubernetes/kubernetes) 1.15.3
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* [containerd](https://github.com/containerd/containerd) 1.2.9
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* [coredns](https://github.com/coredns/coredns) v1.6.3
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* [cni](https://github.com/containernetworking/cni) v0.7.1
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* [etcd](https://github.com/coreos/etcd) v3.4.0
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* [kubernetes](https://github.com/kubernetes/kubernetes) v1.18.6
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* [containerd](https://github.com/containerd/containerd) v1.3.6
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* [coredns](https://github.com/coredns/coredns) v1.7.0
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* [cni](https://github.com/containernetworking/cni) v0.8.6
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* [etcd](https://github.com/coreos/etcd) v3.4.10
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## Labs
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@ -98,7 +98,7 @@ spec:
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beta.kubernetes.io/os: linux
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containers:
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- name: coredns
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image: coredns/coredns:1.6.2
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image: coredns/coredns:1.7.0
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imagePullPolicy: IfNotPresent
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resources:
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limits:
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@ -4,7 +4,7 @@
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This tutorial leverages the [Google Cloud Platform](https://cloud.google.com/) to streamline provisioning of the compute infrastructure required to bootstrap a Kubernetes cluster from the ground up. [Sign up](https://cloud.google.com/free/) for $300 in free credits.
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[Estimated cost](https://cloud.google.com/products/calculator/#id=55663256-c384-449c-9306-e39893e23afb) to run this tutorial: $0.23 per hour ($5.46 per day).
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[Estimated cost](https://cloud.google.com/products/calculator#id=873932bc-0840-4176-b0fa-a8cfd4ca61ae) to run this tutorial: $0.23 per hour ($5.50 per day).
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> The compute resources required for this tutorial exceed the Google Cloud Platform free tier.
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@ -14,7 +14,7 @@ This tutorial leverages the [Google Cloud Platform](https://cloud.google.com/) t
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Follow the Google Cloud SDK [documentation](https://cloud.google.com/sdk/) to install and configure the `gcloud` command line utility.
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Verify the Google Cloud SDK version is 262.0.0 or higher:
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Verify the Google Cloud SDK version is 301.0.0 or higher:
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```
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gcloud version
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@ -12,8 +12,8 @@ Download and install `cfssl` and `cfssljson`:
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### OS X
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```
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curl -o cfssl https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/darwin/cfssl
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curl -o cfssljson https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/darwin/cfssljson
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curl -o cfssl https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/1.4.1/darwin/cfssl
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curl -o cfssljson https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/1.4.1/darwin/cfssljson
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```
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```
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@ -34,8 +34,8 @@ brew install cfssl
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```
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wget -q --show-progress --https-only --timestamping \
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https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/linux/cfssl \
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https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/linux/cfssljson
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https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/1.4.1/linux/cfssl \
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https://storage.googleapis.com/kubernetes-the-hard-way/cfssl/1.4.1/linux/cfssljson
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```
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```
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@ -48,7 +48,7 @@ sudo mv cfssl cfssljson /usr/local/bin/
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### Verification
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Verify `cfssl` and `cfssljson` version 1.3.4 or higher is installed:
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Verify `cfssl` and `cfssljson` version 1.4.1 or higher is installed:
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```
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cfssl version
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@ -57,18 +57,16 @@ cfssl version
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> output
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```
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Version: 1.3.4
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Revision: dev
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Runtime: go1.13
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Version: 1.4.1
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Runtime: go1.12.12
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```
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```
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cfssljson --version
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```
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```
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Version: 1.3.4
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Revision: dev
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Runtime: go1.13
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Version: 1.4.1
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Runtime: go1.12.12
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```
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## Install kubectl
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@ -78,7 +76,7 @@ The `kubectl` command line utility is used to interact with the Kubernetes API S
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### OS X
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```
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curl -o kubectl https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/darwin/amd64/kubectl
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curl -o kubectl https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/darwin/amd64/kubectl
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```
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```
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@ -92,7 +90,7 @@ sudo mv kubectl /usr/local/bin/
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### Linux
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```
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wget https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl
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wget https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kubectl
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```
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```
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@ -105,7 +103,7 @@ sudo mv kubectl /usr/local/bin/
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### Verification
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Verify `kubectl` version 1.15.3 or higher is installed:
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Verify `kubectl` version 1.18.6 or higher is installed:
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```
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kubectl version --client
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@ -114,7 +112,7 @@ kubectl version --client
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> output
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```
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Client Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.3", GitCommit:"2d3c76f9091b6bec110a5e63777c332469e0cba2", GitTreeState:"clean", BuildDate:"2019-08-19T11:13:54Z", GoVersion:"go1.12.9", Compiler:"gc", Platform:"linux/amd64"}
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Client Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.6", GitCommit:"dff82dc0de47299ab66c83c626e08b245ab19037", GitTreeState:"clean", BuildDate:"2020-07-15T16:58:53Z", GoVersion:"go1.13.9", Compiler:"gc", Platform:"linux/amd64"}
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```
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Next: [Provisioning Compute Resources](03-compute-resources.md)
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@ -63,9 +63,9 @@ gcloud compute firewall-rules list --filter="network:kubernetes-the-hard-way"
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> output
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```
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NAME NETWORK DIRECTION PRIORITY ALLOW DENY
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kubernetes-the-hard-way-allow-external kubernetes-the-hard-way INGRESS 1000 tcp:22,tcp:6443,icmp
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kubernetes-the-hard-way-allow-internal kubernetes-the-hard-way INGRESS 1000 tcp,udp,icmp
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NAME NETWORK DIRECTION PRIORITY ALLOW DENY DISABLED
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kubernetes-the-hard-way-allow-external kubernetes-the-hard-way INGRESS 1000 tcp:22,tcp:6443,icmp False
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kubernetes-the-hard-way-allow-internal kubernetes-the-hard-way INGRESS 1000 tcp,udp,icmp Fals
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```
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### Kubernetes Public IP Address
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@ -86,13 +86,13 @@ gcloud compute addresses list --filter="name=('kubernetes-the-hard-way')"
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> output
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```
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NAME REGION ADDRESS STATUS
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kubernetes-the-hard-way us-west1 XX.XXX.XXX.XX RESERVED
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NAME ADDRESS/RANGE TYPE PURPOSE NETWORK REGION SUBNET STATUS
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kubernetes-the-hard-way XX.XXX.XXX.XXX EXTERNAL us-west1 RESERVED
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```
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## Compute Instances
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The compute instances in this lab will be provisioned using [Ubuntu Server](https://www.ubuntu.com/server) 18.04, which has good support for the [containerd container runtime](https://github.com/containerd/containerd). Each compute instance will be provisioned with a fixed private IP address to simplify the Kubernetes bootstrapping process.
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The compute instances in this lab will be provisioned using [Ubuntu Server](https://www.ubuntu.com/server) 20.04, which has good support for the [containerd container runtime](https://github.com/containerd/containerd). Each compute instance will be provisioned with a fixed private IP address to simplify the Kubernetes bootstrapping process.
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### Kubernetes Controllers
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@ -104,9 +104,9 @@ for i in 0 1 2; do
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--async \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-family ubuntu-1804-lts \
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--image-family ubuntu-2004-lts \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--machine-type e2-standard-2 \
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--private-network-ip 10.240.0.1${i} \
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--scopes compute-rw,storage-ro,service-management,service-control,logging-write,monitoring \
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--subnet kubernetes \
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--async \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-family ubuntu-1804-lts \
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--image-family ubuntu-2004-lts \
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--image-project ubuntu-os-cloud \
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--machine-type n1-standard-1 \
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--machine-type e2-standard-2 \
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--metadata pod-cidr=10.200.${i}.0/24 \
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--private-network-ip 10.240.0.2${i} \
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--scopes compute-rw,storage-ro,service-management,service-control,logging-write,monitoring \
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@ -144,19 +144,19 @@ done
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List the compute instances in your default compute zone:
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```
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gcloud compute instances list
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gcloud compute instances list --filter="tags.items=kubernetes-the-hard-way"
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```
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> output
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```
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NAME ZONE MACHINE_TYPE PREEMPTIBLE INTERNAL_IP EXTERNAL_IP STATUS
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controller-0 us-west1-c n1-standard-1 10.240.0.10 XX.XXX.XXX.XXX RUNNING
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controller-1 us-west1-c n1-standard-1 10.240.0.11 XX.XXX.X.XX RUNNING
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controller-2 us-west1-c n1-standard-1 10.240.0.12 XX.XXX.XXX.XX RUNNING
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worker-0 us-west1-c n1-standard-1 10.240.0.20 XXX.XXX.XXX.XX RUNNING
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worker-1 us-west1-c n1-standard-1 10.240.0.21 XX.XXX.XX.XXX RUNNING
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worker-2 us-west1-c n1-standard-1 10.240.0.22 XXX.XXX.XX.XX RUNNING
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NAME ZONE MACHINE_TYPE PREEMPTIBLE INTERNAL_IP EXTERNAL_IP STATUS
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controller-0 us-west1-c e2-standard-2 10.240.0.10 XX.XX.XX.XXX RUNNING
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controller-1 us-west1-c e2-standard-2 10.240.0.11 XX.XXX.XXX.XX RUNNING
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controller-2 us-west1-c e2-standard-2 10.240.0.12 XX.XXX.XX.XXX RUNNING
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worker-0 us-west1-c e2-standard-2 10.240.0.20 XX.XX.XXX.XXX RUNNING
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worker-1 us-west1-c e2-standard-2 10.240.0.21 XX.XX.XX.XXX RUNNING
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worker-2 us-west1-c e2-standard-2 10.240.0.22 XX.XXX.XX.XX RUNNING
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```
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## Configuring SSH Access
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After the SSH keys have been updated you'll be logged into the `controller-0` instance:
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```
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Welcome to Ubuntu 18.04.3 LTS (GNU/Linux 4.15.0-1042-gcp x86_64)
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Welcome to Ubuntu 20.04 LTS (GNU/Linux 5.4.0-1019-gcp x86_64)
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...
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Last login: Sun Sept 14 14:34:27 2019 from XX.XXX.XXX.XX
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```
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Type `exit` at the prompt to exit the `controller-0` compute instance:
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@ -223,7 +221,7 @@ $USER@controller-0:~$ exit
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```
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logout
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Connection to XX.XXX.XXX.XXX closed
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Connection to XX.XX.XX.XXX closed
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```
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Next: [Provisioning a CA and Generating TLS Certificates](04-certificate-authority.md)
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```
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wget -q --show-progress --https-only --timestamping \
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"https://github.com/etcd-io/etcd/releases/download/v3.4.0/etcd-v3.4.0-linux-amd64.tar.gz"
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"https://github.com/etcd-io/etcd/releases/download/v3.4.10/etcd-v3.4.10-linux-amd64.tar.gz"
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```
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Extract and install the `etcd` server and the `etcdctl` command line utility:
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```
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{
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tar -xvf etcd-v3.4.0-linux-amd64.tar.gz
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sudo mv etcd-v3.4.0-linux-amd64/etcd* /usr/local/bin/
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tar -xvf etcd-v3.4.10-linux-amd64.tar.gz
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sudo mv etcd-v3.4.10-linux-amd64/etcd* /usr/local/bin/
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}
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```
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```
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{
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sudo mkdir -p /etc/etcd /var/lib/etcd
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sudo chmod 700 /var/lib/etcd
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sudo cp ca.pem kubernetes-key.pem kubernetes.pem /etc/etcd/
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}
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```
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> output
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```
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3a57933972cb5131, started, controller-2, https://10.240.0.12:2380, https://10.240.0.12:2379
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f98dc20bce6225a0, started, controller-0, https://10.240.0.10:2380, https://10.240.0.10:2379
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ffed16798470cab5, started, controller-1, https://10.240.0.11:2380, https://10.240.0.11:2379
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3a57933972cb5131, started, controller-2, https://10.240.0.12:2380, https://10.240.0.12:2379, false
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f98dc20bce6225a0, started, controller-0, https://10.240.0.10:2380, https://10.240.0.10:2379, false
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ffed16798470cab5, started, controller-1, https://10.240.0.11:2380, https://10.240.0.11:2379, false
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```
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Next: [Bootstrapping the Kubernetes Control Plane](08-bootstrapping-kubernetes-controllers.md)
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```
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wget -q --show-progress --https-only --timestamping \
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"https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kube-apiserver" \
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"https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kube-controller-manager" \
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"https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kube-scheduler" \
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"https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl"
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"https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kube-apiserver" \
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"https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kube-controller-manager" \
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"https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kube-scheduler" \
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"https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kubectl"
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```
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Install the Kubernetes binaries:
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--kubelet-client-certificate=/var/lib/kubernetes/kubernetes.pem \\
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--kubelet-client-key=/var/lib/kubernetes/kubernetes-key.pem \\
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--kubelet-https=true \\
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--runtime-config=api/all \\
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--runtime-config='api/all=true' \\
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--service-account-key-file=/var/lib/kubernetes/service-account.pem \\
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--service-cluster-ip-range=10.32.0.0/24 \\
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--service-node-port-range=30000-32767 \\
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@ -126,7 +126,7 @@ Documentation=https://github.com/kubernetes/kubernetes
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[Service]
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ExecStart=/usr/local/bin/kube-controller-manager \\
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--address=0.0.0.0 \\
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--bind-address=0.0.0.0 \\
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--cluster-cidr=10.200.0.0/16 \\
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--cluster-name=kubernetes \\
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--cluster-signing-cert-file=/var/lib/kubernetes/ca.pem \\
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@ -250,12 +250,12 @@ kubectl get componentstatuses --kubeconfig admin.kubeconfig
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```
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```
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NAME STATUS MESSAGE ERROR
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controller-manager Healthy ok
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NAME STATUS MESSAGE ERROR
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scheduler Healthy ok
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etcd-2 Healthy {"health": "true"}
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etcd-0 Healthy {"health": "true"}
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etcd-1 Healthy {"health": "true"}
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controller-manager Healthy ok
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etcd-0 Healthy {"health":"true"}
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etcd-1 Healthy {"health":"true"}
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etcd-2 Healthy {"health":"true"}
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```
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Test the nginx HTTP health check proxy:
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@ -266,11 +266,12 @@ curl -H "Host: kubernetes.default.svc.cluster.local" -i http://127.0.0.1/healthz
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```
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HTTP/1.1 200 OK
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Server: nginx/1.14.0 (Ubuntu)
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Date: Sat, 14 Sep 2019 18:34:11 GMT
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Server: nginx/1.18.0 (Ubuntu)
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Date: Sat, 18 Jul 2020 06:20:48 GMT
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Content-Type: text/plain; charset=utf-8
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Content-Length: 2
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Connection: keep-alive
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Cache-Control: no-cache, private
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X-Content-Type-Options: nosniff
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ok
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@ -402,12 +403,12 @@ curl --cacert ca.pem https://${KUBERNETES_PUBLIC_ADDRESS}:6443/version
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```
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{
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"major": "1",
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"minor": "15",
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"gitVersion": "v1.15.3",
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"gitCommit": "2d3c76f9091b6bec110a5e63777c332469e0cba2",
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"minor": "18",
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"gitVersion": "v1.18.6",
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"gitCommit": "dff82dc0de47299ab66c83c626e08b245ab19037",
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"gitTreeState": "clean",
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"buildDate": "2019-08-19T11:05:50Z",
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"goVersion": "go1.12.9",
|
||||
"buildDate": "2020-07-15T16:51:04Z",
|
||||
"goVersion": "go1.13.9",
|
||||
"compiler": "gc",
|
||||
"platform": "linux/amd64"
|
||||
}
|
||||
|
|
|
|||
|
|
@ -37,7 +37,7 @@ Verify if swap is enabled:
|
|||
sudo swapon --show
|
||||
```
|
||||
|
||||
If output is empthy then swap is not enabled. If swap is enabled run the following command to disable swap immediately:
|
||||
If output is empty then swap is not enabled. If swap is enabled run the following command to disable swap immediately:
|
||||
|
||||
```
|
||||
sudo swapoff -a
|
||||
|
|
@ -49,13 +49,13 @@ sudo swapoff -a
|
|||
|
||||
```
|
||||
wget -q --show-progress --https-only --timestamping \
|
||||
https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.15.0/crictl-v1.15.0-linux-amd64.tar.gz \
|
||||
https://github.com/opencontainers/runc/releases/download/v1.0.0-rc8/runc.amd64 \
|
||||
https://github.com/containernetworking/plugins/releases/download/v0.8.2/cni-plugins-linux-amd64-v0.8.2.tgz \
|
||||
https://github.com/containerd/containerd/releases/download/v1.2.9/containerd-1.2.9.linux-amd64.tar.gz \
|
||||
https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl \
|
||||
https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kube-proxy \
|
||||
https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubelet
|
||||
https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.18.0/crictl-v1.18.0-linux-amd64.tar.gz \
|
||||
https://github.com/opencontainers/runc/releases/download/v1.0.0-rc91/runc.amd64 \
|
||||
https://github.com/containernetworking/plugins/releases/download/v0.8.6/cni-plugins-linux-amd64-v0.8.6.tgz \
|
||||
https://github.com/containerd/containerd/releases/download/v1.3.6/containerd-1.3.6-linux-amd64.tar.gz \
|
||||
https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kubectl \
|
||||
https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kube-proxy \
|
||||
https://storage.googleapis.com/kubernetes-release/release/v1.18.6/bin/linux/amd64/kubelet
|
||||
```
|
||||
|
||||
Create the installation directories:
|
||||
|
|
@ -75,9 +75,9 @@ Install the worker binaries:
|
|||
```
|
||||
{
|
||||
mkdir containerd
|
||||
tar -xvf crictl-v1.15.0-linux-amd64.tar.gz
|
||||
tar -xvf containerd-1.2.9.linux-amd64.tar.gz -C containerd
|
||||
sudo tar -xvf cni-plugins-linux-amd64-v0.8.2.tgz -C /opt/cni/bin/
|
||||
tar -xvf crictl-v1.18.0-linux-amd64.tar.gz
|
||||
tar -xvf containerd-1.3.6-linux-amd64.tar.gz -C containerd
|
||||
sudo tar -xvf cni-plugins-linux-amd64-v0.8.6.tgz -C /opt/cni/bin/
|
||||
sudo mv runc.amd64 runc
|
||||
chmod +x crictl kubectl kube-proxy kubelet runc
|
||||
sudo mv crictl kubectl kube-proxy kubelet runc /usr/local/bin/
|
||||
|
|
@ -305,9 +305,9 @@ gcloud compute ssh controller-0 \
|
|||
|
||||
```
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
worker-0 Ready <none> 15s v1.15.3
|
||||
worker-1 Ready <none> 15s v1.15.3
|
||||
worker-2 Ready <none> 15s v1.15.3
|
||||
worker-0 Ready <none> 24s v1.18.6
|
||||
worker-1 Ready <none> 24s v1.18.6
|
||||
worker-2 Ready <none> 24s v1.18.6
|
||||
```
|
||||
|
||||
Next: [Configuring kubectl for Remote Access](10-configuring-kubectl.md)
|
||||
|
|
|
|||
|
|
@ -45,11 +45,11 @@ kubectl get componentstatuses
|
|||
|
||||
```
|
||||
NAME STATUS MESSAGE ERROR
|
||||
controller-manager Healthy ok
|
||||
scheduler Healthy ok
|
||||
controller-manager Healthy ok
|
||||
etcd-0 Healthy {"health":"true"}
|
||||
etcd-1 Healthy {"health":"true"}
|
||||
etcd-2 Healthy {"health":"true"}
|
||||
etcd-0 Healthy {"health":"true"}
|
||||
```
|
||||
|
||||
List the nodes in the remote Kubernetes cluster:
|
||||
|
|
@ -61,10 +61,10 @@ kubectl get nodes
|
|||
> output
|
||||
|
||||
```
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
worker-0 Ready <none> 2m9s v1.15.3
|
||||
worker-1 Ready <none> 2m9s v1.15.3
|
||||
worker-2 Ready <none> 2m9s v1.15.3
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
worker-0 Ready <none> 2m30s v1.18.6
|
||||
worker-1 Ready <none> 2m30s v1.18.6
|
||||
worker-2 Ready <none> 2m30s v1.18.6
|
||||
```
|
||||
|
||||
Next: [Provisioning Pod Network Routes](11-pod-network-routes.md)
|
||||
|
|
|
|||
|
|
@ -50,8 +50,8 @@ gcloud compute routes list --filter "network: kubernetes-the-hard-way"
|
|||
|
||||
```
|
||||
NAME NETWORK DEST_RANGE NEXT_HOP PRIORITY
|
||||
default-route-081879136902de56 kubernetes-the-hard-way 10.240.0.0/24 kubernetes-the-hard-way 1000
|
||||
default-route-55199a5aa126d7aa kubernetes-the-hard-way 0.0.0.0/0 default-internet-gateway 1000
|
||||
default-route-6be823b741087623 kubernetes-the-hard-way 0.0.0.0/0 default-internet-gateway 1000
|
||||
default-route-cebc434ce276fafa kubernetes-the-hard-way 10.240.0.0/24 kubernetes-the-hard-way 0
|
||||
kubernetes-route-10-200-0-0-24 kubernetes-the-hard-way 10.200.0.0/24 10.240.0.20 1000
|
||||
kubernetes-route-10-200-1-0-24 kubernetes-the-hard-way 10.200.1.0/24 10.240.0.21 1000
|
||||
kubernetes-route-10-200-2-0-24 kubernetes-the-hard-way 10.200.2.0/24 10.240.0.22 1000
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@ In this lab you will deploy the [DNS add-on](https://kubernetes.io/docs/concepts
|
|||
Deploy the `coredns` cluster add-on:
|
||||
|
||||
```
|
||||
kubectl apply -f https://storage.googleapis.com/kubernetes-the-hard-way/coredns.yaml
|
||||
kubectl apply -f https://storage.googleapis.com/kubernetes-the-hard-way/coredns-1.7.0.yaml
|
||||
```
|
||||
|
||||
> output
|
||||
|
|
@ -17,7 +17,7 @@ serviceaccount/coredns created
|
|||
clusterrole.rbac.authorization.k8s.io/system:coredns created
|
||||
clusterrolebinding.rbac.authorization.k8s.io/system:coredns created
|
||||
configmap/coredns created
|
||||
deployment.extensions/coredns created
|
||||
deployment.apps/coredns created
|
||||
service/kube-dns created
|
||||
```
|
||||
|
||||
|
|
@ -31,8 +31,8 @@ kubectl get pods -l k8s-app=kube-dns -n kube-system
|
|||
|
||||
```
|
||||
NAME READY STATUS RESTARTS AGE
|
||||
coredns-699f8ddd77-94qv9 1/1 Running 0 20s
|
||||
coredns-699f8ddd77-gtcgb 1/1 Running 0 20s
|
||||
coredns-5677dc4cdb-d8rtv 1/1 Running 0 30s
|
||||
coredns-5677dc4cdb-m8n69 1/1 Running 0 30s
|
||||
```
|
||||
|
||||
## Verification
|
||||
|
|
@ -40,7 +40,7 @@ coredns-699f8ddd77-gtcgb 1/1 Running 0 20s
|
|||
Create a `busybox` deployment:
|
||||
|
||||
```
|
||||
kubectl run --generator=run-pod/v1 busybox --image=busybox:1.28 --command -- sleep 3600
|
||||
kubectl run busybox --image=busybox:1.28 --command -- sleep 3600
|
||||
```
|
||||
|
||||
List the pod created by the `busybox` deployment:
|
||||
|
|
|
|||
|
|
@ -32,17 +32,24 @@ gcloud compute ssh controller-0 \
|
|||
00000010 73 2f 64 65 66 61 75 6c 74 2f 6b 75 62 65 72 6e |s/default/kubern|
|
||||
00000020 65 74 65 73 2d 74 68 65 2d 68 61 72 64 2d 77 61 |etes-the-hard-wa|
|
||||
00000030 79 0a 6b 38 73 3a 65 6e 63 3a 61 65 73 63 62 63 |y.k8s:enc:aescbc|
|
||||
00000040 3a 76 31 3a 6b 65 79 31 3a 44 ac 6e ac 11 2f 28 |:v1:key1:D.n../(|
|
||||
00000050 02 46 3d ad 9d cd 68 be e4 cc 63 ae 13 e4 99 e8 |.F=...h...c.....|
|
||||
00000060 6e 55 a0 fd 9d 33 7a b1 17 6b 20 19 23 dc 3e 67 |nU...3z..k .#.>g|
|
||||
00000070 c9 6c 47 fa 78 8b 4d 28 cd d1 71 25 e9 29 ec 88 |.lG.x.M(..q%.)..|
|
||||
00000080 7f c9 76 b6 31 63 6e ea ac c5 e4 2f 32 d7 a6 94 |..v.1cn..../2...|
|
||||
00000090 3c 3d 97 29 40 5a ee e1 ef d6 b2 17 01 75 a4 a3 |<=.)@Z.......u..|
|
||||
000000a0 e2 c2 70 5b 77 1a 0b ec 71 c3 87 7a 1f 68 73 03 |..p[w...q..z.hs.|
|
||||
000000b0 67 70 5e ba 5e 65 ff 6f 0c 40 5a f9 2a bd d6 0e |gp^.^e.o.@Z.*...|
|
||||
000000c0 44 8d 62 21 1a 30 4f 43 b8 03 69 52 c0 b7 2e 16 |D.b!.0OC..iR....|
|
||||
000000d0 14 a5 91 21 29 fa 6e 03 47 e2 06 25 45 7c 4f 8f |...!).n.G..%E|O.|
|
||||
000000e0 6e bb 9d 3b e9 e5 2d 9e 3e 0a |n..;..-.>.|
|
||||
00000040 3a 76 31 3a 6b 65 79 31 3a 8c 7b 16 f3 26 59 d5 |:v1:key1:.{..&Y.|
|
||||
00000050 c9 65 1c f0 3a 04 e7 66 2a f6 50 93 4e d4 d7 8c |.e..:..f*.P.N...|
|
||||
00000060 ca 24 ab 68 54 5f 31 f6 5c e5 5c c6 29 1d cc da |.$.hT_1.\.\.)...|
|
||||
00000070 22 fc c9 be 23 8a 26 b4 9b 38 1d 57 65 87 2a ac |"...#.&..8.We.*.|
|
||||
00000080 70 11 ea 06 93 b7 de ba 12 83 42 94 9d 27 8f ee |p.........B..'..|
|
||||
00000090 95 05 b0 77 31 ab 66 3d d9 e2 38 85 f9 a5 59 3a |...w1.f=..8...Y:|
|
||||
000000a0 90 c1 46 ae b4 9d 13 05 82 58 71 4e 5b cb ac e2 |..F......XqN[...|
|
||||
000000b0 3b 6e d7 10 ab 7c fc fe dd f0 e6 0a 7b 24 2e 68 |;n...|......{$.h|
|
||||
000000c0 5e 78 98 5f 33 40 f8 d2 10 30 1f de 17 3f 06 a1 |^x._3@...0...?..|
|
||||
000000d0 81 bd 1f 2e be e9 35 26 2c be 39 16 cf ac c2 6d |......5&,.9....m|
|
||||
000000e0 32 56 05 7d 80 39 5d c0 a4 43 46 75 96 0c 87 49 |2V.}.9]..CFu...I|
|
||||
000000f0 3c 17 1a 1c 8e 52 b1 e8 42 6b a5 e8 b2 b3 27 bc |<....R..Bk....'.|
|
||||
00000100 80 a6 53 2a 9f 57 d2 de a3 f8 7f 84 2c 01 c9 d9 |..S*.W......,...|
|
||||
00000110 4f e0 3f e7 a7 1e 46 b7 47 dc f0 53 d2 d2 e1 99 |O.?...F.G..S....|
|
||||
00000120 0b b7 b3 49 d0 3c a5 e8 26 ce 2c 51 42 2c 0f 48 |...I.<..&.,QB,.H|
|
||||
00000130 b1 9a 1a dd 24 d1 06 d8 34 bf 09 2e 20 cc 3d 3d |....$...4... .==|
|
||||
00000140 e2 5a e5 e4 44 b7 ae 57 49 0a |.Z..D..WI.|
|
||||
0000014a
|
||||
```
|
||||
|
||||
The etcd key should be prefixed with `k8s:enc:aescbc:v1:key1`, which indicates the `aescbc` provider was used to encrypt the data with the `key1` encryption key.
|
||||
|
|
@ -66,8 +73,8 @@ kubectl get pods -l app=nginx
|
|||
> output
|
||||
|
||||
```
|
||||
NAME READY STATUS RESTARTS AGE
|
||||
nginx-554b9c67f9-vt5rn 1/1 Running 0 10s
|
||||
NAME READY STATUS RESTARTS AGE
|
||||
nginx-f89759699-kpn5m 1/1 Running 0 10s
|
||||
```
|
||||
|
||||
### Port Forwarding
|
||||
|
|
@ -103,13 +110,13 @@ curl --head http://127.0.0.1:8080
|
|||
|
||||
```
|
||||
HTTP/1.1 200 OK
|
||||
Server: nginx/1.17.3
|
||||
Date: Sat, 14 Sep 2019 21:10:11 GMT
|
||||
Server: nginx/1.19.1
|
||||
Date: Sat, 18 Jul 2020 07:14:00 GMT
|
||||
Content-Type: text/html
|
||||
Content-Length: 612
|
||||
Last-Modified: Tue, 13 Aug 2019 08:50:00 GMT
|
||||
Last-Modified: Tue, 07 Jul 2020 15:52:25 GMT
|
||||
Connection: keep-alive
|
||||
ETag: "5d5279b8-264"
|
||||
ETag: "5f049a39-264"
|
||||
Accept-Ranges: bytes
|
||||
```
|
||||
|
||||
|
|
@ -135,7 +142,8 @@ kubectl logs $POD_NAME
|
|||
> output
|
||||
|
||||
```
|
||||
127.0.0.1 - - [14/Sep/2019:21:10:11 +0000] "HEAD / HTTP/1.1" 200 0 "-" "curl/7.52.1" "-"
|
||||
...
|
||||
127.0.0.1 - - [18/Jul/2020:07:14:00 +0000] "HEAD / HTTP/1.1" 200 0 "-" "curl/7.64.0" "-"
|
||||
```
|
||||
|
||||
### Exec
|
||||
|
|
@ -151,7 +159,7 @@ kubectl exec -ti $POD_NAME -- nginx -v
|
|||
> output
|
||||
|
||||
```
|
||||
nginx version: nginx/1.17.3
|
||||
nginx version: nginx/1.19.1
|
||||
```
|
||||
|
||||
## Services
|
||||
|
|
@ -198,13 +206,13 @@ curl -I http://${EXTERNAL_IP}:${NODE_PORT}
|
|||
|
||||
```
|
||||
HTTP/1.1 200 OK
|
||||
Server: nginx/1.17.3
|
||||
Date: Sat, 14 Sep 2019 21:12:35 GMT
|
||||
Server: nginx/1.19.1
|
||||
Date: Sat, 18 Jul 2020 07:16:41 GMT
|
||||
Content-Type: text/html
|
||||
Content-Length: 612
|
||||
Last-Modified: Tue, 13 Aug 2019 08:50:00 GMT
|
||||
Last-Modified: Tue, 07 Jul 2020 15:52:25 GMT
|
||||
Connection: keep-alive
|
||||
ETag: "5d5279b8-264"
|
||||
ETag: "5f049a39-264"
|
||||
Accept-Ranges: bytes
|
||||
```
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue