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# Kubernetes The Hard Way | ||
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{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"*", "nonResourcePath": "*", "readonly": true}} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"admin", "namespace": "*", "resource": "*", "apiGroup": "*" }} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"scheduler", "namespace": "*", "resource": "pods", "readonly": true }} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"scheduler", "namespace": "*", "resource": "bindings" }} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"kubelet", "namespace": "*", "resource": "pods", "readonly": true }} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"kubelet", "namespace": "*", "resource": "services", "readonly": true }} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"kubelet", "namespace": "*", "resource": "endpoints", "readonly": true }} | ||
{"apiVersion": "abac.authorization.kubernetes.io/v1beta1", "kind": "Policy", "spec": {"user":"kubelet", "namespace": "*", "resource": "events" }} |
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# Certificate Authority | ||
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In this lab you will setup the necessary PKI infrastructure to secure the Kuberentes API for remote communication. This lab will leverage CloudFlare's PKI toolkit, [cfssl](https://github.com/cloudflare/cfssl), to bootstrap a Certificate Authority. | ||
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## Initialize a CA | ||
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### Create the CA configuration file | ||
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``` | ||
echo '{ | ||
"signing": { | ||
"default": { | ||
"expiry": "8760h" | ||
}, | ||
"profiles": { | ||
"kubernetes": { | ||
"usages": ["signing", "key encipherment", "server auth", "client auth"], | ||
"expiry": "8760h" | ||
} | ||
} | ||
} | ||
}' > ca-config.json | ||
``` | ||
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### Generate the CA certificate and private key | ||
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Create the CA CSR: | ||
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``` | ||
echo '{ | ||
"CN": "Kubernetes", | ||
"key": { | ||
"algo": "rsa", | ||
"size": 2048 | ||
}, | ||
"names": [ | ||
{ | ||
"C": "US", | ||
"L": "Portland", | ||
"O": "Kubernetes", | ||
"OU": "CA", | ||
"ST": "Oregon" | ||
} | ||
] | ||
}' > ca-csr.json | ||
``` | ||
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Generate the CA certificate and private key: | ||
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``` | ||
cfssl gencert -initca ca-csr.json | cfssljson -bare ca | ||
``` | ||
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Results: | ||
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``` | ||
ca-key.pem | ||
ca.csr | ||
ca.pem | ||
``` | ||
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``` | ||
openssl x509 -in ca.pem -text -noout | ||
``` | ||
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## Generate Server and Client Certs | ||
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### Generate the kube-apiserver server cert | ||
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``` | ||
echo '{ | ||
"CN": "kubernetes", | ||
"hosts": [ | ||
"10.240.0.10", | ||
"10.240.0.11", | ||
"10.240.0.12", | ||
"10.240.0.20", | ||
"10.240.0.21", | ||
"10.240.0.22", | ||
"10.240.0.30", | ||
"10.240.0.31", | ||
"10.240.0.32", | ||
"146.148.34.151", | ||
"127.0.0.1" | ||
], | ||
"key": { | ||
"algo": "rsa", | ||
"size": 2048 | ||
}, | ||
"names": [ | ||
{ | ||
"C": "US", | ||
"L": "Portland", | ||
"O": "Kubernetes", | ||
"OU": "Cluster", | ||
"ST": "Oregon" | ||
} | ||
] | ||
}' > kubernetes-csr.json | ||
``` | ||
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``` | ||
cfssl gencert \ | ||
-ca=ca.pem \ | ||
-ca-key=ca-key.pem \ | ||
-config=ca-config.json \ | ||
-profile=kubernetes \ | ||
kubernetes-csr.json | cfssljson -bare kubernetes | ||
``` | ||
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``` | ||
openssl x509 -in kubernetes.pem -text -noout | ||
``` |
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# Downloads | ||
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## Kubernetes 1.3.0 | ||
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``` | ||
wget https://github.com/kubernetes/kubernetes/releases/download/v1.3.0/kubernetes.tar.gz | ||
``` | ||
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## etcd 3.0.1 | ||
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``` | ||
wget https://github.com/coreos/etcd/releases/download/v3.0.1/etcd-v3.0.1-linux-amd64.tar.gz | ||
``` | ||
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## Docker 1.11.2 | ||
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``` | ||
wget https://get.docker.com/builds/Linux/x86_64/docker-1.11.2.tgz | ||
``` | ||
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``` | ||
tar -xvf kubernetes.tar.gz | ||
``` | ||
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``` | ||
tar -xvf kubernetes/server/kubernetes-server-linux-amd64.tar.gz | ||
``` | ||
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``` | ||
``` |
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