mirror of
https://github.com/kyverno/kyverno.git
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88 lines
1.9 KiB
Bash
Executable file
88 lines
1.9 KiB
Bash
Executable file
#!/bin/bash
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for i in "$@"
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do
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case $i in
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--service=*)
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service="${i#*=}"
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shift
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;;
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--namespace=*)
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namespace="${i#*=}"
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shift
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;;
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--serverIp=*)
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serverIp="${i#*=}"
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shift
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;;
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esac
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done
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echo "service is $service"
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echo "namespace is $namespace"
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echo "serverIp is $serverIp"
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destdir="certs"
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if [ ! -d "$destdir" ]; then
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mkdir ${destdir} || exit 1
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fi
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tmpdir=$(mktemp -d)
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cat <<EOF >> ${tmpdir}/csr.conf
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[req]
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req_extensions = v3_req
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distinguished_name = req_distinguished_name
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[req_distinguished_name]
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[ v3_req ]
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basicConstraints = CA:FALSE
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keyUsage = nonRepudiation, digitalSignature, keyEncipherment
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extendedKeyUsage = serverAuth
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subjectAltName = @alt_names
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[alt_names]
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DNS.1 = ${service}
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DNS.2 = ${service}.${namespace}
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DNS.3 = ${service}.${namespace}.svc
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DNS.4 = ${serverIp}
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EOF
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outKeyFile=${destdir}/server-key.pem
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outCertFile=${destdir}/server.crt
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openssl genrsa -out ${outKeyFile} 2048 || exit 2
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if [ ! -z "${service}" ]; then
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if [ ! -z "${namespace}" ]; then
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subjectCN="${service}.${namespace}.svc"
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else
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subjectCN="${service}"
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fi
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else
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subjectCN=${serverIp}
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fi
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echo "Generating certificate for CN=${subjectCN}"
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openssl req -new -key ${destdir}/server-key.pem -subj "/CN=${subjectCN}" -out ${tmpdir}/server.csr -config ${tmpdir}/csr.conf || exit 3
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CSR_NAME=${service}.cert-request
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kubectl delete csr ${CSR_NAME} 2>/dev/null
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cat <<EOF | kubectl create -f -
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apiVersion: certificates.k8s.io/v1beta1
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kind: CertificateSigningRequest
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metadata:
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name: ${CSR_NAME}
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spec:
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groups:
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- system:authenticated
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request: $(cat ${tmpdir}/server.csr | base64 | tr -d '\n')
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usages:
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- digital signature
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- key encipherment
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- server auth
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EOF
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kubectl certificate approve ${CSR_NAME} || exit 4
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kubectl get csr ${CSR_NAME} -o jsonpath='{.status.certificate}' | base64 --decode > ${outCertFile} || exit 5
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echo "Generated:"
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echo ${outKeyFile}
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echo ${outCertFile}
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