|
| 1 | +#!/usr/bin/env bash |
| 2 | + |
| 3 | +set -euo pipefail |
| 4 | + |
| 5 | +required=( |
| 6 | + K8S_CTX |
| 7 | + MDB_NS |
| 8 | + MDB_RESOURCE_NAME |
| 9 | + MDB_MEMBERS |
| 10 | + MDB_TLS_CA_SECRET_NAME |
| 11 | + MDB_TLS_SERVER_CERT_SECRET_NAME |
| 12 | + MDB_SEARCH_TLS_SECRET_NAME |
| 13 | + CERT_MANAGER_NAMESPACE |
| 14 | +) |
| 15 | +missing=() |
| 16 | +for var in "${required[@]}"; do |
| 17 | + [[ -n "${!var:-}" ]] || missing+=("${var}") |
| 18 | +done |
| 19 | +if (( ${#missing[@]} )); then |
| 20 | + echo "Missing required environment variables: ${missing[*]}" >&2 |
| 21 | + exit 1 |
| 22 | +fi |
| 23 | + |
| 24 | +helm repo add jetstack https://charts.jetstack.io --force-update >/dev/null 2>&1 || true |
| 25 | +helm upgrade --install \ |
| 26 | + cert-manager jetstack/cert-manager \ |
| 27 | + --kube-context "${K8S_CTX}" \ |
| 28 | + --namespace "${CERT_MANAGER_NAMESPACE}" \ |
| 29 | + --create-namespace \ |
| 30 | + --set crds.enabled=true >/dev/null 2>&1 |
| 31 | + |
| 32 | +for deployment in cert-manager cert-manager-cainjector cert-manager-webhook; do |
| 33 | + kubectl --context "${K8S_CTX}" \ |
| 34 | + -n "${CERT_MANAGER_NAMESPACE}" \ |
| 35 | + wait --for=condition=Available "deployment/${deployment}" --timeout=300s |
| 36 | +done |
| 37 | + |
| 38 | +self_signed_issuer="${MDB_RESOURCE_NAME}-selfsigned-issuer" |
| 39 | +ca_cert_name="${MDB_RESOURCE_NAME}-ca" |
| 40 | +ca_issuer="${MDB_RESOURCE_NAME}-ca-issuer" |
| 41 | +server_certificate="${MDB_RESOURCE_NAME}-server-tls" |
| 42 | +search_certificate="${MDB_RESOURCE_NAME}-search-tls" |
| 43 | + |
| 44 | +kubectl apply --context "${K8S_CTX}" -n "${MDB_NS}" -f - <<EOF_MANIFEST |
| 45 | +apiVersion: cert-manager.io/v1 |
| 46 | +kind: Issuer |
| 47 | +metadata: |
| 48 | + name: ${self_signed_issuer} |
| 49 | + namespace: ${MDB_NS} |
| 50 | +spec: |
| 51 | + selfSigned: {} |
| 52 | +--- |
| 53 | +apiVersion: cert-manager.io/v1 |
| 54 | +kind: Certificate |
| 55 | +metadata: |
| 56 | + name: ${ca_cert_name} |
| 57 | + namespace: ${MDB_NS} |
| 58 | +spec: |
| 59 | + isCA: true |
| 60 | + secretName: ${MDB_TLS_CA_SECRET_NAME} |
| 61 | + commonName: ${MDB_RESOURCE_NAME}-svc.${MDB_NS}.svc.cluster.local |
| 62 | + privateKey: |
| 63 | + algorithm: RSA |
| 64 | + size: 2048 |
| 65 | + issuerRef: |
| 66 | + kind: Issuer |
| 67 | + name: ${self_signed_issuer} |
| 68 | + duration: 240h0m0s |
| 69 | + renewBefore: 120h0m0s |
| 70 | +--- |
| 71 | +apiVersion: cert-manager.io/v1 |
| 72 | +kind: Issuer |
| 73 | +metadata: |
| 74 | + name: ${ca_issuer} |
| 75 | + namespace: ${MDB_NS} |
| 76 | +spec: |
| 77 | + ca: |
| 78 | + secretName: ${MDB_TLS_CA_SECRET_NAME} |
| 79 | +EOF_MANIFEST |
| 80 | + |
| 81 | +kubectl --context "${K8S_CTX}" -n "${MDB_NS}" wait --for=condition=Ready issuer "${self_signed_issuer}" --timeout=120s |
| 82 | +kubectl --context "${K8S_CTX}" -n "${MDB_NS}" wait --for=condition=Ready certificate "${ca_cert_name}" --timeout=300s |
| 83 | +kubectl --context "${K8S_CTX}" -n "${MDB_NS}" wait --for=condition=Ready issuer "${ca_issuer}" --timeout=120s |
| 84 | + |
| 85 | +if ! kubectl --context "${K8S_CTX}" -n "${MDB_NS}" get secret "${MDB_TLS_CA_SECRET_NAME}" -o jsonpath='{.data.ca\\.crt}' 2>/dev/null | grep -q .; then |
| 86 | + tls_crt=$(kubectl --context "${K8S_CTX}" -n "${MDB_NS}" get secret "${MDB_TLS_CA_SECRET_NAME}" -o jsonpath='{.data.tls\\.crt}' || true) |
| 87 | + if [[ -n "${tls_crt}" ]]; then |
| 88 | + kubectl --context "${K8S_CTX}" -n "${MDB_NS}" patch secret "${MDB_TLS_CA_SECRET_NAME}" \ |
| 89 | + --type=merge \ |
| 90 | + -p "{"data":{"ca.crt":"${tls_crt}"}}" |
| 91 | + fi |
| 92 | +fi |
| 93 | + |
| 94 | +mongo_dns_names=() |
| 95 | +for ((member = 0; member < ${MDB_MEMBERS}; member++)); do |
| 96 | + mongo_dns_names+=("${MDB_RESOURCE_NAME}-${member}") |
| 97 | + mongo_dns_names+=("${MDB_RESOURCE_NAME}-${member}.${MDB_RESOURCE_NAME}-svc.${MDB_NS}.svc.cluster.local") |
| 98 | +done |
| 99 | +mongo_dns_names+=( |
| 100 | + "${MDB_RESOURCE_NAME}-svc.${MDB_NS}.svc.cluster.local" |
| 101 | + "*.${MDB_RESOURCE_NAME}-svc.${MDB_NS}.svc.cluster.local" |
| 102 | +) |
| 103 | + |
| 104 | +search_dns_names=( |
| 105 | + "${MDB_RESOURCE_NAME}-search-0" |
| 106 | + "${MDB_RESOURCE_NAME}-search-0.${MDB_RESOURCE_NAME}-search-svc.${MDB_NS}.svc.cluster.local" |
| 107 | + "${MDB_RESOURCE_NAME}-search-svc.${MDB_NS}.svc.cluster.local" |
| 108 | +) |
| 109 | + |
| 110 | +render_dns_list() { |
| 111 | + local dns_list=("$@") |
| 112 | + for dns in "${dns_list[@]}"; do |
| 113 | + printf " - \"%s\"\n" "${dns}" |
| 114 | + done |
| 115 | +} |
| 116 | + |
| 117 | +kubectl apply --context "${K8S_CTX}" -n "${MDB_NS}" -f - <<EOF_MANIFEST |
| 118 | +apiVersion: cert-manager.io/v1 |
| 119 | +kind: Certificate |
| 120 | +metadata: |
| 121 | + name: ${server_certificate} |
| 122 | + namespace: ${MDB_NS} |
| 123 | +spec: |
| 124 | + secretName: ${MDB_TLS_SERVER_CERT_SECRET_NAME} |
| 125 | + issuerRef: |
| 126 | + kind: Issuer |
| 127 | + name: ${ca_issuer} |
| 128 | + duration: 240h0m0s |
| 129 | + renewBefore: 120h0m0s |
| 130 | + usages: |
| 131 | + - digital signature |
| 132 | + - key encipherment |
| 133 | + - server auth |
| 134 | + - client auth |
| 135 | + dnsNames: |
| 136 | +$(render_dns_list "${mongo_dns_names[@]}") |
| 137 | +--- |
| 138 | +apiVersion: cert-manager.io/v1 |
| 139 | +kind: Certificate |
| 140 | +metadata: |
| 141 | + name: ${search_certificate} |
| 142 | + namespace: ${MDB_NS} |
| 143 | +spec: |
| 144 | + secretName: ${MDB_SEARCH_TLS_SECRET_NAME} |
| 145 | + issuerRef: |
| 146 | + kind: Issuer |
| 147 | + name: ${ca_issuer} |
| 148 | + duration: 240h0m0s |
| 149 | + renewBefore: 120h0m0s |
| 150 | + usages: |
| 151 | + - digital signature |
| 152 | + - key encipherment |
| 153 | + - server auth |
| 154 | + - client auth |
| 155 | + dnsNames: |
| 156 | +$(render_dns_list "${search_dns_names[@]}") |
| 157 | +EOF_MANIFEST |
| 158 | + |
| 159 | +kubectl --context "${K8S_CTX}" -n "${MDB_NS}" wait --for=condition=Ready certificate "${server_certificate}" --timeout=300s |
| 160 | +kubectl --context "${K8S_CTX}" -n "${MDB_NS}" wait --for=condition=Ready certificate "${search_certificate}" --timeout=300s |
| 161 | + |
| 162 | +echo "Community cert-manager TLS assets ready." |
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