support older bash versions in generate-flavors.sh (#446)

Author: eljohnson92

hack/generate-flavors.sh

@@ -13,11 +13,6 @@ SUPPORTED_CLUSTERCLASSES=(
     "clusterclass-kubeadm"
 )
 
-declare -A CERT_HOSTPATH=( ["rke2"]="/var/lib/rancher/rke2/server/tls" ["k3s"]="/var/lib/rancher/k3s/server/tls" ["kubeadm"]="/etc/kubernetes/pki")
-declare -A CACERT=( ["rke2"]="server-ca.crt" ["k3s"]="server-ca.crt" ["kubeadm"]="ca.crt")
-declare -A CERT=( ["rke2"]="server-client.crt" ["k3s"]="server-client.crt" ["kubeadm"]="healthcheck-client.crt")
-declare -A KEY=( ["rke2"]="server-client.key" ["k3s"]="server-client.key" ["kubeadm"]="healthcheck-client.key")
-
 for clusterclass in ${SUPPORTED_CLUSTERCLASSES[@]}; do
     # clusterctl expects clusterclass not have the "cluster-template" prefix
     # except for the actual cluster template using the clusterclass
@@ -28,6 +23,22 @@ done
 
 
 for distro in ${SUPPORTED_DISTROS[@]}; do
+    if [[ ${distro} == "kubeadm" ]]; then
+      CACERT="ca.crt"
+      CERT="healthcheck-client.crt"
+      KEY="healthcheck-client.key"
+      CERT_HOSTPATH="/etc/kubernetes/pki"
+    elif [[ ${distro} == "k3s" ]]; then
+      CACERT="server-ca.crt"
+      CERT="server-client.crt"
+      KEY="server-client.key"
+      CERT_HOSTPATH="/var/lib/rancher/k3s/server/tls"
+    elif [[ ${distro} == "rke2" ]]; then
+      CACERT="server-ca.crt"
+      CERT="server-client.crt"
+      KEY="server-client.key"
+      CERT_HOSTPATH="/var/lib/rancher/rke2/server/tls"
+    fi
     for name in $(find "${FLAVORS_DIR}/${distro}/"* -maxdepth 0 -type d -print0 | xargs -0 -I {} basename {}); do
         if [[ ${name} == "default" ]]; then
             echo "****** Generating ${distro} flavor ******"
@@ -36,7 +47,7 @@ for distro in ${SUPPORTED_DISTROS[@]}; do
             echo "****** Generating ${distro}-${name} flavor ******"
             kustomize build "${FLAVORS_DIR}/${distro}/${name}" > "${REPO_ROOT}/templates/cluster-template-${distro}-${name}.yaml"
             if grep -Fq "etcd-backup-restore" "${REPO_ROOT}/templates/cluster-template-${distro}-${name}.yaml"; then
-                sed -i -e "s|\${CERTPATH}|${CERT_HOSTPATH[$distro]}|g; s|\${CACERTFILE}|${CACERT[$distro]}|g; s|\${CERTFILE}|${CERT[$distro]}|g; s|\${KEYFILE}|${KEY[$distro]}|g" "${REPO_ROOT}/templates/cluster-template-${distro}-${name}.yaml"
+                sed -i -e "s|\${CERTPATH}|${CERT_HOSTPATH}|g; s|\${CACERTFILE}|${CACERT}|g; s|\${CERTFILE}|${CERT}|g; s|\${KEYFILE}|${KEY}|g" "${REPO_ROOT}/templates/cluster-template-${distro}-${name}.yaml"
             fi
         fi
     done