487 lines
18 KiB
Bash
Executable File
487 lines
18 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -o errexit
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set -o pipefail
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# shellcheck disable=SC2155
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export PROJECT_DIR=$(git rev-parse --show-toplevel)
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# shellcheck disable=SC2155
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export SOPS_AGE_KEY_FILE=~/.config/sops/age/keys.txt
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# shellcheck disable=SC1091
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source "${PROJECT_DIR}/.config.env"
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show_help() {
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cat << EOF
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Usage: $(basename "$0") <options>
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-h, --help Display help
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--verify Verify .config.env settings
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EOF
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}
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main() {
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local verify=
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parse_command_line "$@"
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verify_binaries
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if [[ "${verify}" == 1 ]]; then
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verify_ansible_hosts
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verify_metallb
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verify_kubevip
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verify_addressing
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verify_age
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verify_git_repository
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verify_cloudflare
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verify_success
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else
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# generate sops configuration file
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envsubst < "${PROJECT_DIR}/tmpl/.sops.yaml" \
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> "${PROJECT_DIR}/.sops.yaml"
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# generate cluster settings
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envsubst < "${PROJECT_DIR}/tmpl/cluster/cluster-settings.yaml" \
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> "${PROJECT_DIR}/cluster/base/cluster-settings.yaml"
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envsubst < "${PROJECT_DIR}/tmpl/cluster/gotk-sync.yaml" \
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> "${PROJECT_DIR}/cluster/base/flux-system/gotk-sync.yaml"
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envsubst < "${PROJECT_DIR}/tmpl/cluster/kube-vip-daemonset.yaml" \
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> "${PROJECT_DIR}/cluster/core/kube-system/kube-vip/daemon-set.yaml"
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# generate cluster secrets
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envsubst < "${PROJECT_DIR}/tmpl/cluster/cluster-secrets.sops.yaml" \
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> "${PROJECT_DIR}/cluster/base/cluster-secrets.sops.yaml"
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envsubst < "${PROJECT_DIR}/tmpl/cluster/cert-manager-secret.sops.yaml" \
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> "${PROJECT_DIR}/cluster/core/cert-manager/secret.sops.yaml"
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envsubst < "${PROJECT_DIR}/tmpl/cluster/cloudflare-ddns-secret.sops.yaml" \
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> "${PROJECT_DIR}/cluster/apps/networking/cloudflare-ddns/secret.sops.yaml"
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envsubst < "${PROJECT_DIR}/tmpl/cluster/external-dns-secret.sops.yaml" \
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> "${PROJECT_DIR}/cluster/apps/networking/external-dns/secret.sops.yaml"
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# encrypt cluster secrets
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sops --encrypt --in-place "${PROJECT_DIR}/cluster/base/cluster-secrets.sops.yaml"
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sops --encrypt --in-place "${PROJECT_DIR}/cluster/core/cert-manager/secret.sops.yaml"
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sops --encrypt --in-place "${PROJECT_DIR}/cluster/apps/networking/cloudflare-ddns/secret.sops.yaml"
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sops --encrypt --in-place "${PROJECT_DIR}/cluster/apps/networking/external-dns/secret.sops.yaml"
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# generate terraform secrets
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envsubst < "${PROJECT_DIR}/tmpl/terraform/secret.sops.yaml" \
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> "${PROJECT_DIR}/provision/terraform/cloudflare/secret.sops.yaml"
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# encrypt terraform secrets
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sops --encrypt --in-place "${PROJECT_DIR}/provision/terraform/cloudflare/secret.sops.yaml"
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# generate ansible settings
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envsubst < "${PROJECT_DIR}/tmpl/ansible/kube-vip.yml" \
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> "${PROJECT_DIR}/provision/ansible/inventory/group_vars/kubernetes/kube-vip.yml"
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# generate ansible hosts file and secrets
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generate_ansible_hosts
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generate_ansible_host_secrets
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setup_github_webhook
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success
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fi
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}
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parse_command_line() {
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while :; do
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case "${1:-}" in
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-h|--help)
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show_help
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exit
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;;
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--verify)
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verify=1
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;;
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*)
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break
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;;
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esac
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shift
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done
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if [[ -z "$verify" ]]; then
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verify=0
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fi
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}
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_has_binary() {
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command -v "${1}" >/dev/null 2>&1 || {
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_log "ERROR" "${1} is not installed or not found in \$PATH"
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exit 1
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}
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}
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_has_optional_envar() {
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local option="${1}"
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# shellcheck disable=SC2015
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[[ "${!option}" == "" ]] && {
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_log "WARN" "Unset optional variable ${option}"
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} || {
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_log "INFO" "Found variable '${option}' with value '${!option}'"
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}
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}
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_has_envar() {
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local option="${1}"
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# shellcheck disable=SC2015
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[[ "${!option}" == "" ]] && {
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_log "ERROR" "Unset variable ${option}"
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exit 1
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} || {
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_log "INFO" "Found variable '${option}' with value '${!option}'"
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}
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}
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_has_valid_ip() {
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local ip="${1}"
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local variable_name="${2}"
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if ! ipcalc "${ip}" | awk 'BEGIN{FS=":"; is_invalid=0} /^INVALID/ {is_invalid=1; print $1} END{exit is_invalid}' >/dev/null 2>&1; then
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_log "INFO" "Variable '${variable_name}' has an invalid IP address '${ip}'"
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exit 1
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else
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_log "INFO" "Variable '${variable_name}' has a valid IP address '${ip}'"
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fi
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}
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verify_addressing() {
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local found_kube_vip="false"
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local found_k8s_gateway="false"
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local found_traefik="false"
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# Verify the metallb min and metallb ceiling are in the same network
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metallb_subnet_min=$(echo "${BOOTSTRAP_METALLB_LB_RANGE}" | cut -d- -f1 | cut -d. -f1,2,3)
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metallb_subnet_ceil=$(echo "${BOOTSTRAP_METALLB_LB_RANGE}" | cut -d- -f2 | cut -d. -f1,2,3)
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if [[ "${metallb_subnet_min}" != "${metallb_subnet_ceil}" ]]; then
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_log "ERROR" "The provided MetalLB IP range '${BOOTSTRAP_METALLB_LB_RANGE}' is not in the same subnet"
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exit 1
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fi
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# Verify the node IP addresses are on the same network as the metallb range
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for var in "${!BOOTSTRAP_ANSIBLE_HOST_ADDR_@}"; do
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node_subnet=$(echo "${!var}" | cut -d. -f1,2,3)
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if [[ "${node_subnet}" != "${metallb_subnet_min}" ]]; then
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_log "ERROR" "The subnet for node '${!var}' is not in the same subnet as the provided metallb range '${BOOTSTRAP_METALLB_LB_RANGE}'"
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exit 1
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fi
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done
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# Verify the kube-vip IP is in the same network as the metallb range
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kubevip_subnet=$(echo "${BOOTSTRAP_KUBE_VIP_ADDR}" | cut -d. -f1,2,3)
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if [[ "${kubevip_subnet}" != "${metallb_subnet_min}" ]]; then
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_log "ERROR" "The subnet for kupe-vip '${BOOTSTRAP_KUBE_VIP_ADDR}' is not the same subnet as the provided metallb range '${BOOTSTRAP_METALLB_LB_RANGE}'"
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exit 1
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fi
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# Depending on the IP address, verify if it should be in the metallb range or not
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metallb_octet_min=$(echo "${BOOTSTRAP_METALLB_LB_RANGE}" | cut -d- -f1 | cut -d. -f4)
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metallb_octet_ceil=$(echo "${BOOTSTRAP_METALLB_LB_RANGE}" | cut -d- -f2 | cut -d. -f4)
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for (( octet=metallb_octet_min; octet<=metallb_octet_ceil; octet++ )); do
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addr="${metallb_subnet_min}.${octet}"
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if [[ "${addr}" == "${BOOTSTRAP_KUBE_VIP_ADDR}" ]]; then
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found_kube_vip="true"
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fi
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if [[ "${addr}" == "${BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR}" ]]; then
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found_k8s_gateway="true"
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fi
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if [[ "${addr}" == "${BOOTSTRAP_METALLB_TRAEFIK_ADDR}" ]]; then
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found_traefik="true"
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fi
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for var in "${!BOOTSTRAP_ANSIBLE_HOST_ADDR_@}"; do
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if [[ "${!var}" == "${addr}" ]]; then
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_log "ERROR" "The IP for node '${!var}' should NOT be in the provided metallb range '${BOOTSTRAP_METALLB_LB_RANGE}'"
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exit 1
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fi
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done
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done
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if [[ "${found_kube_vip}" == "true" ]]; then
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_log "ERROR" "The IP for kube-vip '${BOOTSTRAP_KUBE_VIP_ADDR}' should NOT be in the provided metallb range '${BOOTSTRAP_METALLB_LB_RANGE}'"
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exit 1
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fi
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if [[ "${found_k8s_gateway}" == "false" ]]; then
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_log "ERROR" "The IP for k8s_gateway '${BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR}' should be in the provided metallb range '${BOOTSTRAP_METALLB_LB_RANGE}'"
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exit 1
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fi
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if [[ "${found_traefik}" == "false" ]]; then
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_log "ERROR" "The IP for traefik '${BOOTSTRAP_METALLB_TRAEFIK_ADDR}' should be in the provided metallb range '${BOOTSTRAP_METALLB_LB_RANGE}'"
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exit 1
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fi
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}
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verify_age() {
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_has_envar "BOOTSTRAP_AGE_PUBLIC_KEY"
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_has_envar "SOPS_AGE_KEY_FILE"
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if [[ ! "$BOOTSTRAP_AGE_PUBLIC_KEY" =~ ^age.* ]]; then
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_log "ERROR" "BOOTSTRAP_AGE_PUBLIC_KEY does not start with age"
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exit 1
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else
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_log "INFO" "Age public key is in the correct format"
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fi
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if [[ ! -f ~/.config/sops/age/keys.txt ]]; then
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_log "ERROR" "Unable to find Age file keys.txt in ~/.config/sops/age"
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exit 1
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else
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_log "INFO" "Found Age public key '${BOOTSTRAP_AGE_PUBLIC_KEY}'"
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fi
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}
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verify_binaries() {
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_has_binary "ansible"
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_has_binary "envsubst"
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_has_binary "flux"
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_has_binary "git"
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_has_binary "age"
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_has_binary "helm"
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_has_binary "ipcalc"
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_has_binary "jq"
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_has_binary "yq"
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_has_binary "sops"
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_has_binary "ssh"
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_has_binary "task"
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_has_binary "terraform"
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}
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verify_kubevip() {
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_has_envar "BOOTSTRAP_KUBE_VIP_ADDR"
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_has_valid_ip "${BOOTSTRAP_KUBE_VIP_ADDR}" "BOOTSTRAP_KUBE_VIP_ADDR"
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}
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verify_metallb() {
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local ip_floor=
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local ip_ceil=
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_has_envar "BOOTSTRAP_METALLB_LB_RANGE"
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_has_envar "BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR"
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_has_envar "BOOTSTRAP_METALLB_TRAEFIK_ADDR"
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ip_floor=$(echo "${BOOTSTRAP_METALLB_LB_RANGE}" | cut -d- -f1)
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ip_ceil=$(echo "${BOOTSTRAP_METALLB_LB_RANGE}" | cut -d- -f2)
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_has_valid_ip "${ip_floor}" "BOOTSTRAP_METALLB_LB_RANGE"
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_has_valid_ip "${ip_ceil}" "BOOTSTRAP_METALLB_LB_RANGE"
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_has_valid_ip "${BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR}" "BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR"
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_has_valid_ip "${BOOTSTRAP_METALLB_TRAEFIK_ADDR}" "BOOTSTRAP_METALLB_TRAEFIK_ADDR"
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}
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verify_git_repository() {
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_has_envar "BOOTSTRAP_GIT_REPOSITORY"
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export GIT_TERMINAL_PROMPT=0
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pushd "$(mktemp -d)" >/dev/null 2>&1
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[ "$(git ls-remote "${BOOTSTRAP_GIT_REPOSITORY}" 2> /dev/null)" ] || {
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_log "ERROR" "Unable to find the remote Git repository '${BOOTSTRAP_GIT_REPOSITORY}'"
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exit 1
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}
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popd >/dev/null 2>&1
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export GIT_TERMINAL_PROMPT=1
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}
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setup_github_webhook() {
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WEBHOOK_SECRET="${BOOTSTRAP_FLUX_GITHUB_WEBHOOK_SECRET:-ignored}"
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if [[ "${WEBHOOK_SECRET}" != "ignored" ]]; then
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if [[ "${WEBHOOK_SECRET}" == "generated" ]]; then
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WEBHOOK_SECRET="$(openssl rand -base64 30)"
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fi
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export BOOTSTRAP_FLUX_GITHUB_WEBHOOK_SECRET="${WEBHOOK_SECRET}"
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_log "INFO" "Using GitHub Token '${WEBHOOK_SECRET}' for Flux"
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cp -rf "${PROJECT_DIR}/tmpl/cluster/flux-system" "${PROJECT_DIR}/cluster/apps/"
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envsubst < "${PROJECT_DIR}/tmpl/cluster/flux-system/webhooks/github/secret.sops.yaml" \
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> "${PROJECT_DIR}/cluster/apps/flux-system/webhooks/github/secret.sops.yaml"
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sops --encrypt --in-place "${PROJECT_DIR}/cluster/apps/flux-system/webhooks/github/secret.sops.yaml"
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if [[ $(yq eval --no-doc 'contains({"resources": ["flux-system"]})' "${PROJECT_DIR}/cluster/apps/kustomization.yaml") == false ]]; then
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yq --inplace '.resources += [ "flux-system" ]' "${PROJECT_DIR}/cluster/apps/kustomization.yaml"
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fi
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fi
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}
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verify_cloudflare() {
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local account_zone=
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local errors=
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_has_envar "BOOTSTRAP_CLOUDFLARE_APIKEY"
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_has_envar "BOOTSTRAP_CLOUDFLARE_DOMAIN"
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_has_envar "BOOTSTRAP_CLOUDFLARE_EMAIL"
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# Try to retrieve zone information from Cloudflare's API
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account_zone=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=${BOOTSTRAP_CLOUDFLARE_DOMAIN}&status=active" \
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-H "X-Auth-Email: ${BOOTSTRAP_CLOUDFLARE_EMAIL}" \
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-H "X-Auth-Key: ${BOOTSTRAP_CLOUDFLARE_APIKEY}" \
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-H "Content-Type: application/json"
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)
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if [[ "$(echo "${account_zone}" | jq ".success")" == "true" ]]; then
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_log "INFO" "Verified Cloudflare Account and Zone information"
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else
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errors=$(echo "${account_zone}" | jq -c ".errors")
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_log "ERROR" "Unable to get Cloudflare Account and Zone information ${errors}"
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exit 1
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fi
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}
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verify_ansible_hosts() {
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local node_id=
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local node_addr=
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local node_username=
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local node_password=
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local node_control=
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local node_hostname=
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local default_control_node_prefix=
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local default_worker_node_prefix=
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default_control_node_prefix="BOOTSTRAP_ANSIBLE_DEFAULT_CONTROL_NODE_HOSTNAME_PREFIX"
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default_worker_node_prefix="BOOTSTRAP_ANSIBLE_DEFAULT_NODE_HOSTNAME_PREFIX"
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_has_optional_envar "${default_control_node_prefix}"
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_has_optional_envar "${default_worker_node_prefix}"
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for var in "${!BOOTSTRAP_ANSIBLE_HOST_ADDR_@}"; do
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node_id=$(echo "${var}" | awk -F"_" '{print $5}')
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node_addr="BOOTSTRAP_ANSIBLE_HOST_ADDR_${node_id}"
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node_username="BOOTSTRAP_ANSIBLE_SSH_USERNAME_${node_id}"
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node_password="BOOTSTRAP_ANSIBLE_SUDO_PASSWORD_${node_id}"
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node_control="BOOTSTRAP_ANSIBLE_CONTROL_NODE_${node_id}"
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node_hostname="BOOTSTRAP_ANSIBLE_HOSTNAME_${node_id}"
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_has_envar "${node_addr}"
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_has_envar "${node_username}"
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_has_envar "${node_password}"
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_has_envar "${node_control}"
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_has_optional_envar "${node_hostname}"
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if [[ "${!node_addr}" == "${BOOTSTRAP_KUBE_VIP_ADDR}" ]]; then
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_log "ERROR" "The kube-vip IP '${BOOTSTRAP_KUBE_VIP_ADDR}' should not be the same as the IP for node '${!node_addr}'"
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exit 1
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fi
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if [[ "${!node_addr}" == "${BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR}" ]]; then
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_log "ERROR" "The k8s-gateway load balancer IP '${BOOTSTRAP_METALLB_K8S_GATEWAY_ADDR}' should not be the same as the IP for node '${!node_addr}'"
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exit 1
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fi
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if [[ "${!node_addr}" == "${BOOTSTRAP_METALLB_TRAEFIK_ADDR}" ]]; then
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_log "ERROR" "The traefik load balancer IP '${BOOTSTRAP_METALLB_TRAEFIK_ADDR}' should not be the same as the IP for node '${!node_addr}'"
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exit 1
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fi
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if ssh -q -o BatchMode=yes -o ConnectTimeout=5 "${!node_username}"@"${!var}" "true"; then
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_log "INFO" "SSH into host '${!var}' with username '${!node_username}' was successfull"
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else
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_log "ERROR" "SSH into host '${!var}' with username '${!node_username}'was NOT successful, did you copy over your SSH key?"
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exit 1
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fi
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done
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}
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verify_success() {
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_log "INFO" "All checks passed!"
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_log "INFO" "Run the script without --verify to template all the files out"
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exit 0
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}
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generate_ansible_host_secrets() {
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local node_id=
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local node_username=
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local node_password=
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local node_hostname=
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default_control_node_prefix=${BOOTSTRAP_ANSIBLE_DEFAULT_CONTROL_NODE_HOSTNAME_PREFIX:-k8s-}
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default_worker_node_prefix=${BOOTSTRAP_ANSIBLE_DEFAULT_NODE_HOSTNAME_PREFIX:-k8s-}
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for var in "${!BOOTSTRAP_ANSIBLE_HOST_ADDR_@}"; do
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node_id=$(echo "${var}" | awk -F"_" '{print $5}')
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if [[ "${!node_control}" == "true" ]]; then
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node_hostname="BOOTSTRAP_ANSIBLE_HOSTNAME_${node_id}"
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host_key="${!node_hostname:-${default_control_node_prefix}}"
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if [ "${host_key}" == "${default_control_node_prefix}" ]; then
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node_hostname=${default_control_node_prefix}${node_id}
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else
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node_hostname=${!node_hostname}
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fi
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else
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node_hostname="BOOTSTRAP_ANSIBLE_HOSTNAME_${node_id}"
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host_key="${!node_hostname:-${default_worker_node_prefix}}"
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if [ "${host_key}" == "${default_worker_node_prefix}" ]; then
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node_hostname=${default_worker_node_prefix}${node_id}
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else
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node_hostname=${!node_hostname}
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fi
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fi
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{
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node_username="BOOTSTRAP_ANSIBLE_SSH_USERNAME_${node_id}"
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node_password="BOOTSTRAP_ANSIBLE_SUDO_PASSWORD_${node_id}"
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printf "kind: Secret\n"
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printf "ansible_user: %s\n" "${!node_username}"
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printf "ansible_become_pass: %s\n" "${!node_password}"
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} > "${PROJECT_DIR}/provision/ansible/inventory/host_vars/${node_hostname}.sops.yml"
|
|
sops --encrypt --in-place "${PROJECT_DIR}/provision/ansible/inventory/host_vars/${node_hostname}.sops.yml"
|
|
done
|
|
}
|
|
|
|
generate_ansible_hosts() {
|
|
local worker_node_count=
|
|
default_control_node_prefix=${BOOTSTRAP_ANSIBLE_DEFAULT_CONTROL_NODE_HOSTNAME_PREFIX:-k8s-}
|
|
default_worker_node_prefix=${BOOTSTRAP_ANSIBLE_DEFAULT_NODE_HOSTNAME_PREFIX:-k8s-}
|
|
{
|
|
printf -- "---\n"
|
|
printf "kubernetes:\n"
|
|
printf " children:\n"
|
|
printf " master:\n"
|
|
printf " hosts:\n"
|
|
master_node_count=0
|
|
worker_node_count=0
|
|
for var in "${!BOOTSTRAP_ANSIBLE_HOST_ADDR_@}"; do
|
|
node_id=$(echo "${var}" | awk -F"_" '{print $5}')
|
|
node_control="BOOTSTRAP_ANSIBLE_CONTROL_NODE_${node_id}"
|
|
if [[ "${!node_control}" == "true" ]]; then
|
|
master_node_count=$((master_node_count+1))
|
|
node_hostname="BOOTSTRAP_ANSIBLE_HOSTNAME_${node_id}"
|
|
host_key="${!node_hostname:-${default_control_node_prefix}}"
|
|
if [ "${host_key}" == "${default_control_node_prefix}" ]; then
|
|
node_hostname=${default_control_node_prefix}${node_id}
|
|
else
|
|
node_hostname=${!node_hostname}
|
|
fi
|
|
printf " %s:\n" "${node_hostname}"
|
|
printf " ansible_host: %s\n" "${!var}"
|
|
else
|
|
worker_node_count=$((worker_node_count+1))
|
|
fi
|
|
done
|
|
if [[ ${worker_node_count} -gt 0 ]]; then
|
|
printf " worker:\n"
|
|
printf " hosts:\n"
|
|
for var in "${!BOOTSTRAP_ANSIBLE_HOST_ADDR_@}"; do
|
|
node_id=$(echo "${var}" | awk -F"_" '{print $5}')
|
|
node_control="BOOTSTRAP_ANSIBLE_CONTROL_NODE_${node_id}"
|
|
if [[ "${!node_control}" == "false" ]]; then
|
|
node_hostname="BOOTSTRAP_ANSIBLE_HOSTNAME_${node_id}"
|
|
host_key="${!node_hostname:-${default_worker_node_prefix}}"
|
|
if [ "${host_key}" == "${default_worker_node_prefix}" ]; then
|
|
node_hostname=${default_worker_node_prefix}${node_id}
|
|
else
|
|
node_hostname=${!node_hostname}
|
|
fi
|
|
printf " %s:\n" "${node_hostname}"
|
|
printf " ansible_host: %s\n" "${!var}"
|
|
fi
|
|
done
|
|
fi
|
|
} > "${PROJECT_DIR}/provision/ansible/inventory/hosts.yml"
|
|
}
|
|
|
|
success() {
|
|
_log "INFO" "All files have been templated, proceed to the next steps outlined in the README"
|
|
exit 0
|
|
}
|
|
|
|
_log() {
|
|
local type="${1}"
|
|
local msg="${2}"
|
|
printf "[%s] [%s] %s\n" "$(date -u)" "${type}" "${msg}"
|
|
}
|
|
|
|
main "$@"
|