diff --git a/ingress.tjo.cloud/root/usr/local/bin/dyndns b/ingress.tjo.cloud/root/usr/local/bin/dyndns index 138d715..9cf1fb2 100755 --- a/ingress.tjo.cloud/root/usr/local/bin/dyndns +++ b/ingress.tjo.cloud/root/usr/local/bin/dyndns @@ -5,6 +5,7 @@ set -euo pipefail api_host="https://api.dnsimple.com/v2" sleep_interval=${SLEEP_INTERVAL:-300} record_ttl=${RECORD_TTL:-600} +destructive=${DESTRUCTIVE:-false} # Only services with ipv6 supported are listed here. # And are not using cloudflare or similar services @@ -64,6 +65,11 @@ dnsimple_update_record() { dnsimeple_delete_record() { local record="$1" + if [[ "$destructive" == "false" ]]; then + warn "record=$record Record deletion is disabled. Set DESTRUCTIVE=true to enable." + return + fi + curl -s -X DELETE \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $DNSIMPLE_TOKEN" \ @@ -84,12 +90,13 @@ configure_single() { record_data=$(echo "$domain_records" | jq -r ".data[] | select(.type == \"$type\" and .name == \"$domain\") | .content") if [ "$(echo "$record_id" | wc -l)" -ge 2 ]; then - warn "domain=$domain type=$type Domain name has duplicate DNS records, removing duplicates" + warn "domain=$domain type=$type Domain name has duplicate DNS records, removing duplicates." record_id_to_delete=$(echo "$record_id" | tail -n +2) record_id=$(echo "$record_id" | head -1) record_data=$(echo "$record_data" | head -1) while IFS= read -r line; do + warn "domain=$domain type=$type record=$line Deleting record" dnsimeple_delete_record "$line" done <<<"$record_id_to_delete" fi @@ -101,13 +108,9 @@ configure_single() { if [[ -z $record_id ]]; then info "domain=$domain type=$type No record found. Creating record." - - record_data=$(dnsimple_create_record "$data" | jq -r ".data") - fi - - if [[ "$ip" != "$record_data" ]]; then + dnsimple_create_record "$data" + elif [[ "$ip" != "$record_data" ]]; then info "domain=$domain type=$type Existing DNS record address ($record_data) doesn't match current IP ($ip)" - dnsimple_update_record "$record_id" "$data" else info "domain=$domain type=$type Existing DNS record address ($record_data) did not need updating" @@ -130,12 +133,10 @@ configure_many() { set +f data="{\"type\": \"$type\", \"name\": \"$domain\", \"content\": \"$ip\", \"ttl\": $record_ttl}" - url="$base_zone_url/$record_id" if [[ -z $record_id ]]; then info "domain=$domain type=$type No record found. Creating record." - - record_data=$(dnsimple_create_record "$data" | jq -r ".data") + dnsimple_create_record "$data" else info "domain=$domain type=$type Existing DNS record address ($record_data) did not need updating." fi @@ -147,11 +148,11 @@ healthcheck() { code=$(curl -s -o /dev/null -I -w '%{http_code}' "http://$ip:1337/healthz" || echo "") if [[ "$code" != "200" ]]; then - warn "Healthcheck failed for $ip. Got $code" + warn "ip=$ip code=$code Healthcheck failed." return 1 fi - info "Healthcheck passed for $ip" + info "ip=$ip code=$code Healthcheck passed." return 0 } @@ -159,7 +160,7 @@ while (true); do domain_records=$(dnsimple_list_record) for service in "${services[@]}"; do - info "Discovering public IP with $service..." + info "service=$service Discovering public IP address..." ipv4="$(curl -4 -s -f --connect-timeout 2 "$service" || echo "")" ipv6="$(curl -6 -s -f --connect-timeout 2 "$service" || echo "")" @@ -167,12 +168,12 @@ while (true); do if [[ -n "$ipv4$ipv6" ]]; then break else - warn "Failed to retrieve IP from $service" + warn "service=$service Failed to retrieve IP address." fi done if [[ -z $ipv4 ]]; then - warn "IPv4 wasn't retrieved within allowed interval. Will try $sleep_interval seconds later.." + warn "IPv4 address wasn't found." else info "Found IPv4 address $ipv4" if healthcheck "$ipv4"; then @@ -182,7 +183,7 @@ while (true); do fi if [[ -z $ipv6 ]]; then - warn "IPv6 wasn't retrieved within allowed interval. Will try $sleep_interval seconds later.." + warn "IPv6 address wasn't found." else info "Found IPv6 address $ipv6" if healthcheck "[$ipv6]"; then @@ -191,8 +192,32 @@ while (true); do fi fi - # TODO: Check other domain_records, - # and remove any records that are not healthy. + info "type=A Checking for stale records..." + for domain in $(echo "$domain_records" | jq -r ".data[] | select(.type == "A" and .name != "$CLOUD_REGION") | .name"); do + info "type=A domain=$domain Checking..." + record_id=$(echo "$domain_records" | jq -r ".data[] | select(.name == \"$domain\") | .id") + record_ip=$(echo "$domain_records" | jq -r ".data[] | select(.name == \"$domain\") | .content") + if ! healthcheck "$record_ip"; then + warn "type=A domain=$domain Unhealthy..." + dnsimeple_delete_record "$record_id" + else + info "type=A domain=$domain Healthy..." + fi + done + info "type=AAAA Checking for stale records..." + for domain in $(echo "$domain_records" | jq -r ".data[] | select(.type == "AAAA" and .name != "$CLOUD_REGION") | .name"); do + info "type=AAAA domain=$domain Checking..." + record_id=$(echo "$domain_records" | jq -r ".data[] | select(.name == \"$domain\") | .id") + record_ip=$(echo "$domain_records" | jq -r ".data[] | select(.name == \"$domain\") | .content") + if ! healthcheck "$record_ip"; then + warn "type=AAAA domain=$domain Unhealthy." + dnsimeple_delete_record "[$record_id]" + else + info "type=AAAA domain=$domain Healthy." + fi + done + + info "Sleeping for $sleep_interval seconds..." sleep "$sleep_interval" done