varie

2026-09-20 19:26:05 +02:00
parent 48f3f1ff22
commit 63649a642a
11 changed files with 578 additions and 45 deletions
@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Aggiunge un hostname a spec.template.spec.hostAliases del Deployment blackbox.
+#
+# Uso:
+#   ./add-hostalias.sh <hostname> <deployment_name> <deployment_namespace>
+#
+# Esempio:
+#   ./add-hostalias.sh idcidcp.pigreco66.it cert-manager cert-manager
+#  
+
+DEPLOYMENT_NAME="${2:-}"
+DEPLOYMENT_NS="${3:-}"
+TARGET_IP="10.43.37.118"
+HOSTNAME_VAL="${1:-}"
+
+if [[ -z "$HOSTNAME_VAL" ]]; then
+  echo "Uso: $0 <hostname>" >&2
+  exit 1
+fi
+
+if ! command -v kubectl >/dev/null 2>&1; then
+  echo "Errore: kubectl non trovato nel PATH" >&2
+  exit 1
+fi
+
+if ! command -v jq >/dev/null 2>&1; then
+  echo "Errore: jq non trovato nel PATH" >&2
+  echo "Installa jq e riprova." >&2
+  exit 1
+fi
+
+# Idempotenza: controlla solo il blocco hostAliases associato a TARGET_IP.
+EXISTING_HOSTNAMES="$(kubectl get deployment "$DEPLOYMENT_NAME" -n "$DEPLOYMENT_NS" -o jsonpath="{.spec.template.spec.hostAliases[?(@.ip=='${TARGET_IP}')].hostnames[*]}" 2>/dev/null || true)"
+if echo " $EXISTING_HOSTNAMES " | grep -Fq " $HOSTNAME_VAL "; then
+  echo "Hostname '$HOSTNAME_VAL' gia presente per IP ${TARGET_IP} in ${DEPLOYMENT_NS}/${DEPLOYMENT_NAME}. Nessuna modifica."
+  exit 0
+fi
+
+DEPLOY_JSON="$(kubectl get deployment "$DEPLOYMENT_NAME" -n "$DEPLOYMENT_NS" -o json)"
+
+UPDATED_HOST_ALIASES="$({
+  echo "$DEPLOY_JSON" | jq -c --arg ip "$TARGET_IP" --arg hostname "$HOSTNAME_VAL" '
+    (.spec.template.spec.hostAliases //= [])
+    | if any(.spec.template.spec.hostAliases[]?; .ip == $ip) then
+        .spec.template.spec.hostAliases |= map(
+          if .ip == $ip then
+            if ((.hostnames // []) | index($hostname)) then
+              .
+            else
+              .hostnames = ((.hostnames // []) + [$hostname])
+            end
+          else
+            .
+          end
+        )
+      else
+        .spec.template.spec.hostAliases += [{"ip": $ip, "hostnames": [$hostname]}]
+      end
+    | .spec.template.spec.hostAliases
+  '
+} )"
+
+PATCH_PAYLOAD="$(jq -cn --argjson hostAliases "$UPDATED_HOST_ALIASES" '{spec:{template:{spec:{hostAliases:$hostAliases}}}}')"
+
+kubectl patch deployment "$DEPLOYMENT_NAME" \
+  -n "$DEPLOYMENT_NS" \
+  --type=merge \
+  -p "$PATCH_PAYLOAD" >/dev/null
+
+echo "Hostname aggiunto con successo."
+echo "  Deployment: ${DEPLOYMENT_NS}/${DEPLOYMENT_NAME}"
+echo "  IP       : ${TARGET_IP}"
+echo "  Hostname : ${HOSTNAME_VAL}"