Zowe Suite v2.7.0

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to the Zlux App Server package will be documented in this file.
 
+## v2.7.0
+
+- Bugfix: Explicitly prefer ipv4 dns results to be compatible with node 18 since it switched to prefer ipv6 without configuration. This behavior can be cusomized via components.app-server.dns.lookupOrder='ipv4' or 'ipv6'. It defaults to 'ipv4'.
+
 ## v2.4.0
 
 - Bugfix: Plugin register/deregister would not consider app2app actions and recgonizers. Now, they are added on registration and removed on deregistration.

bin/app-server.sh

@@ -91,10 +91,34 @@ else
   ZLUX_SERVER_FILE=zluxServer.js
 fi
 
+# Tells node whether to prefer ipv4 or ipv6 results to DNS lookups
+ZLUX_DNS_ORDER="--dns-result-order=ipv4first"
+if [ "$ZWE_components_app_server_dns_lookupOrder" = "ipv6" ]; then
+  ZLUX_DNS_ORDER="--dns-result-order=verbatim"
+fi
+
+# not all versions of node support the above (14.18+ generally) so we can just try it to see what happens.
+v4_check=$(${NODE_BIN} ${ZLUX_DNS_ORDER} -e "console.log('success');")
+if [ "${v4_check}" != "success" ]; then
+  ZLUX_DNS_ORDER=
+fi
+
 if [ -z "$ZLUX_NO_LOGFILE" ]; then
-    __UNTAGGED_READ_MODE=V6 _BPX_JOBNAME=${ZOWE_PREFIX}DS ${NODE_BIN} --harmony ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} --config="${CONFIG_FILE}" "$@" 2>&1 | tee $ZWED_NODE_LOG_FILE
+    __UNTAGGED_READ_MODE=V6 \
+    _BPX_JOBNAME=${ZOWE_PREFIX}DS \
+    ${NODE_BIN} \
+    --harmony \
+    ${ZLUX_DNS_ORDER} \
+    ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} \
+    --config="${CONFIG_FILE}" "$@" 2>&1 | tee $ZWED_NODE_LOG_FILE
 else
-    __UNTAGGED_READ_MODE=V6 _BPX_JOBNAME=${ZOWE_PREFIX}DS ${NODE_BIN} --harmony ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} --config="${CONFIG_FILE}" "$@"
+    __UNTAGGED_READ_MODE=V6 \
+    _BPX_JOBNAME=${ZOWE_PREFIX}DS \
+    ${NODE_BIN} \
+    --harmony \
+    ${ZLUX_DNS_ORDER} \
+    ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} \
+    --config="${CONFIG_FILE}" "$@"
     echo "Ended with rc=$?"
 fi
 

schemas/app-server-config.json

@@ -556,6 +556,18 @@
     "privilegedServerName": {
       "type": "string",
       "description": "The nickname of the ZIS server to be used"
+    },
+    "dns": {
+      "type": "object",
+      "description": "Parameters used to customize DNS query behavior",
+      "properties": {
+        "lookupOrder": {
+          "type": "string",
+          "enum": [ "ipv4", "ipv6" ],
+          "default": "ipv4",
+          "description": "Used to specify to nodejs whether DNS lookups should return ipv4 or ipv6 IPs"
+        }
+      }
     }
   },
   "$defs": {