| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| = Running Client Nodes Behind NAT |
| |
| If your client nodes are deployed behind a NAT, the server nodes won't be able to establish connection with the clients because of the limitations of the communication protocol. |
| This includes deployment cases when client nodes are running in virtual environments (like Kubernetes) and the server nodes are deployed elsewhere. |
| |
| For cases like this, you need to enable a special mode of communication: |
| |
| [tabs] |
| -- |
| tab:XML[] |
| |
| [source, xml] |
| ---- |
| include::code-snippets/xml/client-behind-nat.xml[tags=ignite-config;!discovery,indent=0] |
| ---- |
| tab:Java[] |
| [source, java] |
| ---- |
| include::{javaCodeDir}/Discovery.java[tags=client-behind-nat,indent=0] |
| ---- |
| tab:C#/.NET[] |
| |
| tab:C++[unsupported] |
| -- |
| |
| == Limitations |
| |
| * This mode cannot be used when `TcpCommunicationSpi.usePairedConnections = true` on both server and client nodes. |
| |
| * Peer class loading for link:key-value-api/continuous-queries[continuous queries (transformers and filters)] does not work when a continuous query is started from a client node `forceClientToServerConnections = true`. |
| You will need to add the corresponding classes to the classpath of every server node. |
| |
| * This property can only be used on client nodes. This limitation will be addressed in the future releases. |
