Cannot negotiate, proposals do not match

ot finished, connection is closed.
2021-06-18 13:49:18.671 [AsyncExecuteUtils-Thread-CustomThreadPoolExecutor-2] ERROR cn.secsmart.admin.util.HAShellScriptUtil - HA Config step4 mysql mm slave server error:
java.lang.Exception: 远程连接服务器失败
   at cn.secsmart.admin.util.RemoteExecuteCommand.login(RemoteExecuteCommand.java:51) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.util.RemoteExecuteCommand.execute(RemoteExecuteCommand.java:70) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.util.HAShellScriptUtil.doHAConfig(HAShellScriptUtil.java:115) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.controller.HaServerConfigController.lambda$save$2(HaServerConfigController.java:84) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.util.AsyncUtils.lambda$execute$0(AsyncUtils.java:24) ~[classes!/:1.0-SNAPSHOT]
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_261]
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_261]
   at java.lang.Thread.run(Thread.java:748) [?:1.8.0_261]
Caused by: java.io.IOException: Key exchange was not finished, connection is closed.
   at ch.ethz.ssh2.transport.KexManager.getOrWaitForConnectionInfo(KexManager.java:75) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.transport.TransportManager.getConnectionInfo(TransportManager.java:169) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.Connection.connect(Connection.java:759) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.Connection.connect(Connection.java:628) ~[ganymed-ssh2-262.jar!/:262]
   at cn.secsmart.admin.util.RemoteExecuteCommand.login(RemoteExecuteCommand.java:46) ~[classes!/:1.0-SNAPSHOT]
   ... 7 more
Caused by: java.io.IOException: Cannot negotiate, proposals do not match.
   at ch.ethz.ssh2.transport.ClientKexManager.handleMessage(ClientKexManager.java:123) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.transport.TransportManager.receiveLoop(TransportManager.java:572) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.transport.TransportManager$1.run(TransportManager.java:261) ~[ganymed-ssh2-262.jar!/:262]
   ... 1 more
2021-06-18 13:49:18.673 [AsyncExecuteUtils-Thread-CustomThreadPoolExecutor-2] INFO cn.secsmart.admin.util.HAShellScriptUtil - HA Config step5 mysql mm master server cmd:sudo /home/ddm/work_ddm/admin/script/mysql_mm_conf.sh 172.16.11.222 4
2021-06-18 13:49:18.683 [AsyncExecuteUtils-Thread-CustomThreadPoolExecutor-2] ERROR cn.secsmart.admin.util.RemoteExecuteCommand - HA Config error:Key exchange was not finished, connection is closed.
2021-06-18 13:49:18.683 [AsyncExecuteUtils-Thread-CustomThreadPoolExecutor-2] ERROR cn.secsmart.admin.util.HAShellScriptUtil - HA Config step5 mysql mm master server error:
java.lang.Exception: 远程连接服务器失败
   at cn.secsmart.admin.util.RemoteExecuteCommand.login(RemoteExecuteCommand.java:51) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.util.RemoteExecuteCommand.execute(RemoteExecuteCommand.java:70) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.util.HAShellScriptUtil.doHAConfig(HAShellScriptUtil.java:124) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.controller.HaServerConfigController.lambda$save$2(HaServerConfigController.java:84) ~[classes!/:1.0-SNAPSHOT]
   at cn.secsmart.admin.util.AsyncUtils.lambda$execute$0(AsyncUtils.java:24) ~[classes!/:1.0-SNAPSHOT]
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_261]
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_261]
   at java.lang.Thread.run(Thread.java:748) [?:1.8.0_261]
Caused by: java.io.IOException: Key exchange was not finished, connection is closed.
   at ch.ethz.ssh2.transport.KexManager.getOrWaitForConnectionInfo(KexManager.java:75) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.transport.TransportManager.getConnectionInfo(TransportManager.java:169) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.Connection.connect(Connection.java:759) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.Connection.connect(Connection.java:628) ~[ganymed-ssh2-262.jar!/:262]
   at cn.secsmart.admin.util.RemoteExecuteCommand.login(RemoteExecuteCommand.java:46) ~[classes!/:1.0-SNAPSHOT]
   ... 7 more
Caused by: java.io.IOException: Cannot negotiate, proposals do not match.
   at ch.ethz.ssh2.transport.ClientKexManager.handleMessage(ClientKexManager.java:123) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.transport.TransportManager.receiveLoop(TransportManager.java:572) ~[ganymed-ssh2-262.jar!/:262]
   at ch.ethz.ssh2.transport.TransportManager$1.run(TransportManager.java:261) ~[ganymed-ssh2-262.jar!/:262]
   ... 1 more

解决方法：cd 到 /etc/ssh目录在sshd_config 文件加入

KexAlgorithms diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group1-sha1,curve25519-sha256@libssh.org

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