12c emcc Algorithm negotiation fail

APPLIES TO:

Enterprise Manager Base Platform - Version 12.1.0.2.0 and later
Information in this document applies to any platform.
SYMPTOMS

Agent deployment from Enterprise Manger (EM) 12.1.0.2 Cloud Control fails with this logged error(<OMS instance base>/em/EMGC_OMS1/sysman/agentpush//2018-02-09_10-39-25-AM/applogs/test.host.com_deploy.log):

Copying file /products/oracle/product/Middleware/oms/sysman/agent/12.1.0.2.0_AgentCore_212.zip on the OMS to /products/oracle/agent12c/ADATMP_2018-02-09_10-39-25-AM on host test.host.com Failed

Cause
Error Message:PROV-16011: Algorithm negotiation fail
Exit Code :0
CAUSE

The target host ssh configuration is not configured with the required encryption algorithm for exchange.

SOLUTION

Before deploying the EM Agent to the target host, add following lines in the /etc/ssh/sshd_config file on the target host (as root):

Ciphers aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,arcfour
KexAlgorithms diffie-hellman-group1-sha1

重启sshd服务
需要到机房控制台执行命令：
lssrc -s sshd
stopsrc -s sshd
startsrc -s sshd
如果是linux系统可以使用
service sshd restart

12c emcc Algorithm negotiation fail

原文：http://blog.51cto.com/roidba/2086079