Certificate Cloudera代理安装失败，错误为；无法为<；生成证书；主机>&引用；

添加主机时，cloudera代理安装失败，出现以下错误

/tmp/scm\u prepare\u node.EbLWUx2R 无法为ubuntu生成证书

其中ubuntu是我的主机名，ip是127.0.1.1

cloudera-scm-server.log中的错误为

2019-04-24 22:50:29,977 INFO scm-web-123:com.cloudera.enterprise.JavaMelodyFacade: Entering HTTP Operation: Method:POST, Path:/add-hosts-wizard/install
2019-04-24 22:50:29,990 INFO scm-web-123:com.cloudera.server.cmf.node.NodeConfiguratorService: Creating request with id 4
2019-04-24 22:50:29,990 INFO scm-web-123:com.cloudera.cmf.service.ServiceHandlerRegistry: Executing command GlobalHostInstall GlobalHostInstallCommandArgs{sshPort=22, userName=hadoop, password=REDACTED, passphrase=REDACTED, privateKey=REDACTED, parallelInstallCount=10, cmRepoUrl=null, gpgKeyCustomUrl=null, gpgKeyOverrideBundle=<none>, unlimitedJCE=false, javaInstallStrategy=AUTO, agentUserMode=ROOT, cdhVersion=-1, cdhRelease=NONE, cdhRepoUrl=null, buildCertCommand=/var/lib/cloudera-scm-server/certmanager/generate_host_cert, sslCertHostname=ubuntu, reqId=4, skipPackageInstall=false, skipCloudConfig=false, proxyProtocol=HTTP, proxyServer=null, proxyPort=0, proxyUserName=null, proxyPassword=REDACTED, hosts=[ubuntu], existingHosts=[]}.
2019-04-24 22:50:29,995 INFO scm-web-123:com.cloudera.cmf.command.flow.CmdStep: Executing command work: Execute 1 steps in sequence
2019-04-24 22:50:29,996 INFO scm-web-123:com.cloudera.cmf.command.flow.CmdStep: Executing command work: Install on 1 hosts.
2019-04-24 22:50:29,996 INFO scm-web-123:com.cloudera.cmf.command.flow.CmdStep: Executing command work: Install on ubuntu.
2019-04-24 22:50:29,996 INFO scm-web-123:com.cloudera.server.cmf.node.NodeConfiguratorService: Adding password-based configurator for ubuntu
2019-04-24 22:50:29,998 INFO scm-web-123:com.cloudera.server.cmf.node.NodeConfiguratorService: Submitted configurator for ubuntu with id 5
2019-04-24 22:50:30,011 INFO scm-web-123:com.cloudera.enterprise.JavaMelodyFacade: Exiting HTTP Operation: Method:POST, Path:/add-hosts-wizard/install, Status:200
2019-04-24 22:50:30,017 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: ubuntu: Transitioning from INIT (PT0.021S) to CONNECT
2019-04-24 22:50:30,017 INFO NodeConfiguratorThread-4-0:net.schmizz.sshj.transport.TransportImpl: Client identity string: SSH-2.0-SSHJ_0_14_0
2019-04-24 22:50:30,028 INFO NodeConfiguratorThread-4-0:net.schmizz.sshj.transport.TransportImpl: Server identity string: SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.8
2019-04-24 22:50:30,048 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: ubuntu: Transitioning from CONNECT (PT0.031S) to AUTHENTICATE
2019-04-24 22:50:30,091 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: ubuntu: Transitioning from AUTHENTICATE (PT0.043S) to MAKE_TEMP_DIR
2019-04-24 22:50:30,505 INFO scm-web-113:com.cloudera.enterprise.JavaMelodyFacade: Entering HTTP Operation: Method:POST, Path:/express-wizard/updateHostsState
2019-04-24 22:50:30,508 INFO scm-web-113:com.cloudera.enterprise.JavaMelodyFacade: Exiting HTTP Operation: Method:POST, Path:/express-wizard/updateHostsState, Status:200
2019-04-24 22:50:31,538 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfigurator: Executing mktemp -d /tmp/scm_prepare_node.XXXXXXXX on ubuntu
2019-04-24 22:50:31,545 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: ubuntu: Transitioning from MAKE_TEMP_DIR (PT1.454S) to COPY_FILES
2019-04-24 22:50:31,760 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfigurator: Using key bundle from URL: https://archive.cloudera.com/cm6/6.2.0/allkeys.asc
2019-04-24 22:50:33,718 ERROR NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfigurator: Failed to generate certificates for ubuntu: null
2019-04-24 22:50:33,719 INFO NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: ubuntu: Setting COPY_FILES as failed and done state
2019-04-24 22:50:33,719 INFO NodeConfiguratorThread-4-0:net.schmizz.sshj.transport.TransportImpl: Disconnected - BY_APPLICATION
2019-04-24 22:50:35,052 ERROR CommandPusher:com.cloudera.cmf.command.flow.WorkOutputs: CMD id: 18 Failed to complete installation on host ubuntu.
2019-04-24 22:50:35,053 ERROR CommandPusher:com.cloudera.cmf.model.DbCommand: Command 18(GlobalHostInstall) has completed. finalstate:FINISHED, success:false, msg:Failed to complete installation.
2019-04-24 22:50:35,446 ERROR ScmActive-0:com.cloudera.server.cmf.components.ScmActive: ScmActive: Unable to retrieve non-local non-loopback IP address. Seeing address: ubuntu/127.0.1.1. 
2019-04-24 22:50:35,446 ERROR ScmActive-0:com.cloudera.server.cmf.components.ScmActive: ScmActive failed. Bootup = false
2019-04-24 22:50:35,446 ERROR ScmActive-0:com.cloudera.server.cmf.components.ScmActive: ScmActive was not able to access CM identity to validate it.
2019-04-24 22:50:35,446 ERROR ScmActive-0:com.cloudera.server.cmf.components.ScmActive: ScmActive is deferring the validation to the next run in 15 seconds.
2019-04-24 22:50:35,446 INFO ScmActive-0:com.cloudera.enterprise.AbstractWrappedEntityManager: Rolling back transaction that wasn't marked for rollback-only.
java.lang.Exception: Non-thrown exception for stack trace.
    at com.cloudera.enterprise.AbstractWrappedEntityManager.close(AbstractWrappedEntityManager.java:161)
    at com.cloudera.cmf.persist.CmfEntityManager.close(CmfEntityManager.java:367)
    at com.cloudera.server.cmf.components.ScmActive.markScmActive(ScmActive.java:224)
    at com.cloudera.server.cmf.components.ScmActive.run(ScmActive.java:87)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

2019-04-24 22:50:29977信息scm-web-123:com.cloudera.enterprise.JavaMelodyFacade:进入HTTP操作：方法：POST，路径：/add hosts wizard/安装
2019-04-24 22:50:29990信息scm-web-123:com.cloudera.server.cmf.node.NodeConfiguratorService:正在创建id为4的请求
2019-04-24 22:50:29990信息scm-web-123:com.cloudera.cmf.service.ServiceHandlerRegistry:正在执行命令GlobalHostInstall GlobalHostInstallCommandArgs{sshPort=22，userName=hadoop，password=REDACTED，passphrase=REDACTED，privateKey=REDACTED，parallellinstallcount=10，cmRepoUrl=null，gpgkeycustourl=null，gpgkeysoverridebundle=，unlimitedjse=false，javaInstallStrategy=AUTO，agentUserMode=ROOT，cdhVersion=-1，cdhRelease=NONE，cdhRepoUrl=null，buildCertCommand=/var/lib/cloudera-scm-server/certmanager/生成证书，sslCertHostname=ubuntu，reqId=4，skipPackageInstall=false，skipCloudConfig=false，proxyProtocol=HTTP，proxyServer=null，proxyPort=0，proxyuname=null，proxyPassword=redact，hosts=[ubuntu]，existingHosts=[]}。
2019-04-24 22:50:29995信息scm-web-123:com.cloudera.cmf.command.flow.CmdStep:执行命令工作：按顺序执行1个步骤
2019-04-24 22:50:29996信息scm-web-123:com.cloudera.cmf.command.flow.CmdStep:执行命令工作：在1台主机上安装。
2019-04-24 22:50:29996信息scm-web-123:com.cloudera.cmf.command.flow.CmdStep:执行命令工作：在ubuntu上安装。
2019-04-24 22:50:29996信息scm-web-123:com.cloudera.server.cmf.node.NodeConfiguratorService:为ubuntu添加基于密码的配置程序
2019-04-24 22:50:29998信息scm-web-123:com.cloudera.server.cmf.node.NodeConfiguratorService:已提交的ubuntu配置程序，id为5
2019-04-24 22:50:30011信息scm-web-123:com.cloudera.enterprise.JavaMelodyFacade:退出HTTP操作：方法：POST，路径：/add hosts wizard/安装，状态：200
2019-04-24 22:50:30017信息节点配置读取-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress:ubuntu:从INIT（PT0.021S）转换到CONNECT
2019-04-24 22:50:30017信息节点配置读取-4-0:net.schmizz.sshj.transport.TransportImpl:客户端标识字符串：SSH-2.0-sshj\u 0\u 14\u 0
2019-04-24 22:50:30028信息节点配置读取-4-0:net.schmizz.sshj.transport.TransportImpl:服务器标识字符串：SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.8
2019-04-24 22:50:30048信息节点配置读取-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress:ubuntu:从连接（PT0.031S）转换到身份验证
2019-04-24 22:50:30091信息节点配置读取-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress:ubuntu:从身份验证（PT0.043S）转换为生成临时目录
2019-04-24 22:50:30505信息scm-web-113:com.cloudera.enterprise.JavaMelodyFacade:输入HTTP操作：方法：POST，路径：/express向导/UpdateHostState
2019-04-24 22:50:30508信息scm-web-113:com.cloudera.enterprise.JavaMelodyFacade:退出HTTP操作：方法：POST，路径：/express向导/UpdateHostState，状态：200
2019-04-24 22:50:31538信息节点配置读取-4-0:com.cloudera.server.cmf.node.NodeConfigurator:在ubuntu上执行mktemp-d/tmp/scm\u prepare\u node.XXXXXXXX
2019-04-24 22:50:31545信息节点配置读取-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress:ubuntu:从MAKE_TEMP_DIR（PT1.454S）转换为复制_文件
2019-04-24 22:50:31760信息节点配置程序读取-4-0:com.cloudera.server.cmf.node.NodeConfigurator:使用URL中的密钥包：https://archive.cloudera.com/cm6/6.2.0/allkeys.asc
2019-04-24 22:50:33718错误NodeConfiguratorThread-4-0:com.cloudera.server.cmf.node.NodeConfigurator:无法为ubuntu生成证书：null
2019-04-24 22:50:33719信息节点配置读取-4-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress:ubuntu:将复制_文件设置为失败和完成状态
2019-04-24 22:50:33719信息节点配置读取-4-0:net.schmizz.sshj.transport.TransportImpl:已断开连接-由应用程序
2019-04-24 22:50:35052错误CommandPusher:com.cloudera.cmf.command.flow.workoutput:CMD id:18未能在主机ubuntu上完成安装。
2019-04-24 22:50:35053错误CommandPusher:com.cloudera.cmf.model.DbCommand:Command 18（GlobalHostInstall）已完成。最终状态：已完成，成功：false，消息：未能完成安装。
2019-04-24 22:50:35446错误ScmActive-0:com.cloudera.server.cmf.components.ScmActive:ScmActive:无法检索非本地非环回IP地址。正在查看地址：ubuntu/127.0.1.1。
2019-04-24 22:50:35446错误ScmActive-0:com.cloudera.server.cmf.components.ScmActive:ScmActive失败。启动=false
2019-04-24 22:50:35446错误ScmActive-0:com.cloudera.server.cmf.components.ScmActive:ScmActive无法访问CM标识进行验证。
2019-04-24 22:50:35446错误ScmActive-0:com.cloudera.server.cmf.components.ScmActive:ScmActive正在将验证推迟到15秒后的下一次运行。
2019-04-24 22:50:35446信息ScmActive-0:com.cloudera.enterprise.AbstractWrappedEntityManager:仅回滚未标记为回滚的事务。
java.lang.Exception：堆栈跟踪的非抛出异常。
位于com.cloudera.enterprise.AbstractWrappedEntityManager.close（AbstractWrappedEntityManager.java:161）
位于com.cloudera.cmf.persist.CmfEntityManager.close（CmfEntityManager.java:367）
位于com.cloudera.server.cmf.components.ScmActive.markScmActive（ScmActive.java:224）
位于com.cloudera.server.cmf.components.ScmActive.run（ScmActive.java:87）
位于java.util.concurrent.Executors$RunnableAdapter.call（Executors.java:511）
在java.util.concurrent.FutureTask.runAndReset（Fut