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An unexpected error occured when contacting the server .

I logged into to the arcsight command center ,however I found an unexpected error occurred when contacting the server .Please help me to analysis the error .please tell me what to deal with , I understand the error ,but I hope you give me some advice…

The underlying connection was closed: An unexpected error occurred on a send

操作系统是Windows Server 2003 x64 SP2,使用Framework 4.0,在使用WebClient访问某些特定的HTTPS站点时,会引发异常: Unhandled Exception: System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Authentication…

WARN Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn)

[2017-05-19 13:32:14,933] INFO Waiting for keeper state SyncConnected (org.I0Itec.zkclient.ZkClient)[2017-05-19 13:32:15,028] INFO Opening socket connection to server hadoop02/192.168.233.201:2181. Will not attempt to authenticate using SASL (unknown…

centos 7 运行Quartus ii 17.0 标准版，下载程序时遇到错误error (209053): unexpected error in jtag server -- error code 89

对于错误error (209053): unexpected error in jtag server -- error code 89,它产生的原因在于,在linux系统下,Quartus ii的驱动USB-Blaster只能有root用户使用,而普通用户是无权使用的.解决思路是更改USB-Blaster的使用权限,使得普通用户也能使用.对此altera也有给出相应的解决方案,详细见USB-Blaster Driver for Linux. 为使大家更易在linux下操作,现将具体的步骤介绍如…

WARN Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn) java.net.ConnectException: Connection refused

1.启动kafka的脚本程序报如下所示的错误: [hadoop@slaver1 script_hadoop]$ kafka-start.sh start kafkaServer... [-- ::,] INFO Verifying properties (kafka.utils.VerifiableProperties) [-- ::,] INFO Property broker.id (kafka.utils.VerifiableProperties) [-- ::,] INFO Proper…

hadoop mapreduce 写入hbase报错 Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect

现象:map任务构造数据正常,reduce任务,开始也正常,速度很快 ,在hbase 的管理界面,可以看到,5W以上的请求数 当reduce 执行到 70% 左右的时候,就堵住了,查看yarn的web界面,可以找到如下报错信息. 不会尝试使用SASL认证. 连接被拒绝. 错误原因,找不到zookeeper 的master. 最开始的时候,配置是这样注入的: conf.set("hbase.zookeeper.quorum","hostname01,hostname02,hos…

Linux下启动tomcat报错，WARN org.apache.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect java.net.ConnectException:

tomcat启动完了之后,一直不停的打印这种错误信息,看表面上,应该是zk节点下的数据是空的,连接不上服务,所以一直在尝试连接,然后一直又连不上: 完整的错误信息: 407662 [usf-ZooKeeper:dsf_default-Registry-SendThread(127.0.0.1:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server 127.0.0.1/127.0.0.1:2…

将本地开发完的SDK代码上传到SVN上面：an error occurred while contacting the repository The server may be unreachable or the URL may be incorrect

将本地开发完的SDK代码上传到SVN上面:an error occurred while contacting the repository  The server may be unreachable or the URL may be incorrect 突然间意识到,我的代码是在本地搭建了一个git仓库用来管理的,里面还有.git的隐藏文件. 解决:在终端中按照下面的命令,进行显示和隐藏 隐藏文件 # 显示隐藏文件 defaults write com.apple.finder Apple…

com.rabbitmq.client.impl.ForgivingExceptionHandler.log:119 -An unexpected connection driver error occured

在服务器上安装了一个RabbitMq,并新创建了一个用户授予了管理员角色,登录控制台查看一切正常,兴高采烈启动项目进行连接,结果一盆冷水下来,报如下错误: o.s.a.r.l.SimpleMessageListenerContainer : Failed to check/redeclare auto-delete queue(s). org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connect…

rabbitmq 连接报错 An unexpected connection driver error occured

转自:https://blog.csdn.net/zht741322694/article/details/82801873 在服务器上安装了一个RabbitMq,并新创建了一个用户授予了管理员角色,登录控制台查看一切正常,兴高采烈启动项目进行连接,结果一盆冷水下来,报如下错误: o.s.a.r.l.SimpleMessageListenerContainer : Failed to check/redeclare auto-delete queue(s). org.springframewor…