cassandra运行出现了Unable to gossip with any seeds,cqlsh链接不上,提示connection refused处理办法 问题描述 当启动了cassandra之后出现: java.lang.RuntimeException: Unable to gossip with any seeds at org.apache.cassandra.gms.Gossiper.doShadowRound(Gossiper.java:1160) at org.apache.…

一.背景 首先按照Spark的官方文档来运行此实例,具体方法参见这里,当运行命令$ nc -lk 9999开启端口后,再运行命令$ ./bin/run-example streaming.NetworkWordCount localhost 9999,却出现错误"Error connecting to localhost:9999 java.net.ConnectException: Connection refused ",也就是9999端口无法连接. 二.解决办法 (1)首先代码要…

ssh: connect to host localhost port 22: Connection refused 我的情况是ssh server没装,查看方法: ps -e |grep ssh 1 1 如果没有sshd,说明还没有安装ssh server 解决方案: sudo apt-get install openssh-server 1 1 之后运行start-all.sh就成功了 执行jps结果: yufeng@yufeng-pc:~/hadoop/hadoop-1.2.1/bin$…

python代码在linux终端中执行时报错: Unable to init server: Could not connect: Connection refused Unable to init server: 无法连接: Connection refused 解决办法: 在要执行的python文件里加入以下两句代码: 切记:在最开头添加. import matplotlib matplotlib.use('Agg')…

重装系统,打开VS进行程序调试运行的时候 Unable to find manifest signing certificate in the certificate store. 项目的属性->Signing选项->Sign the ClickOnce manifests 勾去掉…

昨天刚装的Genymotion,昨晚还用得好好的. 今晚开机,重新打开Genymotion,却提示:"Unable to connect to the Genymotion server. Please check your Internet connection.". 看提示,我以为是网络问题,分别挂上香港VPN和美国VPN,均提示这个错误. 很纳闷,百思不得其解. 于是度娘,谷歌,也不见其解决方案. 之后,用Everything搜索关键词"Genymotion"…

启动cqlsh时,保存如下: Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")}) 在启动时,指定连接的IP和端口 ./cqlsh xxx.xxx.xxx.xxx 9042 输出结果如下: Connected to Test…

Linux下面telnet ip 端口号 报错误"Unable to connect to remote host:Connection refused"的时候,大部分是目标机的端口对应的服务宕掉了. 先用netstat -napt命令,看系统有没有在监听你telnet的端口号,若没有对应的端口号,而该机器提供该端口的服务,直接重启下端口对应的服务,启动成功后在用netstat -napt查看端口,一般即可显示出来,最后telnet端口应该就是通的了. stats 查看memcache…

NFS报错一例 [root@bjs0- ~]# /etc/init.d/portreserve start Starting portreserve:                                      [  OK  ] [root@bjs0- ~]# /etc/init.d/nfs start Starting NFS services:                                     [  OK  ] Starting NFS quotas: C…

eclipse运行hadoop程序报错:Connection refused: no further information log4j:WARN No appenders could be found for logger (org.apache.hadoop.conf.Configuration.deprecation). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging…