ssh: connect to host master port 22: Connection refused

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hadoop集群启动的时候namenode显示Connection refused

到windows下ping master 显示传输中过期

ip是静态的

ssh master 也是连接拒绝

重启ssh服务

发现这个问题。。。

Sep 27 16:13:15 master sshd[1708]: Server listening on :: port 22.

Sep 27 16:13:15 master systemd[1]: Started OpenSSH server daemon.

Sep 27 16:16:16 master sshd[3697]: Accepted publickey for hadoop from ::1 p...01

Sep 27 16:16:23 master sshd[3903]: Accepted publickey for hadoop from 127.0...01

Sep 27 16:16:31 master sshd[4216]: Accepted publickey for hadoop from ::1 p...01

Sep 27 16:16:55 master sshd[4752]: Accepted publickey for hadoop from ::1 p...01

Sep 27 16:16:56 master sshd[4879]: Accepted publickey for hadoop from 127.0...01

Sep 27 16:17:10 master sshd[5153]: Accepted publickey for hadoop from ::1 p...01

Sep 27 16:17:16 master sshd[5317]: Accepted publickey for hadoop from 127.0...01

Sep 27 16:17:27 master sshd[5551]: Accepted publickey for hadoop from ::1 p...01

Hint: Some lines were ellipsized, use -l to show in full.

重启集群还是这个问题

重装ssh！！

卸载过程：

1.rpm -qa | grep ssh

ksshaskpass-0.5.3-7.el7.x86_64

openssh-clients-6.6.1p1-31.el7.x86_64

libssh2-1.4.3-10.el7_2.1.x86_64

openssh-6.6.1p1-31.el7.x86_64

openssh-server-6.6.1p1-31.el7.x86_64

2.yum -y remove +包名

安装过程：

1.yum install -y openssh-server

由于卸载过猛，缺少安装包，百度了好久，终于查到了

2.执行 yum install -y openssh*

3.如下图