问题描述
1.系统环境和形相应软件版本: centos6.5 green-plum的版本是4.3.5.2
2.在安装过程中: 1)已经修改了内核参数:
net.ipv4.ip_forward = 0 net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.accept_source_route = 0 kernel.sysrq = 1 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.msgmni = 2048 kernel.shmmax = 500000000 kernel.shmmni = 4096 kernel.shmall = 4000000000 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_max_syn_backlog = 4096 net.ipv4.ip_local_port_range = 1025 65535 net.core.netdev_max_backlog = 10000 vm.overcommit_memory = 2 net.ipv4.conf.all.arp_filter = 1 net.core.rmem_max = 2097152 net.core.wmem_max = 20971522)修改了软硬连接数: * soft nofile 65536 * hard nofile 65536 * soft nproc 131072 * hard nproc 131072
3)关闭防火墙和selinux. 4)host中已将修好了配置:
192.168.9.173 ljlj-master mt 192.168.9.153 ljlj-slave st
5)安装greenplum过程没有问题,已经将其安装到/usr/local/greenplum中了,
自己尽力一个conf文件放hostfile,里面内容是: mtst
6)/usr/local/greenplum所有者和所有者组都已经设定为gpadmin用户(该用户提前被建立) 7)切换到gpadmin用户,执行 gpssh-exkeys -f /usr/local/greenplum/conf/hostfile
在此处出现报错: [STEP 1 of 5] create local ID and authorize on local host ... /home/gpadmin/.ssh/id_rsa file exists ... key generation skipped
[STEP 2 of 5] keyscan all hosts and update known_hosts file
[STEP 3 of 5] authorize current user on remote hosts ... send to st** Enter password for st: [ERROR st] Host key for server st does not match!** Enter password for st: [ERROR st] Host key for server st does not match!** Enter password for st:
在这里输入的st端root的密码,但是它一直报错Host key for server st does not match!
但是当我ping st是通的 PING ljlj-slave (192.168.9.153) 56(84) bytes of data.64 bytes from ljlj-slave (192.168.9.153): icmp_seq=1 ttl=64 time=1.08 ms64 bytes from ljlj-slave (192.168.9.153): icmp_seq=2 ttl=64 time=0.189 ms64 bytes from ljlj-slave (192.168.9.153): icmp_seq=3 ttl=64 time=0.187 ms64 bytes from ljlj-slave (192.168.9.153): icmp_seq=4 ttl=64 time=0.184 ms64 bytes from ljlj-slave (192.168.9.153): icmp_seq=5 ttl=64 time=0.188 ms64 bytes from ljlj-slave (192.168.9.153): icmp_seq=6 ttl=64 time=0.130 ms64 bytes from ljlj-slave (192.168.9.153): icmp_seq=7 ttl=64 time=0.186 ms^C--- ljlj-slave ping statistics ---7 packets transmitted, 7 received, 0% packet loss, time 6462msrtt min/avg/max/mdev = 0.130/0.307/1.089/0.320 ms
但是当我手动添加:gpssh-exkeys -h 192.168.9.153 [STEP 1 of 5] create local ID and authorize on local host ... /home/gpadmin/.ssh/id_rsa file exists ... key generation skipped
[STEP 2 of 5] keyscan all hosts and update known_hosts file
[STEP 3 of 5] authorize current user on remote hosts ... send to 192.168.9.153** Enter password for 192.168.9.153: [ERROR 192.168.9.153] bad password** Enter password for 192.168.9.153: [ERROR 192.168.9.153] bad password*此处又报密码不对,排除密码输入错误的情况(此处也是输入的root密码)
求大神们,解释一下这是什么原因造成的,求解答!谢谢了,大神们!!!
问题解答
回答1：再看查询百度安装过程中,几乎所有的内容都是说执行gpssh-exkeys -f /usr/local//conf/hostfile 要用gpadmin用户,但是在使用该用户一直报上面的错误,但是当我使用root用户执行的时候就能够执行过去.
在此还要注意以下问题: 1.ssh端口使用22
2.root能够登陆 3.root命令执行gpssh-exkeys -f /usr/local//conf/hostfile
补充一下:可以自行使用密钥交换.使用ssh-copy-id -i id_rsa.pub ip地址 (默认22端口)
