rsh服务配置

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需要下载2个包，到网上google一个吧：

    （1）rsh-0.17-14.i386.rpm

    （2）rsh-server-0.17-14.i386.rpm

    一．安装rsh，和rsh-server两个服务包。



     1.首先要确定系统里有rsh，查看rpm -qa |grep rsh,若无信息则要在rsh登录的服务器上把rsh server 给装上。

    2. 卸载rsh

    rpm –q rsh----------查看版本号

    rpm -e 版本号---------卸载该版本。

    3．安装

    rpm –ivh rsh-0.17-14.i386.rpm rsh-server-0.17-14.i386.rpm

    这两个包在我的目录下有共享。

    配置rsh和rlogin



   二、配置rsh和rlogin服务,使用户能以root身份不需密码验证直接登录本机。

       1.vi /etc/securetty, 在其中添加两行

           rsh   rlogin

       2.vi /etc/pam.d/rsh, 注释掉auth required pam_securetty.so

       3.vi /etc/pam.d/rlogin, 注释掉auth required pam_securetty.so

       4.vi /etc/xinetd.d/rsh, 将disable=yes, 改成no

       5.vi /etc/xinetd.d/rlogin, 将disable=yes, 改成no

       6.在/root下创建一个.rhosts文件，权限设置为600，然后添加下面的内容

           如：   Test03 x.x.x.x（ip地址）

       7.确认下面的服务是否启动，没有的话请先启动下面的服务

       /etc/init.d/rpcbind start       /etc/init.d/nfs start

   11、重启xinetd服务，/etc/init.d/xinetd restart

   12、确认系统能够不用密码以rsh 和rlogin登录

故障现象：
尝试启动数据库失败：
db2inst1@linux-db2v9:~/sqllib> db2start
03/26/2012 22:57:37     0   0   SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing.
03/26/2012 22:58:07     1   0   SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing.
03/26/2012 22:58:37     2   0   SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing.
03/26/2012 22:59:07     3   0   SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing.
SQL1032N No start database manager command was issued. SQLSTATE=57019

相关配置：
db2inst1@linux-db2v9:~/sqllib> more db2nodes.cfg
0 linux-db2v9 0
1 linux-db2v9 1
2 linux-db2v9 2
3 linux-db2v9 3

db2inst1@linux-db2v9:~> more .rhosts
linux-db2v9 db2inst1

db2inst1@linux-db2v9:~> more /etc/services   | grep -i db2
ibm-db2         523/tcp    # IBM-DB2
ibm-db2         523/udp    # IBM-DB2
questdb2-lnchr 5677/tcp   # Quest Central DB2 Launchr
questdb2-lnchr 5677/udp   # Quest Central DB2 Launchr
db2c_db2inst1   50001/tcp
DB2_db2inst1    60000/tcp
DB2_db2inst1_1 60001/tcp
DB2_db2inst1_2 60002/tcp
DB2_db2inst1_END        60003/tcp
db2inst1@linux-db2v9:~>

db2inst1@linux-db2v9:~> db2 get dbm cfg | grep -i svc
TCP/IP Service name                          (SVCENAME) = db2c_db2inst1

相关测试：
db2inst1@linux-db2v9:~> ping linux-db2v9
PING linux-db2v9.site (172.20.21.102) 56(84) bytes of data.
64 bytes from linux-db2v9.site (172.20.21.102): icmp_seq=1 ttl=64 time=0.053 ms
64 bytes from linux-db2v9.site (172.20.21.102): icmp_seq=2 ttl=64 time=0.029 ms
--- linux-db2v9.site ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 0.029/0.041/0.053/0.012 ms
db2inst1@linux-db2v9:~> rsh linux-db2v9
linux-db2v9.site: Connection refused

db2inst1@linux-db2v9:~> db2_all date

linux-db2v9.site: Connection refused

linux-db2v9.site: Connection refused

linux-db2v9.site: Connection refused

linux-db2v9.site: Connection refuse

老觉得rsh这一块配置有问题，但不知道出在哪里。

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