Implement rlogin password-less intercommunication between two nodes in linux

In linux, implement rlogin password-less intercommunication between two nodes-Linux Enterprise Application-Linux server application information. The following is a detailed description. By olivenan@hotmail.com

1. Check whether the rsh-server package is installed
[Root @ racnode1 ~] # Rpm-qa rsh-server

2. Install the rsh-server package
[Root @ racnode1 package] # rpm-ivh rsh-server-0.17-25.4.i386.rpm
Warning: rsh-server-0.17-25.4.i386.rpm: V3 DSA signature: NOKEY, key ID b38a8516
Preparing... ######################################## ### [100%]
1: rsh-server ##################################### ###### [100%]
[Root @ racnode1 package] #

3. Modify rlogin in the cd/etc/xinetd. d/directory and change disable = yes to disable = no.
[Root @ racnode1 package] # vi/etc/xinetd. d/rlogin
# Default: on
# Description: rlogind is the server for the rlogin (1) program. The server \
# Provides a remote login facility with authentication based on \
# Privileged port numbers from trusted hosts.
Service login
{
Socket_type = stream
Wait = no
User = root
Log_on_success + = USERID
Log_on_failure + = USERID
Server =/usr/sbin/in. rlogind
Disable = no
}

4. Modify the rsh in the cd/etc/xinetd. d/directory and change disable = yes to disable = no.
[Root @ racnode1 package] # vi/etc/xinetd. d/rsh
# Default: on
# Description: The rshd server is the server for the rcmd (3) routine and ,\
# Consequently, for the rsh (1) program. The server provides \
# Remote execution facilities with authentication based on \
# Privileged port numbers from trusted hosts.
Service shell
{
Socket_type = stream
Wait = no
User = root
Log_on_success + = USERID
Log_on_failure + = USERID
Server =/usr/sbin/in. rshd
Disable = no
}

5. Restart the xinetd service.
[Root @ racnode1 package] # service xinetd restart
Stopping xinetd: [OK]
Starting xinetd: [OK]

6. Restart the xinetd service.
Add rexec, rlogin, and rsh to/etc/securetty
[Root @ racnode1 ~] # Echo "rexec">/etc/securetty
[Root @ racnode1 ~] # Echo "rlogin">/etc/securetty
[Root @ racnode1 ~] # Echo "rsh">/etc/securetty

7. Add/etc/hosts. equiv
Vi/etc/hosts. equiv
Racnode1
Racnode2
Priv1
Priv2
Crs_vip1
Crs_vip2
[Root @ racnode1 package] # vi/etc/hosts
# Do not remove the following line, or various programs
# That require network functionality will fail.
127.0.0.1 racnode1 localhost. localdomain localhost
192.168.6.20.racnode1
192.168.6.252 racnode2
10.1.1.1 priv1
10.1.1.2 priv2
192.168.6.253 crs_vip1
192.168.6.254 crs_vip2
~

8. Add. rhosts
[Root @ racnode1 package] # vi ~ /. Rhosts
Racnode1 root
Racnode2 root
Priv1 root
Priv2 root
~
With the above configuration, you can achieve password-free intercommunication.

9. When using rsh or rlogin to another node, the following message is displayed:
[Root @ racnode1 init. d] # rsh racnode2
Connect to address 192.168.6.252: Connection refused
Trying krb4 rlogin...
Connect to address 192.168.6.252: Connection refused
Trying normal rlogin (/usr/bin/rlogin)
Last login: Mon Apr 21 14:36:32 from racnode1
You have new mail.
[Root @ racnode2 ~] #
[Root @ racnode1 init. d] # rlogin racnode2
Connect to address 192.168.6.252: Connection refused
Trying krb4 rlogin...
Connect to address 192.168.6.252: Connection refused
Trying normal rlogin (/usr/bin/rlogin)
Last login: Mon Apr 21 14:42:17 from racnode1
You have new mail.
[Root @ racnode2 ~] #
View the installation package used by default rlogin
[Root @ racnode1 init. d] # rpm-qf 'which rlogin'
Krb5-workstation-1.3.4-27
[Root @ racnode1 init. d] #
[Root @ racnode2 ~] # Rpm-qf 'which rsh'
Krb5-workstation-1.3.4-27
[Root @ racnode2 ~] #
Solution: 1. Rename the default rlogin and rsh
[Root @ racnode2 ~] # Which rsh
/Usr/kerberos/bin/rsh
[Root @ racnode2 ~] # Mv/usr/kerberos/bin/rsh. original
[Root @ racnode2 ~] # Mv/usr/kerberos/bin/rlogin. original
[Root @ racnode2 ~] # Mv/usr/kerberos/bin/rcp. original
[Root @ racnode2 ~] #
2. Delete package krb5-workstation-1.3.4-27
[Root @ racnode2 ~] # Rpm e krb5-workstation-1.3.4-27