See the storage system man pages of hosts.equiv and rshd on the NetApp on the Web (NOW) to learn more about the /etc/hosts.equiv file.
Telnet and rsh are applications you use to access the command-line interface (CLI) of the storage system.
To access the storage system, complete the following steps:
Log in with your user name and password.
Issue commands exactly as you do at the storage system console.
Following is an example:
vero% telnet jeckle
Trying 172.24.1.20...
Connected to jeckle.lab.netapp.com.
Escape character is '^]'.
login: root
Password:
jeckle> Fri Feb 7 01:54:02 GMT [jeckle: telnet_0:info]: root logged in from host: vero.eng.netapp.com
jeckle> version
NetApp Release 6.4X10: Thu Jan 23 03:37:23 PST 2003
<1d>
jeckle> snap list
Volume vol0
working...
%/used %/total date name
---------- ---------- ------------ --------
0% ( 0%) 0% ( 0%) Feb 07 00:00 nightly.0
0% ( 0%) 0% ( 0%) Feb 06 20:00 hourly.0
0% ( 0%) 0% ( 0%) Feb 06 16:00 hourly.1
Volume vol1
working...
%/used %/total date name
---------- ---------- ------------ --------
11% (11%) 0% ( 0%) Feb 07 00:00 nightly.0
23% (14%) 0% ( 0%) Feb 06 20:00 hourly.0
32% (14%) 0% ( 0%) Feb 06 16:00 hourly.1
jeckle>
To access the storage system, complete the following step:
Pass a string that is to be executed as
a single command in the storage system console, for example, rsh
heckle snap list.
After returning the output to the console, rsh exits.
The following is an example:
vero% rsh heckle snap list
Volume nate_kitten1_1040097652
working...
%/used %/total date name
---------- ---------- ------------ --------
19% (19%) 0% ( 0%) Feb 07 00:00 nightly.0
35% (24%) 0% ( 0%) Feb 06 20:00 hourly.0
46% (23%) 0% ( 0%) Feb 06 16:00 hourly.1
Volume vol0
working...
%/used %/total date name
---------- ---------- ------------ --------
0% ( 0%) 0% ( 0%) Feb 07 00:00 nightly.0
0% ( 0%) 0% ( 0%) Feb 06 20:00 hourly.0
0% ( 0%) 0% ( 0%) Feb 06 16:00 hourly.1
vero %
With rsh, access is determined by the file /etc/hosts.equiv.
|
|
See the storage system man pages of hosts.equiv and rshd on the NetApp on the Web (NOW) to learn more about the /etc/hosts.equiv file. |
Enter the host names and the user names (optional) in the file as shown below:
vero joe
vero root
mayo
The users joe and root can use rsh to access the storage system from the host vero. However, any user can use rsh from the host mayo.
Executing a simple command rsh storage_system_name does not log you in to the shell, unlike on a UNIX system, because there is no shell to run (the console is an integral part of the Data ONTAP operating system). You can execute multiple commands by separating them with a semicolon, as shown in the following example:
priv set -q advanced; help
The preceding example prints the available advanced level commands. Like a UNIX shell this time, the storage system executes these rsh commands in a separate context. The preceding command does not affect the priv level of the current console session.
Following are the advantages of using Telnet and rsh:
The storage system CLI is often the first available interface to the new functionality.
It is useful for system administrators who are performing ad-hoc administrative tasks.
Although there are advantages to using Telnet and rsh, NetApp recommends that you do not use Telnet or rsh while writing management code because of the following issues:
Parsing the command line output is difficult. There are cases, such as in some reports, in which a field is occasionally empty. Furthermore, CLI changes can sometimes break code that previously worked (however, NetApp makes a continual effort to minimize backward-incompatible CLI changes).
Using rsh from Windows code is difficult because Windows pops up a separate command-line window (over which you do not have control) while rsh is running. If you issue a command that takes time to execute, you're stuck with a window in front of your application until the command returns. If there is a network partition, or if the storage system is down, the pop-up window remains until the TCP timeout expires.
Related Topics
System Administration Storage Management Guide for Data ONTAP 6.4