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NAME

vntsd - virtual network terminal server daemon for Logical Domains
 

SYNOPSIS

/usr/lib/ldoms/vntsd 

DESCRIPTION

The vntsd daemon is a server that supports connections to the Logical Domains (LDoms) console by using telnet(1). When a telnet session starts, vntsd sends telnet options to the client indicating a willingness to remotely echo characters and to suppress go ahead.

Consoles are organized into groups by the LDoms Manager. Each console group is assigned a unique group name and TCP port number. vntsd uses the group's port number to export access to the consoles within that group. To establish a connection with a console or console group, a user starts a telnet(1) session with the corresponding group's port number. Depending on the number of consoles within that group, vntsd does one of two things:

o If there is only one console in the group, vntsd connects a session to that LDoms console.

o If there are multiple consoles in the group, vntsd prompts the user to select the console to which they would like to connect, as shown in "Multiple-Console Options," below.

For each console, vntsd provides write access only to the first user connecting to the console. Subsequent users connecting to the console are allowed only to read from the console and wait for write access. When the first user disconnects, write privileges are transferred to the next user waiting in the queue. If a user who does not have write privileges attempts to write to a console, the vntsd displays the following message:

You do not have write access

A user who has no write access can acquire write access forcibly by using the ~w special console command, described in "Special Console Commands," below.

vntsd can be invoked only with superuser privileges or by someone in the Primary Administrator role.  

OPTIONS

The options for vntsd are divided into multiple-console options and console commands.  

Multiple-Console Options

The options listed below are supported when there are multiple LDoms consoles in a group. The syntax for the use of these options is:

<hostname>-vnts-<group-name>: <option>

For example:

myhost-vnts-salesgroup: h

The h option invokes help, as described below.

h

Display the following help text:

h -- this help
l -- list of consoles
q -- quit
c{id}, n{name} -- connect to console of domain {id} or domain name

l

List all consoles in the group. For example:

DOMAIN ID       DOMAIN NAME     DOMAIN STATE
0               ldg1            online
1               ldg2            connected
...             ...             ...

The two domain states and their meanings are:

online

No one is connected to the console.

connected

At least one user is already connected to the console.

q

Disconnect from vntsd.

c{id}, n{name}

Connect to specified console. Upon connection, the following message is displayed:

Connecting to console <domain-name> in group <group-name>
Press ~? for control options ....

Special Console Commands

A tilde (~) appearing as the first character of a line is an escape signal that directs vntsd to perform a special console command. The tilde-tilde (~~) sequence outputs a tilde. In conjunction with the initial tilde, vntsd accepts the following special console commands:

~.

Disconnect from the console or console group.

~w

Force write access to the console.

~p

Disconnect from this console, and connect to the console that precedes this console in the list of consoles.

~n

Disconnect from this console, and connect to the console that follows this console in the list of consoles.

~#

Send break.

~?

Display vntsd help, as follows:

~# - Send break
~. - Exit from this console
~w - Force write access
~n - Console next
~p - Console previous
~? - Help

FILES

/usr/lib/ldoms/vntsd

Binary executable vntsd file.

/usr/lib/ldoms/vntsd.xml

Service management facility (smf(5)) manifest file for vntsd.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE Availability SUNWldoms Interface Stability

SEE ALSO

telnet(1), svccfg(1M), attributes(5), smf(5)  

NOTES

The vntsd is managed by the service management facility, smf(5), under the service identifier:

svc:/ldoms/vntsd

You can change the following properties using the svccfg(1M) command:

vntsd/vcc_device

Set an instance of the virtual console concentrator (vcc) driver to which vntsd is connected.

vntsd/listen_addr

Set the IP address to which vntsd listens, using the following syntax:

vntsd/listen_addr:"xxx.xxx.xxx.xxx"

...where xxx.xxx.xxx.xxx is a valid IP address. The default value of this property is to listen on IP address 127.0.0.1.

vntsd/timeout_minutes

Set timeout in minutes. vntsd will timeout (close) telnet connection if there is no activity (input or output) on the console. The default value is 0, which disables timeout.

Index

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

Multiple-Console Options

Special Console Commands

FILES

ATTRIBUTES

SEE ALSO

NOTES

Партнёры:

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