kernel v8.0.2

erl_boot_server (kernel v8.0.2)

This server is used to assist diskless Erlang nodes that fetch all Erlang code from another machine.

This server is used to fetch all code, including the start script, if an Erlang runtime system is started with command-line flag -loader inet. All hosts specified with command-line flag -hosts Host must have one instance of this server running.

This server can be started with the Kernel configuration parameter start_boot_server.

The erl_boot_server can read regular files and files in archives. See code(3) and erl_prim_loader(3) in ERTS.

The support for loading code from archive files is experimental. It is released before it is ready to obtain early feedback. The file format, semantics, interfaces, and so on, can be changed in a future release.

SEE ALSO

erts:init(3), erts:erl_prim_loader(3)

Link to this section Summary

Functions

add_slave/1

Adds a Slave node to the list of allowed slave hosts.

delete_slave/1

Deletes a Slave node from the list of allowed slave hosts.

start/1

Starts the boot server. Slaves is a list of IP addresses for hosts, which are allowed to use this server as a boot server.

start_link/1

Starts the boot server and links to the caller. This function is used to start the server if it is included in a supervision tree.

which_slaves/0

Returns the current list of allowed slave hosts.

Link to this section Functions

Link to this function

add_slave/1

Specs

add_slave(Slave) -> ok | {error, Reason}
             when
                 Slave :: Host,
                 Host :: inet:ip_address() | inet:hostname(),
                 Reason :: {badarg, Slave}.

Adds a Slave node to the list of allowed slave hosts.

Link to this function

delete_slave/1

Specs

delete_slave(Slave) -> ok | {error, Reason}
                when
                    Slave :: Host,
                    Host :: inet:ip_address() | inet:hostname(),
                    Reason :: {badarg, Slave}.

Deletes a Slave node from the list of allowed slave hosts.

Link to this function

start/1

Specs

start(Slaves) -> {ok, Pid} | {error, Reason}
         when
             Slaves :: [Host],
             Host :: inet:ip_address() | inet:hostname(),
             Pid :: pid(),
             Reason :: {badarg, Slaves}.

Starts the boot server. Slaves is a list of IP addresses for hosts, which are allowed to use this server as a boot server.

Link to this function

start_link/1

Specs

start_link(Slaves) -> {ok, Pid} | {error, Reason}
              when
                  Slaves :: [Host],
                  Host :: inet:ip_address() | inet:hostname(),
                  Pid :: pid(),
                  Reason :: {badarg, Slaves}.

Starts the boot server and links to the caller. This function is used to start the server if it is included in a supervision tree.

Link to this function

which_slaves/0

Specs

which_slaves() -> Slaves
                when
                    Slaves :: [Slave],
                    Slave :: {Netmask :: inet:ip_address(), Address :: inet:ip_address()}.

Returns the current list of allowed slave hosts.