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Server with OpenVZ virtualisation is not responding but VMs are OK
03-27-2014
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ct_ssh(3erl) Erlang Module Definition ct_ssh(3erl) NAME
ct_ssh - SSH/SFTP client module. DESCRIPTION
SSH/SFTP client module. ct_ssh uses the OTP ssh application and more detailed information about e.g. functions, types and options can be found in the documentation for this application. The Server argument in the SFTP functions should only be used for SFTP sessions that have been started on existing SSH connections (i.e. when the original connection type is ssh ). Whenever the connection type is sftp , use the SSH connection reference only. The following options are valid for specifying an SSH/SFTP connection (i.e. may be used as config elements): [{ConnType, Addr}, {port, Port}, {user, UserName} {password, Pwd} {user_dir, String} {public_key_alg, PubKeyAlg} {connect_timeout, Timeout} {key_cb, KeyCallbackMod}] ConnType = ssh | sftp . Please see ssh(3erl) for other types. All timeout parameters in ct_ssh functions are values in milliseconds. DATA TYPES
connection() = handle() | target_name() (see module ct) : handle() = handle() (see module ct_gen_conn) : Handle for a specific SSH/SFTP connection. ssh_sftp_return() = term() : A return value from an ssh_sftp function. EXPORTS
apread(SSH, Handle, Position, Length) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). apread(SSH, Server, Handle, Position, Length) -> term() apwrite(SSH, Handle, Position, Data) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). apwrite(SSH, Server, Handle, Position, Data) -> term() aread(SSH, Handle, Len) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). aread(SSH, Server, Handle, Len) -> term() awrite(SSH, Handle, Data) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). awrite(SSH, Server, Handle, Data) -> term() close(SSH, Handle) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). close(SSH, Server, Handle) -> term() connect(KeyOrName) -> {ok, Handle} | {error, Reason} Equivalent to connect(KeyOrName, host, []) . connect(KeyOrName, ConnType) -> {ok, Handle} | {error, Reason} Equivalent to connect(KeyOrName, ConnType, []) . connect(KeyOrName, ConnType, ExtraOpts) -> {ok, Handle} | {error, Reason} Types KeyOrName = Key | Name Key = atom() Name = target_name() (see module ct) ConnType = ssh | sftp | host ExtraOpts = ssh_connect_options() Handle = handle() Reason = term() Open an SSH or SFTP connection using the information associated with KeyOrName . If Name (an alias name for Key ), is used to identify the connection, this name may be used as connection reference for subsequent calls. It's only possible to have one open connection at a time associated with Name . If Key is used, the returned handle must be used for subsequent calls (multiple connections may be opened using the config data specified by Key ). ConnType will always override the type specified in the address tuple in the configuration data (and in ExtraOpts ). So it is possi- ble to for example open an sftp connection directly using data originally specifying an ssh connection. The value host means the connection type specified by the host option (either in the configuration data or in ExtraOpts ) will be used. ExtraOpts (optional) are extra SSH options to be added to the config data for KeyOrName . The extra options will override any exist- ing options with the same key in the config data. For details on valid SSH options, see the documentation for the OTP ssh applica- tion. del_dir(SSH, Name) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). del_dir(SSH, Server, Name) -> term() delete(SSH, Name) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). delete(SSH, Server, Name) -> term() disconnect(SSH) -> ok | {error, Reason} Types SSH = connection() Reason = term() Close an SSH/SFTP connection. exec(SSH, Command) -> {ok, Data} | {error, Reason} Equivalent to exec(SSH, Command, DefaultTimeout) . exec(SSH, Command, Timeout) -> {ok, Data} | {error, Reason} Types SSH = connection() Command = string() Timeout = integer() Data = list() Reason = term() Requests server to perform Command . A session channel is opened automatically for the request. Data is received from the server as a result of the command. exec(SSH, ChannelId, Command, Timeout) -> {ok, Data} | {error, Reason} Types SSH = connection() ChannelId = integer() Command = string() Timeout = integer() Data = list() Reason = term() Requests server to perform Command . A previously opened session channel is used for the request. Data is received from the server as a result of the command. get_file_info(SSH, Handle) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). get_file_info(SSH, Server, Handle) -> term() list_dir(SSH, Path) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). list_dir(SSH, Server, Path) -> term() make_dir(SSH, Name) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). make_dir(SSH, Server, Name) -> term() make_symlink(SSH, Name, Target) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). make_symlink(SSH, Server, Name, Target) -> term() open(SSH, File, Mode) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). open(SSH, Server, File, Mode) -> term() opendir(SSH, Path) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). opendir(SSH, Server, Path) -> term() position(SSH, Handle, Location) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). position(SSH, Server, Handle, Location) -> term() pread(SSH, Handle, Position, Length) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). pread(SSH, Server, Handle, Position, Length) -> term() pwrite(SSH, Handle, Position, Data) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). pwrite(SSH, Server, Handle, Position, Data) -> term() read(SSH, Handle, Len) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). read(SSH, Server, Handle, Len) -> term() read_file(SSH, File) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). read_file(SSH, Server, File) -> term() read_file_info(SSH, Name) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). read_file_info(SSH, Server, Name) -> term() read_link(SSH, Name) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). read_link(SSH, Server, Name) -> term() read_link_info(SSH, Name) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). read_link_info(SSH, Server, Name) -> term() receive_response(SSH, ChannelId) -> {ok, Data} | {error, Reason} Equivalent to receive_response(SSH, ChannelId, close) . receive_response(SSH, ChannelId, End) -> {ok, Data} | {error, Reason} Equivalent to receive_response(SSH, ChannelId, End, DefaultTimeout) . receive_response(SSH, ChannelId, End, Timeout) -> {ok, Data} | {timeout, Data} | {error, Reason} Types SSH = connection() ChannelId = integer() End = Fun | close | timeout Timeout = integer() Data = list() Reason = term() Receives expected data from server on the specified session channel. If End == close , data is returned to the caller when the channel is closed by the server. If a timeout occurs before this happens, the function returns {timeout,Data} (where Data is the data received so far). If End == timeout , a timeout is expected and {ok,Data} is returned both in the case of a timeout and when the channel is closed. If End is a fun, this fun will be called with one argument - the data value in a received ssh_cm message (see ssh_connection(3erl)). The fun should return true to end the receiv- ing operation (and have the so far collected data returned), or false to wait for more data from the server. (Note that even if a fun is supplied, the function returns immediately if the server closes the channel). rename(SSH, OldName, NewName) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). rename(SSH, Server, OldName, NewName) -> term() send(SSH, ChannelId, Data) -> ok | {error, Reason} Equivalent to send(SSH, ChannelId, 0, Data, DefaultTimeout) . send(SSH, ChannelId, Data, Timeout) -> ok | {error, Reason} Equivalent to send(SSH, ChannelId, 0, Data, Timeout) . send(SSH, ChannelId, Type, Data, Timeout) -> ok | {error, Reason} Types SSH = connection() ChannelId = integer() Type = integer() Data = list() Timeout = integer() Reason = term() Send data to server on specified session channel. send_and_receive(SSH, ChannelId, Data) -> {ok, Data} | {error, Reason} Equivalent to send_and_receive(SSH, ChannelId, Data, close) . send_and_receive(SSH, ChannelId, Data, End) -> {ok, Data} | {error, Reason} Equivalent to send_and_receive(SSH, ChannelId, 0, Data, End, DefaultTimeout) . send_and_receive(SSH, ChannelId, Data, End, Timeout) -> {ok, Data} | {error, Reason} Equivalent to send_and_receive(SSH, ChannelId, 0, Data, End, Timeout) . send_and_receive(SSH, ChannelId, Type, Data, End, Timeout) -> {ok, Data} | {error, Reason} Types SSH = connection() ChannelId = integer() Type = integer() Data = list() End = Fun | close | timeout Timeout = integer() Reason = term() Send data to server on specified session channel and wait to receive the server response. See receive_response/4 for details on the End argument. session_close(SSH, ChannelId) -> ok | {error, Reason} Types SSH = connection() ChannelId = integer() Reason = term() Closes an SSH session channel. session_open(SSH) -> {ok, ChannelId} | {error, Reason} Equivalent to session_open(SSH, DefaultTimeout) . session_open(SSH, Timeout) -> {ok, ChannelId} | {error, Reason} Types SSH = connection() Timeout = integer() ChannelId = integer() Reason = term() Opens a channel for an SSH session. sftp_connect(SSH) -> {ok, Server} | {error, Reason} Types SSH = connection() Server = pid() Reason = term() Starts an SFTP session on an already existing SSH connection. Server identifies the new session and must be specified whenever SFTP requests are to be sent. subsystem(SSH, ChannelId, Subsystem) -> Status | {error, Reason} Equivalent to subsystem(SSH, ChannelId, Subsystem, DefaultTimeout) . subsystem(SSH, ChannelId, Subsystem, Timeout) -> Status | {error, Reason} Types SSH = connection() ChannelId = integer() Subsystem = string() Timeout = integer() Status = success | failure Reason = term() Sends a request to execute a predefined subsystem. write(SSH, Handle, Data) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). write(SSH, Server, Handle, Data) -> term() write_file(SSH, File, Iolist) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). write_file(SSH, Server, File, Iolist) -> term() write_file_info(SSH, Name, Info) -> Result Types SSH = connection() Result = ssh_sftp_return() | {error, Reason} Reason = term() For info and other types, see ssh_sftp(3erl). write_file_info(SSH, Server, Name, Info) -> term() AUTHORS
<> common_test 1.5.3 ct_ssh(3erl)