如何爲sshfs指定密鑰文件？

Question

我看着sshfs --help，沒有提到關鍵文件。我的計算機上有多個pub/priv密鑰對（用於不同的服務器），我想指定要使用哪個密鑰。我將如何做到這一點？

usage: sshfs [user@]host:[dir] mountpoint [options] 

    general options: 
    -o opt,[opt...]  mount options 
    -h --help   print help 
    -V --version   print version 

    SSHFS options: 
    -p PORT    equivalent to '-o port=PORT' 
    -C      equivalent to '-o compression=yes' 
    -F ssh_configfile  specifies alternative ssh configuration file 
    -1      equivalent to '-o ssh_protocol=1' 
    -o reconnect   reconnect to server 
    -o delay_connect  delay connection to server 
    -o sshfs_sync   synchronous writes 
    -o no_readahead  synchronous reads (no speculative readahead) 
    -o sshfs_debug   print some debugging information 
    -o cache=BOOL   enable caching {yes,no} (default: yes) 
    -o cache_timeout=N  sets timeout for caches in seconds (default: 20) 
    -o cache_X_timeout=N sets timeout for {stat,dir,link} cache 
    -o workaround=LIST  colon separated list of workarounds 
     none    no workarounds enabled 
     all    all workarounds enabled 
     [no]rename  fix renaming to existing file (default: off) 
     [no]nodelaysrv set nodelay tcp flag in sshd (default: off) 
     [no]truncate  fix truncate for old servers (default: off) 
     [no]buflimit  fix buffer fillup bug in server (default: on) 
    -o idmap=TYPE   user/group ID mapping, possible types are: 
     none    no translation of the ID space (default) 
     user    only translate UID of connecting user 
    -o ssh_command=CMD  execute CMD instead of 'ssh' 
    -o ssh_protocol=N  ssh protocol to use (default: 2) 
    -o sftp_server=SERV path to sftp server or subsystem (default: sftp) 
    -o directport=PORT  directly connect to PORT bypassing ssh 
    -o transform_symlinks transform absolute symlinks to relative 
    -o follow_symlinks  follow symlinks on the server 
    -o no_check_root  don't check for existence of 'dir' on server 
    -o password_stdin  read password from stdin (only for pam_mount!) 
    -o SSHOPT=VAL   ssh options (see man ssh_config) 

    FUSE options: 
    -d -o debug   enable debug output (implies -f) 
    -f      foreground operation 
    -s      disable multi-threaded operation 

    -o allow_other   allow access to other users 
    -o allow_root   allow access to root 
    -o nonempty   allow mounts over non-empty file/dir 
    -o default_permissions enable permission checking by kernel 
    -o fsname=NAME   set filesystem name 
    -o subtype=NAME  set filesystem type 
    -o large_read   issue large read requests (2.4 only) 
    -o max_read=N   set maximum size of read requests 

    -o hard_remove   immediate removal (don't hide files) 
    -o use_ino    let filesystem set inode numbers 
    -o readdir_ino   try to fill in d_ino in readdir 
    -o direct_io   use direct I/O 
    -o kernel_cache  cache files in kernel 
    -o [no]auto_cache  enable caching based on modification times (off) 
    -o umask=M    set file permissions (octal) 
    -o uid=N    set file owner 
    -o gid=N    set file group 
    -o entry_timeout=T  cache timeout for names (1.0s) 
    -o negative_timeout=T cache timeout for deleted names (0.0s) 
    -o attr_timeout=T  cache timeout for attributes (1.0s) 
    -o ac_attr_timeout=T auto cache timeout for attributes (attr_timeout) 
    -o intr    allow requests to be interrupted 
    -o intr_signal=NUM  signal to send on interrupt (10) 
    -o modules=M1[:M2...] names of modules to push onto filesystem stack 

    -o max_write=N   set maximum size of write requests 
    -o max_readahead=N  set maximum readahead 
    -o async_read   perform reads asynchronously (default) 
    -o sync_read   perform reads synchronously 
    -o atomic_o_trunc  enable atomic open+truncate support 
    -o big_writes   enable larger than 4kB writes 
    -o no_remote_lock  disable remote file locking 

    Module options: 

    [subdir] 
    -o subdir=DIR   prepend this directory to all paths (mandatory) 
    -o [no]rellinks   transform absolute symlinks to relative 

    [iconv] 
    -o from_code=CHARSET original encoding of file names (default: UTF-8) 
    -o to_code=CHARSET  new encoding of the file names (default: UTF-8) 

Answer 1

注意此選項：

-o SSHOPT = VAL SSH選項（見男子ssh_config中）

如果你看一下man ssh_config，沒有設置路徑的選項到您的私鑰文件IdentityFile，因此您可以這樣做：

sshfs -oIdentityFile=/abs/path/to/id_rsa server: path/to/mnt/point 

身份文件的路徑必須是絕對路徑。