sshfs 是基于fuse 开发的可以像使用本地系统一样，通过ssh 协议访问远端服务器文件，有好多方便的用途

• 数据同步

• 数据加密访问

• 做为共享数据卷（基于给容器使用）

  yum install -y fuse-sshfs

  sshfs --help
  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 sync_readdir synchronous readdir
  -o sshfs_debug print some debugging information
  -o cache=BOOL enable caching {yes,no} (default: yes)
  -o cache_max_size=N sets the maximum size of the cache (default: 10000)
  -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 cache_clean_interval=N
  sets the interval for automatic cleaning of the
  cache (default: 60)
  -o cache_min_clean_interval=N
  sets the interval for forced cleaning of the
  cache if full (default: 5)
  -o workaround=LIST colon separated list of workarounds
  none no workarounds enabled
  [no]rename fix renaming to existing file (default: off)
  [no]truncate fix truncate for old servers (default: off)
  [no]buflimit fix buffer fillup bug in server (default: on)
  [no]fstat fix fstat for old servers (default: off)
  -o idmap=TYPE user/group ID mapping (default: none)
  none no translation of the ID space
  user only translate UID/GID of connecting user
  file translate UIDs/GIDs contained in uidfile/gidfile
  -o uidfile=FILE file containing username:remote_uid mappings
  -o gidfile=FILE file containing groupname:remote_gid mappings
  -o nomap=TYPE with idmap=file, how to handle missing mappings
  ignore don't do any re-mapping
  error return an error (default)
  -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 slave communicate over stdin and stdout bypassing network
  -o disable_hardlink link(2) will return with errno set to ENOSYS
  -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 auto_unmount auto unmount on process termination
  -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 noforget never forget cached inodes
  -o remember=T remember cached inodes for T seconds (0s)
  -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 max_background=N set number of maximum background requests
  -o congestion_threshold=N set kernel's congestion threshold
  -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
  -o no_remote_flock disable remote file locking (BSD)
  -o no_remote_posix_lock disable remove file locking (POSIX)
  -o [no_]splice_write use splice to write to the fuse device
  -o [no_]splice_move move data while splicing to the fuse device
  -o [no_]splice_read use splice to read from the fuse device

  Module options:

  [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)

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

• 创建挂载点 
  mkdir -p /opt/ssh

• 挂载远端服务器 
  sshfs root@remoteserver:/opt/ /opt/ssh/ 按照提示操作即可

• 查看挂载目录 
  

类似基于fuse 开发的文件系统还是比较多的，对于我们实际中的开发还是挺方便的

https://github.com/libfuse/sshfs