docs-archive/apache-airflow-providers-ssh/1.0.0/_sources/connections/ssh.rst.txt

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SSH Connection
==============
The SSH connection type provides connection to use :class:`~airflow.providers.ssh.hooks.ssh.SSHHook` to run
commands on a remote server using :class:`~airflow.providers.ssh.operators.ssh.SSHOperator` or transfer
file from/to the remote server using :class:`~airflow.providers.sftp.operators.sftp.SFTPOperator`.

Configuring the Connection
--------------------------
Host (required)
    The Remote host to connect.

Username (optional)
    The Username to connect to the ``remote_host``.

Password (optional)
    Specify the password of the username to connect to the ``remote_host``.

Port (optional)
    Port of remote host to connect. Default is ``22``.

Extra (optional)
    Specify the extra parameters (as json dictionary) that can be used in ssh
    connection. The following parameters out of the standard python parameters
    are supported:

    * ``key_file`` - Full Path of the private SSH Key file that will be used to connect to the remote_host.
    * ``private_key`` - Content of the private key used to connect to the remote_host.
    * ``private_key_passphrase`` - Content of the private key passphrase used to decrypt the private key.
    * ``timeout`` - An optional timeout (in seconds) for the TCP connect. Default is ``10``.
    * ``compress`` - ``true`` to ask the remote client/server to compress traffic; ``false`` to refuse compression. Default is ``true``.
    * ``no_host_key_check`` - Set to ``false`` to restrict connecting to hosts with no entries in ``~/.ssh/known_hosts`` (Hosts file). This provides maximum protection against trojan horse attacks, but can be troublesome when the ``/etc/ssh/ssh_known_hosts`` file is poorly maintained or connections to new hosts are frequently made. This option forces the user to manually add all new hosts. Default is ``true``, ssh will automatically add new host keys to the user known hosts files.
    * ``allow_host_key_change`` - Set to ``true`` if you want to allow connecting to hosts that has host key changed or when you get 'REMOTE HOST IDENTIFICATION HAS CHANGED' error.  This wont protect against Man-In-The-Middle attacks. Other possible solution is to remove the host entry from ``~/.ssh/known_hosts`` file. Default is ``false``.
    * ``look_for_keys`` - Set to ``false`` if you want to disable searching for discoverable private key files in ``~/.ssh/``

    Example "extras" field:

    .. code-block:: json

       {
          "key_file": "/home/airflow/.ssh/id_rsa",
          "timeout": "10",
          "compress": "false",
          "no_host_key_check": "false",
          "allow_host_key_change": "false",
          "look_for_keys": "false"
       }

    When specifying the connection as URI (in :envvar:`AIRFLOW_CONN_{CONN_ID}` variable) you should specify it
    following the standard syntax of connections, where extras are passed as parameters
    of the URI (note that all components of the URI should be URL-encoded).

    Example connection string with ``key_file`` (path to key file provided in connection):

    .. code-block:: bash

        export AIRFLOW_CONN_MAIN_SERVER='ssh://user:pass@localhost:22?timeout=10&compress=false&no_host_key_check=false&allow_host_key_change=true&key_file=%2Fhome%2Fairflow%2F.ssh%2Fid_rsa'

    Example connection string with ``private_key`` (actual private key provided in connection):

    .. code-block:: bash

        export AIRFLOW_CONN_SSH_SERVER='SSH://127.0.0.1?private_key=-----BEGIN+RSA+PRIVATE+KEY-----%0AMIIEpAIBAAKCAQEAvYUM9xouSUtCKMwm%2FkogT4r3Y%2Bh7H0IPnd7DF9sKCHt9FPJ%2B%0ALaQNX%2FRgnOoPf5ySN42A1nmqv4WX5AKdjEYMIJzN2g2whnol8RVjzP4s2Ao%2B%2BWJ9%0AKstey85CQUgjWFO57ye3TyhbfMZI3fBqDX5RjgkgAZmUpKmv6ttSiCfdgGxLweD7%0ADZexlAjuSfr7i0UZWBIbSKJdePMnWGvZZO%2BGerGlOIKs%2Bqx5agMbNJqDhWn0u8OV%0ACMANhc0yaUAbN08Pjac94%2FxmZPHASytrBmTGd6zYcuzOyxwK8KHMeLUagByT3u7l%0AvWcVyRx8FAXkl7nGF2SQZ0z3JLhmdWMSXuc1AQIDAQABAoIBAQC8%2Bp1REVQyVc8k%0A612%2Bl5%2FccU%2F62elb4%2F26iFS1xv8cMjcp2hwj2sBTfFWSYnsN3syWhI2CUFQJImex%0AP0Jmi7qwEmvaEWiCz%2B5hldisoo%2BI5b6h4qm5MI3YYFYEzrAf9W0kos%2FRKQcBRp%2BG%0AX6MAzYL5RPQbZE%2BqWmJGqGiFyGrBEISl%2FMdoaqSJewTRLHwDtbD9lt4WRPUO%2Font%0A%2FUKwOu3i9z5hMQm9HJJLuKr3hl5jmjJbJUg50a7fjVJzr52VfxH73Z%2Fst40fD3x4%0AH1DHGbX4ar9JOYvhzdXkuxyNXvoglJUIOiAk23Od8q9xOMQAITuwkc1QaVRXwiE7%0Aw41lMC8ZAoGBAOB9PEFyzGwYZgiReOQsAJrlwT7zsY053OGSXAeoLC2OzyLNb8v7%0AnKy2qoTMwxe9LHUDDAp6I8btprvLq35Y72iCbGg0ZK5fIYv%2Bt03NjvOOl1zEuUny%0A5xGe1IvP4YgMQuVMVw5dj11Jmna5eW3oFXlyOQrlth9hrexuI%2BG25qwvAoGBANgf%0AOhy%2FofyIgrIGwaRbgg55rlqViLNGFcJ6I3dVlsRqFxND4PvQZZWfCN3LhIGgI8cT%0AN6hFGPR9QrsmXe3eHM7%2FUpMk53oiPD9E0MemPtQh2AFPUb%2BznqxrXNGvtww6xYBM%0AKYLXcQVn%2FKELwwMYw3F0HGKgCFF0XthV34f%2Bt%2FXPAoGBALVLjqEQlBTsM2LSEP68%0AppRx3nn3lrmGNGMbryUj5OG6BoCFxrbG8gXt05JCR4Bhb4jkOBIyB7i87r2VQ19b%0AdaVCR0h0n6bO%2FymvQNwdmUgLLSRnX3hgKcpqKh7reKlFtbS2zUu1tXVSXuNo8K8Z%0AElatL3Ikh8uaODrLzECaVHpTAoGAXcReoC58h2Zq3faUeUzChqlAfki2gKF9u1zm%0AmlXmDd3BmTgwGtD14g6X%2BDLekKb8Htk1oqooA5t9IlmpExT1BtI7719pltHXtdOT%0AiauVQtBUOW1CmJvD0ibapJdKIeI14k4pDH2QqbnOH8lMmMFbupOX5SptsXl91Pqc%0A%2BxIGmn0CgYBOL2o0Sn%2F8d7uzAZKUBG1%2F0eFr4j6wYwWajVDFOfbJ7WdIf5j%2BL3nY%0A3440i%2Fb2NlEE8nLPDl6cwiOtwV0XFkoiF3ctHvutlhGBxAKHetIxIsnQk7vXqgfP%0AnhsgNypNAQXbxe3gjJEb4Fzw3Ufz3mq5PllYtXKhc%2Bmc4%2B3sN5uGow%3D%3D%0A-----END+RSA+PRIVATE+KEY-----%0A'