ssh key_load_public：無効な形式の警告

SSHは私のシステムに正常に接続しましたが、フラグがないにもかかわらずメッセージを-v受け取りました。key_load_public: invalid format以下はverboseフラグを使用した出力です。

具体的に

debug1: key_load_public: No such file or directory debug1: identity file /home/myname/.ssh/private_rsa_key-cert type -1

そのファイルがないので問題のようです。しかし、他のシステムをチェックしてみると、上記の2行についても同じメッセージが表示されました。しかし、それ以前はそうではありませんkey_load_public: invalid format。それが私が本当に取り除きたいものです。 Authorized_keys ファイルに対する権限は、private_keys の権限と同様に、両方のリモート・システムで同じように見えます。

    $ ssh -v desired_host
    OpenSSH_7.2p2, OpenSSL 1.0.2g  1 Mar 2016
    debug1: Reading configuration data /home/myname/.ssh/config
    debug1: /home/dli/.ssh/config line 16: Applying options for desired_host
    debug1: Reading configuration data /etc/ssh_config
    debug1: Connecting to desired_host [X.X.X.X] port 22.
    debug1: Connection established.
    key_load_public: invalid format
    debug1: identity file /home/myname/.ssh/private_rsa_key type -1
    debug1: key_load_public: No such file or directory
    debug1: identity file /home/myname/.ssh/private_rsa_key-cert type -1
    debug1: Enabling compatibility mode for protocol 2.0
    debug1: Local version string SSH-2.0-OpenSSH_7.2
    debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
    debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000
    debug1: Authenticating to desired_host:22 as 'myname'
    debug1: SSH2_MSG_KEXINIT sent
    debug1: SSH2_MSG_KEXINIT received
    debug1: kex: algorithm: diffie-hellman-group-exchange-sha256
    debug1: kex: host key algorithm: ssh-rsa
    debug1: kex: server->client cipher: aes128-ctr MAC: [email protected] compression: none
    debug1: kex: client->server cipher: aes128-ctr MAC: [email protected] compression: none
    debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
    debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
    debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
    debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
    debug1: Server host key: ssh-rsa SHA256:EmG/FBK0OCXtaAqAkfHKxoXKLGiZiHUsQpObK6aWd30
    debug1: Host 'desired_host' is known and matches the RSA host key.
    debug1: Found key in /home/myname/.ssh/known_hosts:39
    debug1: rekey after 4294967296 blocks
    debug1: SSH2_MSG_NEWKEYS sent
    debug1: expecting SSH2_MSG_NEWKEYS
    debug1: rekey after 4294967296 blocks
    debug1: SSH2_MSG_NEWKEYS received
    debug1: SSH2_MSG_SERVICE_ACCEPT received
    debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
    debug1: Next authentication method: publickey
    debug1: Trying private key: /home/myname/.ssh/private_rsa_key
    debug1: Authentication succeeded (publickey).
    Authenticated to desired_host ([X.X.X.X]:22).
    debug1: channel 0: new [client-session]
    debug1: Requesting [email protected]
    debug1: Entering interactive session.
    debug1: pledge: network