debug1: Connection established.
debug1: identity file /home/php/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/php/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
ssh_exchange_identification: Connection closed by remote host
yum install openssh.试一试