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SSH connection seems to be closed/opened for each command #1187

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winzou opened this issue Apr 28, 2017 · 11 comments
Closed

SSH connection seems to be closed/opened for each command #1187

winzou opened this issue Apr 28, 2017 · 11 comments
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bug

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@winzou
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winzou commented Apr 28, 2017

Q A
Issue Type Bug/Question
Deployer Version 5.0@beta2
Local Machine OS Windows 10
Remote Machine OS Debian Squeeze

Description

It seems that the SSH connection is closed and reopened for each command sent to the server.
I can see the ssh multiplexing initialization and Warning: Permanently added '1.2.3.4' (RSA) to the list of known hosts. between each command.

It's the same if a disable ssh multiplexing, I still have the Warning: Permanently added '1.2.3.4' (RSA) to the list of known hosts. between each command.

=> The consequence is that it is super super slow to execute!

Steps to reproduce

Just execute a task with 2 or more commands to be sent to the server.

Content of hosts.yml

dev:
  hostname: 1.2.3.4
  user: travelblogs
  identityFile: "/C/Users/alex/.ssh/github_rsa"
  stage: dev
  deploy_path: ~/dev
  options:
    - "UserKnownHostsFile=/dev/null"
    - "StrictHostKeyChecking=no"

Output log

➤ Executing task deploy:shared
[1.2.3.4] > if [ -d ~/dev/shared/var/logs ]; then echo 'true'; fi
[1.2.3.4] < ssh multiplexing initialization
[1.2.3.4] < Warning: Permanently added '1.2.3.4' (RSA) to the list of known hosts.
[1.2.3.4] > mkdir -p ~/dev/shared/var/logs
[1.2.3.4] < ssh multiplexing initialization
[1.2.3.4] < Warning: Permanently added '1.2.3.4' (RSA) to the list of known hosts.
[1.2.3.4] > if [ -d $(echo ~/dev/releases/1/var/logs) ]; then echo 'true'; fi
[1.2.3.4] < ssh multiplexing initialization
[1.2.3.4] < Warning: Permanently added '1.2.3.4' (RSA) to the list of known hosts.
[1.2.3.4] < true
[1.2.3.4] > cp -rv ~/dev/releases/1/var/logs ~/dev/shared/var
[1.2.3.4] < ssh multiplexing initialization
[1.2.3.4] < Warning: Permanently added '1.2.3.4' (RSA) to the list of known hosts.
[1.2.3.4] < « /home/travelblogs/dev/releases/1/var/logs/.gitkeep » -> « /home/travelblogs/dev/shared/var/logs/.gitkeep »
@antonmedv
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Looks like a bug with checking is mutliplexing is on.

@antonmedv antonmedv added the bug label May 2, 2017
@itelmenko itelmenko mentioned this issue May 3, 2017
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@barryvdh barryvdh mentioned this issue May 3, 2017
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@barryvdh
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barryvdh commented May 3, 2017

I'm also having this issue (sometimes). How should we debug this?

@antonmedv
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I'll add debug option for ssh

@antonmedv
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Please try with latest version from master brunch. Also add to host this: addSshFlag('-vvvv').

@antonmedv
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Also try this command before dep:

ssh -fMN hostname

@winzou
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winzou commented May 9, 2017

The ssh command first:

$ ssh -fMN myhost.com
Warning: Permanently added 'myhost.com,1.2.3.4' (RSA) to the list of known hosts.

Then with ssh flag -vvvv and dep option -vvv:

$ dep deploy dev -vvv
➤ Executing task deploy:prepare
[myhost.com] > echo $0
[myhost.com] < OpenSSH_7.3p1, OpenSSL 1.0.2j  26 Sep 2016
[myhost.com] < debug1: Reading configuration data /c/Users/alex/.ssh/config
[myhost.com] < debug1: /c/Users/alex/.ssh/config line 34: Applying options for myhost.com
[myhost.com] < debug1: Reading configuration data /etc/ssh/ssh_config
[myhost.com] < debug1: /etc/ssh/ssh_config line 1: Applying options for *
[myhost.com] < debug1: auto-mux: Trying existing master
[myhost.com] < debug2: fd 3 setting O_NONBLOCK
[myhost.com] < debug2: mux_client_hello_exchange: master version 4
[myhost.com] < debug3: mux_client_forwards: request forwardings: 0 local, 0 remote
[myhost.com] < debug3: mux_client_request_session: entering
[myhost.com] < debug3: mux_client_request_alive: entering
[myhost.com] < debug3: mux_client_request_alive: done pid = 5196
[myhost.com] < debug3: mux_client_request_session: session request sent
[myhost.com] < mux_client_request_session: read from master failed: Connection reset by peer
[myhost.com] < debug2: resolving "myhost.com" port 22
[myhost.com] < debug2: ssh_connect_direct: needpriv 0
[myhost.com] < debug1: Connecting to myhost.com [37.59.45.50] port 22.
[myhost.com] < debug1: Connection established.
[myhost.com] < debug1: identity file /c/Users/alex/.ssh/github_rsa type 1
[myhost.com] < debug1: key_load_public: No such file or directory
[myhost.com] < debug1: identity file /c/Users/alex/.ssh/github_rsa-cert type -1
[myhost.com] < debug1: Enabling compatibility mode for protocol 2.0
[myhost.com] < debug1: Local version string SSH-2.0-OpenSSH_7.3
[myhost.com] < debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Debian-5+deb8u3
[myhost.com] < debug1: match: OpenSSH_6.7p1 Debian-5+deb8u3 pat OpenSSH* compat 0x04000000
[myhost.com] < debug2: fd 4 setting O_NONBLOCK
[myhost.com] < debug1: Authenticating to myhost.com:22 as 'travelblogs'
[myhost.com] < debug3: hostkeys_foreach: reading file "/dev/null"
[myhost.com] < debug3: send packet: type 20
[myhost.com] < debug1: SSH2_MSG_KEXINIT sent
[myhost.com] < debug3: receive packet: type 20
[myhost.com] < debug1: SSH2_MSG_KEXINIT received
[myhost.com] < debug2: local client KEXINIT proposal
[myhost.com] < debug2: KEX algorithms: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
[myhost.com] < debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
[myhost.com] < debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
[myhost.com] < debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
[myhost.com] < debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
[myhost.com] < debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
[myhost.com] < debug2: compression ctos: none,zlib@openssh.com,zlib
[myhost.com] < debug2: compression stoc: none,zlib@openssh.com,zlib
[myhost.com] < debug2: languages ctos:
[myhost.com] < debug2: languages stoc:
[myhost.com] < debug2: first_kex_follows 0
[myhost.com] < debug2: reserved 0
[myhost.com] < debug2: peer server KEXINIT proposal
[myhost.com] < debug2: KEX algorithms: diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1
[myhost.com] < debug2: host key algorithms: ssh-rsa
[myhost.com] < debug2: ciphers ctos: aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes128-ctr
[myhost.com] < debug2: ciphers stoc: aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes128-ctr
[myhost.com] < debug2: MACs ctos: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160
[myhost.com] < debug2: MACs stoc: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160
[myhost.com] < debug2: compression ctos: none,zlib@openssh.com
[myhost.com] < debug2: compression stoc: none,zlib@openssh.com
[myhost.com] < debug2: languages ctos:
[myhost.com] < debug2: languages stoc:
[myhost.com] < debug2: first_kex_follows 0
[myhost.com] < debug2: reserved 0
[myhost.com] < debug1: kex: algorithm: diffie-hellman-group-exchange-sha256
[myhost.com] < debug1: kex: host key algorithm: ssh-rsa
[myhost.com] < debug1: kex: server->client cipher: aes128-ctr MAC: umac-128-etm@openssh.com compression: none
[myhost.com] < debug1: kex: client->server cipher: aes128-ctr MAC: umac-128-etm@openssh.com compression: none
[myhost.com] < debug3: send packet: type 34
[myhost.com] < debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
[myhost.com] < debug3: receive packet: type 31
[myhost.com] < debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
[myhost.com] < debug2: bits set: 1554/3072
[myhost.com] < debug3: send packet: type 32
[myhost.com] < debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
[myhost.com] < debug3: receive packet: type 33
[myhost.com] < debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
[myhost.com] < debug1: Server host key: ssh-rsa SHA256:NmWQtclwzo+qD5qMGpJHEqaEY+UOnnyN1ppxsE3R2CI
[myhost.com] < debug3: hostkeys_foreach: reading file "/dev/null"
[myhost.com] < debug3: hostkeys_foreach: reading file "/dev/null"
[myhost.com] < Warning: Permanently added 'myhost.com,37.59.45.50' (RSA) to the list of known hosts.
[myhost.com] < debug2: bits set: 1529/3072
[myhost.com] < debug3: send packet: type 21
[myhost.com] < debug2: set_newkeys: mode 1
[myhost.com] < debug1: rekey after 4294967296 blocks
[myhost.com] < debug1: SSH2_MSG_NEWKEYS sent
[myhost.com] < debug1: expecting SSH2_MSG_NEWKEYS
[myhost.com] < debug3: receive packet: type 21
[myhost.com] < debug2: set_newkeys: mode 0
[myhost.com] < debug1: rekey after 4294967296 blocks
[myhost.com] < debug1: SSH2_MSG_NEWKEYS received
[myhost.com] < debug2: key: /c/Users/alex/.ssh/github_rsa (0x2005b358), explicit, agent
[myhost.com] < debug3: send packet: type 5
[myhost.com] < debug3: receive packet: type 6
[myhost.com] < debug2: service_accept: ssh-userauth
[myhost.com] < debug1: SSH2_MSG_SERVICE_ACCEPT received
[myhost.com] < debug3: send packet: type 50
[myhost.com] < debug3: receive packet: type 51
[myhost.com] < debug1: Authentications that can continue: publickey,password
[myhost.com] < debug3: start over, passed a different list publickey,password
[myhost.com] < debug3: preferred publickey,keyboard-interactive,password
[myhost.com] < debug3: authmethod_lookup publickey
[myhost.com] < debug3: remaining preferred: keyboard-interactive,password
[myhost.com] < debug3: authmethod_is_enabled publickey
[myhost.com] < debug1: Next authentication method: publickey
[myhost.com] < debug1: Offering RSA public key: /c/Users/alex/.ssh/github_rsa
[myhost.com] < debug3: send_pubkey_test
[myhost.com] < debug3: send packet: type 50
[myhost.com] < debug2: we sent a publickey packet, wait for reply
[myhost.com] < debug3: receive packet: type 60
[myhost.com] < debug1: Server accepts key: pkalg ssh-rsa blen 279
[myhost.com] < debug2: input_userauth_pk_ok: fp SHA256:TE1sd32+xFV6XNLhppJuaqg5y81pz+iJmZjwXGGqLuI
[myhost.com] < debug3: sign_and_send_pubkey: RSA SHA256:TE1sd32+xFV6XNLhppJuaqg5y81pz+iJmZjwXGGqLuI
[myhost.com] < debug3: send packet: type 50
[myhost.com] < debug3: receive packet: type 52
[myhost.com] < debug1: Authentication succeeded (publickey).
[myhost.com] < Authenticated to myhost.com ([37.59.45.50]:22).
[myhost.com] < debug1: setting up multiplex master socket
[myhost.com] < debug3: muxserver_listen: temporary control path /c/Users/alex/.ssh/deployer_mux_myhost.com.b3h4sXuxbzEh3PRv
[myhost.com] < ControlSocket /c/Users/alex/.ssh/deployer_mux_myhost.com already exists, disabling multiplexing
[myhost.com] < debug2: fd 6 setting O_NONBLOCK
[myhost.com] < debug2: fd 7 setting O_NONBLOCK
[myhost.com] < debug2: fd 8 setting O_NONBLOCK
[myhost.com] < debug1: channel 0: new [client-session]
[myhost.com] < debug3: ssh_session2_open: channel_new: 0
[myhost.com] < debug2: channel 0: send open
[myhost.com] < debug3: send packet: type 90
[myhost.com] < debug1: Requesting no-more-sessions@openssh.com
[myhost.com] < debug3: send packet: type 80
[myhost.com] < debug1: Entering interactive session.
[myhost.com] < debug1: pledge: network
[myhost.com] < debug3: receive packet: type 91
[myhost.com] < debug2: callback start
[myhost.com] < debug1: Requesting authentication agent forwarding.
[myhost.com] < debug2: channel 0: request auth-agent-req@openssh.com confirm 0
[myhost.com] < debug3: send packet: type 98
[myhost.com] < debug2: fd 4 setting TCP_NODELAY
[myhost.com] < debug3: ssh_packet_set_tos: set IP_TOS 0x08
[myhost.com] < debug2: client_session2_setup: id 0
[myhost.com] < debug1: Sending command: bash -s; printf "" $?;
[myhost.com] < debug2: channel 0: request exec confirm 1
[myhost.com] < debug3: send packet: type 98
[myhost.com] < debug2: callback done
[myhost.com] < debug2: channel 0: open confirm rwindow 0 rmax 32768
[myhost.com] < debug2: channel 0: rcvd adjust 2097152
[myhost.com] < debug3: receive packet: type 99
[myhost.com] < debug2: channel_input_status_confirm: type 99 id 0
[myhost.com] < debug2: exec request accepted on channel 0
[myhost.com] < debug2: channel 0: read<=0 rfd 6 len 0
[myhost.com] < debug2: channel 0: read failed
[myhost.com] < debug2: channel 0: close_read
[myhost.com] < debug2: channel 0: input open -> drain
[myhost.com] < debug2: channel 0: ibuf empty
[myhost.com] < debug2: channel 0: send eof
[myhost.com] < debug3: send packet: type 96
[myhost.com] < debug2: channel 0: input drain -> closed
[myhost.com] < bash
[myhost.com] < debug3: receive packet: type 98
[myhost.com] < debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
[myhost.com] < debug3: receive packet: type 96
[myhost.com] < debug2: channel 0: rcvd eof
[myhost.com] < debug2: channel 0: output open -> drain
[myhost.com] < debug3: receive packet: type 97
[myhost.com] < debug2: channel 0: rcvd close
[myhost.com] < debug3: channel 0: will not send data after close
[myhost.com] < debug3: channel 0: will not send data after close
[myhost.com] < debug2: channel 0: obuf empty
[myhost.com] < debug2: channel 0: close_write
[myhost.com] < debug2: channel 0: output drain -> closed
[myhost.com] < debug2: channel 0: almost dead
[myhost.com] < debug2: channel 0: gc: notify user
[myhost.com] < debug2: channel 0: gc: user detached
[myhost.com] < debug2: channel 0: send close
[myhost.com] < debug3: send packet: type 97
[myhost.com] < debug2: channel 0: is dead
[myhost.com] < debug2: channel 0: garbage collecting
[myhost.com] < debug1: channel 0: free: client-session, nchannels 1
[myhost.com] < debug3: channel 0: status: The following connections are open:
[myhost.com] <   #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1 cc -1)
[myhost.com] <
[myhost.com] < debug3: send packet: type 1
[myhost.com] < debug3: fd 0 is not O_NONBLOCK
[myhost.com] < debug3: fd 1 is not O_NONBLOCK
[myhost.com] < debug3: fd 2 is not O_NONBLOCK
[myhost.com] < Transferred: sent 3280, received 2616 bytes, in 0.8 seconds
[myhost.com] < Bytes per second: sent 4176.9, received 3331.3
[myhost.com] < debug1: Exit status 0
[myhost.com] > if [ ! -d ~/dev ]; then mkdir -p ~/dev; fi
[myhost.com] < OpenSSH_7.3p1, OpenSSL 1.0.2j  26 Sep 2016
[myhost.com] < debug1: Reading configuration data /c/Users/alex/.ssh/config
[myhost.com] < debug1: /c/Users/alex/.ssh/config line 34: Applying options for myhost.com
[myhost.com] < debug1: Reading configuration data /etc/ssh/ssh_config
[myhost.com] < debug1: /etc/ssh/ssh_config line 1: Applying options for *
[myhost.com] < debug1: auto-mux: Trying existing master
[myhost.com] < debug2: fd 3 setting O_NONBLOCK
[myhost.com] < debug2: mux_client_hello_exchange: master version 4
[myhost.com] < debug3: mux_client_forwards: request forwardings: 0 local, 0 remote
[myhost.com] < debug3: mux_client_request_session: entering
[myhost.com] < debug3: mux_client_request_alive: entering
[myhost.com] < debug3: mux_client_request_alive: done pid = 5196
[myhost.com] < debug3: mux_client_request_session: session request sent
[myhost.com] < mux_client_request_session: read from master failed: Connection reset by peer
[myhost.com] < debug2: resolving "myhost.com" port 22
[myhost.com] < debug2: ssh_connect_direct: needpriv 0
[myhost.com] < debug1: Connecting to myhost.com [37.59.45.50] port 22.
[myhost.com] < debug1: Connection established.
[myhost.com] < debug1: identity file /c/Users/alex/.ssh/github_rsa type 1
[myhost.com] < debug1: key_load_public: No such file or directory
[myhost.com] < debug1: identity file /c/Users/alex/.ssh/github_rsa-cert type -1
[myhost.com] < debug1: Enabling compatibility mode for protocol 2.0
[myhost.com] < debug1: Local version string SSH-2.0-OpenSSH_7.3
[myhost.com] < debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Debian-5+deb8u3
[myhost.com] < debug1: match: OpenSSH_6.7p1 Debian-5+deb8u3 pat OpenSSH* compat 0x04000000
[myhost.com] < debug2: fd 4 setting O_NONBLOCK
[myhost.com] < debug1: Authenticating to myhost.com:22 as 'travelblogs'
[myhost.com] < debug3: hostkeys_foreach: reading file "/dev/null"
[myhost.com] < debug3: send packet: type 20
[myhost.com] < debug1: SSH2_MSG_KEXINIT sent
[myhost.com] < debug3: receive packet: type 20
[myhost.com] < debug1: SSH2_MSG_KEXINIT received
[myhost.com] < debug2: local client KEXINIT proposal
[myhost.com] < debug2: KEX algorithms: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
[myhost.com] < debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
[myhost.com] < debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
[myhost.com] < debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
[myhost.com] < debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
[myhost.com] < debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
[myhost.com] < debug2: compression ctos: none,zlib@openssh.com,zlib
[myhost.com] < debug2: compression stoc: none,zlib@openssh.com,zlib
[myhost.com] < debug2: languages ctos:
[myhost.com] < debug2: languages stoc:
[myhost.com] < debug2: first_kex_follows 0
[myhost.com] < debug2: reserved 0
[myhost.com] < debug2: peer server KEXINIT proposal
[myhost.com] < debug2: KEX algorithms: diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1
[myhost.com] < debug2: host key algorithms: ssh-rsa
[myhost.com] < debug2: ciphers ctos: aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes128-ctr
[myhost.com] < debug2: ciphers stoc: aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes128-ctr
[myhost.com] < debug2: MACs ctos: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160
[myhost.com] < debug2: MACs stoc: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160
[myhost.com] < debug2: compression ctos: none,zlib@openssh.com
[myhost.com] < debug2: compression stoc: none,zlib@openssh.com
[myhost.com] < debug2: languages ctos:
[myhost.com] < debug2: languages stoc:
[myhost.com] < debug2: first_kex_follows 0
[myhost.com] < debug2: reserved 0
[myhost.com] < debug1: kex: algorithm: diffie-hellman-group-exchange-sha256
[myhost.com] < debug1: kex: host key algorithm: ssh-rsa
[myhost.com] < debug1: kex: server->client cipher: aes128-ctr MAC: umac-128-etm@openssh.com compression: none
[myhost.com] < debug1: kex: client->server cipher: aes128-ctr MAC: umac-128-etm@openssh.com compression: none
[myhost.com] < debug3: send packet: type 34
[myhost.com] < debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
[myhost.com] < debug3: receive packet: type 31
[myhost.com] < debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
[myhost.com] < debug2: bits set: 1487/3072
[myhost.com] < debug3: send packet: type 32
[myhost.com] < debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
[myhost.com] < debug3: receive packet: type 33
[myhost.com] < debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
[myhost.com] < debug1: Server host key: ssh-rsa SHA256:NmWQtclwzo+qD5qMGpJHEqaEY+UOnnyN1ppxsE3R2CI
[myhost.com] < debug3: hostkeys_foreach: reading file "/dev/null"
[myhost.com] < debug3: hostkeys_foreach: reading file "/dev/null"
[myhost.com] < Warning: Permanently added 'myhost.com,37.59.45.50' (RSA) to the list of known hosts.
[myhost.com] < debug2: bits set: 1568/3072
[myhost.com] < debug3: send packet: type 21
[myhost.com] < debug2: set_newkeys: mode 1
[myhost.com] < debug1: rekey after 4294967296 blocks
[myhost.com] < debug1: SSH2_MSG_NEWKEYS sent
[myhost.com] < debug1: expecting SSH2_MSG_NEWKEYS
[myhost.com] < debug3: receive packet: type 21
[myhost.com] < debug2: set_newkeys: mode 0
[myhost.com] < debug1: rekey after 4294967296 blocks
[myhost.com] < debug1: SSH2_MSG_NEWKEYS received
[myhost.com] < debug2: key: /c/Users/alex/.ssh/github_rsa (0x2005b358), explicit, agent
[myhost.com] < debug3: send packet: type 5
[myhost.com] < debug3: receive packet: type 6
[myhost.com] < debug2: service_accept: ssh-userauth
[myhost.com] < debug1: SSH2_MSG_SERVICE_ACCEPT received
[myhost.com] < debug3: send packet: type 50
[myhost.com] < debug3: receive packet: type 51
[myhost.com] < debug1: Authentications that can continue: publickey,password
[myhost.com] < debug3: start over, passed a different list publickey,password
[myhost.com] < debug3: preferred publickey,keyboard-interactive,password
[myhost.com] < debug3: authmethod_lookup publickey
[myhost.com] < debug3: remaining preferred: keyboard-interactive,password
[myhost.com] < debug3: authmethod_is_enabled publickey
[myhost.com] < debug1: Next authentication method: publickey
[myhost.com] < debug1: Offering RSA public key: /c/Users/alex/.ssh/github_rsa
[myhost.com] < debug3: send_pubkey_test
[myhost.com] < debug3: send packet: type 50
[myhost.com] < debug2: we sent a publickey packet, wait for reply
[myhost.com] < debug3: receive packet: type 60
[myhost.com] < debug1: Server accepts key: pkalg ssh-rsa blen 279
[myhost.com] < debug2: input_userauth_pk_ok: fp SHA256:TE1sd32+xFV6XNLhppJuaqg5y81pz+iJmZjwXGGqLuI
[myhost.com] < debug3: sign_and_send_pubkey: RSA SHA256:TE1sd32+xFV6XNLhppJuaqg5y81pz+iJmZjwXGGqLuI
[myhost.com] < debug3: send packet: type 50
[myhost.com] < debug3: receive packet: type 52
[myhost.com] < debug1: Authentication succeeded (publickey).
[myhost.com] < Authenticated to myhost.com ([37.59.45.50]:22).
[myhost.com] < debug1: setting up multiplex master socket
[myhost.com] < debug3: muxserver_listen: temporary control path /c/Users/alex/.ssh/deployer_mux_myhost.com.PCCN1hCTMxZGxUZv
[myhost.com] < ControlSocket /c/Users/alex/.ssh/deployer_mux_myhost.com already exists, disabling multiplexing
[myhost.com] < debug2: fd 6 setting O_NONBLOCK
[myhost.com] < debug2: fd 7 setting O_NONBLOCK
[myhost.com] < debug2: fd 8 setting O_NONBLOCK
[myhost.com] < debug1: channel 0: new [client-session]
[myhost.com] < debug3: ssh_session2_open: channel_new: 0
[myhost.com] < debug2: channel 0: send open
[myhost.com] < debug3: send packet: type 90
[myhost.com] < debug1: Requesting no-more-sessions@openssh.com
[myhost.com] < debug3: send packet: type 80
[myhost.com] < debug1: Entering interactive session.
[myhost.com] < debug1: pledge: network
[myhost.com] < debug3: receive packet: type 91
[myhost.com] < debug2: callback start
[myhost.com] < debug1: Requesting authentication agent forwarding.
[myhost.com] < debug2: channel 0: request auth-agent-req@openssh.com confirm 0
[myhost.com] < debug3: send packet: type 98
[myhost.com] < debug2: fd 4 setting TCP_NODELAY
[myhost.com] < debug3: ssh_packet_set_tos: set IP_TOS 0x08
[myhost.com] < debug2: client_session2_setup: id 0
[myhost.com] < debug1: Sending command: bash -s; printf "" $?;
[myhost.com] < debug2: channel 0: request exec confirm 1
[myhost.com] < debug3: send packet: type 98
[myhost.com] < debug2: callback done
[myhost.com] < debug2: channel 0: open confirm rwindow 0 rmax 32768
[myhost.com] < debug2: channel 0: rcvd adjust 2097152
[myhost.com] < debug3: receive packet: type 99
[myhost.com] < debug2: channel_input_status_confirm: type 99 id 0
[myhost.com] < debug2: exec request accepted on channel 0
[myhost.com] < debug2: channel 0: read<=0 rfd 6 len 0
[myhost.com] < debug2: channel 0: read failed
[myhost.com] < debug2: channel 0: close_read
[myhost.com] < debug2: channel 0: input open -> drain
[myhost.com] < debug2: channel 0: ibuf empty
[myhost.com] < debug2: channel 0: send eof
[myhost.com] < debug3: send packet: type 96
[myhost.com] < debug2: channel 0: input drain -> closed
[myhost.com] < debug3: receive packet: type 98
[myhost.com] < debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
[myhost.com] < debug3: receive packet: type 96
[myhost.com] < debug2: channel 0: rcvd eof
[myhost.com] < debug2: channel 0: output open -> drain
[myhost.com] < debug3: receive packet: type 97
[myhost.com] < debug2: channel 0: rcvd close
[myhost.com] < debug3: channel 0: will not send data after close
[myhost.com] < debug3: channel 0: will not send data after close
[myhost.com] < debug2: channel 0: obuf empty
[myhost.com] < debug2: channel 0: close_write
[myhost.com] < debug2: channel 0: output drain -> closed
[myhost.com] < debug2: channel 0: almost dead
[myhost.com] < debug2: channel 0: gc: notify user
[myhost.com] < debug2: channel 0: gc: user detached
[myhost.com] < debug2: channel 0: send close
[myhost.com] < debug3: send packet: type 97
[myhost.com] < debug2: channel 0: is dead
[myhost.com] < debug2: channel 0: garbage collecting
[myhost.com] < debug1: channel 0: free: client-session, nchannels 1
[myhost.com] < debug3: channel 0: status: The following connections are open:
[myhost.com] <   #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1 cc -1)
[myhost.com] <
[myhost.com] < debug3: send packet: type 1
[myhost.com] < debug3: fd 0 is not O_NONBLOCK
[myhost.com] < debug3: fd 1 is not O_NONBLOCK
[myhost.com] < debug3: fd 2 is not O_NONBLOCK
[myhost.com] < Transferred: sent 3312, received 2580 bytes, in 1.0 seconds
[myhost.com] < Bytes per second: sent 3348.8, received 2608.7
[myhost.com] < debug1: Exit status 0

Thanks!

@antonmedv
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Use phar version.

@itelmenko
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I have tried ssh -fMN myuser@mysite.com
It keeps silence. It makes new line with prompt in console.
Let me attach deployer's log... It work very long time ...

@itelmenko
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May I send it to email or another private stream?

It makes a lot of pauses after such lines:

[mysite.com] < debug2: channel 1: obuf empty
[mysite.com] < debug2: channel 1: close_write
[mysite.com] < debug3: mux_client_read_packet: read header failed: Broken pipe
[mysite.com] < debug2: Received exit status from master 0
[mysite.com] < debug2: channel 1: output drain -> closed
[mysite.com] < debug2: channel 1: is dead (local)
[mysite.com] < debug2: channel 1: gc: notify user
[mysite.com] < debug3: mux_master_control_cleanup_cb: entering for channel 1
[mysite.com] < debug2: channel 1: gc: user detached
[mysite.com] < debug2: channel 1: is dead (local)
[mysite.com] < debug2: channel 1: garbage collecting
[mysite.com] < debug1: channel 1: free: mux-control, nchannels 2
[mysite.com] < debug3: channel 1: status: The following connections are open:
[mysite.com] <
[mysite.com] < debug2: set_control_persist_exit_time: schedule exit in 60 seconds

And deployment process is very long ...

@antonmedv
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You can write to my email address.

@antonmedv
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Please, check master branch. I think i fixed it 😄
7c312bf

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@antonmedv @itelmenko @winzou @barryvdh