Not being able to SSH

Hi,

I think it's possible an analysis I left running might have created more files than what I had available and now I am not being able to SSH. Could you please check this situation, this is what I get:
ssh asilva@core.cluster.france-bioinformatique.fr
kex_exchange_identification: Connection closed by remote host

Thanks for your help
Ana

Hi Ana

We have had to reboot the login node to resolve the access issue. You should be able to ssh to it now.

Thanks Nicole

Thank you so much for your fast reply, it works now!
Cheers,
Ana

Bonjour,
J'ai le même message d'erreur lorsque je tente de me connecter, il semble que le problème ne soit pas résolu pour moi.
Merci!

Bonjour Alexis,

En effet, nous avons aussi constaté des problèmes de connexions.
Nous avons pris d'autres mesures (ban IP). Cela devrait être bon maintenant.

C'est réglé, merci pour la réactivité !

Anyone else not being able to ssh? It asks me for my password but then nothing happens, as if it is stuck.

Thanks for your help
Ana

Hi @asilva

I don't see any error on our side.
Coul you retry or try in a verbose mode (ssh -vvv) to debug ?

Thanks for your fast reply, maybe it's my work internet connection, going to try in a bit at home. Here is the output of the verbose mode:

(base) MacBook-Pro-de-Ana:~ acas$ ssh -vvv asilva@core.cluster.france-bioinformatique.fr
OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: Connecting to core.cluster.france-bioinformatique.fr port 22.
debug1: Connection established.
debug1: identity file /Users/acas/.ssh/id_rsa type 0
debug1: identity file /Users/acas/.ssh/id_rsa-cert type -1
debug1: identity file /Users/acas/.ssh/id_dsa type -1
debug1: identity file /Users/acas/.ssh/id_dsa-cert type -1
debug1: identity file /Users/acas/.ssh/id_ecdsa type -1
debug1: identity file /Users/acas/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/acas/.ssh/id_ed25519 type -1
debug1: identity file /Users/acas/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/acas/.ssh/id_xmss type -1
debug1: identity file /Users/acas/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug3: fd 5 is O_NONBLOCK
debug1: Authenticating to core.cluster.france-bioinformatique.fr:22 as 'asilva'
debug3: hostkeys_foreach: reading file "/Users/acas/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/acas/.ssh/known_hosts:19
debug3: load_hostkeys: loaded 1 keys from core.cluster.france-bioinformatique.fr
debug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,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-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
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,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.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
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
debug2: compression ctos: none,zlib@openssh.com,zlib
debug2: compression stoc: none,zlib@openssh.com,zlib
debug2: languages ctos: 
debug2: languages stoc: 
debug2: first_kex_follows 0 
debug2: reserved 0 
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,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,diffie-hellman-group1-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
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,blowfish-cbc,cast128-cbc,3des-cbc
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,blowfish-cbc,cast128-cbc,3des-cbc
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
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
debug2: compression ctos: none,zlib@openssh.com
debug2: compression stoc: none,zlib@openssh.com
debug2: languages ctos: 
debug2: languages stoc: 
debug2: first_kex_follows 0 
debug2: reserved 0 
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:iWJpgKuSIXY4qN5jHVf/cz2LAm5UsotzHU1Xb4LyZKM
debug3: hostkeys_foreach: reading file "/Users/acas/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/acas/.ssh/known_hosts:19
debug3: load_hostkeys: loaded 1 keys from core.cluster.france-bioinformatique.fr
debug3: hostkeys_foreach: reading file "/Users/acas/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/acas/.ssh/known_hosts:19
debug3: load_hostkeys: loaded 1 keys from 192.54.201.181
debug1: Host 'core.cluster.france-bioinformatique.fr' is known and matches the ECDSA host key.
debug1: Found key in /Users/acas/.ssh/known_hosts:19
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /Users/acas/.ssh/id_rsa RSA SHA256:DczbI4Vg75N85sC7V6zdvLkmxVsCGeIWc1XxVSswPB4
debug1: Will attempt key: /Users/acas/.ssh/id_dsa 
debug1: Will attempt key: /Users/acas/.ssh/id_ecdsa 
debug1: Will attempt key: /Users/acas/.ssh/id_ed25519 
debug1: Will attempt key: /Users/acas/.ssh/id_xmss 
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic,password
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /Users/acas/.ssh/id_rsa RSA SHA256:DczbI4Vg75N85sC7V6zdvLkmxVsCGeIWc1XxVSswPB4
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: /Users/acas/.ssh/id_rsa RSA SHA256:DczbI4Vg75N85sC7V6zdvLkmxVsCGeIWc1XxVSswPB4
debug3: sign_and_send_pubkey: RSA SHA256:DczbI4Vg75N85sC7V6zdvLkmxVsCGeIWc1XxVSswPB4
debug3: sign_and_send_pubkey: signing using rsa-sha2-512
debug3: no such identity: /Users/acas/.ssh/id_rsa: No such file or directory
debug1: Trying private key: /Users/acas/.ssh/id_dsa
debug3: no such identity: /Users/acas/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /Users/acas/.ssh/id_ecdsa
debug3: no such identity: /Users/acas/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /Users/acas/.ssh/id_ed25519
debug3: no such identity: /Users/acas/.ssh/id_ed25519: No such file or directory
debug1: Trying private key: /Users/acas/.ssh/id_xmss
debug3: no such identity: /Users/acas/.ssh/id_xmss: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
asilva@core.cluster.france-bioinformatique.fr's password: 
debug3: send packet: type 50
debug2: we sent a password packet, wait for reply
debug3: receive packet: type 52
debug1: Authentication succeeded (password).
Authenticated to core.cluster.france-bioinformatique.fr ([192.54.201.181]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting no-more-sessions@openssh.com
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug3: receive packet: type 91
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: fd 5 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x48
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug3: send packet: type 98
debug1: Sending environment.
debug3: Ignored env TERM_PROGRAM
debug3: Ignored env SHELL
debug3: Ignored env TERM
debug3: Ignored env TMPDIR
debug3: Ignored env CONDA_SHLVL
debug3: Ignored env CONDA_PROMPT_MODIFIER
debug3: Ignored env TERM_PROGRAM_VERSION
debug3: Ignored env TERM_SESSION_ID
debug3: Ignored env USER
debug3: Ignored env CONDA_EXE
debug3: Ignored env SSH_AUTH_SOCK
debug3: Ignored env MKL_INTERFACE_LAYER
debug3: Ignored env _CE_CONDA
debug3: Ignored env PATH
debug3: Ignored env CONDA_MKL_INTERFACE_LAYER_BACKUP
debug3: Ignored env LaunchInstanceID
debug3: Ignored env CONDA_PREFIX
debug3: Ignored env PWD
debug1: Sending env LANG = en_AU.UTF-8
debug2: channel 0: request env confirm 0
debug3: send packet: type 98
debug3: Ignored env XPC_FLAGS
debug3: Ignored env _CE_M
debug3: Ignored env XPC_SERVICE_NAME
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env CONDA_PYTHON_EXE
debug3: Ignored env LOGNAME
debug3: Ignored env CONDA_DEFAULT_ENV
debug3: Ignored env DISPLAY
debug3: Ignored env SECURITYSESSIONID
debug3: Ignored env _
debug3: Ignored env __CF_USER_TEXT_ENCODING
debug2: channel 0: request shell confirm 1
debug3: send packet: type 98
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768

Thanks!

No error with your account, the storage or on our server.

Maybe there is something wrong with your environment or with your locale settings (LANG = en_AU.UTF-8).
Could you try to unset local variables and reconnect:

unset LANG
unset LC_MONETARY
unset LC_NUMERIC
unset LC_MESSAGES
unset LC_COLLATE
unset LC_CTYPE
ssh asilva@core.cluster.france-bioinformatique.fr

Or just restart your computer and retry ?

Thanks for your help, it seems to work from home so it might have been something with internet at work which is weird because I was able to use another cluster. It was the first time I tried ssh with nothing happening but next time I know it might be more about my connection than the cluster.

Thanks!