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Node in HA becomes slow and stops responding to SSH login attempts

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Category:
ontap-9
Specialty:
ds_cvo
Last Updated:

Applies to

  • ONTAP 9
  • Cloud Volumes ONTAP (CVO)
  • SSH

Issue

One node in HA pair becomes extremely slow and all login sessions to the node are being closed after successful authentication:
 
# ssh -vvv admin@10.0.0.1
OpenSSH_7.2p2, OpenSSL 1.0.2p-fips  14 Aug 2018
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 25: Applying options for *
debug2: resolving "10.0.0.1" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 10.0.0.1 [10.0.0.1] port 22.
debug1: Connection established.
 
...
 
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug3: send packet: type 50
debug2: we sent a keyboard-interactive packet, wait for reply
debug3: receive packet: type 60
debug2: input_userauth_info_req
debug2: input_userauth_info_req: num_prompts 1
Password:
debug3: send packet: type 61
debug1: Authentication succeeded (keyboard-interactive).
Authenticated to 10.0.0.1 ([10.0.0.1]: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: send packet: type 1
debug1: channel 0: free: client-session, nchannels 1
debug3: channel 0: status: The following connections are open:
  #0 client-session (t3 r-1 i0/0 o0/0 fd 5/6 cc -1)
 
Connection to 10.0.0.1 closed by remote host.
Connection to 10.0.0.1 closed.
Transferred: sent 2168, received 1540 bytes, in 0.0 seconds
Bytes per second: sent 23079317.4, received 16393980.1
debug1: Exit status -1
 
real    0m50.135s
user    0m0.015s
sys     0m0.000s
#

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