HAのノードの速度が低下し、SSHログインへの応答が停止する

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Category:: ontap-9

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環境

ONTAP 9
Cloud Volumes ONTAP（CVO）
SSH

問題

HAペアの一方のノードの処理速度が極端に遅くなり、認証の成功後にそのノードへのすべてのログインセッションが閉じられます。

# 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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