Unable to Access Exadata DB Node via SSH after Reboot (Doc ID 2015927.1)

Last updated on JUNE 19, 2017

Applies to:

Linux OS - Version Oracle Linux 5.6 and later
Linux x86
Linux x86-64

Symptoms

Unable to access Exadata DB node via ssh after Reboot.

  [root@db01 ~]# ssh db02
  ssh: connect to host db02 port 22: Connection refused


SSHD output from affected server:

[root@db02 ssh]# /usr/sbin/sshd -D -ddd -p 2222
debug2: load_server_config: filename /etc/ssh/sshd_config
debug2: load_server_config: done config len = 1100
debug2: parse_server_config: config /etc/ssh/sshd_config len 1100
debug3: /etc/ssh/sshd_config:15 setting Protocol 2
debug3: /etc/ssh/sshd_config:16 setting AddressFamily inet
debug3: /etc/ssh/sshd_config:33 setting SyslogFacility AUTHPRIV
debug3: /etc/ssh/sshd_config:34 setting LogLevel VERBOSE
debug3: /etc/ssh/sshd_config:39 setting PermitRootLogin yes
debug3: /etc/ssh/sshd_config:40 setting StrictModes yes
debug3: /etc/ssh/sshd_config:43 setting RSAAuthentication no
debug3: /etc/ssh/sshd_config:44 setting PubkeyAuthentication yes
debug3: /etc/ssh/sshd_config:48 setting RhostsRSAAuthentication no
debug3: /etc/ssh/sshd_config:50 setting HostbasedAuthentication no
debug3: /etc/ssh/sshd_config:52 setting RhostsRSAAuthentication no
debug3: /etc/ssh/sshd_config:55 setting IgnoreRhosts yes
debug3: /etc/ssh/sshd_config:59 setting PermitEmptyPasswords no
debug3: /etc/ssh/sshd_config:60 setting PasswordAuthentication yes
debug3: /etc/ssh/sshd_config:64 setting ChallengeResponseAuthentication no
debug3: /etc/ssh/sshd_config:67 setting KerberosAuthentication no
debug3: /etc/ssh/sshd_config:74 setting GSSAPIAuthentication no
debug3: /etc/ssh/sshd_config:76 setting GSSAPICleanupCredentials yes
debug3: /etc/ssh/sshd_config:86 setting UsePAM no
debug3: /etc/ssh/sshd_config:90 setting AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
debug3: /etc/ssh/sshd_config:91 setting AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
debug3: /etc/ssh/sshd_config:92 setting AcceptEnv LC_IDENTIFICATION LC_ALL
debug3: /etc/ssh/sshd_config:96 setting X11Forwarding yes
debug3: /etc/ssh/sshd_config:99 setting PrintMotd no
debug3: /etc/ssh/sshd_config:100 setting PrintLastLog yes
debug3: /etc/ssh/sshd_config:102 setting UseLogin no
debug3: /etc/ssh/sshd_config:103 setting UsePrivilegeSeparation yes
debug3: /etc/ssh/sshd_config:105 setting Compression delayed
debug3: /etc/ssh/sshd_config:106 setting ClientAliveInterval 86400
debug3: /etc/ssh/sshd_config:107 setting ClientAliveCountMax 0
debug3: /etc/ssh/sshd_config:112 setting MaxStartups 100
debug3: /etc/ssh/sshd_config:117 setting Banner /etc/motd
debug3: /etc/ssh/sshd_config:120 setting Subsystem sftp /usr/libexec/openssh/sftp-server
debug3: /etc/ssh/sshd_config:121 setting Ciphers arcfour,aes128-ctr,aes192-ctr,aes256-ctr
debug3: cipher ok: arcfour [arcfour,aes128-ctr,aes192-ctr,aes256-ctr]
debug3: cipher ok: aes128-ctr [arcfour,aes128-ctr,aes192-ctr,aes256-ctr]
debug3: cipher ok: aes192-ctr [arcfour,aes128-ctr,aes192-ctr,aes256-ctr]
debug3: cipher ok: aes256-ctr [arcfour,aes128-ctr,aes192-ctr,aes256-ctr]
debug3: ciphers ok: [arcfour,aes128-ctr,aes192-ctr,aes256-ctr]
debug3: /etc/ssh/sshd_config:122 setting MACs hmac-sha1
debug2: mac_setup: found hmac-sha1
debug3: mac ok: hmac-sha1 [hmac-sha1]
debug3: macs ok: [hmac-sha1]
debug3: /etc/ssh/sshd_config:124 setting ListenAddress 127.0.0.1
debug3: /etc/ssh/sshd_config:125 setting ListenAddress 192.168.0.1
debug3: /etc/ssh/sshd_config:126 setting ListenAddress 192.168.0.2
debug3: /etc/ssh/sshd_config:127 setting ListenAddress 192.168.0.3
debug1: sshd version OpenSSH_5.3p1
debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key.
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key.
debug1: read PEM private key done: type DSA
debug1: private host key: #1 type 2 DSA
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-D'
debug1: rexec_argv[2]='-ddd'
debug1: rexec_argv[3]='-p'
debug1: rexec_argv[4]='2222'
debug3: oom_adjust_setup
Set /proc/self/oom_score_adj from 0 to -1000
debug2: fd 3 setting O_NONBLOCK
debug1: Bind to port 2222 on 192.168.0.1.
Bind to port 2222 on 192.168.0.1 failed: Cannot assign requested address.
debug2: fd 3 setting O_NONBLOCK
debug1: Bind to port 2222 on 192.168.0.2.
Bind to port 2222 on 192.168.0.2 failed: Cannot assign requested address.
debug2: fd 3 setting O_NONBLOCK
debug1: Bind to port 2222 on 192.168.0.3.
Bind to port 2222 on 192.168.0.3 failed: Cannot assign requested address.
debug2: fd 3 setting O_NONBLOCK
debug1: Bind to port 2222 on 127.0.0.1.
Server listening on 127.0.0.1 port 2222.

Changes

 N/A

Cause

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