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Connecting to the ESXi host using SSH fails with the error: Network error: Connection Refused (1039095)

Last Updated: 8/11/2017Categories: TroubleshootingTotal Views: 152621Language:
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Learn how VMware Skyline Advisor and Skyline Health Diagnostics work together to provide proactive intelligence and self-service log analysis.

Use Skyline Advisor to avoid issues before they occur across VCF, vSphere, vSAN, NSX, vROps & Horizon. Skyline Findings are based on top KBs, VMSAs/CVEs and design best practices.

Use Skyline Health Diagnostics to root cause vSphere & vSAN logs when an issue occurs. Skyline Health Diagnostic Findings are based on top KBs and VMSA/CVEs. You can use the Skyline Health Diagnostics tool in online or offline mode.

If you require additional help from technical support, please use Skyline Advisor to initiate a Log Assist to reduce time to upload logs. TSEs can also initiate logs to reduce effort.

Symptoms

Unable to add the ESXi host to vCenter Server

Cannot connect to the ESXi host using SSH

Connecting to the ESXi host using SSH fails

You see the error:

Cannot contact the specified host (IP Address/hostname). The host may not be available on the network, a network configuration problem may exist. or the management service on this host may not be responding.

Cannot connect to the ESXi host using putty

When connecting to the ESXi host using putty, you see the error:

Network error: Connection Refused

You have enabled Tech Support Mode. For more information, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.0 (1017910).

Cause

This issue may occur if the /etc/inetd.conf file is empty or does not contain the correct settings for remote shell access and VMware authentication daemon.

Note: In ESXi 5.x and 6.0, the inetd.conf file is located at /var/run/.

Resolution

To resolve this issue:

Connect to the ESXi console directly using KVM session , such as iLO, iLOM, DRAC, RSA, or IP KVM, press ALT+F1, and then log in as root.

Open the inetd.conf file using a text editor.

To open the file using the vi editor, run this command:

# vi /etc/inetd.conf

Ensure that the contents of the /etc/inetd.conf file are similar to:

# Internet server configuration database

# Remote shell access

ssh stream tcp nowait root /sbin/dropbearmulti dropbear ++min=0,swap,group=shell -i -K60
ssh stream tcp6 nowait root /sbin/dropbearmulti dropbear ++min=0,swap,group=shell -i -K60

In ESXi 5.x, the contents under Remote shell access appear similar to:

ssh stream tcp nowait root /usr/lib/vmware/openssh/bin/sshd sshd ++swap,group=host/vim/vimuser/terminal/ssh -i
ssh stream tcp6 nowait root /usr/lib/vmware/openssh/bin/sshd sshd ++swap,group=host/vim/vimuser/terminal/ssh -i

# VMware authentication daemon
authd stream tcp nowait root /sbin/authd authd
authd stream tcp6 nowait root /sbin/authd authd

Save the changes made to the file.

Note: Alternatively, you can copy the inetd.conf file from a good known ESXi host using a utility such as WinSCP.

Run this command to restart the SSH daemon for the changes to take effect:

# /etc/init.d/TSM-SSH restart

Note: In ESXi 5.x, run this command:

/etc/init.d/SSH restart

Related Information

Using Tech Support Mode in ESXi 4.1, ESXi 5.x, and ESXi 6.x
SSH を使用した ESXi ホストへの接続が次のエラーで失敗する：ネットワーク エラー： 接続が拒否されました
使用 SSH 连接到 ESXi 主机失败，并显示以下错误：网络错误: 连接被拒绝

Detectable by VMware SkylineTM

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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