Common Errors & Troubleshooting

Synopsis: This article provides solution for ezeelogin gateway users experiencing issues with the F1-F4 keys in ezsh when connecting via PuTTY. In PuTTY configuration window, navigate to Terminal > Keyboard. Change the "Function keys and... Read More

Prevent PuTTY window from closing during an SSH session and display the error message? Overview: This article explains how to prevent PuTTY windows from closing during an SSH session if there is any error on the server side. By default, PuTTY... Read More

I get the error LICENSE No license Please contact support even though I have issued the license. synopsis: This article offers step-by-step troubleshooting for the "LICENSE No license" error in Ezeelogin, even after issuing the license. It... Read More

On trying to SSH using the command  ,  the following errors are thrown in the command line ssh -J bastion_host_server   remote_host_server channel 0: open failed: administratively prohibited: open failed stdio forwarding failed... Read More

How to set up the WebSSH console in Ezeelogin and SSH via browser? Overview: This article describes how to set up and utilize the WebSSH console in Ezeelogin, enabling secure SSH access via a browser by configuring Node.js, SSL certificates, SSH... Read More

Unable to open a session- ssh session fails with pam_systemd(sshd:session): Failed to create session Overview: This article focuses on troubleshooting SSH session failures in Ezeelogin's ezsh interface due to "Failed to create session:... Read More

Resolving error: 'unable to get local issuer certificate' during node installation Overview: This article describes how to resolve the 'unable to get local issuer certificate' error during Node installation by temporarily... Read More

Resolving SSH Access Issue: "IP not allowed because none of the user's groups are listed in AllowGroups" Synopsis: This article details a solution for enabling SSH access by temporarily commenting out the AllowGroups directive in /etc/ssh... Read More

How to solve the error sshd[3167]: pam_succeed_if(sshd:auth): requirement "uid >= 1000" not met by user "root" ? Overview: This article explains, how to resolve the error "sshd[3167]: pam_succeed_if(sshd:auth): requirement "uid >= 1000" not... Read More

How do I disable Two Factor Authentication (Google, Yubikey, Access Keyword, DUO) for the admin and other users? For Ezeelogin Version 7 and above. Synopsis: This article describes how to disable Two Factor Authentication (Google, Yubikey,... Read More

How to fix "User add failed. Fingerprint changed: Cannot modify user on this node: REMOTE HOST IDENTIFICATION HAS CHANGED! (Reset fingerprint to authorize the change)" shown in the GUI. Synopsis: This article will help gateway users to fix the... Read More

Troubleshooting PAM Authentication Failures: Illegal User Authentication in SSH Overview:   This article tackles SSH authentication failures due to pam_ldap configuration, specifically addressing errors such as "sshd[902]: debug1:PAM: password... Read More

The Ezeelogin configuration file is located at /usr/local/etc/ezlogin/ez.conf Ezeelogin has two logs files one for the web interface and one for the backend ssh interface called the ezsh shell (short for the Ezeelogin backend shell) FRONTEND OR WEB... Read More

How to resolve database connection issues in Ezeelogin  Synopsis: This article helps Ezeelogin gateway users to solve the error 'ERROR: Unable to connect to your database server using the provided settings. Filename: core/Loader.php' ... Read More

Troubleshooting System Folder Path Errors in Ezeelogin Web GUI Overview: This article guides administrators through resolving errors related to the system folder path configuration in Ezeelogin's web GUI. It covers two main steps: adjusting... Read More

Ezeelogin super admin user account or any other gateway user account got locked out. Synopsis: This article will help to unsuspend the superadmin user (created at the time of Ezeelogin installation) or any other gateway user account when they are... Read More

How to resolve issue while logging into cPanel/WHM with one click? Synopsis: This article helps Ezeelogin gateway users to resolve issues while logging into cPanel/WHM. Step 1: Ensure that you are able to manually login into the remote server with... Read More

How to upgrade MariaDB 5.5 to 10. x in CentOS 7 ?    1. Before upgrading the MariaDB, create a dump of the Ezeelogin database: root@jumpserver:~# mysqldump db_name > db_name_backup.sql -u root -p    Example:  root@jumpserver:~#�... Read More

User can't log in with their SSH key and I'm getting this error in /var/log/secure synopsis: This article explains how to resolve SSH login issues by updating a user's public key, either through the Ezeelogin backend or by manually... Read More

How to configure Automatic su or sudo /switch user CentOS/Freebsd/Ubuntu servers? synopsis: This article provides step-by-step instructions for adding a server to Ezeelogin, detailing the necessary configurations for remote SSH login using either... Read More

How to solve ’Internal browser error: Failed to launch the browser process!’ error while accessing web portal proxy? Overview: This article helps Ezeelogin gateway users to solve the 'Internal browser error: Failed to launch the... Read More

userauth_pubkey: signature algorithm ssh-rsa not in PubkeyAcceptedAlgorithms 1. Login to server and tail /var/log/secure to check errors. Refer below example. root@gateway ~]# tail -f /var/log/secure userauth_pubkey: signature algorithm ssh-rsa... Read More

vi editor does not work as it should when editing files via ezeelogin   Try changing the terminal emulation to auto or vt102 and let us know if it solves the problem. https://www.ezeelogin.com/user_manual/Preferences.html  ... Read More

How to fix Error: Could not bind to any LDAP server: 80090308: LdapErr: DSID-0C090453, comment: AcceptSecurityContext error, data 52e, v3839 Heading to the received error, The error code 52e indicates invalid credentials. Check the list below as... Read More

Reset Ezeelogin super admin user password or security code. Synopsis: This article describes the step-by-step process to securely reset the admin password in Ezeelogin, ensuring continued access and security for your server environment. Resetting... Read More

Installing php-mcrypt on a 64-bit CentOS Ezeelogin SSH Gateway Server Synopsis: php-mcrypt is a PHP extension that provides encryption and decryption functions using the MCrypt library. PHP allows developers to encrypt and decrypt data using... Read More

Resolving the "Invalid Domain for Site Key" reCAPTCHA Error Overview: This article addresses the "ERROR for site owner: Invalid domain for site key" issue encountered while setting up Google reCAPTCHA. It provides solutions to ensure that the... Read More

Troubleshooting "Failed to Establish SSH Session" Errors with Ezeelogin Overview: This article addresses troubleshooting steps for resolving "Failed to establish SSH session" errors encountered when using Ezeelogin's shell interface. Covering... Read More

Troubleshooting "Connection has been closed" Error in Windows RDP Overview: This article provides solutions for resolving the "Connection has been closed" error in Windows RDP. It advises using the web console to inspect error details and... Read More

Resolving Key Exchange Method Mismatch in SSH: diffie-hellman-group1-sha1 Offered Unable to ssh into EXOS network switch from ssh Jumphost,  the error Message on the SSH Client is Unable to negotiate with ip on  port 22: no matching key... Read More

How to solve Error: Server login failed. Authentication by SSH key failed!. Remote Error: (1) if: Expression Syntax. Synopsis: This article will help the gateway users to resolve the error "Error: Server login failed. Authentication by SSH key... Read More

How to fix Error: Server login failed. sh: /usr/local/ezlogin/ezutil: Permission denied synopsis: This article will help the gateway users to fix the error "Error: Server login failed. sh: /usr/local/ezlogin/ezutil: Permission denied". Make sure to... Read More

SSH Connection Error: No Matching MAC Found Due to Strict Cipher Set for PCI DSS Compliance Overview: This article tackles SSH connection issues arising from strict cipher requirements under PCI DSS compliance. It covers troubleshooting connecting... Read More

Getting "reCaptcha: Could not open socket Connection timed out" while logging into gateway server. Synopsis: This article will help the gateway admin user to fix the error "reCaptcha: Could not open socket Connection timed out" while logging into... Read More

Resolving "unknown cipher in list" and "SSLv3 alert handshake failure" errors Overview: This article describes troubleshooting steps for resolving TLSv1 SSL handshake failures due to unknown cipher issues. Upgrading to the latest version of... Read More

Issue with Adding Servers Using Putty Generated Private Key Pair (PPK) Note: The putty key is currently not supported in Ezeelogin. You have to convert it to OpenSSH format. Synopsis: This article describes how to convert Putty-generated private... Read More

Fixing the "Error opening terminal" Issue on Ubuntu. Overview: This article describes how to resolve the "Error opening terminal" issue on Ubuntu by recreating the terminfo symlink from /lib/terminfo to /usr/share/terminfo. If you encounter the... Read More

'no matching host key type found. Their offer: ssh-rsa,ssh-dss [preauth]' got this error in /var/log/secure  Check if  'ssh_host_rsa_key / ssh_host_dsa_key'is enabled on your /etc/ssh/sshd_config If not enabled add or uncomment... Read More

Disable web terminal application in Cpanel  Overview: This article explains how to disable web terminal application in Cpanel for WHM users. Disable web terminal access in Cpanel by creating /var/cpanel/disable_whm_terminal_ui file for WHM users.... Read More

How to fix the error "ALERT: REMOTE HOST IDENTIFICATION HAS CHANGED! Contact Administrator" while SSH'ing into the remote server? Overview: This error occurs when the destination server has its OS reloaded or has a new IP address. Resetting the... Read More

Getting Token not found error or  Session Not found when accessing Cpanel/WHM Overview: This article describes the troubleshooting steps for resolving cPanel/WHM login issues by ensuring the correct date & time, disabling SELinux, resetting... Read More

SET MYSQL ROOT PASSWORD What is Mysql default  Password? The default user for MySQL is the root; by default, it has no password. If you set a password for MySQL and you can’t recall it, you can always reset it and choose another one. For... Read More

How to solve the error occured while modifying Ezeelogin gateway user? Synopsis: Provide step by step instructions to troubleshoot and resolve the error encountered while modifying Ezeelogin gateway user. Step 1: Check if the ezeelogin installed... Read More

User add failed.  sh: /usr/local/ezlogin/ezcltool: Permission denied Synopsis: This article will help the Ezeelogin users to fix the user add error shown in the GUI. Follow below steps to troubleshoot the issue. Step 1: Check if SELinux is... Read More

Resolving "npm ERR! cb.apply is not a function" Error in Ezeelogin Overview: This article addresses the npm ERR! cb.apply is not a function error when installing node modules for the browser-based SSH client in Ezeelogin. The issue arises from a... Read More

Failed to connect to database: Error: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2). An error occurred. Please contact administrator synopsis: This article provides steps to resolve the "Can't connect... Read More

Troubleshooting "Connection has been closed" Error in Ezeelogin RDP via Browser. Overview: Starting with troubleshooting steps, this article describes how to resolve the "Connection has been closed" error in Ezeelogin's RDP via browser by... Read More

Configuring Session Expiry for the Web Interface Synopsis: This article explains what web session timeout is and  also outlines the steps to set or enable session timeout in the Ezeelogin Web Interface.   Web session timeout is an event that... Read More

How to Solve 404 Errors in Nginx? Synopsis: This article provides a detailed guide on resolving 404 errors in Nginx. Ezeelogin installation is under the directory named 'gate' Step 1: In the Nginx configuration, within the location... Read More

Trouble with SSH and Backend EZSH Shell: 'An error occurred. Please contact the administrator.' Overview: This article describes troubleshooting steps for resolving issues with SSH and backend EZSH shell access, focusing on log analysis,... Read More

In Parallel Shell I get the following "An error occurred. Please contact the administrator" Synopsis: This article explains how to resolve the error "An error occurred. Please contact the administrator" when using parallel shell. Make sure that in... Read More

Forcing RDP to use TLS Encryption Windows Remote Desktop Protocol (RDP) is widely used by system administrators to provide remote operators access to internal systems and servers. In a shocking oversight, this connection does not use strong... Read More

Troubleshooting: 'ezinfo' command does not display server details Synopsis: This article describes steps to resolve the issue where the internal command 'ezinfo' does not display server details by adjusting user privileges and... Read More

Error: Could not bind to any LDAP server: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed (self signed certificate in certificate chain) If you are getting the above error when you configured ldap from ezeelogin gui ... Read More

The error "The IP field must contain a valid public IP" pops up when I enter lan IP or private IPs as I need to install Ezeelogin on a machine in lan. How do I overcome this? Synopsis: This article describes how to resolve the "The IP field must... Read More

ERROR: 502 bad gateway error Synopsis:  This article describes steps to resolve a 502 Bad Gateway error in nginx by adjusting buffer sizes in nginx.conf and restarting the nginx service. If you're encountering a 502 Bad Gateway error on... Read More

When we use "less" and "vi" editors, keys such as "Page Up/Down, Home/End, Ins/Del" are not working. How can we fix it? Try different options of Terminal Emulation in account preferences: https://www.ezeelogin.com/user_manual/Preferences.html ... Read More

Error: "Could not setup Ezeelogin Web SSH service" Overview: This article describes troubleshooting steps for resolving the error "Could not setup Ezeelogin Web SSH service," including disabling SELinux, installing SSL certificates, configuring... Read More

Encountering "An error occurred. Please contact administrator." in SSH Shell When Accessing the Remote Server from the Ezeelogin Bastion Host Overview: This article describes an error that typically arises due to permission issues when writing SSH... Read More

The reCaptcha images are not loading while logging into gateway server. Synopsis: This article will help the gateway admin user to fix the issue with loading the reCAPTCHA image while logging into the Ezeelogin GUI. Make sure the gateway server... Read More

How to Resolve the ERROR: " PHP function 'exec' is not available." while Installing Ezeelogin. Synopsis: This article describes steps to resolve the 'PHP function 'exec' is not available' error during Ezeelogin... Read More

Internal commands like ezinfo or ezlist work only for the admin user created at the time of installation and have to be explicitly granted to other users belonging to the Admins group or Users belonging to other User groups. Grant the user View... Read More

How to solve Could not load configuration or 500 error on login page?  Synopsis: This article provides step by step instructions to troubleshoot and resolve error occured on the login page. Step 1: Make sure SELinux is disabled on the server. ... Read More

I get the error /etc/init.d/mysql: line 86: logger: command not found  Had to reinstall bsdutils and it worked. apt-get --reinstall install bsdutils Read More

How to solve the error while changing the password on a FreeBSD system? Synopsis: This article addresses the error encountered when changing the password on a FreeBSD system. To solve the error set the root's shell to bash: chsh -s /usr... Read More

Unable to access the Ezeelogin web gui with SSL enabled Overview: This article explains how to resolve the issue of being unable to access the Ezeelogin web GUI with SSL enabled. The error logs indicated an issue with the MySQL SSL configuration.... Read More

Unable to Access Ezeelogin Webpanel: Blank Page Issue Synopsis: This article provides steps to troubleshoot issues when accessing the web GUI results in a blank page. 1.Make sure PHP is running on the server. root@gateway:~# php -v 2. Make sure... Read More

How to solve the error "Unable to open session" while trying to SSH? Synopsis: This article helps gateway users to resolve the error "Unable to open session" Step 1: Ensure that SELinux is disabled on the Ezeelogin gateway server as well as on the... Read More

Unable to access Control Panel/ Cpanel/WHM and i am getting Error: Error occurred while communicating with the server Overview: This article provides troubleshooting steps for resolving access issues to Control Panel/Cpanel/WHM, emphasizing the... Read More

Troubleshooting Blank GUI Page and "License Expired" SSH Error in Ezeelogin. Overview: This article describes steps to troubleshoot a blank GUI page and "license expired!" SSH error in Ezeelogin by verifying renewal status and flushing the license... Read More

How to solve could not connect to database infinite loop on restore?   Make sure that your mysql root password does not  contain any single or double quote characters. Read More

"Error: LDAP extension is not installed" while clicking ldap tab Overview: This article describes how to resolve the "Error: LDAP extension is not installed" in Ezeelogin by installing the php-ldap extension on CentOS, Ubuntu (for PHP 5 and PHP 7),... Read More

"Could not connect to remote node database" Primary server is down. I get the above error with cluster enabled. synopsis: This article provides troubleshooting steps to resolve the "Could not connect to remote node database" error in a MySQL... Read More

Unable to login into Cpanel/WHM. Getting the error Failed to Connect to IP: Permission Denied Synopsis: This article describes steps to resolve the "Unable to login into cPanel/WHM: Failed to Connect to IP: Permission Denied" error by checking php... Read More

Error: 'Can't connect to local MySQL server through socket '3306 ' in ezsh.log Synopsis: This article describes steps to resolve the 'Can’t connect to local MySQL server through socket '3306'' error in... Read More

Ezeelogin Troubleshooting: Error Logs and Configuration Files   Synopsis: This article provides information about error log files for both backend operations and web interface(Webgui), along with instructions on monitoring console errors. ... Read More

SSH session is slow when Virtual shell is enabled Synopsis: This article helps Ezeelogin gateway users in disabling the virtual shell feature, which can cause slowness in SSH sessions. Note: Virtual shell is an experimental feature. This feature... Read More

Logging into OpenVZ containers using vzctl enter fails with the error 'Unable to get term attr: Invalid argument'. Synopsis: This article will help Ezeelogin Gateway users fix the error encountered while logging into OpenVZ containers... Read More

Invisible control characters in the SSH logs recorded Synopsis: This article describes how the SSH session recording logs every key press of the Ezeelogin gateway users which appear as strange characters in the logs and explains the different modes... Read More

Certificate verify failed   [root@gateway ~]# mysql -u ezlogin_cxn -p -h 192.168.56.124 --ssl-ca=/etc/certs/ca.pem --ssl-cert=/etc/certs/client-cert.pem --ssl-key=/etc/certs/client-key.pemEnter password:ERROR 2026 (HY000): SSL connection error:... Read More

Handling incorrect datetime value during ezeelogin upgrade Overview: This article covers fixing the "Incorrect datetime value" error during upgrade. Run UPDATE db_prefix_users SET expiry=NULL WHERE expiry='0000-00-00 00:00:00'; before... Read More

Current License Limit Reached: Upgrade to Add More Servers Overview: This article explains how to fix the "Error: Reached maximum number of servers allowed by current license. Please upgrade license to add more servers."  by upgrading your license... Read More

Resolving "wrong passphrase or corrupted key" error in ezeelogin Overview: This article addresses the "Wrong passphrase or corrupted key" error in Ezeelogin. Ensure your SSH private key is free from unusual characters. Convert or regenerate the key... Read More

Unable to access Control Panel/ Cpanel/WHM and i am getting Error: Error occurred while communicating with the server Make sure that the outbound ports for the control panel is open in the firewall. For Cpanel/WHM, ensure that outbound 2086/2087... Read More

How to fix the error message "User add failed: Error waiting for connection: Cannot add user on this node: Could not connect" that appears in the GUI? Synopsis: This article will help the gateway users to resolve the error "User add failed: Cannot... Read More

ezsh segfault or ezsh shell crashes without any error messages and Kicked out of ezsh SSH backend shell Overview: The article provides troubleshooting steps for resolving EZSH shell crashes and segfault issues, emphasizing checking resource limits,... Read More

Understanding SSH Log Formatting Issues and Resolving Them. Synopsis: This article describes how to resolve SSH log formatting issues by enabling comprehensive session logging in the Ezeelogin web interface. If you've noticed that your SSH... Read More

How to solve the error the error "An error occurred. Please contact administrator.Connection to server.hostname closed"? Synopsis: This article helps Ezeelogin gateway users to fix the error "An error occurred. Please contact administrator... Read More

Resolving 'Cannot find module 'express' Error in Browser-based SSH Client Overview: This article describes how to resolve the 'Cannot find module 'express'' error in a browser-based SSH Client by installing the... Read More

Fixing Permission Issues in Ezeelogin Web GUI Overview: This article addresses access errors in Ezeelogin's web GUI due to permission issues with specific files and directories. It provides step-by-step instructions to correct permissions for ... Read More

Login Issues with Ezeelogin Backend on CageFS-CloudLinux Unable to login via SSH into ezeelogin shell on CloudLinux server with CageFS enabled.  Error:"/usr/local/bin/ezsh: No such file or directory" With CageFS (CloudLinux) enabled, you might... Read More

Troubleshooting Errors When Unable to Add Servers in the Ezeelogin Web Interface: Password Failures, Timeouts, and More Synopsis: This article provides troubleshooting steps for adding servers in the Ezeelogin web interface, addressing issues like... Read More

How to resolve google 2-factor authentication failures? Synopsis: This article will help the gateway users to fix the error "Invalid Google Authenticator code. Make sure the time is correct on the server and the mobile device" while logging into... Read More

The Function keys ( F1,--F9)  in  Linux  command htop is not  responding. To resolve this,  make sure to set the " Terminal Emulation " function to " Auto " under  " Account -> Preferences -> Terminal Emulation "   ... Read More

Troubleshooting "Ezsh Shell Disallowed" Error for SSH Gateway Users Overview: This article describes SSH gateway users encountering the 'Ezsh shell disallowed' error while accessing the backend via SSH, highlighting the need for explicit... Read More

How to solve Error: User add failed. Cannot add user on this node: FAILED: to establish SSH session  Overview: This article addresses issues when adding users fails due to SSH session establishment problems. Steps include checking firewall... Read More

Verifying Connectivity to license.ezeelogin.com on Ports 80 and 443 from Your Ezeelogin Installed Server. Overview:This article guides you to verify connectivity from your Ezeelogin installed server to license.ezeelogin.com on ports 80 (HTTP) and... Read More

Troubleshooting "Error opening terminal: xterm-256color" in Shell. Overview: This article describes troubleshooting the 'Error opening terminal: xterm-256color' issue in the shell. 1. Edit the file /etc/environment and append the lines as... Read More

Troubleshooting Blank or Unviewable SSH Session Logs Overview:  This article addresses issues with blank or unviewable SSH session logs. It explains that if the 'Encrypt SSH Logs' setting is enabled, you cannot view logs of sessions in... Read More