Error: User modify failed. Cannot modify user on other node: usermod: user luca does not exist.
Error: User modify failed. Cannot modify user on other node: usermod: user ’luca’ does not exist.
Overview: This article describes an error encountered on the Master node GUI when attempting to modify a non-existent user 'luca', with solutions including adding the user on the Slave node or following a script that helps you automate the creation of non-existent system users.
This error is received while modifying the user from GUI(Mater node).
- Add the user in the Slave node. Run the following command.
:~# useradd -K UMASK=0077 -m -s '/usr/local/bin/ezsh' -g 'ezuser' <username>
Ex: :~# useradd -K UMASK=0077 -m -s '/usr/local/bin/ezsh' -g 'ezuser' luca
Alternative Method.
2. Delete the Gateway user(luca) from the Master node and create the same user from GUI.
Note: You will lose user logs.
Note: Script to add in all the missing users.
Create a bash script to automate the creation of system users based on usernames retrieved from a MySQL database table.
:~# vim usercreate_script.sh
!/bin/bash
# MySQL root password
sqlpass="YourMySQLRootPassword"
# Retrieve database and table names
db_name=$(awk -F ' ' '/db_name/ {print $2}' /usr/local/etc/ezlogin/ez.conf)
tbl_prefix=$(awk -F ' ' '/db_prefix/ {print $2}' /usr/local/etc/ezlogin/ez.conf)
tbl_name="${tbl_prefix}users"
# Retrieve usernames from MySQL
usernames=$(mysql -u root -p"${sqlpass}" -D "$db_name" -N -e "SELECT username FROM $tbl_name")
#Loop through each username and add the user if they do not exist
for username in $usernames; do
if ! id -u "$username" >/dev/null 2>&1; then
useradd -m -s /usr/local/bin/ezsh "$username"
echo "Adding user $username to the system..."
fi
done
And Execute the script.
:~# sh usercreate_script.sh
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