I have tried to execute keytool from Java bin directory but I get an error with warning bash: keytool: command not found.
root@xxxxxx]# keytool -genkey -alias mypassword -keyalg RSA
bash: keytools: command not found
These are the steps which solved my problem:
Search the path where my java was installed
find / -name jre
Move to java directory (where jre was installed on my server)
cd /path/to/jre/bin
Create SSL certificate with keytool command
./keytool -genkey -alias [mypassword] -keyalg [RSA]