Nethserver Zabbix uses PostgreSQL.
Reset password of “Admin” to default “zabbix”:
Use psql to edit the database:
su - postgres -c "psql zabbix"
Update Admin with new password:
update users set passwd='$2y$10$92nDno4n0Zm7Ej7Jfsz8WukBfgSS/U0QkIuu8WkJPihXBb2A1UrEK' where alias='Admin';
Exit:
\q
Sources:
No, it should be safe.
You may use more complex login methods like 2FA for your apps (not always easily possible).
Here is a link to the Zabbix Telegram howto and some more interesting Zabbix templates.
Check out the wiki for more information.
Create a virtualhost, choose your wanted PHP version, put your codeigniter files to the virtualhost file space and you’re done.