Yours was the only set of instructions for installing osTicket 1.10 on CentOS 7 I found online that actually worked. Thanks and kudos to you!
I am not technical but I did manage to cobble the following commands together:
yum -y install epel-release && yum -y install firewalld mariadb mariadb-server httpd php unzip php-mysql php-imap php-xml php-mbstring php-pecl-apcu php-pecl-zendopcache php-intl php-gd && systemctl start firewalld && systemctl enable firewalld && systemctl start httpd && systemctl enable httpd && firewall-cmd --zone=public --add-port=80/tcp --permanent && firewall-cmd --zone=public --add-port=443/tcp --permanent && firewall-cmd --reload && cd /tmp && wget http://osticket.com/sites/default/files/download/osTicket-v1.10.zip && unzip osTicket-v1.10.zip && cp -rp upload /var/www/html/helpdesk && chown -R apache:apache /var/www/html/helpdesk && cd /var/www/html/helpdesk && cp include/ost-sampleconfig.php include/ost-config.php && chmod 0666 include/ost-config.php && systemctl start mariadb && systemctl enable mariadb && mysql_secure_installation
and then finish the rest of the installation, more or less, following your steps.
When I install osTicket-v1.10.zip on a Vultr.com VPS with CentOS 7 with 512 MB of RAM using:
wget http://osticket.com/sites/default/files/download/osTicket-v1.10.zip && unzip osTicket-v1.10.zip
in the above set of commands, new tickets do not appear at all in the osTicket admin panel although the users who create the commands do appear as users. In other words, if a user named Fred Jones (who dropped in out of the blue) were to create a new ticket, I would not see his ticket in the admin panel, but I would see Fred Jones in the admin panel.
However, when I install osTicket-v1.9.12.zip on a Vultr.com VPS with CentOS 7 with 512 MB of RAM using:
wget http://osticket.com/sites/default/files/download/osTicket-v1.9.12.zip && unzip osTicket-v1.9.12.zip
in the above set of commands, new tickets do properly appear in the osTicket admin panel.
In other words, in this second case if a user named Fred Jones (who dropped in out of the blue) were to create a new ticket, I would see his ticket in the admin panel and I would see Fred Jones in the admin panel.
As I am typing this I am wondering if I were to spin up a VPS with 1024 MB RAM then perhaps that would solve the problem.
If you would like the URL to login to my osTicket installation please feel free to let me know. There is nothing else on the VPS other than osTicket which I freshly installed and contains a trivial amount of test data.
I am looking forward to your reply.