centos7

CentOS 7 - persistent VNC

Install tigervnc server.
```
yum install tigervnc-server
```

Create new display.

cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:1.service

Replace all <USER> placeholders and VNC server parameters (e.g. -geometry 1600×1000) appropriately

vi /etc/systemd/system/vncserver@:1.service

ExecStart=/sbin/runuser -l <your_username_here> -c "/usr/bin/vncserver %i"

#ExecStart=/sbin/runuser -l <your_username_here> -c "/usr/bin/vncserver %i -geometry 1600x1000 -extension RANDR"

Set password with user:
```
su - <USER>
vncpasswd
```
Enable tigervnc server display 1.
```
systemctl enable vncserver@:1.service
```
Reload unit files.
```
systemctl daemon-reload
```
Start vnc server.
```
systemctl start vncserver@:1.service
```

Configure firewalld (example).

firewall-cmd --get-active-zones
firewall-cmd --set-default-zone=home

firewall-cmd --set-default-zone=home

firewall-cmd --permanent --zone=home --list-services

firewall-cmd --permanent --zone=home --remove-service=dhcpv6-client
firewall-cmd --permanent --zone=home --remove-service=ipp-client
firewall-cmd --permanent --zone=home --remove-service=mdns
firewall-cmd --permanent --zone=home --remove-service=samba-client

firewall-cmd --permanent --zone=home --add-port=5901/tcp
firewall-cmd --permanent --zone=home --list-ports

firewall-cmd --reload