AWS CentOS 7 尝试安装无法启动 VNC 服务器：超出配置的资源限制

Question

i followd this tutorial:
https://www.tecmint.com/install-and-configure-vnc-server-in-centos-7/

to install desktop and connected it via vnc from my windows PC using VNC viewer but im getting this error in the: sudo systemctl start vncserver@:1 stage im doing all from my user centos which is the main user im using with sudo enabled: my /etc/systemd/system/vncserver@:1.service looks like this:

[Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target

[Service]
Type=forking

# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/usr/sbin/runuser -l centos -c "/usr/bin/vncserver %i"
PIDFile=/home/<USER>/.vnc/%H%i.pid
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

[Install]
WantedBy=multi-user.target

this is the info:

-rw-r--r--. 1 root root 1828 Apr  6 16:25 /etc/systemd/system/vncserver@:1.service

now im trying to start the vnc server:

[centos@ip-10-0-0-111 ~]$ sudo systemctl daemon-reload
[centos@ip-10-0-0-111 ~]$ sudo systemctl start vncserver@:1
Job for vncserver@:1.service failed because a configured resource limit was exceeded. See "systemctl status vncserver@:1.service" and "journalctl -xe" for details.

what can be the problem?

Answer 1

1- change Type=forking to Type=simple

2- change to PIDFile=/home/ centos /.vnc/%H%i.pid