Add app files.

dcvserver.service

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+[Unit]
+Description=NICE DCV server daemon
+
+[Service]
+PermissionsStartOnly=true
+ExecStartPre=-/sbin/modprobe eveusb
+ExecStart=/usr/bin/dcvserver -d --service
+Restart=always
+BusName=com.nicesoftware.DcvServer
+User=dcv
+Group=dcv
+
+[Install]
+WantedBy=multi-user.target

startup_script.sh

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+#!/bin/bash
+
+# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: MIT-0
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy of this
+# software and associated documentation files (the "Software"), to deal in the Software
+# without restriction, including without limitation the rights to use, copy, modify,
+# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+exec &>> /var/log/startup_script.log
+
+set -xe
+# ps -ef > /tmp/ps.ef
+
+# Check if we have a well configured xorg.conf and create one in case
+if [ ! -f /etc/X11/xorg.conf -o "`grep BusID /etc/X11/xorg.conf | grep PCI`" == "" ] ; then
+    sleep 5
+    echo "Updating the X server configuration ... "
+    sudo systemctl isolate multi-user.target
+    sleep 1
+    # dcvgladmin disable
+    nvidia-xconfig --preserve-busid --enable-all-gpus --connected-monitor=DFP-0,DFP-1,DFP-2,DFP-3
+    # add  Option         "HardDPMS" "false"
+    sed '/^Section "Device"/a \ \ \ \ Option         "HardDPMS" "false"'  /etc/X11/xorg.conf > /tmp/xorg.conf
+    mv /tmp/xorg.conf /etc/X11/xorg.conf
+    # sed '/^Section "Device"/a \ \ \ \ Option         "UseDisplayDevice" "none"'  /etc/X11/xorg.conf > /tmp/xorg.conf
+    # mv /tmp/xorg.conf /etc/X11/xorg.conf
+    sleep 1
+    # dcvgladmin enable
+    sudo systemctl isolate graphical.target
+    sleep 1
+    sudo systemctl enable dcvserver 2>&1
+    sudo systemctl restart dcvserver
+fi
+
+
+firewall-cmd --zone=public --permanent --add-port=22/tcp  # ssh standard TCP port 
+firewall-cmd --zone=public --permanent --add-port=8443/tcp  # DCV standard TCP port 
+firewall-cmd --zone=public --permanent --add-port=8443/udp  # in addition for UDP/QUIC
+firewall-cmd --reload
+
+# set -ex
+
+# AWS="1"
+
+if [ "$AWS" == "1" ] ; then
+    /usr/local/bin/send_dcvsessionready_notification.sh >/dev/null 2>&1 &
+    export AWS_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | jq -r .region)
+    export AWS_DEFAULT_REGION=${AWS_REGION}
+    _username="$(aws secretsmanager get-secret-value --secret-id \
+                   dcv-cred-user --query SecretString  --output text)"
+    _passwd="$(aws secretsmanager get-secret-value --secret-id \
+                   dcv-cred-passwd --query SecretString  --output text)"
+else
+    _username="user"
+    _passwd="dcv"
+fi
+adduser "${_username}" -G wheel 
+echo "${_username}:${_passwd}" |chpasswd
+/usr/bin/dcv create-session --type=virtual --storage-root=%home% --owner "${_username}" --user "${_username}" "${_username}session"