Hey!
I’m new to Duplicati and I tried to install Duplicati on fresh CentOS 7 minimal (VM) using
https://duplicati.readthedocs.io/en/latest/02-installation/#prerequisites
But after installation I tried to run through the browser https://IP:8002
I didn’t got any GUI it showed unable to connect.
I allowed 8200 port
The service of duplicati is running
What might be the error or any step I had done wrong…
Please help.
I too looking for the same. What next and how to get GUI via browser.
Using centos 7.
First of all, note that the default port is 8200, not 8002. BUT - by default Duplicati only listens on localhost, so you cannot connect over the network. You can adjust this behavior but I’m not sure how to do it on CentOS.
On Debian Linux I would add this to /etc/default/duplicati and then restart the service:
DAEMON_OPTS="--webservice-interface=any --webservice-port=8200"
Yes 8200 not 8002 I made a mistake while typing
I thought it may have been a typo 
Are you able to try my suggestion about using that command line option to have it listen on all interfaces?
I created a new fresh server and followed the steps below and luckily started working:
yum install yum-utils
rpm --import “http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF”
yum-config-manager --add-repo Index of /repo/centos7
yum install mono-devel
wget https://updates.duplicati.com/beta/duplicati-2.0.4.23-2.0.4.23_beta_20190714.noarch.rpm
yum install libappindicator
curl -O https://updates.duplicati.com/beta/duplicati-2.0.3.3-2.0.3.3_beta_20180402.noarch.rpm #get updated link from Duplicati
yum install duplicati*
firewall-cmd --add-port=8200/tcp --permanent
firewall-cmd --reload
echo “[Unit]
Description=Duplicati Backup software
[Service]
ExecStart=/usr/bin/mono /usr/lib/duplicati/Duplicati.Server.exe --webservice-interface=any
Restart=on-failure
RestartSec=30
[Install]
WantedBy=multi-user.target” > /etc/systemd/system/duplicati.service
systemctl enable duplicati
systemctl start duplicati
yum install httpd
systemctl start httpd
systemctl enable httpd
systemctl status httpd