From 763f2584653c594d4eff9463a7b7e4ce6ae35593 Mon Sep 17 00:00:00 2001
From: Ian Campbell <ianc1215@gmail.com>
Date: Thu, 25 Aug 2016 19:24:09 -0400
Subject: [PATCH] Updated systemd unit file and added sample configuration file

Rewrote the systemd unit file to fix an issue where the system was not able to create a PID file inside /var/run.

I fixed this by having systemd create a new directory called /var/run/gns3. Then I had systemd change ownership of the directory to gns3:gns3 so the gns3server executable could read and write the PID file. I have tested these changes against Ubuntu 16.04.1 LTS.
---
 conf/gns3_server.conf     | 61 +++++++++++++++++++++++++++++++++++++++
 init/gns3.service.systemd | 30 ++++++++++---------
 2 files changed, 77 insertions(+), 14 deletions(-)
 create mode 100644 conf/gns3_server.conf

diff --git a/conf/gns3_server.conf b/conf/gns3_server.conf
new file mode 100644
index 00000000..6bb80e0e
--- /dev/null
+++ b/conf/gns3_server.conf
@@ -0,0 +1,61 @@
+[Server]
+; IP where the server listen for connections
+host = 0.0.0.0
+; HTTP port for controlling the servers
+port = 3080
+
+; Option to enable SSL encryption
+ssl = False
+certfile=/home/gns3/.config/GNS3/ssl/server.cert
+certkey=/home/gns3/.config/GNS3/ssl/server.key
+
+; Path where devices images are stored
+images_path = /home/gns3/GNS3/images
+; Path where user projects are stored
+projects_path = /home/gns3/GNS3/projects
+
+; Option to automatically send crash reports to the GNS3 team
+report_errors = True
+
+; First console port of the range allocated to devices
+console_start_port_range = 2001
+; Last console port of the range allocated to devices
+console_end_port_range = 5000
+; First port of the range allocated for inter-device communication. Two ports are allocated per link.
+udp_start_port_range = 10000
+; Last port of the range allocated for inter-device communication. Two ports are allocated per link
+udp_start_end_range = 20000
+; uBridge executable location
+ubridge_path = /Applications/GNS3.app/Contents/Resources/ubridge
+
+; Option to enable HTTP authentication.
+auth = True
+; Username for HTTP authentication.
+user = gns3
+; Password for HTTP authentication.
+password = gns3
+
+[VPCS]
+; VPCS executable location
+vpcs_path = /usr/bin/vpcs
+
+[Dynamips]
+; Enable auxiliary console ports on IOS routers
+allocate_aux_console_ports = False
+mmap_support = True
+; Dynamips executable path
+dynamips_path = /usr/bin/dynamips
+sparse_memory_support = True
+ghost_ios_support = True
+
+[IOU]
+; iouyap executable path
+iouyap_path = /usr/bin/iouyap
+; Path of your .iourc file. If not provided, the file is searched in $HOME/.iourc
+iourc_path = /home/gns3/.iourc
+; Validate if the iourc license file is correct. If you turn this off and your licence is invalid IOU will not start and no errors will be shown.
+license_check = True
+
+[Qemu]
+; !! Remember to add the gns3 user to the KVM group, otherwise you will not have read / write permssions to /dev/kvm !!
+enable_kvm = True
diff --git a/init/gns3.service.systemd b/init/gns3.service.systemd
index 2a041a92..4439b349 100644
--- a/init/gns3.service.systemd
+++ b/init/gns3.service.systemd
@@ -1,14 +1,16 @@
-[Unit]
-Description=GNS3 server
-
-[Service]
-Type=forking
-Environment=statedir=/var/cache/gns3
-PIDFile=/var/run/gns3.pid
-ExecStart=/usr/local/bin/gns3server --log /var/log/gns3.log \
- --pid /var/run/gns3.pid --daemon
-Restart=on-abort
-User=gns3
-
-[Install]
-WantedBy=multi-user.target
+[Unit]
+Description=GNS3 server
+
+[Service]
+Type=forking
+User=gns3
+Group=gns3
+PermissionsStartOnly=true
+ExecStartPre=/bin/mkdir /var/run/gns3
+ExecStartPre=/bin/chown -R gns3:gns3 /var/run/gns3/
+ExecStart=/usr/share/gns3/gns3-server/bin/gns3server --log /var/log/gns3/gns3.log --pid /var/run/gns3/gns3.pid --daemon
+Restart=on-abort
+PIDFile=/var/run/gns3/gns3-server.pid
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file