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https://github.com/GNS3/gns3-server
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Add option --without-kvm
Some cloud providers (example, AWS EC2 for non-metal instances) do not support nested virtualization, as well as some hypervisors (example, VirtualBox prior to 6.x, Hyper-V on AMD). Option `--without-kvm` can be used to disable hardware acceleration in these scenarios. Otherwise, user will receive error when trying to start Qemu-based devices. Commit also: replace `enable_kvm` and `require_kvm` with newer config options (`enable_hardware_acceleration` and `require_hardware_acceleration`); and do some code refactors. One can argue that, instead of prividing option `--without-kvm`, we should check if system supports KVM and enable/disable hardware acceleration accordingly. However, there is the case when the hypervisor supports nested virtualization, but feature is just disabled. The chosen approach for this case is to keep KVM enabled and let user known (user will eventually receive an error) so user can fix it. Otherwise, user might never know and suffer from performance degradation.
This commit is contained in:
Rarylson Freitas
parent
d2534d6fa0
commit
d926a713b9
@ -23,9 +23,10 @@
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function help {
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echo "Usage:" >&2
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echo "--with-openvpn: Install Open VPN" >&2
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echo "--with-openvpn: Install OpenVPN" >&2
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echo "--with-iou: Install IOU" >&2
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echo "--with-i386-repository: Add the i386 repositories required by IOU if they are not already available on the system. Warning: this will replace your source.list in order to use the official Ubuntu mirror" >&2
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echo "--without-kvm: Disable KVM, required if system do not support it (limitation in some hypervisors and cloud providers). Warning: only disable KVM if strictly necessary as this will degrade performance" >&2
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echo "--unstable: Use the GNS3 unstable repository"
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echo "--help: This help" >&2
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}
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@ -45,9 +46,10 @@ fi
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USE_VPN=0
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USE_IOU=0
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I386_REPO=0
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DISABLE_KVM=0
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UNSTABLE=0
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TEMP=`getopt -o h --long with-openvpn,with-iou,with-i386-repository,unstable,help -n 'gns3-remote-install.sh' -- "$@"`
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TEMP=`getopt -o h --long with-openvpn,with-iou,with-i386-repository,without-kvm,unstable,help -n 'gns3-remote-install.sh' -- "$@"`
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if [ $? != 0 ]
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then
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help
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@ -70,6 +72,10 @@ while true ; do
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I386_REPO=1
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shift
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;;
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--without-kvm)
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DISABLE_KVM=1
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shift
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;;
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--unstable)
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UNSTABLE=1
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shift
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@ -147,7 +153,7 @@ apt-get update
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log "Upgrade packages"
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apt-get upgrade --yes --force-yes -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold"
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log " Install GNS3 packages"
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log "Install GNS3 packages"
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apt-get install -y gns3-server
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log "Create user GNS3 with /opt/gns3 as home directory"
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@ -171,7 +177,7 @@ usermod -aG docker gns3
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if [ $USE_IOU == 1 ]
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then
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log "IOU setup"
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log "Setup IOU"
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dpkg --add-architecture i386
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apt-get update
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@ -204,10 +210,16 @@ configs_path = /opt/gns3/configs
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report_errors = True
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[Qemu]
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enable_kvm = True
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require_kvm = True
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enable_hardware_acceleration = True
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require_hardware_acceleration = True
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EOFC
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if [ $DISABLE_KVM == 1 ]
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then
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log "Disable KVM support"
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sed -i 's/hardware_acceleration = True/hardware_acceleration = False/g' /etc/gns3/gns3_server.conf
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fi
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chown -R gns3:gns3 /etc/gns3
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chmod -R 700 /etc/gns3
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@ -286,24 +298,15 @@ if [ $USE_VPN == 1 ]
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then
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log "Setup VPN"
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cat <<EOFSERVER > /etc/gns3/gns3_server.conf
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[Server]
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host = 172.16.253.1
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port = 3080
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images_path = /opt/gns3/images
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projects_path = /opt/gns3/projects
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report_errors = True
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log "Change GNS3 to listen on VPN interface"
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[Qemu]
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enable_kvm = True
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require_kvm = True
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EOFSERVER
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sed -i 's/host = 0.0.0.0/host = 172.16.253.1/' /etc/gns3/gns3_server.conf
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log "Install packages for Open VPN"
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log "Install packages for OpenVPN"
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apt-get install -y \
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openvpn \
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uuid \
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openvpn \
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uuid \
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dnsutils \
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nginx-light
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@ -329,7 +332,6 @@ echo "And remove this file with rm /etc/update-motd.d/70-openvpn"
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EOFMOTD
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chmod 755 /etc/update-motd.d/70-openvpn
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mkdir -p /etc/openvpn/
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[ -d /dev/net ] || mkdir -p /dev/net
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@ -385,7 +387,7 @@ status openvpn-status-1194.log
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log-append /var/log/openvpn-udp1194.log
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EOFUDP
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echo "Setup HTTP server for serving client certificate"
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log "Setup HTTP server for serving client certificate"
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mkdir -p /usr/share/nginx/openvpn/$UUID
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cp /root/client.ovpn /usr/share/nginx/openvpn/$UUID/$HOSTNAME.ovpn
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touch /usr/share/nginx/openvpn/$UUID/index.html
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@ -393,7 +395,7 @@ touch /usr/share/nginx/openvpn/index.html
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cat <<EOFNGINX > /etc/nginx/sites-available/openvpn
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server {
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listen 8003;
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listen 8003;
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root /usr/share/nginx/openvpn;
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}
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EOFNGINX
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@ -402,11 +404,13 @@ EOFNGINX
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service nginx stop
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service nginx start
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log "Restart OpenVPN"
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log "Restart OpenVPN and GNS3"
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set +e
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service openvpn stop
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service openvpn start
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service gns3 stop
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service gns3 start
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log "Download http://$MY_IP_ADDR:8003/$UUID/$HOSTNAME.ovpn to setup your OpenVPN client after rebooting the server"
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