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# GNS3-server
# GNS3 server repository
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This is the GNS3 server repository.
The GNS3 server manages emulators such as Dynamips, VirtualBox or Qemu/KVM.
The GNS3 server manages emulators and other virtualization software such as Dynamips, Qemu/KVM, Docker, VPCS, VirtualBox and VMware Workstation.
Clients like the [GNS3 GUI](https://github.com/GNS3/gns3-gui/) and the [GNS3 Web UI](https://github.com/GNS3/gns3-web-ui>) control the server using a HTTP REST API.
## Software dependencies
## Installation
In addition to Python dependencies listed in a section below, other software may be required, recommended or optional.
These instructions are for using GNS3, please see below for development.
* [uBridge](https://github.com/GNS3/ubridge/) is required, it interconnects the nodes.
* [Dynamips](https://github.com/GNS3/dynamips/) is required for running IOS routers (using real IOS images) as well as the internal switches and hubs.
* [VPCS](https://github.com/GNS3/vpcs/) is recommended, it is a builtin node simulating a very simple computer to perform connectivity tests using ping, traceroute etc.
* Qemu is strongly recommended on Linux, as most node types are based on Qemu, for example Cisco IOSv and Arista vEOS.
* libvirt is recommended (Linux only), as it's needed for the NAT cloud.
* Docker is optional (Linux only), some nodes are based on Docker.
* mtools is recommended to support data transfer to/from QEMU VMs using virtual disks.
* i386-libraries of libc and libcrypto are optional (Linux only), they are only needed to run IOU based nodes.
### Windows & macOS
### Docker support
Please use our [Windows installer or DMG package](https://gns3.com/software/download) to install the stable build along with the GNS3 VM.
Note that as of GNS3 version above 3.0, you must run the server using the GNS3 VM or on a Linux system (remote, cloud or virtual machine).
Docker support needs the script program (`bsdutils` or `util-linux` package), when running a docker VM and a static busybox during installation (python3 setup.py install / pip3 install / package creation).
### Linux
## Branches
#### Ubuntu based distributions
### master
We build and test packages for actively supported Ubuntu versions.
Other distros based on Ubuntu, like Mint, should also be supported.
master is the next stable release, you can test it in your day-to -day activities.
Bug fixes or small improvements pull requests go here.
Packages can be installed from our Personal Package Archives (PPA) repository:
3.x
Development brand for the next major release
```shell
sudo apt update
sudo apt install software-properties-common
sudo add-apt-repository ppa:gns3/ppa
sudo apt update
sudo apt install gns3-gui gns3-server
```
**Never** use this branch for production. Pull requests for major new features go here.
#### Other Linux distributions
## Linux
GNS3 is perhaps packaged for your distribution:
GNS3 is often packaged for other distributions by third-parties:
* [Gentoo](https://packages.gentoo.org/package/net-misc/gns3-server)
* [Alpine](https://pkgs.alpinelinux.org/package/v3.10/community/x86_64/gns3-server)
* [NixOS](https://search.nixos.org/packages?channel=21.11&from=0&size=50&sort=relevance&type=packages&query=gns3-server)
#### PyPi
### Linux (Debian based)
You may use PyPi in case no package is provided, or you would like to do a manual installation:
The following instructions have been tested with Ubuntu and Mint.
You must be connected to the Internet in order to install the dependencies.
### Dependencies:
- Python >= 3.6, setuptools and the ones listed in [requirements.txt](https://github.com/GNS3/gns3-server/blob/3.0/requirements.txt>)
The following commands will install some of these dependencies:
* https://pypi.org/project/gns3-server/
* https://pypi.org/project/gns3-gui/
```shell
sudo apt-get install python3-setuptools
python3 -m pip install gns3-gui
python3 -m pip install gns3-server
```
Finally, these commands will install the server as well as the rest of the dependencies:
The downside of this method is you will have to manually install all dependencies (see below).
Please see our [documentation](https://docs.gns3.com/docs/getting-started/installation/linux) for more details.
### Software dependencies
In addition to Python dependencies, other software may be required, recommended or optional.
* [uBridge](https://github.com/GNS3/ubridge/) is required, it interconnects the nodes.
* [Dynamips](https://github.com/GNS3/dynamips/) is required for running IOS routers (using real IOS images) as well as the internal switches and hubs.
* [VPCS](https://github.com/GNS3/vpcs/) is recommended, it is a builtin node simulating a very simple computer to perform connectivity tests using ping, traceroute etc.
* Qemu is strongly recommended as most node types are based on Qemu, for example Cisco IOSv and Arista vEOS.
* libvirt is recommended as it's needed for the NAT cloud.
* Docker is optional, some nodes are based on Docker.
* mtools is recommended to support data transfer to/from QEMU VMs using virtual disks.
* i386-libraries of libc and libcrypto are optional, they are only needed to run IOU based nodes.
Note that Docker needs the script program (`bsdutils` or `util-linux` package), when running a Docker VM and a static busybox during installation (python3 setup.py install / pip3 install / package creation).
## Development
### Setting up
These commands will install the server as well as all Python dependencies:
```shell
cd gns3-server-master
git clone https://github.com/GNS3/gns3-server
cd gns3-server
git checkout 3.0
python3 -m venv venv-gns3server
source venv-gns3server/bin/activate
sudo python3 setup.py install
python3 setup.py install
python3 -m gns3server --local
```
To run tests use:
You will have to manually install other software dependencies (see above), for Dynamips, VPCS and uBridge the easiest is to install from our PPA.
```shell
python3 -m pytest tests
```
### Docker container
## Docker container
For development, you can run the GNS3 server in a container
Alternatively, you can run the GNS3 server in a container
```shell
bash scripts/docker_dev_server.sh
```
## Run as daemon (Unix only)
You will find init sample scripts for various systems
inside the init directory.
Useful options:
* `--daemon`: start process as a daemon
* `--log logfile`: store output in a logfile
* `--pid pidfile`: store the pid of the running process in a file and prevent double execution
All init scripts require the creation of a GNS3 user. You can change it to another user.
```shell
sudo adduser gns3
```
### systemd
You need to copy init/gns3.service.systemd to /lib/systemd/system/gns3.service
```shell
sudo chown root /lib/systemd/system/gns3.service
sudo systemctl start gns3
```
## Windows
Please use our [Windows installer](https://community.gns3.com/software/download) to install the stable build along with the GNS3 VM
### Mac OS X
Please use our [DMG package](https://community.gns3.com/software/download) for a simple installation along with the GNS3 VM (VMware Fusion is recommended)
## SSL
If you want enable SSL support on GNS3 you can generate a self-signed certificate:
```shell
bash gns3server/cert_utils/create_cert.sh
```
This command will put the files in ~/.config/GNS3/ssl
After you can start the server in SSL mode with:
```shell
python gns3server/main.py --certfile ~/.config/GNS3/ssl/server.cert --certkey ~/.config/GNS3/ssl/server.key --ssl
```
Or in your gns3_server.conf by adding in the Server section:
```ini
[Server]
certfile=/Users/noplay/.config/GNS3/ssl/server.cert
certkey=/Users/noplay/.config/GNS3/ssl/server.key
ssl=True
```
### Running tests
First, install the development dependencies
First, install the development dependencies:
```shell
python3 -m pip install -r dev-requirements.txt
```
Then run the tests using pytest
Then run the tests using pytest:
```shell
python3 -m pytest -vv tests/
```
## Security issues
### API documentation
Please contact us at security@gns3.net
The API documentation can be accessed when running the server locally:
* On `http://IP:PORT/docs` to see with Swagger UI (i.e. `http://localhost:3080/docs`)
* On `http://IP:PORT/redoc` to see with ReDoc (i.e. `http://localhost:3080/redoc`)
The documentation can also be viewed [online](http://apiv3.gns3.net) however it may not be the most up-to-date version since it needs manually synchronization with the current code. Also, you cannot use this to interact with a GNS3 server.
### Branches
#### master
master is the next stable release, you can test it in your day-to -day activities.
Bug fixes or small improvements pull requests go here.
3.x development brand for the next major release.
**Never** use this branch for production. Pull requests for major new features go here.