In order to be able to connect to the internet with you instances (and make it possible to reach your instances on their floating IPs) there are a small number of things you need to do first:
- Create a router with an external gateway to the public_v4 network
- Create a network to which your instances will connect
- Connect the network to the router
- Attach the instances you create to the new network
In most cases you only need to do this once since your instances can share the same network.
Create a router¶
First head to Network->Routers in the navigation menu:
Click "Create Router" and you will be presented with the following dialogue:
Name your router anything unique and make sure to pick "public_v4" under the "External Network" drop-down. Click "Create Router".
Create a network¶
Navigate to Network->Networks in the navigation menu and click "Create Network"
You will be presented with the following dialogue.
Name your network anything unique and press "Next". You will now instead be presented with the "Create Subnet" dialogue. This is where you pick which IP-network that you be configured on you network:
Just pick a private network which is not taken in your project and provide the netmask with the slash-notation. Cllick next.
The next dialogue will present you with some optional settings. Since the internal DNS resolver has shown to be slow at times it is highly recommended to provide an external resolver. This could be Googles (18.104.22.168) or another resolver of you liking. Click "Create".
Connect the network to your router¶
Navigate to Network->Routers again and click the title of you router:
You will be presented with the following:
Click the "Interface" tab and the "Add Interface":
Pick the subnet you created earlier in the drop-down box. If you leave the "IP Address" field empty the router will get the first address in the network (which is probably what you want). Click "Submit".
You now have created a router and a network to which you can attach your instances for network connectivity.
Attach instances to your network¶
Go to Compute->Instances and click "Launch Instance". Under "Networks" make sure you pick the network you created. If you launch the instance and attach a floating IP and Go to Compute->Instances and click "Launch Instance". Under "Networks" make sure you pick the network you created. Make sure to set up keypairs correctly. If you launch the instance and set up security groups and floating IP as described in here you should now be able to connect to you instance.