Create Droplet via API then get public IP address and store as a variable

Question

Hi trying to create a bash script that creates a droplet, then once created gets the IP address of that droplet and store it as a variable to I used that IP address throughout the remaining bash script.

Any pointers on getting the IP and storing as a variable would be very much appreciated.

Bobby · Accepted Answer

Hello, You could do something like this: First get create the new Droplet: #!/bin/bash # Here make sure to update your Token and the other Droplet details like the region, your SSH key and etc. new_droplet=$(curl -X POST -H "Content-Type: application/json" -H "Authorization: Bearer b7d03a6947b217efb6f3ec3bd3504582" -d '{"name":"example.com","region":"nyc3","size":"s-1vcpu-1gb","image":"ubuntu-16-04-x64","ssh_keys":[107149],"backups":false,"ipv6":true,"user_data":null,"private_networking":null,"volumes": null,"tags":["web"]}' "https://api.digitalocean.com/v2/droplets") ... Update the details accordingly. The response that you would get would look something like this: { "droplet": { "id": 3164494, "name": "example.com", "memory": 1024, "vcpus": 1, "disk": 25, "locked": true, "status": "new", "kernel": { "id": 2233, "name": "Ubuntu 14.04 x64 vmlinuz-3.13.0-37-generic", "version": "3.13.0-37-generic" }, "created_at": "2014-11-14T16:36:31Z", "features": [ "virtio" ], "backup_ids": [ ], "snapshot_ids": [ ], "image": { }, "volume_ids": [ ], "size": { }, "size_slug": "s-1vcpu-1gb", "networks": { }, "region": { }, "tags": [ "web" ] }, "links": { "actions": [ { "id": 36805096, "rel": "create", "href": "https://api.digitalocean.com/v2/actions/36805096" } ] } } From here we could grab the Droplet ID with the jq command. Make sure that you have jq installed: sudo apt-get update sudo apt-get install jq We could select the Droplet ID only from the output above and store it in a variable: new_droplet_id=$(echo $new_droplet | jq .droplet.id) Then we could use the Droplet ID and with another request get the Droplet’s IP address: new_droplet_details=$(curl -X GET -H "Content-Type: application/json" -H "Authorization: Bearer b7d03a6947b217efb6f3ec3bd3504582" "https://api.digitalocean.com/v2/droplets/${new_droplet_id}") The output of the curl command would look something like this: { "droplet": { "id": 3164494, "name": "example.com", "memory": 1024, "vcpus": 1, "disk": 25, "locked": false, "status": "active", "kernel": { "id": 2233, "name": "Ubuntu 14.04 x64 vmlinuz-3.13.0-37-generic", "version": "3.13.0-37-generic" }, "created_at": "2014-11-14T16:36:31Z", "features": [ "ipv6", "virtio" ], "backup_ids": [ ], "snapshot_ids": [ 7938206 ], "image": { "id": 6918990, "name": "14.04 x64", "distribution": "Ubuntu", "slug": "ubuntu-16-04-x64", "public": true, "regions": [ "nyc1", "ams1", "sfo1", "nyc2", "ams2", "sgp1", "lon1", "nyc3", "ams3", "nyc3" ], "created_at": "2014-10-17T20:24:33Z", "type": "snapshot", "min_disk_size": 20, "size_gigabytes": 2.34 }, "volume_ids": [ ], "size": { }, "size_slug": "s-1vcpu-1gb", "networks": { "v4": [ { "ip_address": "104.131.186.241", "netmask": "255.255.240.0", "gateway": "104.131.176.1", "type": "public" } ], "v6": [ { "ip_address": "2604:A880:0800:0010:0000:0000:031D:2001", "netmask": 64, "gateway": "2604:A880:0800:0010:0000:0000:0000:0001", "type": "public" } ] }, "region": { "name": "New York 3", "slug": "nyc3", "sizes": [ "s-1vcpu-1gb", "s-1vcpu-2gb", "s-1vcpu-3gb", "s-2vcpu-2gb", "s-3vcpu-1gb", "s-2vcpu-4gb", "s-4vcpu-8gb", "s-6vcpu-16gb", "s-8vcpu-32gb", "s-12vcpu-48gb", "s-16vcpu-64gb", "s-20vcpu-96gb", "s-24vcpu-128gb", "s-32vcpu-192gb" ], "features": [ "virtio", "private_networking", "backups", "ipv6", "metadata" ], "available": true }, "tags": [ ] } } Again with the jq command we could select the IPv4 address only: new_droplet_ip=$(echo $new_droplet_details | jq .droplet.networks.v4[].ip_address) The whole script would look something like this: #!/bin/bash # Here make sure to update your Token and the other Droplet details like the region, your SSH key and etc. new_droplet=$(curl -X POST -H "Content-Type: application/json" -H "Authorization: Bearer b7d03a6947b217efb6f3ec3bd3504582" -d '{"name":"example.com","region":"nyc3","size":"s-1vcpu-1gb","image":"ubuntu-16-04-x64","ssh_keys":[107149],"backups":false,"ipv6":true,"user_data":null,"private_networking":null,"volumes": null,"tags":["web"]}' "https://api.digitalocean.com/v2/droplets") new_droplet_id=$(echo $new_droplet | jq .droplet.id) new_droplet_details=$(curl -X GET -H "Content-Type: application/json" -H "Authorization: Bearer ${api_key}" "https://api.digitalocean.com/v2/droplets/${new_droplet_id}") new_droplet_ip=$(echo $new_droplet_details | jq .droplet.networks.v4[].ip_address) echo "Your new Droplet's IP address is: ${new_droplet_ip}" The output that you would see at the end would look something like this: Your new Droplet's IP address is: "159.65.191.52" Of course, feel free to enchant the script.Hope that this helps!Regards,Bobby

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Create Droplet via API then get public IP address and store as a variable

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