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Nixops deployment

Nixops manual

Virtualbox

  • If you delete, sometimes nixops fails to destroy vbox disks. Do NixOS/nixops#1173 to remove the conflicting disks.

  • Sometimes virtualbox service fails on first deploy. Do nixops deploy -d vm --force-reboot or open the VirtualBox UI's media manager and delete the disks to clear it up.

  • Deploy like this

    nixops create -d vm net-vm.nix
nixops deploy --force-reboot

AWS

Make a credentials file $FILE with a cbcast profile:

[cbcast]
aws_access_key_id = AKIABOGUSACCESSKEY
aws_secret_access_key = BOGUSSECRETACCESSKEY

Run nixops with an envvar to locate $FILE.

export AWS_SHARED_CREDENTIALS_FILE=$FILE

Make sure you have no conflicting files or profiles (such as ~/.ec2-keys or ~/.aws/credentials containing a cbcast profile).

  • Deploy like this 
    nixops create -d aws net-aws.nix
nixops deploy -d aws
  • Sometimes the default disk size of the nixos ami is small and breaks on the first deploy (sometimes first deploy has to upgrade nixos to the one we're pinned on, as well as upload haskell libraries). 
    [root@ip-172-31-2-66:~]# df -h .
Filesystem                Size  Used Avail Use% Mounted on
/dev/disk/by-label/nixos  3.0G  1.4G  1.5G  49% /
    • Made it bigger in nix code 
      [root@ip-172-31-10-72:~]# df -h .
Filesystem                Size  Used Avail Use% Mounted on
/dev/disk/by-label/nixos  7.9G  1.4G  6.1G  19% /
    • After initial deployment 
      [root@ip-172-31-10-72:~]# df -h .
Filesystem                Size  Used Avail Use% Mounted on
/dev/disk/by-label/nixos  7.9G  6.3G  1.2G  85% /