[Nix-dev] NixOps usage survey.

[Игорь Пашев]

I'm using NixOps in production, EC2, Hetzner, VBox with no issues.

Of course, commit NixOps state (JSON) in git with git-crypt. And this
wrapper for NixOps:

#!/usr/bin/env bash

set -euo pipefail

NIXPKGS=https://github.com/NixOS/nixpkgs-channels/archive/nixos-15.09.tar.gz
NIXOPS=${NIXOPS:-nixops}
export NIX_PATH=nixpkgs="$NIXPKGS":.

usage () {
cat <<USAGE
Usage: $0 <nixops command> <realm/spec.nix> [nixops options]
Examples:
  $0 deploy realms/vbox.nix
  $0 info realms/vbox.nix
  $0 deploy realms/dumpoo.nix --build-only
  $0 destroy realms/cats.nix --include slothcat
USAGE
}

fatal () {
  echo '** ERROR:' "$@" >&2
  usage >&2
  exit 1
}

if [ $# -lt 2 ]; then
  fatal "missing agruments."
fi

CMD="$1"; shift
REALM_NIX="$1"; shift

case "$REALM_NIX" in
  *realms/*.nix) REALM=$(basename "$REALM_NIX" .nix);;
  *) fatal "invalid realm spec: $REALM_NIX";;
esac

cd "$(dirname "$0")"

state="secrets/nixops-${REALM}.json"
db=$(mktemp -u "secrets/tmp.${REALM}.XXXXXX.nixops")

trap 'save' EXIT

save() {
  if [ -f "$db" ]; then
    "$NIXOPS" export -s "${db}" > "${state}.tmp"
    mv "${state}.tmp" "${state}"
    rm -f "$db"*
  fi
}

create() {
  "$NIXOPS" create -s "$db" -d "$REALM" "<realms/${REALM}.nix>"
}

case "$CMD" in
  create)
    [ ! -f "$state" ] || fatal "\`$state' already exists."
    create
    ;;
  *)
    [ -f "$state" ] || fatal "\`$state' does not exists."
    "$NIXOPS" import -s "${db}" < "$state"
    "$NIXOPS" "$CMD" -s "$db" -d "$REALM" "$@"
    ;;
esac



And makefile for development with vbox;

REALM = cats
override STATE = secrets/nixops-vbox-$(REALM).json

build: $(STATE)
    ./let deploy realms/vbox-$(REALM).nix --build-only

destroy:
    ./let $@ realms/vbox-$(REALM).nix --confirm

info deploy check send-keys start stop reboot: $(STATE)
    ./let $@ realms/vbox-$(REALM).nix

$(STATE):
    ./let create realms/vbox-$(REALM).nix

2016-09-05 19:01 GMT+03:00 Aloïs Cochard <alois.cochard at gmail.com>:
> Hi all,
>
> We are experimenting with NixOps and we are having great success. We do plan
> to use it for our development infrastructure, and it seems to be very
> promising.
>
> In the light of applying the same technology on our production stack, I'm
> curious to know how NixOps is used "for real"? Do you use it in production?
>
> Do you have some success story to share?
>
> Would love to know more about how it is used, the size of clusters, ...
>
> Thanks in advance!
>
> --
> Λ\oïs
> http://twitter.com/aloiscochard
> http://github.com/aloiscochard
>
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