depot/nix/docker/vault/default.nix

87 lines
2.6 KiB
Nix

# SPDX-FileCopyrightText: 2020 Luke Granger-Brown <depot@lukegb.com>
#
# SPDX-License-Identifier: Apache-2.0
{ lib, pkgs, depot, ... }:
let
vault = pkgs.vault-bin;
imageName = "europe-docker.pkg.dev/lukegb-vault/lukegb-vault/vault";
imageVersion = vault.version;
plugins = {
acme = { pkg = depot.nix.pkgs.vault-acme; type = "secret"; name = "acme"; };
};
pluginDrv = pkgs.runCommand "vault-plugins" {} ''
mkdir -p $out/libexec/vault
${lib.concatStrings (lib.mapAttrsToList (
execName: pluginAttrs: ''
cp ${pluginAttrs.pkg}/libexec/vault/${execName} $out/libexec/vault/${execName}
''
) plugins)}
'';
container = pkgs.dockerTools.buildImage rec {
name = imageName;
tag = imageVersion;
copyToRoot = pluginDrv;
# Using vault-bin because I want the vault UI.
config.Entrypoint = [ "${vault}/bin/vault" "server" "-config" "/etc/vault/config.hcl" ];
config.Env = [ "SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt" ];
} // {
plugins = pluginDrv;
};
updateVaultPluginsCmd = pkgs.runCommand "update-vault-plugins" {} ''
mkdir -p $out/bin
cat <<EOF >"$out/bin/update-vault-plugins"
#!${pkgs.runtimeShell}
set -o errexit
set -o nounset
set -o pipefail
export VAULT_ADDR=https://vault.int.lukegb.com/
vault token lookup >/dev/null || vault login -method=oidc role="admin" skip_browser=true
${lib.concatStrings (lib.mapAttrsToList (
execName: pluginAttrs: ''
echo '${execName}'
vault write '/sys/plugins/catalog/${pluginAttrs.type}/${pluginAttrs.name}' command="${execName}" sha256="$(sha256sum '${pluginAttrs.pkg}/libexec/vault/${execName}' | cut -f1 -d' ')"
''
) plugins)}
EOF
chmod +x "$out/bin/update-vault-plugins"
${pkgs.stdenv.shellDryRun} "$out/bin/update-vault-plugins"
${pkgs.shellcheck}/bin/shellcheck "$out/bin/update-vault-plugins"
'';
uploadCmd = pkgs.writeShellApplication {
name = "upload-vault-container";
runtimeInputs = with pkgs; [ skopeo google-cloud-sdk ];
text = ''
echo
echo Uploading ${imageName}:${imageVersion}
skopeo copy docker-archive:${container} docker://${imageName}:${imageVersion}
echo
echo Switching Cloud Run over
gcloud --project lukegb-vault run deploy vault-server --region europe-west1 --image ${imageName}:${imageVersion} --concurrency default
echo
echo Updating Vault SHA256 for plugins
${updateVaultPluginsCmd}/bin/update-vault-plugins
'';
};
in container // {
upload = uploadCmd;
updateVaultPlugins = updateVaultPluginsCmd;
}