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nixos/gitlab: Implement better script error handling

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Fail scripts on pipeline errors and propagate subshell errors.

If an error occurs in a subshell, including while trying to read a
secret file, we want that error to propagate to the main shell
context. That means we have to set the `inherit_errexit` option, which
allows errors from subshells to propagate to the outer shell. Also,
the subshell cannot run as part of another command, such as `export`,
since that will simply ignore the subshell exit status and only
respect `export`s exit status; first assigning the value to a variable
and then exporting it solves issue.
This commit is contained in:
talyz 2022-01-31 13:09:20 +01:00
parent 95069d76d3
commit b65b9bf73c
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GPG Key ID: 2DED2151F4671A2B
1 changed files with 13 additions and 9 deletions
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22
nixos/modules/services/misc/gitlab.nix
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@ -1129,8 +1129,8 @@ in {
ExecStartPre = let
preStartFullPrivileges = ''
shopt -s dotglob nullglob
set -eu
set -o errexit -o pipefail -o nounset
shopt -s dotglob nullglob inherit_errexit
chown --no-dereference '${cfg.user}':'${cfg.group}' '${cfg.statePath}'/*
if [[ -n "$(ls -A '${cfg.statePath}'/config/)" ]]; then
@ -1140,7 +1140,8 @@ in {
in "+${pkgs.writeShellScript "gitlab-pre-start-full-privileges" preStartFullPrivileges}";
ExecStart = pkgs.writeShellScript "gitlab-config" ''
set -eu
set -o errexit -o pipefail -o nounset
shopt -s inherit_errexit
umask u=rwx,g=rx,o=
@ -1169,7 +1170,8 @@ in {
rm -f '${cfg.statePath}/config/database.yml'
${if cfg.databasePasswordFile != null then ''
export db_password="$(<'${cfg.databasePasswordFile}')"
db_password="$(<'${cfg.databasePasswordFile}')"
export db_password
if [[ -z "$db_password" ]]; then
>&2 echo "Database password was an empty string!"
@ -1193,10 +1195,11 @@ in {
rm -f '${cfg.statePath}/config/secrets.yml'
export secret="$(<'${cfg.secrets.secretFile}')"
export db="$(<'${cfg.secrets.dbFile}')"
export otp="$(<'${cfg.secrets.otpFile}')"
export jws="$(<'${cfg.secrets.jwsFile}')"
secret="$(<'${cfg.secrets.secretFile}')"
db="$(<'${cfg.secrets.dbFile}')"
otp="$(<'${cfg.secrets.otpFile}')"
jws="$(<'${cfg.secrets.jwsFile}')"
export secret db otp jws
jq -n '{production: {secret_key_base: $ENV.secret,
otp_key_base: $ENV.otp,
db_key_base: $ENV.db,
@ -1230,7 +1233,8 @@ in {
RemainAfterExit = true;
ExecStart = pkgs.writeShellScript "gitlab-db-config" ''
set -eu
set -o errexit -o pipefail -o nounset
shopt -s inherit_errexit
umask u=rwx,g=rx,o=
initial_root_password="$(<'${cfg.initialRootPasswordFile}')"