5ead27394d
Included changes: * upstream repository has moved, URLs changed accordingly * journaldriver bumped to new upstream release The new release includes an important workaround for an issue that could cause log-forwarding to fail after service restarts due to invalid journal cursors being persisted.
113 lines
3.4 KiB
Nix
113 lines
3.4 KiB
Nix
# This module implements a systemd service for running journaldriver,
|
|
# a log forwarding agent that sends logs from journald to Stackdriver
|
|
# Logging.
|
|
#
|
|
# It can be enabled without extra configuration when running on GCP.
|
|
# On machines hosted elsewhere, the other configuration options need
|
|
# to be set.
|
|
#
|
|
# For further information please consult the documentation in the
|
|
# upstream repository at: https://github.com/tazjin/journaldriver/
|
|
|
|
{ config, lib, pkgs, ...}:
|
|
|
|
with lib; let cfg = config.services.journaldriver;
|
|
in {
|
|
options.services.journaldriver = {
|
|
enable = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Whether to enable journaldriver to forward journald logs to
|
|
Stackdriver Logging.
|
|
'';
|
|
};
|
|
|
|
logLevel = mkOption {
|
|
type = types.str;
|
|
default = "info";
|
|
description = ''
|
|
Log level at which journaldriver logs its own output.
|
|
'';
|
|
};
|
|
|
|
logName = mkOption {
|
|
type = with types; nullOr str;
|
|
default = null;
|
|
description = ''
|
|
Configures the name of the target log in Stackdriver Logging.
|
|
This option can be set to, for example, the hostname of a
|
|
machine to improve the user experience in the logging
|
|
overview.
|
|
'';
|
|
};
|
|
|
|
googleCloudProject = mkOption {
|
|
type = with types; nullOr str;
|
|
default = null;
|
|
description = ''
|
|
Configures the name of the Google Cloud project to which to
|
|
forward journald logs.
|
|
|
|
This option is required on non-GCP machines, but should not be
|
|
set on GCP instances.
|
|
'';
|
|
};
|
|
|
|
logStream = mkOption {
|
|
type = with types; nullOr str;
|
|
default = null;
|
|
description = ''
|
|
Configures the name of the Stackdriver Logging log stream into
|
|
which to write journald entries.
|
|
|
|
This option is required on non-GCP machines, but should not be
|
|
set on GCP instances.
|
|
'';
|
|
};
|
|
|
|
applicationCredentials = mkOption {
|
|
type = with types; nullOr path;
|
|
default = null;
|
|
description = ''
|
|
Path to the service account private key (in JSON-format) used
|
|
to forward log entries to Stackdriver Logging on non-GCP
|
|
instances.
|
|
|
|
This option is required on non-GCP machines, but should not be
|
|
set on GCP instances.
|
|
'';
|
|
};
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
systemd.services.journaldriver = {
|
|
description = "Stackdriver Logging journal forwarder";
|
|
script = "${pkgs.journaldriver}/bin/journaldriver";
|
|
after = [ "network-online.target" ];
|
|
wantedBy = [ "multi-user.target" ];
|
|
|
|
serviceConfig = {
|
|
Restart = "always";
|
|
DynamicUser = true;
|
|
|
|
# This directive lets systemd automatically configure
|
|
# permissions on /var/lib/journaldriver, the directory in
|
|
# which journaldriver persists its cursor state.
|
|
StateDirectory = "journaldriver";
|
|
|
|
# This group is required for accessing journald.
|
|
SupplementaryGroups = "systemd-journal";
|
|
};
|
|
|
|
environment = {
|
|
RUST_LOG = cfg.logLevel;
|
|
LOG_NAME = cfg.logName;
|
|
LOG_STREAM = cfg.logStream;
|
|
GOOGLE_CLOUD_PROJECT = cfg.googleCloudProject;
|
|
GOOGLE_APPLICATION_CREDENTIALS = cfg.applicationCredentials;
|
|
};
|
|
};
|
|
};
|
|
}
|