/usr/lib/python2.7/dist-packages/cloudinit/config/cc_rsyslog.py is in cloud-init 0.7.6~bzr976-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (C) 2009-2010 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from cloudinit import util
DEF_FILENAME = "20-cloud-config.conf"
DEF_DIR = "/etc/rsyslog.d"
def handle(name, cfg, cloud, log, _args):
# rsyslog:
# - "*.* @@192.158.1.1"
# - content: "*.* @@192.0.2.1:10514"
# - filename: 01-examplecom.conf
# content: |
# *.* @@syslogd.example.com
# process 'rsyslog'
if not 'rsyslog' in cfg:
log.debug(("Skipping module named %s,"
" no 'rsyslog' key in configuration"), name)
return
def_dir = cfg.get('rsyslog_dir', DEF_DIR)
def_fname = cfg.get('rsyslog_filename', DEF_FILENAME)
files = []
for i, ent in enumerate(cfg['rsyslog']):
if isinstance(ent, dict):
if not "content" in ent:
log.warn("No 'content' entry in config entry %s", i + 1)
continue
content = ent['content']
filename = ent.get("filename", def_fname)
else:
content = ent
filename = def_fname
filename = filename.strip()
if not filename:
log.warn("Entry %s has an empty filename", i + 1)
continue
if not filename.startswith("/"):
filename = os.path.join(def_dir, filename)
# Truncate filename first time you see it
omode = "ab"
if filename not in files:
omode = "wb"
files.append(filename)
try:
contents = "%s\n" % (content)
util.write_file(filename, contents, omode=omode)
except Exception:
util.logexc(log, "Failed to write to %s", filename)
# Attempt to restart syslogd
restarted = False
try:
# If this config module is running at cloud-init time
# (before rsyslog is running) we don't actually have to
# restart syslog.
#
# Upstart actually does what we want here, in that it doesn't
# start a service that wasn't running already on 'restart'
# it will also return failure on the attempt, so 'restarted'
# won't get set.
log.debug("Restarting rsyslog")
util.subp(['service', 'rsyslog', 'restart'])
restarted = True
except Exception:
util.logexc(log, "Failed restarting rsyslog")
if restarted:
# This only needs to run if we *actually* restarted
# syslog above.
cloud.cycle_logging()
# This should now use rsyslog if
# the logging was setup to use it...
log.debug("%s configured %s files", name, files)
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