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# vi: ts=4 expandtab syntax=python
#
# Copyright (C) 2009-2010 Canonical Ltd.
#
# Author: Scott Moser <scott.moser@canonical.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 cloudinit
import logging
import cloudinit.util as util
import traceback
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:
return
def_dir = cfg.get('rsyslog_dir', DEF_DIR)
def_fname = cfg.get('rsyslog_filename', DEF_FILENAME)
files = []
elst = []
for ent in cfg['rsyslog']:
if isinstance(ent, dict):
if not "content" in ent:
elst.append((ent, "no 'content' entry"))
continue
content = ent['content']
filename = ent.get("filename", def_fname)
else:
content = ent
filename = def_fname
if not filename.startswith("/"):
filename = "%s/%s" % (def_dir, filename)
omode = "ab"
# truncate filename first time you see it
if filename not in files:
omode = "wb"
files.append(filename)
try:
util.write_file(filename, content + "\n", omode=omode)
except Exception as e:
log.debug(traceback.format_exc(e))
elst.append((content, "failed to write to %s" % filename))
# need 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 as e:
elst.append(("restart", str(e)))
if restarted:
# this only needs to run if we *actually* restarted
# syslog above.
cloudinit.logging_set_from_cfg_file()
log = logging.getLogger()
log.debug("rsyslog configured %s" % files)
for e in elst:
log.warn("rsyslog error: %s\n" % ':'.join(e))
return
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