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221 lines
7.8 KiB
221 lines
7.8 KiB
#! /usr/bin/python
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#
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# analog: Remote logging manager for the Red Hat Installer
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#
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# Copyright (C) 2010
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# Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author: Ales Kozumplik <akozumpl@redhat.com>
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#
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from __future__ import print_function
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import getpass
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import errno
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import optparse
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import os
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import os.path
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import signal
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import sys
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DEFAULT_PORT = 6080
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DEFAULT_ANALOG_DIR = '.analog'
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USAGE = "%prog [options] <log directory root>"
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HINT = "/sbin/rsyslogd -c 5 -f %(conf)s -i %(pid)s"
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PID_LOCATION = "/tmp/%(username)s/rsyslogd_%(unique_id)s.pid"
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INPUT_TCP_TEMPLATE = "$InputTCPServerRun %(port)s"
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INPUT_SOCKET_TEMPLATE = "$AddUnixListenSocket %(socket)s"
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RSYSLOG_TEMPLATE ="""
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#### MODULES ####
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# Provides TCP syslog reception
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$ModLoad imtcp.so
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$ModLoad imuxsock
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$OmitLocalLogging on
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$SystemLogRateLimitInterval 0
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%(input_directive)s
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#### GLOBAL DIRECTIVES ####
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# Use default timestamp format
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$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
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# File syncing capability is disabled by default. This feature is usually not
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# required, not useful and an extreme performance hit.
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#$ActionFileEnableSync on
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#### RULES ####
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$template anaconda_justmsg, "%%msg%%\\n"
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$template anaconda_debug, "%%rawmsg%%\\n"
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$template anaconda_syslog, "%%timestamp:8:$:date-rfc3164%%,%%timestamp:1:3:date-subseconds%% %%syslogseverity-text:::uppercase%% %%programname%%:%%msg%%\\n"
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$template path_syslog, "%(directory)s/%(subdirectory)s/syslog
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$template path_anaconda, "%(directory)s/%(subdirectory)s/anaconda.log"
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$template path_anaconda_tb, "%(directory)s/%(subdirectory)s/anaconda-tb-all.log"
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$template path_program, "%(directory)s/%(subdirectory)s/program.log"
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$template path_storage, "%(directory)s/%(subdirectory)s/storage.log"
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$template path_xserver, "%(directory)s/%(subdirectory)s/X.log"
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$template path_ifcfg, "%(directory)s/%(subdirectory)s/ifcfg.log"
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$template path_sysimage, "%(directory)s/%(subdirectory)s/install.log.syslog"
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*.* %(directory)s/debug_all.log;anaconda_debug
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kern.*;\\
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daemon.*;\\
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user.info;\\
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authpriv.* ?path_syslog;anaconda_syslog
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:programname, isequal, "anaconda" ?path_anaconda;anaconda_syslog
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:programname, isequal, "anaconda-tb" ?path_anaconda_tb;anaconda_justmsg
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:programname, isequal, "program" ?path_program;anaconda_syslog
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:programname, isequal, "storage" ?path_storage;anaconda_syslog
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:programname, isequal, "xserver" ?path_xserver;anaconda_justmsg
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:programname, isequal, "ifcfg" ?path_ifcfg;anaconda_syslog
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:hostname, isequal, "sysimage" ?path_sysimage;anaconda_syslog
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# discard those that we logged
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:programname, isequal, "rsyslogd" ~
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:programname, isequal, "anaconda" ~
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:programname, isequal, "anaconda-tb" ~
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:programname, isequal, "program" ~
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:programname, isequal, "storage" ~
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:programname, isequal, "xserver" ~
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:programname, isequal, "ifcfg" ~
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:hostname, isequal, "sysimage" ~
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kern.* ~
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daemon.* ~
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authpriv.* ~
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user.info ~
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# dump the rest
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*.* %(directory)s/debug_unknown_source.log;anaconda_debug
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"""
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# option parsing
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class OptParserError(Exception):
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def __str__(self):
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return self.args[0]
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@property
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def parser(self):
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return self.args[1]
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def absolute_path(input_path):
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"""
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If the path doesn't start with a slash, consider it relative to the current
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working directory.
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Returns aboslute path of 'path'.
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"""
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path = os.path.join(os.getcwd(), input_path)
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path = os.path.abspath(path)
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return path
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def build_unique_id(options):
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unique_id = options.unix_socket or str(options.port)
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# could be full path to the socket, strip everything before the last slash
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unique_id = unique_id.rsplit('/', 2)[-1]
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return unique_id
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def get_opts():
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parser = optparse.OptionParser(usage=USAGE,
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add_help_option=False)
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parser.add_option ('-h', '--help', action="callback", callback=help_and_exit,
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help="Display this help")
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parser.add_option ('-o', type="string", dest="output",
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default=None,
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help="Output file")
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parser.add_option ('-p', type="int", dest="port",
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default=DEFAULT_PORT,
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help="TCP port the rsyslog daemon will listen on")
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parser.add_option ('-s', action="store_true", dest="stdout",
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default=False,
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help="Generate bash command to run rsyslogd on stdout (only valid when -o is also specified)")
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parser.add_option ('-u', type="string", dest="unix_socket",
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default=None,
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help="Unix socket the rsyslog daemon will listen on. Using this option turns off listening for TCP connections.")
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(options, args) = parser.parse_args()
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if len(args) < 1:
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raise OptParserError("no log root directory given", parser)
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if options.stdout and not options.output:
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raise OptParserError("-s only valid with -o", parser)
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options.log_root = absolute_path(args[0])
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if options.unix_socket:
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options.unix_socket = absolute_path(options.unix_socket)
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args = args[1:]
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return (options, args)
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def help_and_exit(option, opt, value, parser):
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parser.print_help()
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sys.exit(0)
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def generate_rsyslog_config(options, unique_id):
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values = {
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"input_directive" : INPUT_TCP_TEMPLATE % {'port' : options.port},
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"directory" : options.log_root,
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"subdirectory" : "%FROMHOST-IP%"
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}
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if options.unix_socket:
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values["input_directive"] = INPUT_SOCKET_TEMPLATE % {'socket' : options.unix_socket}
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values["subdirectory"] = unique_id
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config = RSYSLOG_TEMPLATE % values
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return config
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def pid_location(unique_id):
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# find the target location
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name = getpass.getuser()
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values = {
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"username" : name,
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"unique_id" : unique_id
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}
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location = PID_LOCATION % values
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# now make sure the directory exists
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directory = os.path.dirname(location)
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if not os.path.exists(directory):
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os.mkdir(directory)
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return location
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if __name__ == "__main__":
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try:
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(options, args) = get_opts()
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except OptParserError as exc:
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exc.parser.error(str(exc))
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sys.exit(1)
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unique_id = build_unique_id(options)
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config = generate_rsyslog_config(options, unique_id)
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if options.output:
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options.output = os.path.abspath(options.output)
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try:
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with open(options.output, 'w') as file:
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file.write(config)
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except IOError as e:
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print("Can't write into file %s" % options.output, file=sys.stderr)
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sys.exit(1)
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if options.stdout:
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pid = pid_location(unique_id)
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print(HINT % {
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"conf" : options.output,
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"pid" : pid
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})
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else:
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print(config)
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