1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
|
<!DOCTYPE html>
<html dir="ltr" lang="en">
<head>
<meta charset='utf-8'>
<title>1. Syslog-ng</title>
</head>
<body>
<a href="index.html">Tools Index</a>
<h1>1. Syslog-ng</h1>
<p>Syslog-ng offers more than sysklogd, for example, we
can log messages to different files based on pattern. It
is possible to have both syslog-ng and sysklog, I will
only configure syslog-ng and remove sysklog.</p>
<p>A simple way to "watch" log files is to use tail, with
exception of faillog, see man faillog for more information.</p>
<pre>
$ cd /var/log
$ sudo tail -f messages kernel cron auth
</pre>
<h2 id="install">1.1. Install syslog-ng</h2>
<pre>
$ prt-get depinst syslog-ng
</pre>
<h2 id="configure">1.4. Syslog-ng configuration</h2>
<p>Example of <a href="conf/etc/syslog-ng.conf">/etc/syslog-ng.conf</a>
that configures syslog-ng matching tools already installed in the system
and some that are part of <a href="../tools/index.html">tools</a>.</p>
<p>Change /etc/rc.conf, replace sysklog with syslog-ng;</p>
<pre>
#
# /etc/rc.conf: system configuration
#
FONT=default
KEYMAP=dvorak
TIMEZONE="Europe/Lisbon"
HOSTNAME=box
SYSLOG=syslog-ng
SERVICES=(lo net crond)
# End of file
</pre>
<p>Edit <a href="conf/etc/syslog-ng.conf">/etc/syslog-ng.conf</a> with your logging preferences;</p>
<pre>
@version: 3.25
@include "scl.conf"
# Syslog-ng configuration file, compatible with default Debian syslogd
# installation.
# First, set some global options.
options { chain_hostnames(off); flush_lines(0); use_dns(no); use_fqdn(no);
owner("root"); group("adm"); perm(0640); stats_freq(0);
bad_hostname("^gconfd$");
};
########################
# Sources
########################
# This is the default behavior of sysklogd package
# Logs may come from unix stream, but not from another machine.
#
source s_src {
system();
internal();
};
# If you wish to get logs from remote machine you should uncomment
# this and comment the above source line.
#
#source s_net { tcp(ip(127.0.0.1) port(1000)); };
########################
# Destinations
########################
# First some standard logfile
#
destination d_auth { file("/var/log/auth"); };
destination d_sudo { file("/var/log/sudo" ); };
destination d_cron { file("/var/log/cron"); };
destination d_daemon { file("/var/log/daemon"); };
destination d_kern { file("/var/log/kernel"); };
destination d_lpr { file("/var/log/lpr"); };
destination d_mail { file("/var/log/mail"); };
destination d_syslog { file("/var/log/syslog-ng"); };
destination d_user { file("/var/log/user"); };
destination d_uucp { file("/var/log/uucp"); };
# This files are the log come from the mail subsystem.
#
destination d_mailinfo { file("/var/log/mail.info"); };
destination d_mailwarn { file("/var/log/mail.warn"); };
destination d_mailerr { file("/var/log/mail.err"); };
# Logging for INN news system
#
destination d_newscrit { file("/var/log/news/news.crit"); };
destination d_newserr { file("/var/log/news/news.err"); };
destination d_newsnotice { file("/var/log/news/news.notice"); };
# Some 'catch-all' logfiles.
#
destination d_debug { file("/var/log/debug"); };
destination d_error { file("/var/log/error"); };
destination d_messages { file("/var/log/messages"); };
# Custom destinations
destination d_shorewall_warn { file ("/var/log/shorewall/warn"); };
destination d_shorewall_info { file ("/var/log/shorewall/info"); };
destination d_dnsmasq { file("/var/log/dnsmasq"); };
destination d_postgres { file("/var/log/pgsql"); };
destination d_mysql { file("/var/log/pgsql"); };
destination d_iptables { file("/var/log/iptables"); };
destination d_sshd { file("/var/log/sshd"); };
destination d_gitolite { file("/var/log/gitolite"); };
destination d_git-daemon { file("/var/log/git-daemon"); };
destination d_nginx_access { file("/var/log/nginx_access"); };
destination d_nginx_error { file("/var/log/nginx_error"); };
destination d_php_fpm { file("/var/log/php-fpm"); };
destination d_php { file("/var/log/php"); };
destination d_nginx_vhost { file("/var/log/nginx/vhost_access"); };
destination d_nginx_vhost_err { file("/var/log/nginx/vhost_error"); };
# The root's console.
#
destination d_console { usertty("root"); };
# Virtual console.
#
#destination d_console_all { file(`tty10`); };
destination console { usertty("root"); };
destination d_console_all { file("/dev/tty12" suppress(5)); };
destination xconsole { pipe("/dev/xconsole" suppress(5)); };
# The named pipe /dev/xconsole is for the nsole' utility. To use it,
# you must invoke nsole' with the -file' option:
#
# $ xconsole -file /dev/xconsole [...]
#
destination d_xconsole { pipe("/dev/xconsole"); };
# Send the messages to an other host
#
#destination d_net { tcp("127.0.0.1" port(1000) log_fifo_size(1000)); };
# Debian only
destination d_ppp { file("/var/log/ppp"); };
########################
# Filters
########################
# Here's come the filter options. With this rules, we can set which
# message go where.
filter f_dbg { level(debug); };
filter f_info { level(info); };
filter f_notice { level(notice); };
filter f_warn { level(warn); };
filter f_err { level(err); };
filter f_crit { level(crit .. emerg); };
filter f_debug { level(debug) and not facility(auth, authpriv, news, mail); };
filter f_error { level(err .. emerg) ; };
filter f_messages { level(info,notice,warn)
and not facility(auth,authpriv,cron,daemon,mail,news,local0); };
filter f_auth { facility(auth, authpriv) and not filter(f_debug); };
filter f_sudo { facility(auth, authpriv) and program("^sudo$"); };
filter f_cron { facility(cron) and not filter(f_debug);};
filter f_daemon { facility(daemon, local0)
and not filter(f_debug)
and not program("^php$")
and not program("^nginx_vhost$")
and not program("^nginx_vhost_err$");};
filter f_kern { facility(kern) and not filter(f_debug); };
filter f_lpr { facility(lpr) and not filter(f_debug); };
filter f_local { facility(local0, local1, local3, local4, local5,
local6, local7) and not filter(f_debug); };
filter f_mail { facility(mail) and not filter(f_debug); };
filter f_news { facility(news) and not filter(f_debug); };
filter f_syslog3 { program("^syslog-ng$");};
filter f_user { facility(user) and not filter(f_debug); };
filter f_uucp { facility(uucp) and not filter(f_debug); };
filter f_cnews { level(notice, err, crit) and facility(news); };
filter f_cother { level(debug, info, notice, warn) or facility(daemon, mail); };
filter f_ppp { facility(local2) and not filter(f_debug); };
filter f_console { level(warn .. emerg); };
# custom filters
filter f_dnsmasq { program("^dnsmasq$"); };
filter f_postgres { facility(local0) and program("^postgresql$"); };
filter f_sshd { facility(auth) and program("^sshd$"); };
filter f_iptables { facility(kern) and match("iptables" value("MESSAGE")) };
filter f_shorewall_warn { level (warn) and match ("Shorewall" value("MESSAGE")); };
filter f_shorewall_info {level (info) and match ("Shorewall" value("MESSAGE")); };
filter f_gitolite { program("^gitolite$"); };
filter f_git-daemon { program("^git-daemon$"); };
filter f_nginx_error { facility(daemon) and program("^nginx$"); };
filter f_nginx_vhost { facility(daemon) and program("^nginx_vhost$");};
filter f_nginx_vhost_err { facility(daemon) and program("^nginx_vhost_err$");};
filter f_php_fpm { facility(daemon) and program("^php-fpm$");};
filter f_php { facility(daemon) and program("^php$");};
# custom logs
log { source(s_src); filter(f_php_fpm); destination(d_php_fpm); };
log { source(s_src); filter(f_php); destination(d_php); };
log { source(s_src); filter(f_nginx_vhost); destination(d_nginx_vhost); };
log { source(s_src); filter(f_nginx_vhost_err); destination(d_nginx_vhost_err); };
log { source(s_src); filter(f_sshd); destination(d_sshd);};
log { source (s_src); filter (f_iptables); destination (d_iptables);};
log { source (s_src); filter (f_shorewall_warn); destination (d_shorewall_warn);};
log { source (s_src); filter (f_shorewall_info); destination (d_shorewall_info);};
log { source(s_src); filter(f_dnsmasq); destination(d_dnsmasq);};
log { source(s_src); filter(f_postgres); destination(d_postgres);};
log { source(s_src); filter(f_gitolite); destination(d_gitolite);};
log { source(s_src); filter(f_git-daemon); destination(d_git-daemon);};
log { source(s_src); filter(f_nginx_error); destination(d_nginx_error);};
########################
# Log paths
########################
log { source(s_src); filter(f_auth); destination(d_auth); };
log { source(s_src); filter(f_sudo); destination(d_sudo); };
log { source(s_src); filter(f_cron); destination(d_cron); };
log { source(s_src); filter(f_daemon); destination(d_daemon); };
log { source(s_src); filter(f_kern); destination(d_kern); };
log { source(s_src); filter(f_lpr); destination(d_lpr); };
log { source(s_src); filter(f_user); destination(d_user); };
log { source(s_src); filter(f_uucp); destination(d_uucp); };
log { source(s_src); filter(f_mail); destination(d_mail); };
log { source(s_src); filter(f_mail); filter(f_info); destination(d_mailinfo); };
log { source(s_src); filter(f_mail); filter(f_warn); destination(d_mailwarn); };
log { source(s_src); filter(f_mail); filter(f_err); destination(d_mailerr); };
log { source(s_src); filter(f_news); filter(f_crit); destination(d_newscrit); };
log { source(s_src); filter(f_news); filter(f_err); destination(d_newserr); };
log { source(s_src); filter(f_news); filter(f_notice); destination(d_newsnotice); };
#log { source(s_src); filter(f_cnews); destination(d_console_all); };
#log { source(s_src); filter(f_cother); destination(d_console_all); };
#log { source(s_src); filter(f_ppp); destination(d_ppp); };
log { source(s_src); filter(f_debug); destination(d_debug); };
log { source(s_src); filter(f_error); destination(d_error); };
log { source(s_src); filter(f_messages); destination(d_messages); };
log { source(s_src); filter(f_syslog3); destination(d_syslog); };
log { source(s_src); filter(f_console); destination(d_console_all);
destination(d_xconsole); };
log { source(s_src); filter(f_crit); destination(d_console); };
#
#
# All messages send to a remote site
#
#log { source(s_src); destination(d_net); };
###
# Include all config files in /etc/syslog-ng/conf.d/
###
@include "/etc/syslog-ng/conf.d/*.conf"
</pre>
<p>Restart daemon;</p>
<pre>
$ sudo sh /etc/rc.d/syslog-ng start
$ sudo sh /etc/rc.d/sysklogd stop
</pre>
<p>Description off global options used;</p>
<dl>
<dt>chain-hostnames()</dt>
<dd>Accepted values: yes | no</dd>
<dd>Default: no</dd>
<dd>Description: Enable or disable the chained hostname format.
If the log message is forwarded to the log server via a relay,
and the chain-hostnames() option is enabled, the relay adds its
own hostname to the hostname of the client, separated with
a / character.</dd>
<dt>create-dirs()</dt>
<dd>Accepted values: yes | no</dd>
<dd>Default: no</dd>
<dd>Description: Enable or disable directory creation for
destination files.</dd>
<dt>use-dns()</dt>
<dd>Type: yes, no, persist_only</dd>
<dd>Default: yes</dd>
<dd>Description: Enable or disable DNS usage. The persist_only
option attempts to resolve hostnames locally from file (for example
from /etc/hosts). The syslog-ng OSE application blocks on DNS
queries, so enabling DNS may lead to a Denial of Service attack.</dd>
<dt>stats_freq()</dt>
<dd>Accepted values: number</dd>
<dd>Default: 600</dd>
<dd>Description: The period between two STATS messages in seconds.
STATS are log messages sent by syslog-ng, containing statistics
about dropped log messages. Set to 0 to disable the STATS
messages.</dd>
<dt>perm()</dt>
<dd>Accepted values: permission value</dd>
<dd>Default: 0600</dd>
<dd>Description: The default permission for output files.
By default, syslog-ng changes the privileges of accessed files
(for example /dev/null) to root.root 0600. To disable modifying
privileges, use this option with the -1 value.</dd>
<dt>log-fifo-size()</dt>
<dd>Accepted values: number</dd>
<dd>Default: 10000</dd>
<dd>Description: The number of messages that the output queue
can store.</dd>
<dt>log-msg-size()</dt>
<dd>Accepted values: number</dd>
<dd>Default: 8192</dd>
<dd>Description: Maximum length of a message in bytes. This
length includes the entire message (the data structure and
individual fields). The maximal value that can be set is 268435456
bytes (256MB). For messages using the IETF-syslog message format
(RFC5424), the maximal size of the value of an SDATA field is
64kB.</dd>
<dt>flush-lines()</dt>
<dd>Type: number</dd>
<dd>Default: Use global setting.</dd>
<dd>Description: Specifies how many lines are flushed to a
destination at a time. The syslog-ng OSE application waits for
this number of lines to accumulate and sends them off in a single
batch. Increasing this number increases throughput as more
messages are sent in a single batch, but also increases message
latency.</dd>
</dl>
<a href="index.html">Tools Index</a>
<p>This is part of the Tribu System Documentation.
Copyright (C) 2020
Tribu Team.
See the file <a href="fdl-1.3-standalone.html">Gnu Free Documentation License</a>
for copying conditions.</p>
</body>
</html>
|