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
|
<!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="eventlog">1.1. Install event log</h2>
<pre>
$ mkdir eventlog
$ vim Pkgfile
</pre>
<pre>
# Description: replacement of the simple syslog() API
# URL: http://www.balabit.com/network-security/syslog-ng/opensource-logging-system
# Maintainer: Thomas Penteker, tek at serverop dot de
#
# Depends on:
name=eventlog
version=0.2.12
release=1
source=(http://ftp.uni-erlangen.de/pub/mirrors/gentoo/distfiles/${name}_${version}.tar.gz)
build() {
cd $name-$version
./configure \
--prefix=/usr \
--disable-nls \
--mandir=/usr/man
make && make DESTDIR=$PKG install
rm -rf $PKG/usr/doc
}
</pre>
<pre>
$ fakeroot pkgmk -d
$ sudo pkgadd /usr/ports/packages/eventlog#0.2.12-1.pkg.tar.gz
</pre>
<h2 id="install">1.2. Install syslog-ng</h2>
<pre>
$ cd ..
$ mkdir syslog-ng
$ vim Pkgfile
</pre>
<pre>
# Description: alternate syslogging daemon
# URL: http://www.balabit.com/network-security/syslog-ng/opensource-logging-system
# Packager: c9 team, silvino at bk dot ru
# Depends on: eventlog, glib, libwrap
name=syslog-ng
version=3.5.6
release=1
source=(http://balabit.com/downloads/files/syslog-ng/sources/$version/source/${name}_${version}.tar.gz
syslog-ng.rc syslog-ng.conf)
build() {
cd $name-$version
./configure \
--prefix=/usr \
--sysconfdir=/etc \
--libexecdir=/var/libexec \
--localstatedir=/var \
--mandir=/usr/man \
--enable-dynamic-linking \
--sbindir=/sbin \
--enable-tcp-wraper
make && make DESTDIR=$PKG install
rm -rf $PKG/usr/doc
rm -rf $PKG/usr/share/include/scl/syslogconf/README
install -D -m 644 ../syslog-ng.conf $PKG/etc/syslog-ng.conf
install -D -m 755 ../syslog-ng.rc $PKG/etc/rc.d/syslog-ng
}
</pre>
<pre>
$ sudo prt-get depinst glib
$ pkgmk -um
$ pkgmk -uf
$ fakeroot pkgmk -d
$ sudo pkgadd /usr/ports/packages/syslog-ng#3.5.6-1.pkg.tar.gz
</pre>
<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=(syslog-ng lo net crond)
# End of file
</pre>
<h2 id="syslogrc">1.3. Syslog-ng RC</h2>
<pre>
$ vim syslog-ng.rc
</pre>
<pre>
#!/bin/sh
#
# /etc/rc.d/syslog-ng: start/stop syslog-ng logging daemon
#
case $1 in
start)
/sbin/syslog-ng -f /etc/syslog-ng.conf -p /var/run/syslog-ng.pid
;;
stop)
killall -q /sbin/syslog-ng
rm -f /var/run/syslog-ng.pid
;;
restart)
$0 stop
sleep 2
$0 start
;;
*)
echo "usage: $0 [start|stop|restart]"
;;
esac
</pre>
<h3 id="syslog-conf">1.4. Syslog-ng configuration</h3>
<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>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>
<pre>
$ sudo sh /etc/rc.d/syslog-ng start
$ sudo sh /etc/rc.d/sysklogd stop
</pre>
<a href="index.html">Tools Index</a>
<p>This is part of the c9-doc Manual.
Copyright (C) 2016
c9 team.
See the file <a href="fdl-1.3-standalone.html">Gnu Free Documentation License</a>
for copying conditions.</p>
</body>
</html>
|