【个人笔记】syslog-ng接收远端syslog数据

要求使用syslog-ng记录信息，花了

更改1：/etc/sysconfig/rsyslog

我看到一篇博客【1】写如何改系统自带的syslog，这是平常非红帽家族常见的老syslog。当时觉得红帽虽然自带的不是syslog而是更syslog-ng一样的、新一代的rsyslog。

但是仍然是要禁用的。

摘选修改部分：

So first, will need to edit /etc/sysconfig/syslog and change the following 2 lines:

SYSLOGD_PARAMS="-r"
SYSLOG_DAEMON="syslog-ng"

The 1st option (-r ) tells the Daemon to be in passive mode - act like a logging server.
The 2nd option tells syslog Daemon to use syslog-ng as the system default logging scheme.

然后就可以改主文件了：/etc/syslog-ng/syslog-ng.conf

其实按理来说这样一改这个.conf文件就可以了。不过在此之前我做了太多的改动。所以记录一下出现过的错误

常见错误：

1. 没有声明全局变量

先是安装：

更改2

我是按照这篇博客：http://blog.csdn.net/jsjwk/article/details/7942096

1.加了几行代码在脚本文件

2.修改了/usr/local/syslog-ng/etc/patterndb.d 下的syslog-ng.conf，然而并不是主配置文件，无影响。

[root@server2 ~]# cd /usr/local/src/tarbag/  
[root@server2 tarbag]# wget http://www.balabit.com/downloads/files?path=/eventlog/0.2/eventlog_0.2.12.tar.gz  
[root@server2 tarbag]# tar -zxvf eventlog_0.2.12.tar.gz -C ../software/  
[root@server2 tarbag]# cd ../software/eventlog-0.2.12/  
[root@server2 eventlog-0.2.9]# ./configure   --prefix=/usr/local/eventlog && make && make install  
[root@server2 eventlog-0.2.9]# ls /usr/local/eventlog/  
include   lib  
   
[root@server2 syslog-ng-3.0.5]# cd -  
/usr/local/src/tarbag  
[root@server2 tarbag]# wget http://www.balabit.com/downloads/files?path=/libol/0.3/libol-0.3.15.tar.gz  
[root@server2 tarbag]# tar -zxvf libol-0.3.15.tar.gz -C ../software/  
[root@server2 tarbag]# cd ../software/libol-0.3.15/  
[root@server2 libol-0.3.9]# ./configure --prefix=/usr/local/libol && make && make install  
[root@server2 libol-0.3.9]# ls /usr/local/libol/  
bin   include   lib  
[root@server2 libol-0.3.9]# cd -  
[root@server2 tarbag]# wget http://www.balabit.com/downloads/files?path=/syslog-ng/open-source-edition/3.3.5/source/syslog-ng_3.3.5.tar.gz  
[root@server2 tarbag]# tar -zxvf syslog-ng_3.3.5.tar.gz -C ../software/  
[root@server2 tarbag]# cd ../software/syslog-ng-3.3.5/  
[root@server2 syslog-ng-3.0.5]#   export PKG_CONFIG_PATH=/usr/local/eventlog/lib/pkgconfig  
[root@server2 syslog-ng-3.0.5]# ./configure --prefix=/usr/local/syslog-ng --with-libol=/usr/local/libol && make && make install  
configure: error: Cannot find eventlog version >= 0.2: is pkg-config in path? (若出现这个错误，基本上是由于前面的PKG_CONFIG_PATH变量没指定好)  
[root@server2 syslog-ng-3.0.5]# ls /usr/local/syslog-ng/  
bin   libexec   sbin   share  
[root@server2 syslog-ng-3.0.5]# mkdir /usr/local/syslog-ng/etc  
[root@server2 syslog-ng-3.0.5]# mkdir /usr/local/syslog-ng/var  
[root@server2 syslog-ng-3.0.5]# cp contrib/syslog-ng.conf.RedHat   /usr/local/syslog-ng/etc/  
[root@server2 syslog-ng-3.0.5]# cp modules.conf scl.conf /usr/local/syslog-ng/etc/  
[root@server2 syslog-ng-3.0.5]# cp contrib/init.d.RedHat /etc/init.d/syslog-ng  
   
[root@server2 syslog-ng-3.0.5]# cd /usr/local/syslog-ng/etc/  
[root@server2 etc]# mv syslog-ng.conf.RedHat syslog-ng.conf  
[root@server2 etc]# cat syslog-ng.conf  
@version:3.0  
options {  
long_hostnames(off);  
log_msg_size(8192);  
flush_lines(1);  
log_fifo_size(20480);  
time_reopen(10);  
use_dns(yes);  
dns_cache(yes);  
use_fqdn(yes);  
keep_hostname(yes);  
chain_hostnames(no);  
perm(0644);  
stats_freq(43200);  
};  
source s_internal { internal(); };  
destination d_syslognglog { file("/var/log/syslog-ng.log"); };  
log { source(s_internal); destination(d_syslognglog); };  
   
source s_local {  
         unix-dgram("/dev/log");  
         file("/proc/kmsg" program_override("kernel:"));  
};   
  
filter f_messages { level(info..emerg); };   //定义7种日志类型  
filter f_secure { facility(authpriv); };  
filter f_mail { facility(mail); };  
filter f_cron { facility(cron); };  
filter f_emerg { level(emerg); };  
filter f_spooler { level(crit..emerg) and facility(uucp, news); };  
filter f_local7 { facility(local7); };  
destination d_messages { file("/var/log/messages"); };   //定义7种类型日志在客户端的位置  
destination d_secure { file("/var/log/secure"); };  
destination d_maillog { file("/var/log/maillog"); };  
destination d_cron { file("/var/log/cron"); };  
destination d_console { usertty("root"); };  
destination d_spooler { file("/var/log/spooler"); };  
destination d_bootlog { file("/var/log/dmesg"); };  
log { source(s_local); filter(f_emerg); destination(d_console); };  
log { source(s_local); filter(f_secure); destination(d_secure); flags(final); };  
log { source(s_local); filter(f_mail); destination(d_maillog); flags(final); };  
log { source(s_local); filter(f_cron); destination(d_cron); flags(final); };  
log { source(s_local); filter(f_spooler); destination(d_spooler); };  
log { source(s_local); filter(f_local7); destination(d_bootlog); };  
log { source(s_local); filter(f_messages); destination(d_messages); };  
   
# Remote logging   //定义监听的端口  
source s_remote {  
         tcp(ip(0.0.0.0) port(514));  
         udp(ip(0.0.0.0) port(514));  
};  
//定义客户端日志在服务器上保存的格式，位置和权限等  
destination r_console {file("/var/log/syslog-ng/$YEAR$MONTH$DAY/$HOST/console" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes));};  
destination r_secure {file("/var/log/syslog-ng/$YEAR$MONTH$DAY/$HOST/secure" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes));};  
destination r_cron {file("/var/log/syslog-ng/$YEAR$MONTH$DAY/$HOST/cron" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes));};  
destination r_spooler {file("/var/log/syslog-ng/$YEAR$MONTH$DAY/$HOST/spooler" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes));};  
destination r_bootlog {file("/var/log/syslog-ng/$YEAR$MONTH$DAY/$HOST/bootlog" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes));};  
destination r_messages {file("/var/log/syslog-ng/$YEAR$MONTH$DAY/$HOST/messages" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes));};  
log { source(s_remote); filter(f_emerg); destination(r_console); };  
log { source(s_remote); filter(f_secure); destination(r_secure); flags(final); };  
log { source(s_remote); filter(f_cron); destination(r_cron); flags(final); };  
log { source(s_remote); filter(f_spooler); destination(r_spooler); };  
log { source(s_remote); filter(f_local7); destination(r_bootlog); };  
log { source(s_remote); filter(f_messages); destination(r_messages); };  
   
[root@server2 etc]# chmod +x /etc/init.d/syslog-ng   
[root@server2 etc]# chkconfig --add syslog-ng  
service syslog-ng does not support chkconfig(若出现该错误，请修改该脚本前四行如下)  
[root@server2 etc]# head -4 /etc/init.d/syslog-ng   
#!/bin/bash  
#chkconifg: --add syslog-ng  
#chkconfig: 2345 12 88  
#Description: syslog-ng  
  
该脚本还需要修改下面的三个位置  
[root@server2 etc]# grep ‘PATH‘ /etc/init.d/syslog-ng   
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/syslog-ng/bin:/usr/local/syslog-ng/sbin  
[root@server2 etc]# grep 'INIT' /etc/init.d/syslog-ng |head -2  
  
INIT_PROG="/usr/local/syslog-ng/sbin/syslog-ng"     # Full path to daemon  
INIT_OPTS="-f /usr/local/syslog-ng/etc/syslog-ng.conf"                       # options passed to daemon  
   
  
[root@server2 etc]# service syslog-ng start  
Starting syslog-ng: /usr/local/syslog-ng/sbin/syslog-ng: error while loading shared libraries: libevtlog.so.0: cannot open shared object file: No such file or directory  
Starting Kernel Logger: 出现此错误是因为共享库链接没做好  
[root@server2 etc]#   
ln -s /usr/local/eventlog/lib/* /lib/  
ln -s /usr/local/eventlog/lib/* /lib64/  
  
   
出现下面的问题是因为主配置文件中缺少：@version:3.0这行  
Starting syslog-ng: Configuration file has no version number, assuming syslog-ng 2.1 format. Please add @version: maj.min to the beginning of the file;  
   
[root@server2 ~]# service syslog-ng start  
Starting Kernel Logger:                                     [   OK   ]  
[root@server2 etc]# cat /var/log/syslog-ng.log   
Jan 28 03:59:07 server2.yang.com syslog-ng[20225]: syslog-ng starting up; version='3.0.5' 

 export PKG_CONFIG_PATH=/usr/local/eventlog/lib/pkgconfig
 ./configure --prefix=/usr/local/syslog-ng

 #!/bin/bash
 #
 # chkconfig: -  60 27
 # description: syslog-ng SysV script.
 . /etc/rc.d/init.d/functions

 #!/bin/bash
 #
 # chkconfig: -  60 27
 # description: syslog-ng SysV script.
 . /etc/rc.d/init.d/functions

问题：

1.修改.conf后无法启动syslog-ng服务

显示错误：

/etc/syslog-ng/syslog-ng.conf 

@version:3.5

@include "scl.conf"

optional {

sync(0);

flush_line (0);

time_reopen (10);

log_fifo_size (1000);

chain_hostnames (off);

use_dns (no);

use_fqdn (no);

create_hostname  (yes);

};

source s_sys {

system();

internal();

udp(ip(0.0.0.0) port(514));

};

destination d_file { file{"/var/log/excute_log/grandstream.log" create_dirs(yes)); };

log { source(s_sys); destination(d_file); };

job for syslog-ng.service failed 

在修改syslog-ng.conf 后常见syslog-deamon start failed syslog-ng.service start failed. 通常是配置中有错误。当然也要注意依赖是否安装正确。

REFERENCE

[1] : http://www.linuxidc.com/Linux/2013-11/92691p2.htm

[2] : http://blog.csdn.net/jsjwk/article/details/7942096