php日志接入rsyslog,rsyslog和在PHP上的应用

rsyslog配置

rsyslog的配置文件为/etc/rsyslog.conf&＃xff0c;但真正的配置放在/etc/rsyslog.d/目录下

# Default rules for rsyslog.

#

# For more information see rsyslog.conf(5) and /etc/rsyslog.conf

#

# First some standard log files. Log by facility.

#

auth,authpriv.* /var/log/auth.log

*.*;user.none;auth,authpriv.none -/var/log/syslog

#cron.* /var/log/cron.log

#daemon.* -/var/log/daemon.log

kern.* -/var/log/kern.log

#lpr.* -/var/log/lpr.log

mail.* -/var/log/mail.log

user.* -/var/log/user.log #设备类型.紧急程度

修改了rsyslog的配置文件后&＃xff0c;需要重启服务来生效&＃xff0c;命令为service rsyslog restart

代码示例

PHP代码示例&＃xff1a;

openlog(&＃39;USER-LOG&＃39;, LOG_PID, LOG_USER);

syslog(LOG_ERR, &＃39;ERROR!!!&＃39;);

closelog();

运行结果&＃xff1a;

$ cat /var/log/user.log

Mar 17 02:45:34 homestead USER-LOG[6540]: ERROR!!!

函数解释

rsyslog会根据openlog()的设备类型&＃xff0c;和syslog()的紧急程度&＃xff0c;来确定该日志信息被写入哪个文件

bool openlog ( string $ident , int $option , int $facility )

$ident&＃xff1a;日志的标识&＃xff0c;将被添加到日志信息中(USER-LOG)

$option&＃xff1a;示例中的值为LOG_PID&＃xff0c;因此pid进程号将被添加到每条日志信息中([6540])

$option

$facility&＃xff1a;该参数指定记录信息的设备类型

$facility

bool syslog ( int $priority , string $message )

产生一条日志信息&＃xff0c;并被rsyslog系统分发

$priority&＃xff1a;紧急程度

$priority