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无法让 Monit 检查 apache2 的状态

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无法让 Monit 检查 apache2 的状态

我正在尝试在本地机器上配置 Monit 以了解其工作原理，但遇到了一些问题。

我想要做的是获取任何证据表明 Monit 已启动并正常运行和实际上是在监控一些东西。所以我的/etc/monit/monitrc看起来像

set daemon  60
set logfile /var/log/monit.log
set idfile /var/lib/monit/id
set statefile /var/lib/monit/state
set eventqueue
    basedir /var/lib/monit/events
    slots 100
set httpd port 2812 and
    allow username:password

check process apache2 with pidfile /usr/local/apache/logs/apache2.pid
    start program = "/etc/init.d/apache2 start"
    stop program  = "/etc/init.d/apache2 stop"
    if failed port 6543 protocol http then exec "/usr/bin/touch /tmp/monit"

如果我理解正确的话，由于 apache 不监听端口 6543（它只是一个随机数），我应该会收到错误，因此/tmp/monit应该创建该文件。因此我通过以下方式启动 monit：

sudo service monit start
sudo monit monitor apache2

不幸的是，没有创建这样的文件。相反，Web 控制台显示 apache - 的错误execution failed。日志显示'apache2' failed to start。

我究竟做错了什么？

编辑正如评论中所建议的，我以详细模式运行了 monit，方法是

monit -vv monitor apache2

（注释中建议的确切命令失败）。输出是

Runtime constants:
 Control file       = /etc/monit/monitrc
 Log file           = /var/log/monit.log
 Pid file           = /var/run/monit.pid
 Debug              = True
 Log                = True
 Use syslog         = False
 Is Daemon          = True
 Use process engine = True
 Poll time          = 60 seconds with start delay 0 seconds
 Expect buffer      = 256 bytes
 Event queue        = base directory /var/lib/monit/events with 100 slots
 Mail from          = (not defined)
 Mail subject       = (not defined)
 Mail message       = (not defined)
 Start monit httpd  = True
 httpd bind address = Any/All
 httpd portnumber   = 2812
 httpd signature    = True
 Use ssl encryption = False
 httpd auth. style  = Basic Authentication

The service list contains the following entries:

Process Name          = apache2
 Pid file             = /usr/local/apache/logs/apache2.pid
 Monitoring mode      = active
 Start program        = '/etc/init.d/apache2 start' timeout 30 second(s)
 Stop program         = '/etc/init.d/apache2 stop' timeout 30 second(s)
 Existence            = if does not exist 1 times within 1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s) then alert
 Pid                  = if changed 1 times within 1 cycle(s) then alert
 Ppid                 = if changed 1 times within 1 cycle(s) then alert
 Port                 = if failed localhost:6543 [HTTP via TCP] with timeout 5 seconds 1 times within 1 cycle(s) then exec '/usr/bin/touch /tmp/prova-monit' timeout 0 cycle(s) else if succeeded 1 times within 1 cycle(s) then alert

System Name           = system_andrea-Vostro-420-Series
 Monitoring mode      = active

答案1

PID 文件通常位于 下/var/run。

在您的中，/etc/monit/monitrc您引用了下的 pidfile /usr/local/apache/logs/apache2.pid。

尝试更改它以匹配 Apache 的 pidfile /var/run。

它应该是下列之一：

/var/run/httpd.pid

或者

/var/run/apache2.pid

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