syslog-ng (v 3.15.1) 无法侦听标准 TCP 或 UDP（但可以通过 TLS 侦听）

Question

绞尽脑汁想想我可能在这里遗漏了什么...我升级到版本 3.15.1 并且无法在 TCP 或 UDP 上侦听。奇怪的是，我能够监听 TCP 并通过 TLS 进行通信。我已经阅读并重新阅读了手册 (https://syslog-ng.com/documents/html/syslog-ng-ose-latest-guides/en/syslog-ng-ose-guide-admin/html/configuring-sources-network.html)。运行在 CentOS 7 上。

这是我配置的相关部分：

...
# never listens and have tried using udp() and tcp() sources as 
# well as breaking each out to their individual source defs 
source s_net {
       network(ip(0.0.0.0) port(6514) transport("tcp"));
       network(ip(0.0.0.0) port(514) transport("udp"));
};

# works perfectly
source s_net_tls {
    network(
        ip(0.0.0.0)
        port(22514)
        transport("tls")
        tls(
            key-file('/path/to/foo.key')
            cert-file('/path/to/foo.pem')
            peer-verify(optional-untrusted)
            ssl-options(no-sslv2, no-sslv3, no-tlsv1)
        )
    );
};
...

netstat 的输出：

$ netstat -tulna | grep -e 514 -e 6514 -e 22514
tcp        0      0 0.0.0.0:22514           0.0.0.0:*               LISTEN
$

这是标准输出：

$ sudo syslog-ng -Fedv; syslog-ng-ctl verbose --set=on && syslog-ng-ctl trace --set=on && syslog-ng-ctl debug --set=on
... [ OMITTING UNNECESSARY LINES ] ...
[2018-06-23T20:46:47.406200] Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='libafsocket.so', module='afsocket'
[2018-06-23T20:46:47.406363] Registering candidate plugin; module='afsocket', context='source', name='unix-stream'
[2018-06-23T20:46:47.406371] Registering candidate plugin; module='afsocket', context='destination', name='unix-stream'
[2018-06-23T20:46:47.406375] Registering candidate plugin; module='afsocket', context='source', name='unix-dgram'
[2018-06-23T20:46:47.406421] Registering candidate plugin; module='afsocket', context='destination', name='unix-dgram'
[2018-06-23T20:46:47.406427] Registering candidate plugin; module='afsocket', context='source', name='tcp'
[2018-06-23T20:46:47.406432] Registering candidate plugin; module='afsocket', context='destination', name='tcp'
[2018-06-23T20:46:47.406440] Registering candidate plugin; module='afsocket', context='source', name='tcp6'
[2018-06-23T20:46:47.406444] Registering candidate plugin; module='afsocket', context='destination', name='tcp6'
[2018-06-23T20:46:47.406448] Registering candidate plugin; module='afsocket', context='source', name='udp'
[2018-06-23T20:46:47.406452] Registering candidate plugin; module='afsocket', context='destination', name='udp'
[2018-06-23T20:46:47.406456] Registering candidate plugin; module='afsocket', context='source', name='udp6'
[2018-06-23T20:46:47.406460] Registering candidate plugin; module='afsocket', context='destination', name='udp6'
[2018-06-23T20:46:47.406464] Registering candidate plugin; module='afsocket', context='source', name='syslog'
[2018-06-23T20:46:47.406468] Registering candidate plugin; module='afsocket', context='destination', name='syslog'
[2018-06-23T20:46:47.406474] Registering candidate plugin; module='afsocket', context='source', name='network'
[2018-06-23T20:46:47.406478] Registering candidate plugin; module='afsocket', context='destination', name='network'
[2018-06-23T20:46:47.406482] Registering candidate plugin; module='afsocket', context='source', name='systemd-syslog'
... [ OMITTING UNNECESSARY LINES ] ...
[2018-06-23T20:46:47.409282] Registering candidate plugin; module='basicfuncs', context='template-func', name='ipv4-to-int'
... [ OMITTING UNNECESSARY LINES ] ...
**[2018-06-23T20:46:47.438730] Accepting connections; addr='AF_INET(0.0.0.0:22514)'**
[2018-06-23T20:46:47.439056] Module loaded and initialized successfully; module='linux-kmsg-format'
[2018-06-23T20:46:47.439307] Running application hooks; hook='1'
[2018-06-23T20:46:47.439315] Running application hooks; hook='3'
[2018-06-23T20:46:47.439328] syslog-ng starting up; version='3.15.1'

我不是 syslog-ng 的新手，希望它是我忽略的简单东西 - 希望更多的人发现我遗漏的东西。

Answer 1

问题是虽然我定义了源驱动程序，但我忽略了它没有在定义的日志路径中被引用。我一直在太多的配置中来回跳动，不知何故错过了为输入源创建引用。现在可以使用了。

...
log {
    source(s_net);
    ...
}

netstat 的输出：

$ netstat -tulna | grep -e 514 -e 6514 -e 22514
tcp        0      0 0.0.0.0:22514           0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:6514            0.0.0.0:*               LISTEN     
udp        0      0 0.0.0.0:514             0.0.0.0:*       
$

syslog-ng (v 3.15.1) 无法侦听标准 TCP 或 UDP（但可以通过 TLS 侦听）

syslog-ng (v 3.15.1) unable to listen on standard TCP or UDP (but can listen over TLS)

syslog-ng