重定向dhcpd的log记录

在寝室用树莓派作为路由器，dhcpd的log几乎占满整个/var/log/syslog，根据网上教程将log重定向至/var/log/dhcp/dhcpd

步骤

去掉注释

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# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
log-facility local7;

找到/var/log/syslog相关设置，加入local7.none，否则dhcpd的log会同时写入到两边。

1	.;auth,authpriv.none,local7.none -/var/log/syslog

另外，在底下加入一行

1	local7.debug /var/log/dhcp/dhcpd.log

1	sudo mkdir /var/log/dhcp

1	sudo systemctl restart isc-dhcp-server.service rsyslog.service