How to: Keep DHCPDISCOVER messages off the console in Solaris 11
bill at c3po.polymerindustries.biz
Sat Mar 23 16:42:37 UTC 2019
Console messages are controlled by the kernel.printk knob. Try
sysctl -w "kernel.printk=3 4 1 7"
I have this in /etc/sysctl.d/99-mystuff.conf which is run after a reboot:
#define KERN_EMERG "<0>" /* system is unusable */
#define KERN_ALERT "<1>" /* action must be taken immediately */
#define KERN_CRIT "<2>" /* critical conditions */
#define KERN_ERR "<3>" /* error conditions */
#define KERN_WARNING "<4>" /* warning conditions */
#define KERN_NOTICE "<5>" /* normal but significant condition */
#define KERN_INFO "<6>" /* informational */
#define KERN_DEBUG "<7>" /* debug-level messages */
#- console_loglevel: messages with a higher priority than
# this will be printed to the console
#- default_message_level: messages without an explicit priority
# will be printed with this priority
#- minimum_console_loglevel: minimum (highest) value to which
# console_loglevel can be set
#- default_console_loglevel: default value for console_loglevel
# console was too verbose
kernel.printk = 3 4 1 7
On 3/22/2019 4:27 PM, Richard Westerveld wrote:
> Not real familiar (yet) with the ISC DHCP server. In the past we used the regular old Solaris non-ISC version. Hopefully
> we'll get more familiar with this one as time goes on.
> Have it up and running - and working, from the viewpoint of what we use it for. We don't use it for actually assigning
> leases like a traditional use (all our clients have static IP addresses); we use it for booting already identified clients (ie
> ones that have entries in /etc/inet/dhcpd4.conf).
> The problem is we get lots of those DHCPDISCOVER/no free leases messages continually scrolling on the console for units that
> haven't been identified as ones we want to net boot (there's an application that adds their entries to the conf file when
> someone wants to boot them).
> I'd like some way to either turn that particular message off; or else direct them to some other location.
> I tried setting "unknown-clients" to ignore; but that apparently doesn't turn off the messages. (Note: I *think* these
> requests are coming from "unknown" clients; since I haven't found their mac addresses in the conf file.)
> I also tried setting the dhcp server to use syslog; but that doesn't seem to keep them from appearing on the console either.
> I'm sure *someone* at some point has tried to get rid of these same messages; so can anyone point me to the proper place to
> find out how to do it? An example might help, too.
> dhcp-users mailing list
> dhcp-users at lists.isc.org
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