Re: How to avoid long startup delay waiting for /dev/random?
Grant Edwards <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
On 2020-12-15, Paul Herring <[email protected]> wrote: > On Tue, Dec 15, 2020 at 5:22 PM Grant Edwards <[email protected]> > wrote: > >> After upgrading a small embedded system's net-snmp from 5.7.3 to 5.8, >> snmpd now takes a _long_ time to start up. Snmpd used to start >> "instantly", but now it blocks on /dev/random for as long as 3-5 >> minutes. This holds up my entire system startup unacceptably. >> >> Is there any way to avoid this disruptive behavior? > > We had a similar problem with docker pausing for 2×60s on startup > waiting for /dev/random to fill up (openssl was suspect.) > > We used rngd ot mitigate it. https://wiki.archlinux.org/index.php/Rng-tools > > Whether you have sufficient space for it, may be another matter... I might have enough memory for it, but I'm not aware of any other sources of entropy for rngd to harvest. I've I had known about this when the hardware was designed 10-12 years ago, I would have had the HW guys hook up a zener doide to an A/D input or something... -- Grant _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users