Re: [Astlinux-devel] WAN Failover

[Lonnie A. <li...@lo...>]

Hi David,

First, a 4G/LTE Modem in bridge mode behaves just like a cable modem, which is ideal with AstLinux ... the WiFi client to iPhone tethering method leaves the public IP address unknown to the local interface ... workable but not ideal.  I'm not sure what you mean that "WAN failover status shows 192.168.100.1 as (bogus) primary gateway"

> My ddclient uses eth0 as the external IPv4 address.

The simplest is to use a public server to determine your IPv4 address when using WAN Failover.

or "service dynamicdns stop" when switching to failover if you don't want to expend the extra traffic on updating your dynamic DNS.


> Is there a setting to change when Astlinux does the shutdown?

I seem to recall that when the UPS goes to a "critical" level then AstLinux does a shutdown, the accuracy of that number can vary a lot per the age of the battery.  If you want to ride the UPS down you could just "service ups stop" temporally.

The /etc/ups/*.conf files are auto-generated unless if a matching /mnt/kd/ups/*.conf file exists.  Samples are in /stat/etc/ups/

Saying that, what Michael suggested is good info as well, configuring the UPS itself.

Finally, if you really want your AstLinux box to power-down before the UPS powers off with safety, any margin less than 10-20% will be too low as the UPS battery ages.


Lonnie




> On May 17, 2018, at 9:12 AM, David Kerr <Da...@Ke...> wrote:
> 
> Starting a thread among developers on this topic to record some observations.  Now on day two of no power or internet and having got WAN failover working yesterday I have some observations...
> 
> Status page still shows my eth0 IPv4 address, which is 192.168.100.10 issued by my cable modem as external network down.
> 
> WAN failover status shows 192.168.100.1 as (bogus) primary gateway and 172.20.10.1 as accurate.  But what is needed is external IP address.
> 
> My ddclient uses eth0 as the external IPv4 address.  So my dynamic DNS updates are all failing/bogus.  Either I change to use an external site to determine my IP, or I do something in WAN failover script to change what ddclient does.  Any thoughts as to best approach?  I want something automatic that will work whether using primary or failover.
> 
> I turn off my generator overnight and run network from a large UPS.  According to syslog Astlinux decided to shutdown at 6am when upsmon determined low battery.  I think it was at 20% left, but at that level I still have 90-120 minutes of runtime left.  Is there a setting to change when Astlinux does the shutdown?
> 
> Thoughts?
> 
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