[squid-users] Reconfiguring Squid every few seconds

[Amos Jeffries]

On 19/03/22 13:48, roee klinger wrote:
> Hello,
> 
> I have a server with multiple 4G modems with Squid running on it, the 4G 
> modems get an internal private IP that is dynamic (unfortunately this 
> can't be changed),
> 
> I set up Squid to use the interfaces as follows:
> 
>     tcp_outgoing_address <some_ip>
> 
> The configuration works well and everything works great, however, 
> whenever I restart one of the modems (I have many, and I restart them a 
> lot), I get a new internal private IP, and I need to reconfigure Squid, 
> this means that I will be running "squid -k reconfigure" multiple times 
> a minute.
> 
> Will this have a bad effect on Squid and traffic (I understand this does 
> not cause Squid to restart)? What is my alternative?
> 

Alternative is to **not** configure Squid with a static IP.

You could use an outgoing TOS or NFMARK from Squid. The OS networking 
rules can select routes based on that.

OR, if the src-IP has to change based on the modem being used. You could 
use the TOS/MARK in src-NAT rules before route selection - those being 
the point reconfigured instead of Squid.

Amos