On 2024-09-23, Rick Rackow <r...@rackow.io> wrote:
> Hey Team,
> We have the following scenario: we get a list of IPs from an external 
> service, add them to our squid ACLs via a cronjob and then in the same 
> cronjob also reload squid. In this scenario it can happen that occasionally 
> we get some nonsense response from the external service and that lands in the 
> config, causing the config file to be invalid. Now if we to `systemctl reload 
> squid` squid crashes on the restart because the config is invalid and 
> thereafter can’t be restarted without explicitly stating `systemctl start 
> squid`. 
>
> The question is, has it been considered to validate the config file before 
> performing the actual reload, so there’s no disruption to squid if there was 
> a working config beforehand?

That's easy to do from your cronjob: write the new config to a temporary
file, check it with "squid -f $filename -k parse", only move into place
and reload if ok.


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