Re: [GENERAL] Unable to connect to Postgresql

On 04/10/2017 01:23 PM, John Iliffe wrote:
> On Monday 10 April 2017 11:53:35 Daniel Verite wrote:
>>     John Iliffe wrote:
>>> So, the problem is resolved, although I have no idea why it was
>>> necessary.
>>
>> The key seems to be the PrivateTmp=true in the systemd service.
>> Apache is not chrooted as demonstrated upthread, but that
>> setting alone makes the normal, system-wide /tmp inaccessible
>> to its processes, including the postgres Unix domain socket opened
>> there.
>>
>> I suspect that your attempt to set PrivateTmp=false as a test was
>> missed by systemd  for some reason. You could probably insist
>> in that direction and eventually make it work, but I don't see
>> how it's better than the alternative /var/pgsql or localhost through
>> TCP.
>>
>>> Also, I now have several hundred programmes to update to add the host
>>> path and none of them will now be portable.
>>
>> Given that you set two directories: /tmp and /var/pgsql,
>> I would think you can let the other apps use /tmp as before
>> and have only Apache use /var/pgsql ?
>
> Yes, I will do that, but there are several hundred PHP web page scripts to
> be updated.  Presumably if one script opens two different databases then
> both of the pg_connect() instances will need to be updated.

Seems to me that it would be easier to try:

PrivateTmp=false

in the httpd systemd file.


>
>>
>>
>> Best regards,
>


--
Adrian Klaver
adrian.klaver@aklaver.com