Issue domain requests are coming from the routing src ip

[shreefentsar]

Server operating system version

debian

Plesk version and microupdate number

latest

I have dedicated server from OVH, that has around 40 ip
these 40 ip's are on 3 main routing.

ip route show
    default via x.y.z.254 dev eno0
    a.b.c.0/24 dev eno0 proto kernel scope link src a.b.c.161
    x.y.b.0/24 dev eno0 proto kernel scope link src x.y.b.74
    x.y.z.0/24 dev eno0 proto kernel scope link src x.y.z.238

so for example I have 16 ip on the routing a.b.c.0/24 ending by 160 to 175

and I have PLESK ( hosting control panel ( like whm/cpanel ))
when I assign any domain to any ip on the routing a.b.c.0/24
then it works good when I ping the domain or open the domain it's ok, but all the requests that's going out from that domain are going to be from the routing source ip whatever the dedicated ip that I assigned to it for example the domain is assigned to a.b.c.162, all the requests that are coming from it ( for example using cron or whatever the server in back-end ( php ) do are coming from a.b.c.161

how can I solve this problem?

 

[Peter Debik]

The closest to your request is Add an option to choose "default" nic for inbound/outbound, but I am not sure whether it will be possible to define individual outbound ips for all aspects of single domains. I've also heard of iproute2 (D.2. ip route), a package with which your request could be done, but not through Plesk. By default a server always uses its default IP address for all outgoing traffic.

 

[shreefentsar]

just in case you came here in my same situation that you have PLESK and lot of ip's
when you add a new ip add it with that way

x.y.z.xxx/255.255.255.255

that way it will use itself when it's doing outgoing requests.

 

[Peter Debik]

Was the question not how to have a domain running on a specific IP use exactly that same IP when requests are sent outbound from that domain?

 

[shreefentsar]

Was the question not how to have a domain running on a specific IP use exactly that same IP when requests are sent outbound from that domain?

yes that was the question

how to have a domain running on a specific IP use exactly that same IP when requests are sent outbound from that domain?

 

[Peter Debik]

And how does the code provided solve that? Will the server not still use the default IP address to respond to requests?

 

[shreefentsar]

And how does the code provided solve that? Will the server not still use the default IP address to respond to requests?

it's not a code, it's the way you add the ip into the Plesk server
like that:

 

[shreefentsar]

to explain more :
let's say we want to add this list of ip's:
10.10.10.160
10.10.10.161
and so on until
10.10.10.175
the default way to add it in Plesk using the mentioned OVH subnet mask
it was
10.10.10.175/28
or
10.10.10.175/255.255.255.240

this will result

so our network address that will respond or do outgoing requests is
10.10.10.160

but when we add it like that
10.10.10.175/32
or
10.10.10.175/255.255.255.255
this will be the result

and this will be our network address that will be used on outgoing requests :
10.10.10.175