Hi.
I've got working configuration with Apache 2.0.46 on RHEL3 described below.
Apache is configured as forwarding proxy and has no other unusual config.
proxy.conf:
Listen 172.x.x.x:8080
<VirtualHost 172.x.x.x:8080>
ServerName proxy.localdomain
ProxyRequests On
ProxyVia On
...
</VirtualHost>
For administrative reasons some sites that are accessed via proxy are not addressed by their FQDN - there are /etc/hosts entries instead.
In /etc/nsswitch.conf there's hosts: files dns
So when client requests www.somesite.com (that has /etc/hosts entry), proxy retrieves the data. Apache resolves name by using hosts file an not DNS.
Problem:
I have exactly the same configuration (Apache proxy, nsswitch, hosts, resolv.conf) with Apache 2.0.63 (or 2.2.3) on CentOS 5.4 but result is quite different.
Apache seems to ignore nsswitch.conf (and consequently hosts file) when proxying!
When client requests www.somesite.com (that has /etc/hosts entry), Apache always tries to resolve it using DNS and (of course) returns error "DNS lookup failure for: www.somesite.com "
I tested resolver configuration by pinging www.somesite.com and confirmed address is resolved and working.
Is this expected behavior? Is there any way to force Apache to use settings in nsswitch.conf?
Thanks.
Matija
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