Apache not reachable on local network

walterbyrd · 07-17-2013, 04:28 PM

I am running CentOS 6.4 x86_64

Code:

# httpd -v
Server version: Apache/2.2.15 (Unix)
Server built:   May 13 2013 22:11:16

I can access Apache by entering 127.0.0.1 on the local machine, but not by any other means. Not even by entering the systems IP address (192.168.1.109) from the local machine.

The system's name is "fir" I tried putting that in the config file.

Code:

# apachectl -k restart
[Wed Jul 17 03:12:00 2013] [error] (EAI 2)Name or service not known: Could not resolve host name fir -- ignoring!
[Wed Jul 17 03:12:00 2013] [error] (EAI 2)Name or service not known: Could not resolve host name fir -- ignoring!
httpd: apr_sockaddr_info_get() failed for Fir
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

Sydney · 07-17-2013, 05:09 PM

Try a /etc/hosts entry for fir. Do not remove or replace any entries.
127.0.0.1 fir

bathory · 07-18-2013, 08:31 AM

Quote:

I can access Apache by entering 127.0.0.1 on the local machine, but not by any other means. Not even by entering the systems IP address (192.168.1.109) from the local machine.

Check httpd.conf for the "Listen" directive and make sure it looks like:

Code:

Listen 80

You may also add a

Code:

ServerName fir

so it stops complaining about it.

sag47 · 07-25-2013, 10:49 AM

This is likely an issue with your firewall which I addressed in this post. Though, that post does not address your issues of accessing the web service via local terminal since your rule "-A INPUT -i lo -j ACCEPT" addresses that correctly.

Is the service listening on a port you expect?

Code:

netstat -nlp | grep '80\|httpd'

SAM

#root · 07-25-2013, 12:47 PM

consider re installing apache

SAbhi · 07-26-2013, 12:11 AM

The entry in /etc/hosts should be :

Code:

192.168.1.109 fir.somedomain fir          #fir.somedomain (if their is any domain set up) otherwise fir only would suffice
127.0.0.1 localhost.localdomain localhost

**Note that the 127.0.0.1 is by default set up as localhost in /etc/hosts file, there is no sense of changing that.

This could be a firewall issue if still not resolved by above check as @Sag47 suggested. Also check if you are using any proxy.

walterbyrd · 07-26-2013, 10:45 AM

Thanks for all the responses.

Listen in httpd.conf was already set to 80.

As to

ServerName fir

Do I just add that to the end of the file? There is no ServerName in my httpd.conf

Code:

# netstat -nlp | grep '80\|httpd'
tcp        0      0 :::80                       :::*                        LISTEN      2436/httpd          
unix  2      [ ACC ]     STREAM     LISTENING     18008  3111/clock-applet   /tmp/orbit-walter/linc-c27-0-77613d29e8734
unix  2      [ ACC ]     STREAM     LISTENING     18057  3171/gconf-im-setti /tmp/orbit-walter/linc-c63-0-795a43be8e7de

This was surprising. I feel certain I set the server name to 'fir' when I installed it.

Code:

[root@Fir conf]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

SAbhi · 07-27-2013, 02:31 AM

just set the entry in /etc/hosts as i suggested see the output:
your localhost entry is correct.

walterbyrd · 07-27-2013, 12:03 PM

Since this is CentOS, not Debian, do I edit /etc/hosts or /etc/sysconfig/network?

According to this, is should be network:

http://www.cyberciti.biz/faq/linux-s...-of-my-server/

Also, what do I use for a domain name? My DNS server is comcast (75.75.75.75) so do I use comcast.com or comcast.net or do I just make something up?

Should I set up my own DNS server?

SAbhi · 07-28-2013, 05:01 AM

Quote:

Since this is CentOS, not Debian, do I edit /etc/hosts or /etc/sysconfig/network?

What does that mean ?
we are talking about linux.. whatever distro you have that doesnt makes a difference in the nature of the files and configuration that happens on linux.

See i have set up a test server and did'nt set up a hostname using /etc/sysconfig/network still i have my hostname set up as server.abhi.com and DNS too.

Code:

server ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=localhost.localdomain

server ~]# hostname
server.abhi.com

server ~]# host 192.168.31.128
128.31.168.192.in-addr.arpa domain name pointer server.abhi.com.

you want your machine to be identified by a specific name on a network then you should setup a DNS server and if just locally identification is the requirement then an entry in /etc/hosts would suffice.
Hope you got it now, this is how it works.

sag47 · 08-01-2013, 09:53 AM

Quote:

Originally Posted by walterbyrd

Thanks for all the responses.

Listen in httpd.conf was already set to 80.

As to

ServerName fir

Do I just add that to the end of the file? There is no ServerName in my httpd.conf

Code:

# netstat -nlp | grep '80\|httpd'
tcp        0      0 :::80                       :::*                        LISTEN      2436/httpd          
unix  2      [ ACC ]     STREAM     LISTENING     18008  3111/clock-applet   /tmp/orbit-walter/linc-c27-0-77613d29e8734
unix  2      [ ACC ]     STREAM     LISTENING     18057  3171/gconf-im-setti /tmp/orbit-walter/linc-c63-0-795a43be8e7de

This was surprising. I feel certain I set the server name to 'fir' when I installed it.

Code:

[root@Fir conf]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

Did you not see my response? You have port 80 firewalled according to your own config.

https://www.linuxquestions.org/quest...6/#post4996603

Quote:

Originally Posted by sag47

As an aside not related to your "ping" troubles, in iptables order in which the rules are implemented matters. Since "-A INPUT -j REJECT --reject-with icmp-host-prohibited" appears before "-A INPUT -p tcp --dport 80 -j ACCEPT" then it will get blocked before it ever reaches that rule. Reorganize it so that the "REJECT" rules are at the very bottom of your rule set.