DNSMasq won't start

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1

--=== Your debug token is : vi6m3hus8o

Hi, I just installed pihole using the bash basic-install.sh method. I'm running a centos 7 minimal install as the OS.

sudo pihole status
::: DNS service is NOT running

sudo systemctl status dnsmasq
● dnsmasq.service - DNS caching server.
   Loaded: loaded (/usr/lib/systemd/system/dnsmasq.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2017-08-09 00:24:04 PDT; 4min 41s ago
  Process: 7814 ExecStart=/usr/sbin/dnsmasq -k (code=exited, status=3)
 Main PID: 7814 (code=exited, status=3)

Aug 09 00:24:04 dt-pihole.tang.local systemd[1]: Started DNS caching server..
Aug 09 00:24:04 dt-pihole.tang.local systemd[1]: Starting DNS caching server....
Aug 09 00:24:04 dt-pihole.tang.local dnsmasq[7814]: dnsmasq: cannot open log /var/log/pihole.log: Permission denied
Aug 09 00:24:04 dt-pihole.tang.local systemd[1]: dnsmasq.service: main process exited, code=exited, status=3/NOTIMPLEMENTED
Aug 09 00:24:04 dt-pihole.tang.local systemd[1]: Unit dnsmasq.service entered failed state.
Aug 09 00:24:04 dt-pihole.tang.local systemd[1]: dnsmasq.service failed.

seems like dnsmasq isn't running at all. Thanks in advance for the help!

2

Dnsmasq needs to be able to have r/w access to its log file:

dnsmasq: cannot open log /var/log/pihole.log: Permission denied
3

Here's the permissions on the log file:

ls -l /var/log/pi*
-rw-r--r--. 1 root   pihole 5875 Aug  9 00:13 /var/log/pihole_debug.log
-rw-r--r--. 1 pihole pihole 1860 Aug  9 21:26 /var/log/pihole-FTL.log
-rw-r--r--. 1 pihole pihole 2010 Aug  9 00:00 /var/log/pihole-FTL.log.1
-rw-r--r--. 1 root   root      0 Aug  8 23:55 /var/log/pihole.log

Who should I assign for owner & owner group?

thank you for looking at this!

4

It should be dnsmasq:root with those same permissions.

5 
$ sudo chown dnsmasq:root pihole.log
[sudo] password for ~~~~~:
chown: invalid user: ‘dnsmasq:root’

I checked /etc/passwd and the dnsmasq user doesn't exist. dnsmasq is definitely installed but i'm not sure if i should manually create the user.

6

Hm, I think dnsmasq actually uses the user nobody on CentOS, so try replacing it with that.

7

Still no go. user is set correctly but it looks like an SELinux thing according to this: Dnsmasq: cannot open log /var/log/pihole.log: Permission denied

chcon -v --type=dnsmasq_var_log_t /var/log/pihole.log

that command, taken from the link, has allowed dnsmasq to start. Is this permanent? And should I leave it like that?

8

I'm not sure if that's permanent, and it's odd that dnsmasq can't open its own log without breaking SELinux.

9

Just restarted and it seems to have stuck. Dnsmasq started just fine but now i can't browse to http:///admin. Would you like me to make another post for that?

Thank you for your help.

10

It should be http://pi.hole/admin

11

sorry, i didn't notice the address i left. I've been trying http:/ip.address/admin and it just gives me a blank page.

also:

 lighttpd -t
2017-08-10 13:16:09: (server.c.824) No configuration available. Try using -f option.

not sure if that's relevant, never worked with lighttpd before.

12

Ok, open a new topic for that.

13

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