Status is offline but everything is working

hippytyre · January 12, 2022, 8:30pm

Please follow the below template, it will help us to help you!

If you are Experiencing issues with a Pi-hole install that has non-standard elements (e.g you are using `nginx` instead of `lighttpd`, or there is some other aspect of your install that is customised) - please use the Community Help category.

Expected Behaviour:

[Pihole should be showing its status as active as everything is working correctly.
OS Dietpi/bullsye]

Actual Behaviour:

[pihole shows the status as offline]

Debug Token:

[https://tricorder.pi-hole.net/F0neLqHV/]

yubiuser · January 13, 2022, 6:03am

   2022-01-12 20:22:28: mod_fastcgi.c.487) FastCGI-stderr:PHP message: PHP Warning:  Executing sudo pihole status web failed. in /var/www/html/admin/scripts/pi-hole/php/func.php on line 15

   2022-01-12 20:18:05: mod_fastcgi.c.487) FastCGI-stderr:PHP message: PHP Warning:  Executing sudo pihole restartdns reload-lists failed. in /var/www/html/admin/scripts/pi-hole/php/func.php on line 15

Something is wrong here. The web interface failed to execute Pi-hole commands. Strangely, the relevant line of code is not at line 15.

github.com

pi-hole/AdminLTE/blob/f85da922fd178c3b94521a691c71b7b43cb3cb57/scripts/pi-hole/php/func.php#L15

    
      
          *
          *  This file is copyright under the latest version of the EUPL.
          *  Please see LICENSE file for your rights under this license. */
          
          
// Credit: http://stackoverflow.com/a/4694816/2087442
          // Modified because of https://github.com/pi-hole/AdminLTE/pull/533
          ini_set("pcre.recursion_limit", 1500);
          function validDomain($domain_name, &$message = NULL)
          {
          	if(!preg_match("/^((-|_)*[a-z\d]((-|_)*[a-z\d])*(-|_)*)(\.(-|_)*([a-z\d]((-|_)*[a-z\d])*))*$/i", $domain_name)) {
          		if($message !== NULL)
          			$message = "it contains invalid characters";
          		return false;
          	}
          	if(!preg_match("/^.{1,253}$/", $domain_name)) {
          		if($message !== NULL)
          			$message = "its length is invalid";
          		return false;
          	}
          	if(!preg_match("/^[^\.]{1,63}(\.[^\.]{1,63})*$/", $domain_name)) {
          		if($message !== NULL)

Can you please run from the command line

pihole status web

hippytyre · January 13, 2022, 6:55am

Thanks for having a look.

pihole status web

53

yubiuser · January 13, 2022, 11:53am

The reply is correct, the issue must be with the web interface. Please try nuking it

sudo rm -rf /var/www/html/admin
sudo git clone https://github.com/pi-hole/AdminLTE.git /var/www/html/admin

hippytyre · January 13, 2022, 12:10pm

I just nuked it the way you suggested. No change, it still says offline. I also did a reboot and pihole -up

Thanks for helping. Everything is working fine other than the status.

yubiuser · January 13, 2022, 12:13pm

Can you provide a new debug token please?

hippytyre · January 13, 2022, 4:35pm

No problem

https://tricorder.pi-hole.net/WcL89HmI/

yubiuser · January 14, 2022, 8:15am

Strange, it's the same issue again

   2022-01-13 16:34:11: mod_fastcgi.c.487) FastCGI-stderr:PHP message: PHP Warning:  Executing sudo pihole status web failed. in /var/www/html/admin/scripts/pi-hole/php/func.php on line 15
   2022-01-13 16:34:11: mod_fastcgi.c.487) FastCGI-stderr:PHP message: PHP Warning:  Executing sudo pihole status web failed. in /var/www/html/admin/scripts/pi-hole/php/func.php on line 15

Pining @MichaIng for DietPi assistance

hippytyre · January 14, 2022, 2:38pm

Could it be an issue with permissions? I tried installing pihole via the curl method and also through the dietpi-software suite but either way still shows offline. I'm running pihole, unbound and pivpn together and it's working great

MichaIng · January 14, 2022, 5:04pm

Does this work?

sudo -u www-data sudo pihole status web

The sudoers file is installed correctly?`

cat /etc/sudoers.d/pihole

hippytyre · January 14, 2022, 5:21pm

sudo -u www-data sudo pihole status web
sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set

cat /etc/sudoers.d/pihole
www-data ALL=NOPASSWD: /usr/local/bin/pihole

paracas · January 14, 2022, 5:26pm

hi,
I had the same problem, and after lots of trial and error I found it was due to subtle syntax errors in the sudo setup , specifically missing spaces -

# **cat /etc/sudoers.d/pihole**
# Pi-hole: A black hole for Internet advertisements
# incorrect syntax here caused pihole admin pages to show Status=Offline , 14jan2022 robin
#www-data ALL=NOPASSWD: /usr/local/bin/pihole
www-data ALL = NOPASSWD : /usr/local/bin/pihole

After adding the missing spaces between ALL and = and NOPASSWD and the colon , the Pihole web status started showing 'Active' , and I no longer see 'PHP Warning: Executing sudo pihole version failed.' errors in the lighttpd error log

yubiuser · January 14, 2022, 5:36pm

Interesting... the relevant code hasn't been touched in two years.

MichaIng · January 14, 2022, 5:41pm

These spaces were never (and are not on all systems of all Debian versions I run and test) required.
EDIT: Also the official man page does not suggest a space after NOPASSWD: sudoers(5) — sudo — Debian bookworm — Debian Manpages

@hippytyre

sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set

That is an interesting error message, can you show:

ls -l /usr/bin/sudo

hippytyre · January 14, 2022, 6:21pm

Sure:

-rwxr-xr-x 1 root root 135928 Feb 27 2021 /usr/bin/sudo

MichaIng · January 14, 2022, 6:26pm

The SUID bit is indeed missing, that way sudo cannot work at all. Not sure how this can happen (it is natively shipped with the package, of course, and since we saw reports about this several years ago for fresh Raspbian images, the DietPi image script sets it as well), but here is how to resolve:

sudo chmod 4755 /usr/bin/sudo

hippytyre · January 14, 2022, 6:53pm

That fixed the problem, thanks very much for spending time figuring that out.

Thanks guys

system · February 4, 2022, 6:53pm

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