API not working: <p>The requested URL /api/v0 was not found on this server.</p>

Viktor_Astrom · 19 October 2020 11:17

When trying to access the API from another server I get 404 not found.

Example:

#curl -H 'X-Auth-Token: MYTOKEN' 'https://librenms.myurl.se/api/v0'
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /api/v0 was not found on this server.</p>
</body></html>

Here’s my Apache2 config:

root@librenms:~# cat /etc/apache2/sites-available/librenms.myurl.se.conf
<VirtualHost *:443>
        Protocols h2 http/1.1
        DocumentRoot /opt/librenms/html
        ServerName librenms.myurl.se
        SSLEngine on
        SSLCertificateFile /etc/apache2/cert/myurl/2019/wildcard.myurl.se.crt.pem
        SSLCertificateKeyFile /etc/apache2/cert/myurl/2019/wildcard.myurl.se.key.pem
        SSLCertificateChainFile /etc/apache2/cert/myurl/2019/wildcard.myurl.se.intermediate.pem
        AddDefaultCharset utf8
        AllowEncodedSlashes NoDecode
        <Directory /opt/librenms/html>
                AllowOverride All
                #Options FollowSymLinks MultiViews
                Options Indexes FollowSymLinks MultiViews
                Require all granted
        </Directory>
        <Directory /opt/librenms/html/plugins/Weathermap/>
                <Limit GET POST>
                        require ip myIP
                        require all denied
                </Limit>
        </Directory>
        # Enable http authorization headers
        <IfModule setenvif_module>
                SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1
        </IfModule>
        <FilesMatch ".+\.php$">
                SetHandler "proxy:unix:/run/php-fpm-librenms.sock|fcgi://localhost"
        </FilesMatch>
        ErrorLog ${APACHE_LOG_DIR}/error.log
        LogLevel warn
        CustomLog ${APACHE_LOG_DIR}/access.log combined
        ServerSignature Off
</VirtualHost>

Result from Validate:

root@librenms:/opt/librenms# ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS  | 1.68-53-gb32aa03d5
DB Schema | 2020_10_03_1000_add_primary_key_transport_group_transport (186)
PHP       | 7.2.24-0ubuntu0.18.04.7
Python    | 3.6.9
MySQL     | 10.3.24-MariaDB-1:10.3.24+maria~bionic
RRDTool   | 1.7.0
SNMP      | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 1.10.15
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct
[WARN]  PHP version 7.3 is the minimum supported version as of November, 2020. We recommend you update PHP to a supported version (7.4 suggested) to continue to receive updates. If you do not update PHP, LibreNMS will continue to function but stop receiving bug fixes and updates.
[WARN]  IPv6 is disabled on your server, you will not be able to add IPv6 devices.
root@librenms:/opt/librenms#

Chas · 20 October 2020 12:12

check https://docs.librenms.org/Installation/Installation-Ubuntu-1804-Apache/

make sure you enabled rewrite mod for apache

a2enmod rewrite
systemctl restart apache2

API url is a rewrite rule in the .htaccess

Viktor_Astrom · 21 October 2020 08:56

Thank you for the answer but the problem remains. Rewrite is enabled.

root@librenms:/opt/librenms# a2enmod rewrite
Module rewrite already enabled
root@librenms:/opt/librenms# systemctl restart apache2
root@librenms:/opt/librenms#

Chas · 21 October 2020 09:08

hmm check your .htaccess exists in /opt/librenms/html

Otherwise it might be something else interferring in your apache config, i don’t use it but for example this isn’t in the guide:
<FilesMatch “.+.php$”>
SetHandler “proxy:unix:/run/php-fpm-librenms.sock|fcgi://localhost”

Try to get your apache and php settings to match exactly here first https://docs.librenms.org/Installation/Installation-Ubuntu-1804-Apache/

Viktor_Astrom · 21 October 2020 10:41

Those lines are for enabling PHP-FPM per: https://docs.librenms.org/Installation/Install-LibreNMS/
I want PHP-FPM as the WebUI seems much snappier with it. I can’t see how that would affect apache2 ignoring the .htaccess.

root@librenms:/opt/librenms# cat /opt/librenms/html/.htaccess
#  DO NOT CHANGE THIS FILE
#  If you need to change this file, you are doing something wrong.

Options +FollowSymlinks +Multiviews

AddType image/svg+xml .svg
<IfModule mod_filter.c>
  <IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE text/javascript
    AddOutputFilterByType DEFLATE application/x-javascript
    AddOutputFilterByType DEFLATE image/svg+xml
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/xsd
    AddOutputFilterByType DEFLATE text/xsl
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE image/x-icon
  </IfModule>
</IfModule>

RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !\.(js|ico|txt|gif|jpg|png|css|php)
RewriteRule ^api/v0(.*)$ api_v0.php/$1 [L]
RewriteCond %{REQUEST_URI} !=/server-status
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !\.(js|ico|txt|gif|jpg|png|css|php)
RewriteRule ^(.*)$ index.php

AcceptPathInfo On
root@librenms:/opt/librenms#

Tried the composer_wrapper to see if I’ve missed any packages

root@librenms:/opt/librenms# su - librenms
$ ./scripts/composer_wrapper.php install --no-dev
> LibreNMS\ComposerHelper::preInstall
Loading composer repositories with package information
Installing dependencies from lock file
Nothing to install or update

Tried the apt install one-liner

root@librenms:/opt/librenms# apt install curl apache2 composer fping git graphviz imagemagick libapache2-mod-php7.2 mariadb-client mariadb-server mtr-tiny nmap php7.2-cli php7.2-curl php7.2-gd php7.2-json php7.2-mbstring php7.2-mysql php7.2-snmp php7.2-xml php7.2-zip python-memcache python-mysqldb rrdtool snmp snmpd whois python3-pip
Reading package lists... Done
Building dependency tree
Reading state information... Done
mtr-tiny is already the newest version (0.92-1).
nmap is already the newest version (7.60-1ubuntu5).
python-mysqldb is already the newest version (1.3.10-1build1).
rrdtool is already the newest version (1.7.0-1build1).
whois is already the newest version (5.3.0).
composer is already the newest version (1.6.3-1).
fping is already the newest version (4.0-6).
graphviz is already the newest version (2.40.1-2).
apache2 is already the newest version (2.4.29-1ubuntu4.14).
curl is already the newest version (7.58.0-2ubuntu3.10).
git is already the newest version (1:2.17.1-1ubuntu0.7).
imagemagick is already the newest version (8:6.9.7.4+dfsg-16ubuntu6.8).
libapache2-mod-php7.2 is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-cli is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-curl is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-gd is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-json is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-mysql is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-snmp is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-xml is already the newest version (7.2.24-0ubuntu0.18.04.7).
python-memcache is already the newest version (1.57-2ubuntu0.18.04.1).
snmp is already the newest version (5.7.3+dfsg-1.8ubuntu3.6).
snmpd is already the newest version (5.7.3+dfsg-1.8ubuntu3.6).
php7.2-mbstring is already the newest version (7.2.24-0ubuntu0.18.04.7).
php7.2-zip is already the newest version (7.2.24-0ubuntu0.18.04.7).
python3-pip is already the newest version (9.0.1-2.3~ubuntu1.18.04.3).
The following additional packages will be installed:
  mariadb-client-10.3 mariadb-client-core-10.3 mariadb-common mariadb-server-10.3 mariadb-server-core-10.3
Suggested packages:
  mailx mariadb-test tinyca
The following packages will be upgraded:
  mariadb-client mariadb-client-10.3 mariadb-client-core-10.3 mariadb-common mariadb-server mariadb-server-10.3 mariadb-server-core-10.3
7 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.

Dont want to upgrade mariadb atm as it will make holes in my graphs but this shouldn’t affect Apache2 ignoring the .htaccess either.

Chas · 21 October 2020 10:55

Ah ok, not sure then but pretty sure its just something to do with the apache config, do you have another default conf file like /etc/apache2/sites-enabled/000-default if yes, double check the AllowOverride setting is set like this

AllowOverride All

Also as another test change the order in your libre conf file to

<Directory "/opt/librenms/html/">
    Require all granted
    AllowOverride All
    Options Indexes FollowSymLinks MultiViews
  </Directory>

Doesn’t look like you are listening on port 80 in that config file either, do you have another?

Viktor_Astrom · 21 October 2020 13:49

Sadly, changing the order didn’t help. No we don’t listen on Port 80, only HTTPS.

000-default is removed

root@librenms:/opt/librenms# ls -l /etc/apache2/sites-enabled/
total 0
lrwxrwxrwx 1 root root 38 Feb  9  2018 librenms.myurl.se.conf -> ../sites-available/librenms.myurl.se.conf

Viktor_Astrom · 6 October 2021 07:40

The workaround here is to just access the API via the hosts IPnumber instead of hostname.

Then everything works as intended.

system · 6 October 2023 07:41

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