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feat: Add reverse proxy and dynamic base_url support #48

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Merged
charlescng merged 1 commit into from
Apr 19, 2026
Merged

feat: Add reverse proxy and dynamic base_url support #48

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2 changes: 1 addition & 1 deletion observium/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ RUN mkdir -p /opt/observium/firstrun /opt/observium/logs /opt/observium/rrd /con
tar zxvf observium-community-latest.tar.gz && \
rm observium-community-latest.tar.gz

RUN a2enmod rewrite ssl
RUN a2enmod rewrite ssl remoteip headers

RUN mkdir /etc/service/apache2
COPY apache2.sh /etc/service/apache2/run
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8 changes: 8 additions & 0 deletions observium/apache-observium
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Expand Up @@ -2,6 +2,14 @@
<VirtualHost *:8668>
ServerAdmin webmaster@localhost
DocumentRoot /opt/observium/html

RemoteIPHeader X-Forwarded-For
RemoteIPTrustedProxy 10.0.0.0/8
RemoteIPTrustedProxy 172.16.0.0/12
RemoteIPTrustedProxy 192.168.0.0/16

SetEnvIf X-Forwarded-Proto "https" HTTPS=on

<Directory />
Options FollowSymLinks
AllowOverride None
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19 changes: 18 additions & 1 deletion observium/firstrun.sh
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Expand Up @@ -48,13 +48,30 @@ else
sed -i -e 's/PASSWORD/'$PW'/g' /config/config.php
sed -i -e 's/USERNAME/observium/g' /config/config.php
fi

# if syslog config line is not already in config.php then add it
grep -qF 'enable_syslog' /config/config.php || echo "\$config['enable_syslog'] = 1;" >> /config/config.php

# Add dynamic base_url and reverse proxy support to config.php
grep -qF 'Dynamic base_url detection' /config/config.php || cat <<'EOF' >> /config/config.php

// --- Dynamic base_url detection ---
if (isset($_SERVER['HTTP_HOST'])) {
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') {
$_SERVER['HTTPS'] = 'on';
}
$protocol = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https' : 'http';
$host = $_SERVER['HTTP_HOST'];
$prefix = isset($_SERVER['HTTP_X_FORWARDED_PREFIX']) ? rtrim($_SERVER['HTTP_X_FORWARDED_PREFIX'], '/') : '';
$script_path = rtrim(dirname($_SERVER['SCRIPT_NAME']), '/\\');
$config['base_url'] = $protocol . "://" . $host . $prefix . $script_path . "/";
}
// ----------------------------------
EOF

ln -s /config/config.php /opt/observium/config.php
chown nobody:users -R /opt/observium
chmod 755 -R /opt/observium
chmod 755 /config/config.php

if [ -f /etc/container_environment/TZ ] ; then
sed -i "s#\;date\.timezone\ \=#date\.timezone\ \=\ $TZ#g" /etc/php/8.3/cli/php.ini
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