Many websites must forward their log files to a central location for processing and alerting. Site Factory subscribers with both an Elite subscription and an Acquia Technical Account Manager have access to a certain amount of this centralized aggregation for collectors by using TLS-based log forwarding.
Legacy log forwarding is supported for remote destinations that support a generic Syslog destination. Acquia uses syslog-ng, which uses TLS over TCP. If you enable log forwarding, Cloud Platform will forward all available logs to the remote destination.
Procedure
If you want your logs forwarded to a remote destination, you must request that legacy syslog forwarding be enabled by contacting your Technical Account Manager and providing the following information:
- IP address of the infrastructure to which the logs will be sent
- Port on which the remote infrastructure is listening, typically port 443
- Environment that you want forwarded
CA certificate to use for encrypting traffic - The CA certificate can be either a self-signed or a valid certificate and must not require a password to unlock. The following is an example of the commands used to generate a CA certificate:
openssl genrsa -out acquia-ca.key 2048 && openssl req -x509 -new -nodes -key acquia-ca.key -days 1024 -subj "/C=US/ST=MA/L=Boston/O=Acquia/OU=My Website/CN=Acquia/[email protected]" -out acquia-ca.pem
Legacy log forwarding supports only a single endpoint. Changing your endpoint configuration will require a new ticket.
Legacy log forwarding supports one only X.509 certificate per file. Files containing more than one X.509 certificate will cause remote destination checks to fail.
Legacy log forwarding availability
If log forwarding is enabled, Cloud Platform will forward all generated logs of the following types:
- Apache
- Apache error
- Drupal request
- Drupal watchdog
- FPM access
- FPM error
- PHP error
- Varnish® (Only for websites with dedicated balancers. Logs from shared balancers aren’t supported. Forwarding Varnish logging isn’t enabled by default.)
Legacy log forwarding to Splunk
With some configuration, Acquia supports the use of Splunk.
This example shell script provides information about how to set up an Acquia application and inputs.conf file to use with Splunk services:
#!/bin/bash -ex
SPLUNK=/opt/splunk/bin
mkdir /opt/splunk/etc/apps/acquia
mkdir -p /opt/splunk/etc/apps/acquia/{default,ssl}
$SPLUNK/genRootCA.sh -d /opt/splunk/etc/apps/acquia/ssl
$SPLUNK/splunk createssl server-cert -d /opt/splunk/etc/apps/acquia/ssl -n splunk-syslog -c $(hostname)
cat > /opt/splunk/etc/apps/acquia/default/inputs.conf <<EOF
[tcp-ssl:5140]
[SSL]
serverCert = \$SPLUNK_HOME/etc/apps/acquia/ssl/splunk-syslog.pem
rootCA = \$SPLUNK_HOME/etc/apps/acquia/ssl/cacert.pem
requireClientCert = false
password = password
EOF
More information about legacy log forwarding
Acquia’s legacy log forwarding service doesn’t support other services, such as Sumologic or Loggly.
Although it may be possible for you to forward logs to your own custom endpoints, Acquia Support can’t provide any help with those attempts.