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Learn how configure Syslog to securely ship logs over SSL to your Stack via Logstash. This is a good choice when you need to ship logs from appliances or devices where you cannot run one of the beats shippers.
Download star.logit.io.crt file and place in /etc/rsyslog.d/keys/ca.d/ or another directory
sudo mkdir -p /etc/rsyslog.d/keys/ca.d sudo curl -o /etc/rsyslog.d/keys/ca.d/star.logit.io.crt https://cdn.logit.io/star.logit.io.crt
Edit the Syslog config file as below
$DefaultNetstreamDriverCAFile /etc/rsyslog.d/keys/ca.d/star.logit.io.crt $ActionSendStreamDriver gtls $ActionSendStreamDriverMode 1 $ActionSendStreamDriverAuthMode x509/name $ActionSendStreamDriverPermittedPeer *.logit.io *.* @@your-logstash-host:your-ssl-port
- On many distros, also install the rsyslog-gnutls package (including CentOS, Fedora, Debian, and Ubuntu)
- If possible run the latest minor versions of rsyslog v7 or v8. There are many TLS bugs in past versions.
- Ensure you have @@ not a single @ infront of the host. This is so TCP is used.
Restart rsyslog so it detects the TLS-over-TCP destination:
sudo /etc/init.d/rsyslog restart
If you see either
could not load module '/usr/lib/rsyslog/lmnsd_gtls.so', rsyslog error -2078 [try http://www.rsyslog.com/e/2068 ]
could not load module '/usr/lib/rsyslog/lmnsd_gtls.so', dlopen: /usr/lib/rsyslog/lmnsd_gtls.so: cannot open shared object file: No such file or directory [try http://www.rsyslog.com/e/2066 ]
ls -la /usr/lib/rsyslog/lmnsd_gtls.so
If it doesn’t exist, install the related package (often called rsyslog-gnutls) or if you compiled rsyslog from source, compile the module.
sudo apt-get install rsyslog-gnutl
chmod 644 /etc/rsyslog.d/keys/ca.d/star.logit.io.crt
If you are using
$ModLoad lmnsd_gtls to explicitly load the TLS module, and that configuration option occurs before the
$DefaultNetstreamDriverCAFile has been defined. Explicitly loading the module is rarely required and the configuration above does not use it.
We recommend removing that
$ModLoad lmnsd_gtls option and relying on autoloading. If your
lmnsd_gtls needs to be explicitly loaded, like because it is in a non-default location, move the
$DefaultNetstreamDriverCAFile config line above the
Syslog is a format of message logs commonly used across many operating systems & network devices to send data to a logging server. Event data recorded by the system logging protocol can then be accessed by IT teams for the purposes of auditing, diagnostics & improving operational efficiency.
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