4.275. rsyslog

Previously, running rsyslog with Transport Layer Security (TLS) and TCP caused extensive memory and CPU consumption. Consequent to this, the system could become unresponsive. The source code has been modified and problems with the memory and CPU consumption no longer occur.

Prior to this update, the rsyslog initscript created an invalid lock file named rsyslogd. As a consequence, rsyslog and rsyslogd did not match and the rc daemon did not stop the process when shutting down the system. With this update, the source code is modified so that the initscript creates a valid lock file.

On the IBM System z and PowerPC architectures, the rsyslog daemon did not respect the configuration to send messages using TLS encryption. As a consequence, messages were sent as plain text. With this update, rsyslog is modified to send messages encrypted.

Previously, the "ActionExecOnlyOnceEveryInterval" directive did not work as expected. If another message came within the time limit, the timeout got reset and would never expire. This problem has been fixed and the timeout now expires as expected.

Previously, rsyslog did not build the omsnmp module by default. This update provides the omsnmp module so that users are able to send syslog messages over Simple Network Management Protocol (SNMP).

Previously, the rsyslog daemon included /var/log/boot.log in the /etc/logrotate.d/syslog file. The rotation caused a new boot.log file to be created with zero length, while a date was appended to the old one. Eventually, after a certain number of rotations, the boot.log data got lost. With this update, rotation is no longer used for /var/log/boot.log.

This update includes the new ommail module in the rsyslog package, which can be used for sending emails based on received syslog events.

This update introduces the new "SpaceLFOnReceive" configuration option and the "RSYSLOG_SysklogdFileFormat" format template. These new features allow users to configure rsyslog to behave like the sysklogd daemon, which was available in previous releases.