3.1

Merry Christmas and happy new year!

This release introduces SNMP server, along with plenty of very useful enhancements.

New features:

• Introduce SNMP server that implements SNMP v2 (with community string) that offers program stats under OID tree 1.3.6.1.4.1.52535.121.
• System maintenance can now automatically install updates for Windows server.
• New configuration properties PreUnixScript and PreWindowsScript specify a short shell script to run prior to all other system maintenance actions.

Bug fixes:

• chrony software package is often broken on Debian-based distributions, thus do not install it anymore during the system maintenance software maintenance routine.
• Prevent timeout from prematurely terminating several Windows system maintenance actions due to a slow system.
• Fix Azure public cloud detection.
• Fix an infrequent name resolution crash in DNS black-list resolver.

Enhancements:

• Work around Go 1.11 memory consumption quirks to significantly reduce runtime memory usage.
• User may now specify a working directory when installing laitos via its Windows PowerShell installer script.
• All outgoing HTTP/S requests are made more robust with automated retry mechanism.
• SNMP client programs are installed automatically during system maintenance.