Ubuntu Server 18.04 LTS Release
With the release of Ubuntu 18.04 LTS (Bionic Beaver), some flavor versions have also been updated. On this post, we will introduce the changes that Ubuntu Server brings.
First, Ubuntu Server 18.04 LTS is equipped with a 4.15 kernel, which has integrated Meltdown and Spectre security patches, and supports the latest hardware from IBM, Intel and other vendors, supports POWER host and NV kernel signing, AMD secure memory encryption and support software The latest MD driver for RAID improvement.
The most noteworthy improvement for Ubuntu Server 18.04 LTS is the Subiquity Service Installer, which promises to provide customers with the same level of comfort and installation speed as Ubuntu Desktop’s Ubiquity installer.
However, if you want to use LVM, RAID, VLANs, bonds, multipath or re-use existing partitions, then you still need to use the previous installer. Another major change is ifupdown has been replaced by Netplan.
The backend configuration of Ubuntu Server 18.04 LTS is provided by systemd-networkd by default, and Chrony has replaced Network Time Protocol daemon NTPd as the recommended server of NTP protocol. Systemd-timesyncd is used for basic time synchronization.
“Going along with this change, ntpd has been demoted from main to universe. ntpd will continue to work but will only receive best-effort security maintenance. When upgrading to Ubuntu 18.04 it is highly recommended to migrate to chrony if you had set up ntpd before,” said Canonical.
