Improve performance, add additional ram, improve Ubuntu user-data (and fix 22.04)

ubuntu/http/user-data

@@ -11,3 +11,21 @@ autoinstall:
   ssh:
     install-server: true
     allow-pw: yes
+  late-commands:
+      - |
+        curtin in-target --target=/target -- /bin/bash -c ' \
+            sed -ie "s/^[#\s]*UseDNS.*$/UseDNS no/g" /etc/ssh/sshd_config; \
+            ssh-keygen -A; \
+            systemctl enable ssh.service; \
+            sed -ie "s/^GRUB_DEFAULT=.*/GRUB_DEFAULT=\"0\"/g" /etc/default/grub; \
+            sed -ie "s/^GRUB_CMDLINE_LINUX=.*/GRUB_CMDLINE_LINUX=\"net.ifnames=0 biosdevname=0 systemd.unified_cgroup_hierarchy=0\"/g" /etc/default/grub; \
+            sed -ie "s/^GRUB_CMDLINE_LINUX_DEFAULT=.*/GRUB_CMDLINE_LINUX_DEFAULT=\"net.ifnames=0 biosdevname=0 systemd.unified_cgroup_hierarchy=0\"/g" /etc/default/grub; \
+            update-grub; \
+            update-initramfs -c -k all; \
+            apt-get -y purge snapd; \
+            systemctl disable apt-daily.service; \
+            systemctl disable apt-daily.timer; \
+            systemctl disable apt-daily-upgrade.service; \
+            systemctl disable apt-daily-upgrade.timer; \
+            exit 0 \
+        '

ubuntu/ubuntu-20.04-amd64.json

@@ -35,6 +35,7 @@
             "vm_name": "{{ user `template` }}",
 			"vnc_bind_address": "{{ user `vnc_bind_address` }}",
             "qemuargs": [
+              [ "-cpu", "host" ],
               [ "-m", "{{ user `memory` }}" ],
               [ "-display", "{{ user `qemu_display` }}" ]
             ]
@@ -78,7 +79,7 @@
         "https_proxy": "{{env `https_proxy`}}",
         "iso_checksum": "b8f31413336b9393ad5d8ef0282717b2ab19f007df2e9ed5196c13d8f9153c8b",
         "iso_name": "ubuntu-20.04.6-live-server-amd64.iso",
-        "memory": "2048",
+        "memory": "4096",
         "mirror": "http://releases.ubuntu.com",
         "mirror_directory": "focal",
         "name": "ubuntu-20.04-amd64",

ubuntu/ubuntu-22.04-amd64.json

@@ -34,12 +34,14 @@
             "shutdown_command": "echo 'ubuntu' | sudo -S shutdown -P now",
             "ssh_password": "ubuntu",
             "ssh_port": 22,
+            "ssh_read_write_timeout": "600s",
             "ssh_timeout": "10000s",
             "ssh_username": "ubuntu",
             "type": "qemu",
             "vm_name": "{{ user `template` }}",
 			"vnc_bind_address": "{{ user `vnc_bind_address` }}",
             "qemuargs": [
+              [ "-cpu", "host" ],
               [ "-m", "{{ user `memory` }}" ],
               [ "-display", "{{ user `qemu_display` }}" ]
             ]
@@ -83,7 +85,7 @@
         "https_proxy": "{{env `https_proxy`}}",
         "iso_checksum": "5e38b55d57d94ff029719342357325ed3bda38fa80054f9330dc789cd2d43931",
         "iso_name": "ubuntu-22.04.2-live-server-amd64.iso",
-        "memory": "2048",
+        "memory": "4096",
         "mirror": "http://releases.ubuntu.com",
         "mirror_directory": "22.04.2",
         "name": "ubuntu-22.04-amd64",