Create packer file and enable kitchen tests for CentOS8

* Create packer file for CentOS8 with similar logic to CentOS7
* Using dnf instead of yum as package manager everywhere
* Add kitchen tests for CentOS 8
* Install python3 version of aws-cfn-bootstrap scripts to support CentOS8

Signed-off-by: Enrico Usai <[email protected]>
Signed-off-by: Rex <[email protected]>

Author: rexcsn

.kitchen.cloud.yml

@@ -273,6 +273,67 @@ platforms:
     transport:
       username: centos
       ssh_key: <%= ENV['EC2_SSH_KEY_PATH'] %>
+  - name: centos-8-minimal
+    driver_plugin: ec2
+    driver_config:
+      image_id: <%= ENV['CENTOS8_IMAGE_ID'] %>
+      block_device_mappings:
+        - device_name: /dev/sda1
+          ebs:
+            volume_size: <%= ENV['VOLUME_SIZE'] || 25 %>
+            volume_type: gp2
+            delete_on_termination: true
+        - device_name: /dev/xvdba
+          virtual_name: ephemeral0
+        - device_name: /dev/xvdbb
+          virtual_name: ephemeral1
+        - device_name: /dev/xvdbc
+          virtual_name: ephemeral2
+        - device_name: /dev/xvdbd
+          virtual_name: ephemeral3
+        - device_name: /dev/xvdbe
+          virtual_name: ephemeral4
+        - device_name: /dev/xvdbf
+          virtual_name: ephemeral5
+        - device_name: /dev/xvdbg
+          virtual_name: ephemeral6
+        - device_name: /dev/xvdbh
+          virtual_name: ephemeral7
+        - device_name: /dev/xvdbi
+          virtual_name: ephemeral8
+        - device_name: /dev/xvdbj
+          virtual_name: ephemeral9
+        - device_name: /dev/xvdbk
+          virtual_name: ephemeral10
+        - device_name: /dev/xvdbl
+          virtual_name: ephemeral11
+        - device_name: /dev/xvdbm
+          virtual_name: ephemeral12
+        - device_name: /dev/xvdbn
+          virtual_name: ephemeral13
+        - device_name: /dev/xvdbo
+          virtual_name: ephemeral14
+        - device_name: /dev/xvdbp
+          virtual_name: ephemeral15
+        - device_name: /dev/xvdbq
+          virtual_name: ephemeral16
+        - device_name: /dev/xvdbr
+          virtual_name: ephemeral17
+        - device_name: /dev/xvdbs
+          virtual_name: ephemeral18
+        - device_name: /dev/xvdbt
+          virtual_name: ephemeral19
+        - device_name: /dev/xvdbu
+          virtual_name: ephemeral20
+        - device_name: /dev/xvdbv
+          virtual_name: ephemeral21
+        - device_name: /dev/xvdbw
+          virtual_name: ephemeral22
+        - device_name: /dev/xvdbx
+          virtual_name: ephemeral23
+    transport:
+      username: centos
+      ssh_key: <%= ENV['EC2_SSH_KEY_PATH'] %>
   - name: ubuntu-16-04-lts
     driver_plugin: ec2
     driver_config:

amis/build_ami.sh

@@ -16,7 +16,7 @@
 #
 # Usage: build_ami.sh --os <os> --region <region> --partition <partition> [--public] [--custom]
 #                     [--build-date <build-date>] [--arch <arch>]
-#   os: the os to build (supported values: all|centos6|centos7|alinux|alinux2|ubuntu1604|ubuntu1804)
+#   os: the os to build (supported values: all|centos6|centos7|centos8|alinux|alinux2|ubuntu1604|ubuntu1804)
 #   partition: partition to build in (supported values: commercial|govcloud|china|region)
 #   region: region to copy ami too (supported values: all|us-east-1|us-gov-west-1|...)
 #   custom: specifies to create the AMI from a custom AMI-id, which must be specified by variable CUSTOM_AMI_ID in the environment (optional)
@@ -114,7 +114,7 @@ parse_options() {
 check_options() {
     set -e
 
-    available_arm_os="ubuntu1804 alinux2"  # subset of supported OSes for which ARM AMIs are available
+    available_arm_os="ubuntu1804 alinux2 centos8"  # subset of supported OSes for which ARM AMIs are available
     available_os="centos6 centos7 alinux ubuntu1604 ${available_arm_os}"
     cwd="$(dirname $0)"
     export COOKBOOK_PATH="$(cd ${cwd}/..; pwd)"
@@ -184,8 +184,8 @@ check_options() {
     esac
 
     # Ensure the specified architecture-OS combination is valid
-    if [ "${_arch}" == "arm64" ] && [[ "${_os}" =~ ^centos[0-9]+ ]]; then
-      echo "Currently there are no CentOS arm64 AMIs available."
+    if [ "${_arch}" == "arm64" ] && [[ "${_os}" =~ ^centos[6-7]$ ]]; then
+      echo "Currently there are no arm64 AMIs available for ${_os}."
       exit 1
     elif [ "${_arch}" == "arm64" ] && [ "${_os}" == "alinux" ]; then
       echo "Currently there are no alinux (AL1) arm64 AMIs available."
@@ -222,7 +222,7 @@ do_command() {
           RC=$?
         done
         ;;
-      centos6|centos7|alinux|ubuntu1604|ubuntu1804|alinux2)
+      centos6|centos7|centos8|alinux|ubuntu1604|ubuntu1804|alinux2)
         packer build -color=false -var-file="${cwd}/packer_variables.json" -only=${only} "${cwd}/packer_${_os}.json"
         RC=$?
         ;;