diff --git a/roles/bootstrap-os/tasks/bootstrap-centos.yml b/roles/bootstrap-os/tasks/bootstrap-centos.yml
index 721c431a4..f6a57b9d2 100644
--- a/roles/bootstrap-os/tasks/bootstrap-centos.yml
+++ b/roles/bootstrap-os/tasks/bootstrap-centos.yml
@@ -59,7 +59,23 @@
   with_items:
     - { option: "name", value: "ol{{ ansible_distribution_major_version }}_addons" }
     - { option: "enabled", value: "1" }
-    - { option: "baseurl", value: "http://yum.oracle.com/repo/OracleLinux/OL{{ ansible_distribution_major_version }}/addons/x86_64/" }
+    - { option: "baseurl", value: "http://yum.oracle.com/repo/OracleLinux/OL{{ ansible_distribution_major_version }}/addons/$basearch/" }
+  when:
+    - use_oracle_public_repo|default(true)
+    - '''ID="ol"'' in os_release.stdout_lines'
+    - (ansible_distribution_version | float) >= 7.6
+
+- name: Enable Centos extra repo
+  ini_file:
+    dest: "/etc/yum.repos.d/centos-extras.repo"
+    section: "extras"
+    option: "{{ item.option }}"
+    value: "{{ item.value }}"
+  with_items:
+    - { option: "name", value: "CentOS-{{ ansible_distribution_major_version }} - Extras" }
+    - { option: "enabled", value: "1" }
+    - { option: "gpgcheck", value: "0" }
+    - { option: "baseurl", value: "http://mirror.centos.org/centos/{{ ansible_distribution_major_version }}/extras/$basearch/" }
   when:
     - use_oracle_public_repo|default(true)
     - '''ID="ol"'' in os_release.stdout_lines'
diff --git a/tests/scripts/testcases_run.sh b/tests/scripts/testcases_run.sh
index 5c27747ce..55cf7c3c7 100755
--- a/tests/scripts/testcases_run.sh
+++ b/tests/scripts/testcases_run.sh
@@ -2,6 +2,7 @@
 set -euxo pipefail
 
 echo "CI_JOB_NAME is $CI_JOB_NAME"
+CI_TEST_ADDITIONAL_VARS=""
 
 if [[ "$CI_JOB_NAME" =~ "upgrade" ]]; then
   if [ "${UPGRADE_TEST}" == "false" ]; then
@@ -38,6 +39,11 @@ if [[ "$CI_JOB_NAME" =~ "opensuse" ]]; then
   ansible all -m raw -a 'zypper --gpg-auto-import-keys refresh'
 fi
 
+if [[ "$CI_JOB_NAME" =~ "ubuntu" ]]; then
+  # We need to tell ansible that ubuntu hosts are python3 only
+  CI_TEST_ADDITIONAL_VARS="-e ansible_python_interpreter=/usr/bin/python3"
+fi
+
 # Check out latest tag if testing upgrade
 test "${UPGRADE_TEST}" != "false" && git fetch --all && git checkout "$KUBESPRAY_VERSION"
 # Checkout the CI vars file so it is available
@@ -70,44 +76,44 @@ fi
 
 # Tests Cases
 ## Test Master API
-ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} tests/testcases/010_check-apiserver.yml $ANSIBLE_LOG_LEVEL
+ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} tests/testcases/010_check-apiserver.yml $ANSIBLE_LOG_LEVEL
 
 ## Test that all nodes are Ready
-ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} tests/testcases/015_check-nodes-ready.yml $ANSIBLE_LOG_LEVEL
+ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} tests/testcases/015_check-nodes-ready.yml $ANSIBLE_LOG_LEVEL
 
 ## Test that all pods are Running
-ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} tests/testcases/020_check-pods-running.yml $ANSIBLE_LOG_LEVEL
+ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} tests/testcases/020_check-pods-running.yml $ANSIBLE_LOG_LEVEL
 
 ## Test pod creation and ping between them
-ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} tests/testcases/030_check-network.yml $ANSIBLE_LOG_LEVEL
+ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} tests/testcases/030_check-network.yml $ANSIBLE_LOG_LEVEL
 
 ## Advanced DNS checks
-ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} tests/testcases/040_check-network-adv.yml $ANSIBLE_LOG_LEVEL
+ansible-playbook --limit "all:!fake_hosts" -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} tests/testcases/040_check-network-adv.yml $ANSIBLE_LOG_LEVEL
 
 ## Kubernetes conformance tests
-ansible-playbook -i ${ANSIBLE_INVENTORY} -e @${CI_TEST_VARS} --limit "all:!fake_hosts" tests/testcases/100_check-k8s-conformance.yml $ANSIBLE_LOG_LEVEL
+ansible-playbook -i ${ANSIBLE_INVENTORY} -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} --limit "all:!fake_hosts" tests/testcases/100_check-k8s-conformance.yml $ANSIBLE_LOG_LEVEL
 
 ## Idempotency checks 1/5 (repeat deployment)
 if [ "${IDEMPOT_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} ${CI_TEST_ADDITIONAL_VARS} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
 fi
 
 ## Idempotency checks 2/5 (Advanced DNS checks)
 if [ "${IDEMPOT_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} --limit "all:!fake_hosts" tests/testcases/040_check-network-adv.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} --limit "all:!fake_hosts" tests/testcases/040_check-network-adv.yml
 fi
 
 ## Idempotency checks 3/5 (reset deployment)
 if [ "${IDEMPOT_CHECK}" = "true" -a "${RESET_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e reset_confirmation=yes --limit "all:!fake_hosts" reset.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR}  -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} -e reset_confirmation=yes --limit "all:!fake_hosts" reset.yml
 fi
 
 ## Idempotency checks 4/5 (redeploy after reset)
 if [ "${IDEMPOT_CHECK}" = "true" -a "${RESET_CHECK}" = "true" ]; then
-  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} -e local_release_dir=${PWD}/downloads --limit "all:!fake_hosts" cluster.yml
 fi
 
 ## Idempotency checks 5/5 (Advanced DNS checks)
 if [ "${IDEMPOT_CHECK}" = "true" -a "${RESET_CHECK}" = "true" ]; then
-  ansible-playbook  --limit "all:!fake_hosts" tests/testcases/040_check-network-adv.yml $ANSIBLE_LOG_LEVEL
+  ansible-playbook ${ANSIBLE_LOG_LEVEL} -e @${CI_TEST_REGISTRY_MIRROR} -e @${CI_TEST_VARS} ${CI_TEST_ADDITIONAL_VARS} --limit "all:!fake_hosts" tests/testcases/040_check-network-adv.yml
 fi