These are my brief notes of the installation of ovirt engine 4.5.7 over 4.5.6
engine under el8.
This is my environment:
* Almalinux 10.1: x86_64_v2
* ovirt-engine-appliance-almalinux10-4.5.7-1.el10.x86_64
I upgraded node from el8 (centos) via el9 (centos) to el10 (Alma linux) because
the el8 4.5.6 engine cannot connect to el10 directly.
I found many issue moving from my old installation. After successful
installation you have to put all the cluster in management mode (powering off
all the VMs), change the compatibility level of the cluster (4.8) and
reinstall all the nodes.
(please take care that this is only a brief memo of my history)
For the deployment of the hosted-engine this is what I did - please note that
it isn't a step 2 step instruction, these are only my working notes that I
found after many many iterations.
-----------------------------------
install 4.5.7
dnf install sshpass
hosted-engine --deploy --4 --restore-from-file=260204-backup.tar.gz
--config-append=260204-answers-deploy.conf
Please NOTE that you have to set the same as the original engine:
eg. if you have keycloak disabled in the original you have to set disabled here
or in the "--config-append" file.
Please also notice NOT TO USE the same hosted-engine storage for the new
engine! You have to set up a NEW domain.
patch -p0 -d/ <<EOF
***
/usr/share/ansible/collections/ansible_collections/ovirt/ovirt/roles/hosted_engine_setup/tasks/bootstrap_local_vm/03_engine_initial_tasks.yml.orig
2026-01-06 01:00:00.000000000 +0100
---
/usr/share/ansible/collections/ansible_collections/ovirt/ovirt/roles/hosted_engine_setup/tasks/bootstrap_local_vm/03_engine_initial_tasks.yml
2026-02-04 17:13:38.457406310 +0100
***************
*** 3,10 ****
block:
- name: Wait for the local VM
ansible.builtin.wait_for_connection:
! delay: 5
! timeout: 3600
- name: Add an entry for this host on /etc/hosts on the local VM
ansible.builtin.lineinfile:
dest: /etc/hosts
--- 3,18 ----
block:
- name: Wait for the local VM
ansible.builtin.wait_for_connection:
! delay: 30
! timeout: 600
! - name: DEBUG - Test manual SSH connection
! ansible.builtin.debug:
! msg: "ssh -v root@{{
hostvars[he_ansible_host_name]['local_vm_ip']['stdout_lines'][0] }} 'echo
Connected'"
!
! - name: DEBUG - Print connection variables
! ansible.builtin.debug:
! msg: "Target host: {{
hostvars[he_ansible_host_name]['local_vm_ip']['stdout_lines'][0] }} | FQDN: {{
he_fqdn }} Ansible connection: {{ ansible_connection | default('ssh') }}"
!
- name: Add an entry for this host on /etc/hosts on the local VM
ansible.builtin.lineinfile:
dest: /etc/hosts
EOF
patch -p0 -d/ <<EOF
***
/usr/share/ansible/collections/ansible_collections/ovirt/ovirt/roles/hosted_engine_setup/tasks/bootstrap_local_vm/04_engine_final_tasks.yml.orig
2026-02-06 16:31:52.827175249 +0100
---
/usr/share/ansible/collections/ansible_collections/ovirt/ovirt/roles/hosted_engine_setup/tasks/bootstrap_local_vm/04_engine_final_tasks.yml
2026-02-06 16:32:23.427533682 +0100
***************
*** 10,18 ****
# After a restart the engine has a 5 minute grace time,
# other actions like electing a new SPM host or reconstructing
# the master storage domain could require more time
! - name: Wait for the engine to reach a stable condition
ansible.builtin.wait_for:
! timeout: "600"
when: he_restore_from_file is defined and he_restore_from_file
- name: Configure LibgfApi support
ansible.builtin.command: engine-config -s LibgfApiSupported=true
--cver=4.2
--- 10,18 ----
# After a restart the engine has a 5 minute grace time,
# other actions like electing a new SPM host or reconstructing
# the master storage domain could require more time
! - name: Wait for the engine to reach a stable condition (600s too much)
ansible.builtin.wait_for:
! timeout: 180
when: he_restore_from_file is defined and he_restore_from_file
- name: Configure LibgfApi support
ansible.builtin.command: engine-config -s LibgfApiSupported=true
--cver=4.2
EOF
. ~/.profile
export http_proxy=http://proxy.dmz.ssis:3128
export https_proxy=http://proxy.dmz.ssis:3128
export ftp_proxy=http://proxy.dmz.ssis:3128
export no_proxy=.ovirt
# connect to ovirt-engine@localhost
echo "proxy=http://proxy.dmz.ssis:3128"; | tee -a /etc/yum.conf
while [ `ls -1 /var/log/ovirt-engine/setup | wc -l` -eq 0 ]; do echo -n ".";
sleep 1; done
su - postgres
psql -c "ALTER DEFAULT PRIVILEGES FOR ROLE postgres IN SCHEMA public GRANT
SELECT ON TABLES TO ovirt_engine_history_grafana;"
exit
link=/var/lib/grafana/plugins/performancecopilot-pcp-app
while :; do
if [ -L "$link" ] && ! [ -e "$link" ]; then
echo "Rimuovo link interrotto"
rm -f "$link"
grafana cli plugins install performancecopilot-pcp-app
break
fi
echo -n "."
sleep 1
done
patch -p0 -d/<<EOF
*** /usr/share/ovirt-engine/services/ovirt-engine/ovirt-engine.py.orig
2026-02-04 20:53:23.672000000 +0100
--- /usr/share/ovirt-engine/services/ovirt-engine/ovirt-engine.py
2026-02-04 20:26:23.619000000 +0100
***************
*** 63,69 ****
def _processTemplate(self, template, dir, mode=None):
out = os.path.join(
dir,
! re.sub('\.in$', '', os.path.basename(template)),
)
with open(template, 'r', encoding='utf-8') as f:
t = Template(f.read())
--- 63,69 ----
def _processTemplate(self, template, dir, mode=None):
out = os.path.join(
dir,
! re.sub(r'\.in$', '', os.path.basename(template)),
)
with open(template, 'r', encoding='utf-8') as f:
t = Template(f.read())
EOF
chmod a+r /etc/pki/ovirt-engine/keys/engine.p12;chmod a+r
/etc/pki/ovirt-engine/keys/jboss.p12
tail -F /var/log/ovirt-engine/setup/*.log
# ansible: Make sure `ovirt-engine` service is running
curl http://localhost/ovirt-engine/services/health
tail -F /var/log/ovirt-engine/engine.log
# ansible: Wait for the engine to reach a stable condition (600 seconds -too
much-)
After that, follow the ansible instructions.
Finally you have the hosted-engine in the cluster full renewed
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