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Chapter 2. Installing Metrics Store
Prerequisites
Computing resources:
- 4 CPU cores
- 30 GB RAM
- 500 GB SSD disk
For the Metrics Store Installation virtual machine:
- 4 CPU cores
- 8 GB RAM
NoteThe computing resource requirements are for an all-in-one installation, with a single Metrics Store virtual machine. The all-in-one installation can collect data from up to 50 hosts, each running 20 virtual machines.
- Operating system: Red Hat Enterprise Linux 7.6 or later
- Software: Red Hat Virtualization 4.2 or later
- Network configuration: see Network_configuration_for_metrics_store_virtual_machines
2.1. Creating the Metrics Store virtual machines
Creating the Metrics Store virtual machines involves the following steps:
-
Configuring the Metrics Store installation with
metrics-store-config.yml
Creating the following Metrics Store virtual machines:
- The Metrics Store installer, a temporary virtual machine for deploying OpenShift and services on the Metrics Store virtual machines
- One or more Metrics Store virtual machines
- Verifying the Metrics Store virtual machines
Procedure
- Log in to the Manager machine using SSH.
Copy
metrics-store-config.yml.example
to createmetrics-store-config.yml
:# cp /etc/ovirt-engine-metrics/metrics-store-config.yml.example /etc/ovirt-engine-metrics/config.yml.d/metrics-store-config.yml
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Edit the parameters in
metrics-store-config.yml
and save the file. The parameters are documented in the file. On the Manager machine, copy
/etc/ovirt-engine-metrics/secure_vars.yaml.example
to/etc/ovirt-engine-metrics/secure_vars.yaml
:# cp /etc/ovirt-engine-metrics/secure_vars.yaml.example /etc/ovirt-engine-metrics/secure_vars.yaml
-
Update the values of
/etc/ovirt-engine-metrics/secure_vars.yaml
to match the details of your specific environment: Encrypt the secure_vars.yaml file:
# ansible-vault encrypt /etc/ovirt-engine-metrics/secure_vars.yaml
Go to the
ovirt-engine-metrics
directory:# cd /usr/share/ovirt-engine-metrics
Run the
ovirt-metrics-store-installation
playbook to create the virtual machines:# ANSIBLE_JINJA2_EXTENSIONS="jinja2.ext.do" ./configure_ovirt_machines_for_metrics.sh --playbook=ovirt-metrics-store-installation.yml --ask-vault-pass
- Log in to the Administration Portal.
-
Click Compute → Virtual Machines to verify the successful creation of the
metrics-store-installer
virtual machine and the Metrics Store virtual machines.
2.2. Deploying OpenShift and Metrics Store services
Deploy OpenShift, Elasticsearch, Curator (for managing Elasticsearch indices and snapshots), and Kibana on the Metrics Store virtual machines.
Procedure
-
Log in to the
metrics-store-installer
virtual machine. Run the
install_okd
playbook to deploy OpenShift and Metrics Store services to the Metrics Store virtual machines:# ANSIBLE_CONFIG="/usr/share/ansible/openshift-ansible/ansible.cfg" \ ANSIBLE_ROLES_PATH="/usr/share/ansible/roles/:/usr/share/ansible/openshift-ansible/roles" \ ansible-playbook -i integ.ini install_okd.yaml -e @vars.yaml -e @secure_vars.yaml --ask-vault-pass
Verify the deployment by logging in to each Metrics Store virtual machine:
Log in to the
openshift-logging
project:# oc project openshift-logging
Check that the Elasticsearch, Curator, and Kibana pods are running:
# oc get pods
If Elasticsearch is not running, see Troubleshooting related to ElasticSearch in the OpenShift Container Platform 3.11 documentation.
Check the Kibana host name and record it so that you can access the Kibana console in Chapter 4, Verifying the Metrics Store installation:
# oc get routes
Optional Cleanup
- Log in to the Administration Portal.
-
Click Compute → Virtual Machines and delete the
metrics-store-installer
virtual machine.
2.3. Network Configuration for Metrics Store virtual machines
Network configuration prerequisites:
-
Create a wildcard DNS record (
*.example.com
) for the DNS zone of the Metrics Store virtual machines. - Add the Host names of the Metrics Store virtual machines to your DNS server.
To set a static MAC Address for the Virtual Machine (optional)
- Log in to the Administration Portal.
- Click Compute → Virtual Machines, and select the virtual machine to configure.
-
Select the
Network Interfaces
tab, select a NIC, and clickEdit
. -
Select
Custom MAC Address
, and enter the MAC address you want to assign to this NIC. -
Click
OK
to save the configuration. - Reboot the virtual machine for the change to take effect.