Editing Red Hat Virtualization (RHV)

[[w:Red Hat Virtualization|Red Hat Virtualization]] (RHV) is an x86 virtualization product produced by Red Hat, based on the [[KVM]] hypervisor that enables management of unlimited guest machines<ref>https://www.redhat.com/en/topics/virtualization/what-is-KVM</ref>.

Components:
* Red Hat Virtualization Manager (RHV-M): <code> yum install rhvm-appliance</code><ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/installing_red_hat_virtualization_as_a_self-hosted_engine_using_the_cockpit_web_interface/index?extIdCarryOver=true&sc_cid=701f2000001OH7iAAG#Installing_the_Red_Hat_Virtualization_Manager_SHE_cockpit_deploy</ref>
* Red Hat Virtualization Hypervisors: Red Hat Enterprise Linux or RHV Host (RHV-H)

Features:
* RHV support scheduling policies that defines the logic by which virtual machines are distributed amongst hosts.<ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/administration_guide/index#sect-Scheduling_Policies</ref>
* Predefined Instance Types<ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/administration_guide/index#sect-Instance_Types</ref>
* Dashboard<ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/administration_guide/index#chap-System_Dashboard</ref>
* Storage Quality of Service <ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/chap-quality_of_service#sect-Storage_Quality_of_Service</ref>
* Host High Availability <ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/sect-host_resilience#Host_high_availability</ref>
* SSO using a Kerberos server<ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/configuring_ldap_and_kerberos_for_single_sign-on</ref>

== Commands ==
* <code>yum install ovirt-hosted-engine-setup && [[red Hat Virtualization/hosted-engine|hosted-engine]] --deploy</code><ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/installing_red_hat_virtualization_as_a_self-hosted_engine_using_the_command_line/index</ref> (i will install <code>yum install rhvm-appliance</code>) which has to be available. 
* <code>nodectl check</code>
* <code>vdsm-client</code>
::<code>vdsm-client Host getVMList</code>
::<code>vdsm-client Host getCapabilities</code>
::<code>vdsm-client Host getStats</code>
::<code>vdsm-client Host getAllVmStats</code>
::<code>vdsm-client Host getLVMVolumeGroups</code>

*<code>[[/hosted-engine/]] --deploy</code> or [[red Hat Virtualization/ovirt-hosted-engine-cleanup|ovirt-hosted-engine-cleanup]] to cleanup
*<code>hosted-engine --vm-status</code>
*<code>engine-config</code>

== oVirt commands ==
* <code>ovirt-host-deploy</code>
* <code>[[/ovirt-hosted-engine-cleanup/]]</code>
* <code>ovirt-hosted-engine-setup</code> shell script
* <code>ovirt-host-mgmt</code>

== Sanlock ==
Sanlock <ref>https://linux.die.net/man/8/sanlock</ref> is a shared storage lock manager. https://www.ovirt.org/develop/developer-guide/vdsm/sanlock.html. 

Logs: <code>/var/log/sanlock.log</code>.

Commands:
* <code>sanlock client status</code>
* <code>sanlock client log_dump</code>

== Logs ==
* <code>/var/log/vdsm/vdsm.log</code>
* <code>/var/log/libvirt/qemu/HostedEngineLocal.log</code>

== VDSM ==
Vdsm manages and monitors the host’s storage, memory and networks as well as virtual machine creation, other host administration tasks, statistics gathering, and log collection.
* Logs: <code>/var/log/vdsm/vdsm.log</code>

== Activities ==
=== Basic ===
# Read RHV Quick Start: https://www.redhat.com/en/blog/red-hat-virtualization-43-quick-start
# Install RHV following https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/installing_red_hat_virtualization_as_a_self-hosted_engine_using_the_cockpit_web_interface/index
## Install RHVH Self-hosted Engine Deployment Host<ref>https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/installing_red_hat_virtualization_as_a_self-hosted_engine_using_the_cockpit_web_interface/index#Installing_the_self-hosted_engine_deployment_host_SHE_cockpit_deploy</ref>
## Install Red Hat Virtualization Host (RHVM): <code>yum install rhevm</code>
# Read RHV Administration Guide: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/administration_guide/index

=== Advanced ===
# Install RHV using NFS as a shared storage filesystem a troubleshoot problems following https://www.ovirt.org/develop/troubleshooting-nfs-storage-issues.html
# Review Backup documentation: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html-single/administration_guide/index#chap-Backups_and_Migration and Veritas NetBackup support.
# Read Red Hat Virtualization Life Cycle https://access.redhat.com/support/policy/updates/rhev

== See also ==
* Red Hat Virtualization Host (RHVH)
* [[KVM]], virsh,  [[kVM/qemu|qemu]]
* [[DevOps/Ansible|Ansible]] ovirt/RHV module, https://docs.ansible.com/ansible/latest/modules/ovirt_module.html

== References ==
{{Reflist}}

[[Category:Linux]]
[[Category:Virtualization]]