This topic describes how to configure the hypervisor for Ceph-RBD support.The following instructions will walk you through steps for verifying and or installing the required hypervisor for Ceph-RBD support. Repeat this process for every NC in the Eucalyptus zone
Verify if qemu-kvm and qemu-img are already installed.
rpm -q qemu-kvm qemu-img
Proceed to the preparing the RHEV qemu packages step if they are not installed.
Verify qemu support for the ceph-rbd driver.
qemu-img --help
qemu-img version 0.12.1, Copyright (c) 2004-2008 Fabrice Bellard
...
Supported formats: raw cow qcow vdi vmdk cloop dmg bochs vpc vvfat qcow2 qed vhdx parallels nbd blkdebug host_cdrom
host_floppy host_device file gluster gluster gluster gluster rbd
If ‘rbd’ is listed as one of the supported formats, no further action is required; otherwise proceed to the next step.
eucalyptus-node service is running, terminate/stop all instances. After all instances are terminated, stop the eucalyptus-node service.
systemctl stop eucalyptus-node.service
Prepare the RHEV qemu packages:
If this NC is a RHEL system and the RHEV subscription to qemu packages is available, consult the RHEV package procedure to install the qemu-kvm-ev and qemu-img-ev packages. Blacklist the RHEV packages in the repository to ensure that packages from the RHEV repository are installed.
If this NC is a RHEL system and RHEV subscription to qemu packages is unavailable, built and maintained qemu-rhev packages may be used. These packages are available in the same yum repository as other packages. Note that using built RHEV packages voids the original RHEL support for the qemu packages.
If this NC is a non-RHEL (CentOS) system, -built and maintained qemu-rhev packages may be used. These packages are available in the same yum repository as other packages.
If you are not using the RHEV package procedure to install the qemu-kvm-ev and qemu-img-ev packages, install Eucalyptus -built RHEV packages: qemu-kvm-ev and qemu-img-ev , which can be found in the same yum repository as other Eucalyptus packages.
yum install qemu-kvm-ev qemu-img-ev
Start the libvirtd service.
systemctl start libvirtd.service
Verify qemu support for the ceph-rbd driver.
qemu-img --help
qemu-img version 0.12.1, Copyright (c) 2004-2008 Fabrice Bellard
...
Supported formats: raw cow qcow vdi vmdk cloop dmg bochs vpc vvfat qcow2 qed vhdx parallels nbd blkdebug host_cdrom
host_floppy host_device file gluster gluster gluster gluster rbd
Make sure the eucalyptus-node service is started.
systemctl start eucalyptus-node.service
Your hypervisor is ready for Eucalyptus Ceph-RBD support. You are now ready to configure Ceph-RBD for Eucalyptus .