Hadoop clusters are designed to store and analyze extremely large amounts of unstructured data in distributed computing environments. Sahara enables you to boot Hadoop clusters in both virtual and bare metal environments. When Booting Hadoop clusters with Sahara on bare metal servers, you benefit from the bare metal performance with self-service resource provisioning.
-b
flag. Use sahara image elements
when building the image. See https://git.openstack.org/cgit/openstack/sahara-image-elements$ qemu-img convert -O raw image-converted.qcow image-converted-from-qcow2.raw
chroot
to the mounted directory and remove the installed grub./usr/sbin
./etc/sysconfig/selinux
, disable selinux SELINUX=disabled
onboot=yes
and BOOTPROTO=dhcp
for every interface./etc/sysconfig/network-scripts
directory.$ ironic node-create -d pxe_ipmitool \
-i ipmi_address=$IP_ADDRESS \
-i ipmi_username=$USERNAME \
-i ipmi_password=$PASSWORD \
-i pxe_deploy_kernel=$deploy.kernel.id \
-i pxe_deploy_ramdisk=$deploy.ramfs.id
$ ironic port-create -n $NODE_ID -a "$MAC_eth1"
$ ironic node-update $NODE_ID add properties/cpus=$CPU \
properties/memory_mb=$RAM properties/local_gb=$ROOT_GB \
properties/cpu_arch='x86_64'
$ nova flavor-create baremetal auto $RAM $DISK_GB $CPU
$ nova flavor-key baremetal set cpu_arch=x86_64
The vCPU ad vRAM parameters (x86_64 in the example) will not be applied because the operating system has access to the real CPU cores and RAM. Only the root disk parameter is applied, and Ironic will resize the root disk partition. Ironic supports only a flat network topology for the bare metal provisioning, you must use Neutron to configure it.
The cluster provisioning time is slower compared to the cluster provisioning
of the same size that runs on VMs. Ironic does real hardware reports which
is time consuming, and the whole root disk is filled from /dev/zero
for
security reasons.
nova boot
command. LP1544195Except where otherwise noted, this document is licensed under Creative Commons Attribution 3.0 License. See all OpenStack Legal Documents.