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the Software
Before experimenting, you need to install RADOS and Ceph. Ceph, which is a plain vanilla filesystem driver on Linux systems (e.g., ext3 or ext4), made its way into the Linux kernel in Linux 2.6
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example creates a Crush map for a setup consisting of six OSDs (i.e., individual storage devices in servers) distributed over three racks:
crushtool --num_osds 6 -o crush.example.map --build host straw 1
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of the open source JBoss application server, which in turn is based on the JBoss Enterprise Application Platform 6, OpenShift now also supports Java EE 6, which — according to Red Hat — makes OpenShift more
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Recent trends in computing are toward more cores doing more tasks at once. These days, you are likely to have a dual- or quad-core CPU in your laptop, and perhaps 4, 6, 12, or 16 cores in your
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this in the story of their successful EC2 scaling experience.
A good tool for cache control is vmtouch, which is at home on most Linux 2.6, FreeBSD 7.x, or Solaris 10 kernels; mileage may vary on other *nix variants
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on four processes is shown in Listing 6. Notice that processes 3 and 4 didn’t contribute or do anything.
Listing 5: Point-to-Point
import numpy
from mpi4py import MPI
comm = MPI.COMM_WORLD
rank
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statements as for the AWS rollout, except the loop playbook for GCP differs significantly from the AWS rollout, as Listing 6 shows.
Listing 5
Playbook rollout_gcp.yml
---
- hosts: localhost
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-Grundschutz (Basic Protection) Compendium [5], serve as public information security guidelines for many companies because they are very close to the requirements of ISO 27001 IT management certification [6].
Other
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can be regulated by SELinux, AppArmor, or some other mandatory access control system. The sVirt component in libvirt 0.6.1 and newer actually does some of the work for SELinux and AppArmor [2
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Linux containers have been fully functional since kernel 2.6.29. However, Linux has had containers in the form of Virtuozzo [1] and OpenVZ [2] for some time. The difference is that the Linux kernel
