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14.01.2016
. Be sure to keep a sys on it.
Info
3D XPoint: https://en.wikipedia.org/wiki/3D_XPoint
Layton, J., and Barton, E. "Fast Forward Storage & IO," http://storageconference.us/2014/Presentations
12%
16.06.2015
), or very large clusters might need nodes dedicated to monitoring the cluster or to logging in users to the cluster and running applications.
For a simple two-node cluster that you might use as your
37%
17.12.2014
performance from many perspectives (i.e., CPU, network, disk). The tool is called nmon
.
Nmon Overview
Nmon is short for “Nigel’s Monitor” and is a command-line tool that presents performance information ... Monitoring with Nmon
14%
19.11.2014
local or remote, in your browser using websocketd. Although I won't go into it in depth, Web-vmstat does a pretty good job monitoring problem servers. For example, if a node has been exhibiting strange
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27.08.2014
of I/O, but it is also useful to look further down the stack to see how the I/O requests appear at the various layers. One layer that is useful to monitor is the block layer, which is near the bottom
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30.07.2014
claims to “handle approximately 160,000 distinct metrics per minute running on two niagra-2 Sun servers on a very fast SAN” [1]. Graphite is thus best used in environments that need to monitor thousands
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02.07.2014
examining local I/O (if the nodes are doing local I/O)
checking whether any nodes are swapping
spot-monitoring the compute nodes
The real list of possible tasks is extensive, but anything you want
12%
18.06.2014
and more than 1PB of data? Moreover, the answers constantly change because users are adding, modifying, and deleting data, but understanding – or at the very least, monitoring – your filesystem holistically
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04.06.2014
(Network as a Service), Heat (Orchestration), and Ceilometer (monitoring).
The OpenStack dashboard. a.k.a. Horizon, does not create any data – either meta or user. The compute service Nova is a special case
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19.05.2014
with my /home/layton
directory on my local system (host = desktop
). I also access an HPC system that has its own /home/jlayton
directory (the login node is login1
). On the HPC system I only keep some
