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10.04.2015
, and there are several implementations [3].
What Happened Thus Far
Figure 1 shows a typical setup with port knocking. The components involved here are the client and the server application, with a firewall to keep out
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17.01.2023
modified mine to keep it really simple:
server 2.rocky.pool.ntp.org
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow 10.0.0.0/8
local stratum 10
keyfile /etc/chrony.keys
leapsectz
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28.11.2011
to show seconds and microseconds since the beginning of the Unix epoch (00:00:00 UTC on January 1, 1970) (Figure 3).
Figure 3: Reporting time since
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21.08.2014
application then grabs the data from this database and creates charts. The client can be programmed by the user or it can come as a prepared daemon (e.g., collectd [3]). If you like to measure your own
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18.07.2013
buffered disk reads: 616 MB in
3.00 seconds = 205.03 MB/sec
$ hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 6292 MB in
2.00 seconds = 3153.09 MB/sec
If this were a spinning disk, you would also
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30.01.2020
=test
test: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=32
fio-3.12
Starting 1 process
Jobs: 1 (f=1): [w(1)][100.0%][w=654MiB/s][w=167k IOPS][eta 00m:00s
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17.04.2017
to occur every night of the week at 3:00am. This involved backing up an entire Ubuntu installation in a bootable image on network-attached storage (NAS) in the local network (Figure 3). When backing up
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20.06.2012
| 3.5 kB 00:00
elrepo | 1.9 kB 00:00
rpmforge
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05.11.2018
nodes, and make sure to do this as a user and not as root.
3. To make life easier, use shared storage between the controller and the compute nodes.
4. Make sure the UIDs and GIDs are consistent
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13.12.2018
In previous articles, I examined some fundamental tools for HPC systems, including pdsh [1] (parallel shells), Lmod environment modules [2], and shared storage with NFS and SSHFS [3]. One remaining
