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32%
Managing Linux Filesystems
13.06.2016
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»
Archive
»
2016
»
Issue 33: IPv6...
»
Standard Filesystems Distribution Filesystem Debian (from v7.0 wheezy) ext4 Ubuntu (from v9.04) ext4 Fedora (from v
22
) XFS SLES (from v12
32%
mpi4py – high-performance distributed Python
30.11.2020
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2020
»
Issue 60: Secur...
»
): 11 12 s =
0.0
13 s += h * f(a) 14 for i in range(1, n): 15 s +=
2.0
* h * f(a + i*h) 16 # end for 17 s += h * f(b) 18 return (s/2.) 19 # end def
20
21
22
# Main section 23 comm = MPI
32%
Security first with the Hiawatha web server
11.04.2016
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»
2016
»
Issue 32: Measu...
»
-fastcgi are running, as expected. Listing 1 Process List root 589
0.0
0.3 142492 3092 ? Ss
20
:35 0:
00
nginx: master process /usr/sbin/nginx -g daemon on; master_process on; www
32%
Protect Your Servers with Nmap
23.07.2012
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.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION
22
/tcp open ssh OpenSSH 4.3 (protocol
2.0
) 25/tcp closed smtp 53/tcp open domain ISC BIND 9
32%
Predicting Drive Doom
20.10.2013
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HPC
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,000,592,982,016 bytes [3.
00
TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: ACS-2 (unknown minor revision code: 0
x
001
32%
Real-World HPC: Setting Up an HPC Cluster
04.11.2011
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HPC
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-server 192.168.1.2; filename "/pxelinux.0"; host node01 { hardware ethernet
00:11:22
:33:44:a0; fixed-address 192.168.1.101; } host node01-bmc { hardware ethernet
00:11:22
:33:44:8d; fixed-address 192
31%
Warewulf 4
13.12.2022
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Packages: (1/6): dhcp-common-4.3.6-47.el8.noarch.rpm 902 kB/s | 206 kB
00:00
(2/6): dhcp-libs-4.3.6-47.el8.
x
86_64.rpm 3.1 MB/s | 147 kB
00:00
(3
31%
VTP for VLAN management
04.10.2018
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2018
»
Issue 47: Findi...
»
:/ 1 -rw- 4414921 Aug
22
2017
00:00
:02 c2960-lanbase-mz.122-25.FX.bin 2 -rw- 736 Aug
22
2017 10:53:02 vlan.dat 64016384 bytes total (59600727 bytes free) If you
31%
A closer look at hard drives
18.07.2013
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2013
»
Issue 15: What’...
»
: 156301488
20
Logical Sector size: 512 bytes 21 Physical Sector size: 512 bytes
22
device size with M = 1024*1024: 76319 MBytes 23
31%
Distributed storage with Sheepdog
07.10.2014
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»
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»
2014
»
Issue 23: 10 Ti...
»
Sheepdog Server in Action # ps -ef|egrep '([c]orosyn|[s]heep)' root 491 1 0 13:04 ?
00:00
:30 corosync root 581 1 0 1:13 PM ?
00:00
:03 sheep -p 7000 /var
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