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15.08.2016

Home » Archive » 2016 » Issue 34: Softw... »

": "0x0800" 07 } 08 }, "ip-match": { 09 "ip-protocol": 17 10 }, "ipv4-destination": "10.1.1.2/32", "udp-destination-port": 1234 11 }, "table_id": 0, "priority": 10 12

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Manage OpenVPN keys with Easy-RSA

06.10.2019

Home » Archive » 2019 » Issue 53: Secur... »

response = urllib.urlopen(url); 06 data = json.loads(response.read()) 07 08 for userentry in data: 09 if userentry.get('active'): 10 username = userentry.get('username') 11 12 if os

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Many Clouds, One API

22.08.2011

Home » Articles »

[inst.id] = inst.state 08 summary[inst.state] += 1 09 state 10 end 11 total = summary.values.inject(0) { |sum, i| sum += i } 12 puts "Found #{total} instances in the following states:" 13 summary

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Automate CentOS and RHEL installation with PXE

02.02.2021

Home » Archive » 2021 » Issue 61: Secur... »

--nameserver=10.42.0.10,10.42.0.11 12 # Root password 13 rootpw --iscrypted 14 # Run the Setup Agent on first boot 15 firstboot --enable 16 # Do not configure the X Window System 17 skipx 18 # System

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Distributed storage with Sheepdog

07.10.2014

Home » Archive » 2014 » Issue 23: 10 Ti... »

/lib/sheepdog root 582 581 0 13:13 ? 12:00:00 AM sheep -p 7000 /var/lib/sheepdog # grep sheep /proc/mounts /dev/sdb1 /var/lib/sheepdog ext4 rw,relatime,data=ordered 0 0 # grep sheep /etc/fstab /dev

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Security first with the Hiawatha web server

11.04.2016

Home » Archive » 2016 » Issue 32: Measu... »

LANDEV=eth0 05 06 echo -n "flushing all chains" 07 /sbin/iptables -F -t filter 08 /sbin/iptables -F -t nat 09 /sbin/iptables -F -t mangle 10 /sbin/iptables -X -t filter 11 /sbin

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Error-correcting code memory keeps single-bit errors at bay

14.11.2013

Home » Archive » 2013 » Issue 17: Cloud... »

-related error information and report it. This was initially done outside of the kernel at the beginning of the project, but, starting with kernel 2.6.16 (released March 20, 2006), edac was included

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Fundamentals of I/O benchmarking

11.04.2016

Home » Archive » 2016 » Issue 32: Measu... »

Example # iostat -xmt 1 /dev/sda Linux 3.16.7-21-desktop (tweedleburg) 08/07/15 _x86_64_ (8 CPU) 08/07/15 17:25:13 avg-cpu: %user %nice %system %iowait %steal %idle 1

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Darshan I/O analysis for Deep Learning frameworks

27.09.2021

Home » Archive » 2021 » Issue 65: 7 Em... »

08 integer :: counter 09 integer :: counter_limit 10 integer :: ierr 11 12 type(rec) :: my_record 13 14 counter_limit = 2000 15 16 ierr = -1 17 open(unit=8,file

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Moving HPC to the cloud

31.10.2025

Home » Archive » 2012 » Issue 11: Cloud... »

of options, including dual four-core Xeon, dual six-core Xeon, or quad 12-core AMD processors ranging in speed from 2.2 to 2.9GHz with 24 to 128GB of RAM per server and up to 1TB of scratch local storage per

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