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Load Testing the Cloud
20.02.2012
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on five hits on the web stack (assuming you pushed all static assets to S3 or something static), the probability that each user is affected by a 1 percent failure rate (i.e., 100 percent minus availability
20%
Lmod – Alternative Environment Modules
30.01.2013
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, for a library that uses a specific compiler and MPI library, you would end up with a module names like atlas-3.10.0-opempi-1.6.2-open64-5.0 . The name is useful because it tells the user the library version
20%
Resource Management with Slurm
05.11.2018
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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
20%
Resource Management with Slurm
13.12.2018
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Lead Image © Vladislav Kochelaevs, fotolia.com
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
20%
News for Admins
01.06.2024
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open source, third-party, and AI-generated code," says the announcement (https://news.synopsys.com/2024-04-09-Synopsys ... and Management Software; LPI Launches Open Source Essentials Program; Apache Software Foundation Celebrates 25 Years; SUSE Announces Rancher Prime 3.0; NSA Issues Zero Trust Guidelines for Network Security
19%
Speed up your MySQL database
11.02.2016
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Lead Image © Mikhail Dudarev, 123RF.com
( NULL, 'Row 3', NULL); SELECT SLEEP(1); 08 09 mysql> INSERT INTO data_random VALUES ( MD5(CURRENT_TIMESTAMP()), 'Row 1', NULL); SELECT SLEEP(1); 10 mysql> INSERT INTO data_random VALUES ( MD5(CURRENT
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How to configure and use jailed processes in FreeBSD
14.03.2013
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© Corina Rosu, 123RF.com
struct jail 01 main(int argc, char **argv) 02 { 03 struct jail j; 04 int i; 05 [...] 06 /* Populate the jail struct */ 07 memset(&j, 0, sizeof(j)); 08 j.version = 0; 09 j.path =
19%
Exploiting, detecting, and correcting IAM security misconfigurations
07.04.2022
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Photo by Kyle Head on Unsplash
:aws:iam:::policy/IAM_Policy --policy-document file://privesc.json --set-as-default { "PolicyVersion": { "VersionId": "v2", "IsDefaultVersion": true, "CreateDate": "2021-10-14T09:52:55+00:00" } } By checking the policy
19%
Regular expression security
30.01.2020
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Lead Image © Jakub Jirsak, 123RF.com
of email addresses: ^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*$ When you see a string like this for the first time, the semantics are not immediately apparent, but regular
19%
Getting started with the OpenStack cloud computing framework
28.06.2011
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) layer for the cloud, virtualizing the various hardware components and making them available through a standard API. The first OpenStack release (dubbed "Austin") became available October 22 [3]; The Open

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