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6%
A self-healing VM system
07.06.2019
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Lead Image © THISSATAN KOTIRAT , 123RF.com
with timeout 15 seconds 03 if status != 0 for 3 cycles then exec "/usr/bin/ansible-playbook rebuild_node.yml" 04 if status != 0 for 3 cycles then exec "/usr/bin/mail -s 'Node 5 ping failed
6%
Getting a free TLS certificate from Let's Encrypt
13.06.2016
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Lead Image © Stuart Miles, 123RF.com
="hanscees@hanscees.con" #adjust 11 12 LECROOT="/etc/letsencrypt/live" 13 mkdir /root/letsencrypt #justincase 14 15 #lets get certs 16 echo "will get the certs now" & sleep 3 17 for i in `echo $DOMAINS` ; do 18 echo "getting certs
6%
Lua for Apache
10.07.2012
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          firstname=v 12       elseif k=='lastname' then 13          lastname=v 14       end 15    end 16  17    r:puts(string.format("Hello %s %s!", firstname, lastname)) 18  19    r:puts("") 20 end
6%
Bare metal deployment with OpenStack
02.08.2021
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Photo by Anatolii Nesterov on Unsplash
: "16" name: "node1" # ipmitool -H -U -P raw 0x30 0x21 | tail -c 18 | sed 's/ /:/g' To avoid the password specified here appearing in the process list and history
6%
Graph database Neo4j discovers fake reviews on Amazon
04.08.2020
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Image by Gerd Altmann from Pixabay
similarity value of 1.0 to the two rascals. Of course, this is not yet hard evidence of unfair practices, but the result at least shows where you could drill down further to reveal more evidence
6%
Easy configuration management with Puppet
18.07.2013
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Warangkana Bunyarittongchai, 123RF
says: $ puppet apply .pp notice: Scope(Class[main]): Let's build a server! notice: Finished catalog run in 0.01 seconds Next, create a simple and largely useless file in the same script, drop
6%
Application-aware batch scheduler
26.03.2025
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Photo by Toby Elliott on Unsplash
://$APISERVER --deploy-mode cluster --name spark-wordcount --class org.apache.spark.examples.JavaWordCount local:///opt/spark/examples/jars/spark-examples_2.12-3.5.2.jar s3a://data/war-and-peace.txt watch kubectl get po
6%
Time-series-based monitoring with Prometheus
14.08.2017
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Lead Image © Juthamas Oonhawat, 123RF.com
of these is node_exporter [12], which reads and provides operating system metrics such as memory usage and network load. Meanwhile, a number of exporters [13] exist for a wide range of protocols and services
6%
Stopping Side Channel Attacks
16.10.2012
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as shown in the following listing. Apache/2.2.16 (Debian) DAV/2 SVN/1.6.12 mod_fcgid/2.3.6 Phusion_Passenger/3.0.11 mod_ssl/2.2.16 OpenSSL/0.9.8o Server at www.domain.tld Port 80 Treacherous Error Messages
6%
Security in the AWS cloud with GuardDuty
09.04.2019
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Lead Image © xcfoto, 123RF.com
backend "s3" { 07 region = "eu-west-1" 08 bucket = "chrisbinnie-terraformstate" 09 key = "guardduty.tfstate" 10 encrypt = true 11 } 12 } 13 14 resource "aws

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