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25%
Customizing PortSentry
30.03.2012
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INPUT -s $1 -j DROP /usr/bin/logger "portsentry: Removed the ban for IP: $1" exit 0 fi # Otherwise ban permanently exit 0 The second script is fired by Cron every 10 minutes (obviously, that
25%
Coordinating distributed systems with ZooKeeper
07.10.2014
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Lead Image © smileus, 123RF.com
of the naming, grouping, or configurations of the menagerie. Thanks to ZooKeeper [1], which is available under the Apache 2.0 license, not every cluster has to provide a synchronization service itself
25%
Single sign-on like the big guys
20.06.2022
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Lead Image © Sergey Nivens, 123RF.com
Once your set of internal applications grows greater than an order of 10s, you can end up in a scenario where credentials storage for each service gets out of control. Users might start complaining
25%
Rancher manages lean Kubernetes workloads
20.06.2022
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Lead Image © Sebastian Duda, 123RF.com
://get.k3s.io | sh -s - server --datastore-endpoint="mysql://rancher:secret@tcp(10.42.0.1:3306)/rancher" Of course, the command specified here will only work if the system has direct access to the Internet
25%
Linking Kubernetes clusters
07.04.2022
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Lead Image © choreograph, 123RF.com
the cluster in AWS. Figure 1 shows the infrastructure with this setup. On the AWS side, IP addresses are assigned from the 10.11.0.0/16 subnet. The Kubernetes cluster itself needs service addresses from a non
25%
OpenLDAP Workshop
11.06.2014
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Lead Image © tiero, 123RF.com
# replace: olcRootDN 07 dn: olcDatabase={2}bdb,cn=config 08 changetype: modify 09 replace: olcRootPW 10 olcRootPW: {SSHA}f0pv70XFFox5UqKc6A4Uy39NcxkqcJbc 11 - 12 replace: olcAccess 13 olcAccess: {0}to attrs
25%
Goodbye cloud VMs, hello laptop VMs
20.06.2022
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Lead Image © Liubomyr Feshchyn, 123rf.com
to the launch command. For example, the command multipass launch -n mycloudvm -c 2 -m 2G -d 10G --timeout 600 Table 1 Multipass launch Argument Action (v1.8.0 default) -n
25%
Predicting Drive Doom
20.10.2013
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://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: Samsung SSD 840 Series Serial Number: S19HNSAD620517N LU WWN Device Id: 5 002538 5a005092e Firmware Version: DXT08B0Q User Capacity: 120,034,123,776 bytes
25%
Netcat – The Admin’s Best Friend
20.08.2012
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the port after the file transfer has completed (but not without moving to the netcat-traditional package, as mentioned before): { echo -ne "HTTP/1.0 200 OK\r\n\r\n"; cat filename.tar.gz; } | nc -l -p 15000
25%
Netcat – The admin's best friend
31.10.2025
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© Dmitry Rukhlenko, 123RF.com
): { echo -ne "HTTP/1.0 200 OK\r\n\r\n"; \ cat filename.tar.gz; } | nc -l -p 15000 Be warned that this might not work for you, but with some trial and error, to enable some extra interaction, you could try

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