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15%
OpenStack Sahara brings Hadoop as a Service
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © RFsole, Fotolia.com
with Sahara, it automatically leads to starting three groups: master, core workers, and workers. Sahara sets how many VMs belong to these groups dynamically at run time when called for by the administrator
15%
Using the MQTT IoT protocol for unusual but useful purposes
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Heiko Küverling, 123RF.com
name strings in UTF-8 with a length up to 64KB, and they resemble Unix paths. Unlike path names, topics do not start with a leading forward slash. For example – staying with the Internet of Things (Io
15%
Encrypted backup with Duplicity
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Boing, Photocase.com
turns out to be a full-featured backup tool. Although you can quickly and easily back up a single directory, more complex situations require more parameters, which can lead to a very complex command line
15%
Transparent SIP communication with NAT
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © studiom1, 123RF.com
, redirecting all traffic through the TURN server places a heavy load on the server. Therefore, TURN should only be considered as a last resort if other methods like STUN do not lead to success. ICE
15%
DebOps delivers easy Ansible automation for Debian-based systems
26.10.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image © Nuno Andre, 123RF.com
. The preceding file would thus lead to generic tasks that are not assigned to a specific group running on all three hosts. You could also use precisely this file combine server groups for DebOps, which simplifies
15%
NAS with Btrfs-based Rockstor
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Photo by Lane Smith on Unsplash
on the name of a data carrier leads to numerous diagnostic statistics, which you can use to detect defects and estimate the service life of your disks. Figure 3
15%
Jira, Confluence, and GitLab
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Lead Image © Iaroslav Neliubov, 123RF.com
database for Confluence. If you want, you can connect GitLab and Jira so that GitLab commits lead to log entries in Jira issues; also, Jira tickets can be referenced directly in Confluence pages. All
15%
Plundering treasures with Gitrob
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image © pip, photocase.com
with a private SSH key mentioned, any of which could potentially lead you to a functioning SSH key! Again, many code snippets are referencing dummy keys and the like, but that's lots of room to find mistakes
15%
Securing containers with Anchore
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © loiic, Fotolia.com
images each boast at least 30 vulnerabilities, with node leading the way. The report, which I would recommend reading carefully and in detail, reveals some frightening information. For example, you might
15%
Shell practice: Introduction to the sed stream editor
09.08.2015
Home »  Archive  »  2015  »  Issue 28: SSD RAID  » 
Lead Image © Dmitriy Sladkov, 123RF.com
. Figure 16: Formatting dates. The list is read in the first line and the following lines each pipe their output to the next command: Take any present leading space characters and substitute the number

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