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13%
Network monitoring with Icinga and Raspberry Pi
17.02.2015
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Lead Image © AndreaDanti, 123RF.com
use generic-service 21 host_name w2k12srv 22 service_description Memory Usage 23 check_command check_nt!MEMUSE!-w 80 -c 90 24 } 25 define service{ 26
13%
Fast system management from Puppet Labs
30.11.2025
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© Artmann Witte, fotolia.com
="http://activemq.apache.org/schema/core" brokerName="localhost" useJmx="true"> 10 11 12 13 14 15
13%
Monitor Your Nodes with collectl
28.03.2012
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and modified one line in /etc/collectl.conf by adding a little to the default statistics monitored. The line in /etc/collectl.conf is: DaemonCommands = -f /var/log/collectl -r00:00,7 -m -F60 -s+YZCD --iosize
13%
Setting up SSL connections on Apache 2
18.07.2013
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pnphoto, 123RF
cryptography), in which each party has two keys. To create a certificate, you must first generate a private key for the server: openssl genrsa -aes256 -out privaterschluessel.pem 2048 The key length is 2048
13%
Mandatory access control with Tomoyo Linux
30.11.2025
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© 3drenderings, 123RF.com
.0 2.2.x. 2.6.30 through 2.6.35 Debian 6 (Squeeze) 2.3.x. 2.6.36 through 3.0 Ubuntu 11.10 2.4.x. 3.1. openSUSE 12.1 2.5.x. 3
13%
Infrastructure as Code with Terraform
18.02.2018
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Lead Image © Sebastian Duda, 123RF.com
public_key = "${file("${var.ssh_pub_key}")}" 07 } 08 resource "digitalocean_droplet" "mywebapp" { 09 image = "docker-16-04" 10 name: guest 11 region = "fra1" 12 size = "512mb" 13 ssh
13%
Sort out your SSH configs
07.10.2014
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Lead Image © saniphoto, fotolia.com
, you should see the client config file ssh_config, which I'll get to a little later. If you've just installed the SSH server and want to be sure that it's listening, you can use the command lsof -i :22
13%
Automating development environments and deployment with Otto
11.02.2016
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Lead Image © baloncici, 123RF.com
] and unpack to your hard disk, revealing the lightweight otto program, which weighs in at just 15MB. Although you can call it directly – there is no need to install – HashiCorp does recommend adding otto
13%
Bare metal deployment with OpenStack
02.08.2021
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Photo by Anatolii Nesterov on Unsplash
:13 ipa.initramfs.sha256 13 -rw-r--r-- 1 42422 42422 9.1M Mar 2 10:13 ipa.kernel 14 -rw-r--r-- 1 42422 42422 101 Mar 2 10:12 ipa.kernel.sha256 15 16 # file /var
13%
News for Admins
30.05.2021
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Linux will be a community-based 1:1 binary replacement for Red Hat Enterprise Linux and currently ships with Gnome 3.32, Linux kernel 4.18.0-240.22.1.el8, SQLite 3.26, virt-what 1.18, Samba 4.12.3, DNF 4

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