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15%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alterfalter, 123RF.com
check_interval 5 12 retry_interval 1 13 contacts spz_admin 14 notification_period 24x7 15
15%
Speed up your MySQL database
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Mikhail Dudarev, 123RF.com
7115280 Sep08 13:00 mysqld VSZ : The memory requested from the operating system by the process (virtual size). RSS : The memory kept in RAM by the operating system (resident set size
15%
Correctly integrating containers
09.10.2017
Home »  Archive  »  2017  »  Issue 41: Kuber...  » 
Lead Image © Beboy, Fotolia.com
": "cni0", 08 "ipam": { 09 "type": "host-local", 10 // ipam specific 11 "subnet": "10.1.0.0/16", 12 "gateway": "10.1.0.1" 13 }, 14 "dns": { 15 "nameservers": [ "10.1.0.1" ] 16
15%
Docker image security analysis
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Photo by Rodolfo Sanches Carvalho on Unsplash
                  whoami ls -al /usr/share/nginx      root      total 12            drwxr-xr-x 3 root root 4096 Feb 6 08:11 .            drwxr-xr-x 1 root root 4096 Feb 18 13
15%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
the Buffer 01 [global] 02 ioengine=libaio 03 direct=1 04 filename=testfile 05 size=2g 06 bs=4m 07 08 refill_buffers=1 09 10 [write] 11 rw=write 12 write_bw_log 13 14 [read] 15 stonewall 16 rw=read 17 write
15%
A Btrfs field test and workshop
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Adrian Hillman, 123RF.com
(depending on the RAID level). These chunks are usually 1GB for data and 256MB for metadata. One exception is the first metadata chunk, which mkfs.btrfs creates 1GB in size, assuming there is enough space
15%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
.5 MiB/s ( 79.7 Mbit/s) 256 KiB blocks: 53.9 IO/s, 13.5 MiB/s (113.1 Mbit/s) 512 KiB blocks: 39.8 IO/s, 19.9 MiB/s (166.9 Mbit/s) 1 MiB blocks: 33.3 IO/s, 33.3 MiB/s (279.0 Mbit/s) 2 Mi
15%
Building Virtual Images with BoxGrinder and VMBuilder
07.01.2013
Home »  Articles  » 
 
 for Scientific Linux 09 10   Available platform plugins: 11    - vmware plugin for VMware 12    - ec2 plugin for Amazon Elastic Compute Cloud (Amazon EC2) 13    - virtualbox plugin for VirtualBox 14    - virtualpc
15%
Infrastructure as Code with Terraform
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
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
15%
Connecting dissimilar IPsec implementations
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© Yuri Arcurs, 123RF.com
dh_group modp1024; 09 } 10 generate_policy off; 11 } 12 13 sainfo address 192.168.2.0/24 any address 172.16.0.0/16 any { 14 pfs_group modp1024; 15 encryption_algorithm aes256; 16

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