Dron's thoughts attic

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https://www.linode.com/docs/tools-reference/linux-system-administration-basics/

https://www.inmotionhosting.com/support/website/server-usage/using-the-linux-top-command-in-batch-mode

https://serverfault.com/questions/190049/find-out-which-task-is-generating-a-lot-of-context-switches-on-linux

https://serverfault.com/questions/898064/centos-7-ldap-authentication-su-works-but-ssh-console-login-not-works

http://alvarom.com/2014/08/25/profiling-applications-on-linux/

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/performance_tuning_guide/s-cpu-irq

https://www.linkedin.com/pulse/server-performance-tuning-interrupt-process-affinity-cpu-kumar

https://stackoverflow.com/questions/17565829/bash-kill-not-work

https://www.linuxcnf.com/2018/11/how-to-change-default-mta-in-cent-os-7.html



==== Networking ====

http://ask.xmodulo.com/configure-static-ip-address-centos7.html

[[https://websiteforstudents.com/configure-static-ip-addresses-on-ubuntu-18-04-beta/| Ubuntu 18 netplan iface config]]

https://wiki.debian.org/ru/NetworkConfiguration

[[https://wiki.centos.org/FAQ/CentOS7#head-8984faf811faccca74c7bcdd74de7467f2fcd8ee| disable IPv6 on CentOS]]

https://superuser.com/questions/710253/allow-non-root-process-to-bind-to-port-80-and-443

[[https://habr.com/ru/post/331720/|Тюнинг сетевого стека Linux для ленивых]]

== -  net commands replacement ==

https://dougvitale.wordpress.com/2011/12/21/deprecated-linux-networking-commands-and-their-replacements



== -  Turbo-boost, cpufreq, tuned etc ==
https://askubuntu.com/questions/800797/how-to-enable-turbo-boost

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/power_management_guide/tuning_cpufreq_policy_and_speed

[[https://www.centos.org/forums/viewtopic.php?t=56409|Problems with CPU frequency]]

https://wiki.mikejung.biz/CentOS_7#Activate_tuned_latency-performance_for_CentOS_7

https://www.certdepot.net/rhel7-get-started-cpu-governor/

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/power_management_guide/tuned

https://unix.stackexchange.com/questions/164100/centos-7-cpupower-not-setting-the-cpus-to-maximum

https://www.servernoobs.com/avoiding-cpu-speed-scaling-in-modern-linux-distributions-running-cpu-at-full-speed-tips/

https://community.mellanox.com/s/article/how-to-set-cpu-scaling-governor-to-max-performance--scaling-governor-x

https://www.kernel.org/doc/html/v4.12/admin-guide/pm/intel_pstate.html






== Selinux ==
https://www.cyberciti.biz/faq/redhat-install-semanage-selinux-command-rpm/


== yum ==
[[https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/deployment_guide/sec-using_yum_variables|Using yum variables]]

== journald ==
https://unix.stackexchange.com/questions/139513/how-to-clear-journalctl