====== Linux Wiki ======
{{ linuxversions.jpg?nolink&150|}}

===== Desktop =====
<columns 100% 50% 50%>
  * [[ Citrix Receiver (Debian/Ubuntu) ]]
  * [[ CrashPlan Adopt New Computer|CrashPlan: Adopt New Computer ]]
  * [[ GNOME 3 Login Pop Ups ]]
  * [[ Google Drive Client (Ubuntu) ]]
  * [[ Open in Terminal (Ubuntu) ]]
  * [[ Cinnamon Screen Tear Fix (Mint)|Screen Tear Fix (Cinnamon) ]]
  * [[ Screen Tear Fix (Debian) ]]
  * [[ Screen Tear Fix (KDE) ]]

<newcolumn>
  * [[ Send Message To Users X11 ]]
  * [[ SSH Proxy Tunnel ]]
  * [[ Steam Controller ]]
  * [[ Virtualbox USB Devices Not Recognized|Virtualbox: USB Devices Not Recognized ]]
  * [[ VSCode Editor ]]
  * [[ Wireless Driver - ASUS USB-AC56 ]]
  * [[ zsh and oh-my-zsh ]]

</columns>

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===== DevOps =====

<columns 100% 33% 33%>
==== AWS ====
  * [[ Lambda Python Function|Lambda: Python Function ]]

<newcolumn>
==== Jenkins ====
  * [[ Jenkins Multibranch Pipeline|Multibranch Pipeline]]
  * [[ Pipelines ]]
  * [[ Shared Libraries ]]
  * [[ Jenkins Webhooks|Webhooks]]

<newcolumn>
==== GitLab CI ====
  * [[ Managed GitLab CI Python Example|Managed GitLab CI: Python Example ]]

</columns>

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===== Scripting =====

<columns 100% 33% 33%>
==== FreeIPA ====

Migrating to FreeIPA
  * [[ FreeIPA Audit User Migration ]]
  * [[ python_wiki:freeipa_import_group_memberships| FreeIPA Import Group Memberships ]]
  * [[ FreeIPA Migrate Rollback to LDAP ]]
  * [[ FreeIPA Migrate to IPA Domain ]]

Client Side
  * [[ FreeIPA Client Enroll ]]
  * [[ FreeIPA Client Remove ]]

Server Side: Cron Jobs
  * [[ FreeIPA Backup IPA Data ]]
  * [[ FreeIPA Report Password Expiry ]]
  * [[ FreeIPA Report Users Disabled ]]

Server Side: Ad Hoc Scripts
  * [[ FreeIPA Config Anonymous Binds ]]
  * [[ FreeIPA Report Access Host ]]
  * [[ FreeIPA Report Access User ]]
  * [[ FreeIPA Report Host Groups Empty ]]
  * [[ FreeIPA Report Hosts Not Responding ]]
  * [[ FreeIPA Report Hosts Ungrouped ]]
  * [[ FreeIPA Report LDAP Config ]]
  * [[ FreeIPA Report UIDs GIDs ]]
  * [[ FreeIPA Report User Groups Empty ]]
  * [[ FreeIPA User Add ]]
  * [[ FreeIPA User Password Reset ]]

<newcolumn>
==== Misc ====
  * [[ Amazon Product Page Checker ]]
  * [[ Arch Linux Post Install Config ]]
  * [[ Bash Scripting Snippets ]]
  * [[ Command Many Systems Part1 Basics|Command Many Systems: Part1 Basics ]]
  * [[ Command Many Systems Part2 Send Cmd|Command Many Systems: Part2 Send Cmd ]]
  * [[ CrashPlan UI Config ]]
  * [[ Crontab Entry Status ]]
  * [[ rhnreg fix ]]
  * [[ rsync backup script ]]
  * [[ Security Lockdown|Security Lockdown (CIS) ]]
  * [[ Send Email via Gmail SMTP Cmd Line ]]
  * [[ Systemd Service Script|Services: Systemd Service ]]
  * [[ SysVInit Service Script|Services: SysVInit Service ]]
  * [[ Template Bash Script|Template: Bash Script ]]
  * [[ Update Repo ]]
  * [[ Xymon CPU Load Threshold Calc|Xymon: CPU Load Threshold Calc ]]

<newcolumn>
==== Spacewalk ====
Spacewalk scripts maintained here: https://github.com/wdhowe/spacewalk

  * [[ python_wiki:spacewalk_describe|Spacewalk Describe ]]
  * [[ Spacewalk Force Client Check In ]]
  * [[ python_wiki:spacewalk_list_groups|Spacewalk List Groups]]
  * [[ Spacewalk Reboot Check ]]
  * [[ Spacewalk Register ]]

</columns>

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===== System Administration =====

<columns 100% 33% 33%>
==== AWS ====
  * [[ CFT Deploy via CLI|CFT: Deploy via CLI ]]
  * [[ EC2 Create AMI Templates|EC2: Create AMI Templates ]]
  * [[ EC2 ECR Credential Helper|EC2: ECR Credential Helper ]]
  * [[ EC2 SSH Access|EC2: SSH Access ]]
  * [[ EC2 Web Portals on Private Instances|EC2: Web Portals on Private Instances ]]

<newcolumn>
==== Database ====
  * [[ MySQL MariaDB Cacti|MySQL/MariaDB/Cacti PW Reset ]]
  * [[ Redis ]]

<newcolumn>
==== Development ====
  * [[ Docker Image Devel|Docker: Image Devel ]]
  * [[ Python ]]
  * [[ RPM Building ]]

</columns>

<columns 100% 33% 33%>
==== Networking ====
  * [[ DNS Load Balancing ]]
  * [[ Persistent Interface Name ]]
  * [[ Static IP ]]
  * [[ VLAN Tagging ]]

<newcolumn>
==== Management ====
  * [[ Ansible ]]
  * [[ Ansible-Pull ]]
  * [[ Ansible AWX|Ansible AWX (Tower) ]]
  * [[ Ansible Playbook Downloads ]]
  * [[ FreeIPA Accounts ]]
  * [[ Spacecmd (Spacewalk Cmd Line) ]]
  * [[ Spacewalk ]]
  * [[ Terraform ]]
  * [[ Urbackup Server and Client ]]

<newcolumn>
==== Messaging ====
  * [[ ActiveMQ ]]
  * [[ RabbitMQ ]]

</columns>

<columns 100% 33% 33%>
==== Monitoring ====
  * [[ Net-SNMP ]]
  * [[ Temperature Monitoring ]]

<newcolumn>
==== Network Shares ====
  * [[ Auto Mount Network Shares ]]
  * [[ CIFS (Windows) Shares ]]
  * [[ NFS Shares ]]

<newcolumn>
==== OS Config ====
  * [[ Aliases|Aliases (get roots mail) ]]
  * [[ bash history ]]
  * [[ Cron ]]
  * [[ File Descriptors ]]
  * [[ File System Hierarchy ]]
  * [[ Fonts ]]
  * [[ Grub1 ]]
  * [[ Grub2 ]]
  * [[ GUI Desktops ]]
  * [[ Init Systems ]]
  * [[ Kernel Tuning ]]
  * [[ Library Paths ]]
  * [[ Log Rotate ]]
  * [[ NTP ]]
  * [[ OOM Killer ]]
  * [[ Repos ]]
  * [[ Remote GUI Desktops ]]
  * [[ Rsyslog ]]
  * [[ Swap Files ]]
  * [[ systemd logging ]]

</columns>

<columns 100% 33% 33%>
==== OS Installs ====
  * [[ OS Install Bare Metal ]]
  * [[ OS Install Kickstart ]]
  * [[ OS Install Post Install ]]
  * [[ OS Install PXE Boot ]]
  * [[ OS Install VM Template ]]

<newcolumn>
==== Security ====
  * [[ Broken Links to Executables ]]
  * [[ ClamAV ]]
  * [[ Firewall Firewall-Cmd ]]
  * [[ Firewall IPTables ]]
  * [[ SSH Pub/Priv Keys ]]
  * [[ Sudoers ]]

<newcolumn>
==== Storage ====
  * [[ GlusterFS ]]
  * [[ iSCSI ]]
  * [[ Logical Volume Management (LVM) ]]

</columns>

<columns 100% 33% 33%>
==== Troubleshooting ====
  * [[ Df Permission Denied ]]
  * [[ High System Load ]]

<newcolumn>
==== Virtualization ====
  * [[ Docker|Docker: Install ]]
  * [[ Kernel-based Virtual Machine (KVM) ]]
  * [[ Podman Install|Podman: Install ]]
  * [[ VMware Tools ]]

<newcolumn>
==== Web ====
  * [[ Apache HTTP Server ]]
  * [[ Load Balancing HAProxy and Keepalived ]]
  * [[ Memcached ]]
  * [[ Nginx HTTP Server ]]
  * [[ SSL Certificates ]]
  * [[ Squid Proxy ]]
  * [[ Webserver Security Verification ]]

</columns>

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===== System Tools =====
<columns 100% 33% 33%>
  * [[ apt ]]
  * [[ awk ]]
  * [[ dd ]]
  * [[ ddclient ]]
  * [[ ethtool ]]
  * [[ find ]]
  * [[ git ]]
  * [[ gzip ]]
  * [[ ionice|ionice (delete large files) ]]

<newcolumn>
  * [[ iperf ]]
  * [[ kill ]]
  * [[ less ]]
  * [[ logger ]]
  * [[ nc|nc (netcat) ]]
  * [[ openssl ]]
  * [[ rpm ]]
  * [[ rsync ]]
  * [[ sar ]]

<newcolumn>
  * [[ sed ]]
  * [[ screen ]]
  * [[ sleep ]]
  * [[ svn ]]
  * [[ tar ]]
  * [[ tcpdump ]]
  * [[ tmpwatch ]]
  * [[ tmux ]]
  * [[ yum ]]

</columns>

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===== Certifications =====

  * [[rhcsa|Red Hat Certified System Administrator (RHCSA)]]
  * [[rhce|Red Hat Certified Engineer (RHCE)]]

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===== External Resources =====
  * [[https://access.redhat.com/documentation/en/red-hat-enterprise-linux/|Documentation: RHEL]]
  * [[https://help.ubuntu.com/|Documentation: Ubuntu]]
  * [[http://www.emailtextmessages.com/|E-mail to SMS Address List]]
  * [[https://access.redhat.com/articles/3078|RHEL OS & Kernel Release Dates]]
  * [[https://access.redhat.com/support/policy/updates/errata/|RHEL OS Lifecycle]]
  * [[https://lists.centos.org/pipermail/centos-announce/|Security: CentOS Announce Archives]]
  * [[https://access.redhat.com/security/security-updates/#/|Security: RHEL CVEs]]

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