http://ssl.webangel.ie/ 2026-05-28T09:26:14+00:00 http://ssl.webangel.ie/ http://ssl.webangel.ie/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:ansible&rev=1759830220&do=diff Ansible Stuff Setting up clients setup Setting up Ansible clients Basic Stuff To run a syntax check on a playbock just use ansible-playbook --syntax-check change-password.yml Running Playbooks Playbooks Ansible playbooks text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:classnotes&rev=1759830220&do=diff Notes from Redhat classes and training link to classes Exam iso link exam iso instructions Setting up repos ---------- RH124 RH124- Red Hat System Administration I RH134- Red Hat System Administration II RRH294 - Red Hat Enterprise Linux Automation with Ansible DO080 - Containers, Kubernetes and Red hat OpenShift Technical Overview text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-commands&rev=1759830220&do=diff Linux Commands Link to site with loads of samples <http://linoxide.com/guide/linux-command-shelf.html> Creating Links Creating Links File system and Partition Management File System and Partition Management How to monitor and manage disks Yum commands Yum Cheat sheet Working with Sudo <https://www.digitalocean.com/community/tutorials/how-to-edit-the-sudoers-file-on-ubuntu-and-centos> great link for instructions and samples Process Checking Process Checking Networking Commands text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-firewalld&rev=1759830220&do=diff Linux Firewalld excellent link to firewalld from cert depot firewalld also good link from Redhat configuring Firewalld Checking the State You can see if the firewall is running by either querying the systemctl status firewalld or firewall-cmd --state you can also reload the firewall with the following command text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-hardening&rev=1759830220&do=diff Linux Hardening Here are the resources I used to harden the 2 serves at Eircom port information Excellent hardening guide need to upload Braum hardening document Securing Linux RHEL 8 Best Practices RedHat 8 Securing Linux RHEL 7 Best Practices There are enough differences in RHEL 7 that make the previous documents hard to follow. text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-networking&rev=1759830220&do=diff RHEL Networking Configuration There is poor documentation on the Internet about the various RHEL Networking aspects. Information is out there, but very disjointed, so I've gathered notes here, relevant to Meteor usages. RHEL 7 Networking RHEL7-Networking Sysconfig text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-san&rev=1759830220&do=diff Linux and Shared Storage There are many ways to have shared storage. This will only cover SAN attached storage for now. Using LVM LVM Linux and SANs Connecting to the SAN Linux servers can connect to SANs using 2 types of connectors. iSCSI and Fiber. text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-services&rev=1759830220&do=diff Linux Services NTP Settings up NTP VNC Settings up VNC NFS Settings up NFS SAMBA Settings up SAMBA FTP Settings up FTP text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:linux-ssh-passwd&rev=1759830220&do=diff Setting up Password Less sssh between 2 servers First create a user useradd data-sync then create the ssh key ssh-keygen -t rsa -b 2048 finally copy the key over to the other server. ssh-copy-id -i ~/.ssh/id_rsa.pub data-sync@other-server text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:openshift&rev=1759830220&do=diff OPenshift Trainning class for basics of openshift DO080 - Containers, Kubernetes and Red Hat OpenShift Technical Overview OCP upgrade Process open case with Redhat post upgrade list from Sean Openshift reboot node Reboot a Node Openshift errors and fixes Fixes Ansible errors and fixes Openshift Commands used text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:permissions&rev=1759830220&do=diff Linux Permissions Password settings You can set password expiry etc for individual users To check status of a userspassword chage -l username To set it to never expire chage -I -1 -m 0 -M 99999 -E -1 username or type chage username and set text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:sed&rev=1759830220&do=diff Sed Tutorial Sed tutorial part 1 text/html 2025-10-07T09:43:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://ssl.webangel.ie/doku.php?id=linux:selinux&rev=1759830220&do=diff Linux SElinux To manage booleans you need to ensure that policycoreutils-python is installed!“ Otherwise you do not have semanage and other tools yum install policycoreutils-python to list SELinux Contexts on files you need to use ls -Z Dealing with Booleans