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12:58, 3 April 2023 Plinich talk contribs uploaded File:Vlabgateway.png
12:58, 3 April 2023 Plinich talk contribs created page File:Vlabgateway.png
12:48, 3 April 2023 Plinich talk contribs created page VLAB (Created page with "'''VLAB''' (Virtual Lab) is a remote access virtual lab environment. It provides a virtual desktop environment that students and other users can access either via a VNC client (preferred) or via a web browser<ref>[https://vlabgateway.cse.unsw.edu.au/ https://vlabgateway.cse.unsw.edu.au/]</ref>. It is available 24/7, all year around. This environment should very closely parallel that which the students experience when using computers in CSE physical labs. The software...")
12:41, 3 April 2023 Plinich talk contribs uploaded File:Tigervnc prompt.png
12:41, 3 April 2023 Plinich talk contribs created page File:Tigervnc prompt.png
12:13, 3 April 2023 Plinich talk contribs deleted page Lifecycle management of accounts (Author request: content was: "#REDIRECT Lifecycle management of accounts (draft notes)", and the only contributor was "Plinich" (talk))
12:13, 3 April 2023 Plinich talk contribs moved page Lifecycle management of accounts to Lifecycle management of accounts (draft notes)
12:10, 3 April 2023 Plinich talk contribs deleted page Test page (Author request: content was: "Sandpit for experimentation Additional Some more Raggedy Connecting to Wifi")
12:09, 3 April 2023 Plinich talk contribs deleted page Linux namespaces and cgroups (Author request: content was: "This is rubbish and needs to be rewritten. Some text. The Linux kernel provides two interesting mechanisms to manage user sessions. Both play an important part in New World. These mechanisms are namespaces and cgroups. == Namespaces == See also <code>man unshare</code>. A user process can, if it chooses to look, see various elements of the h...", and the only contributor was "Plinich" ([[User t...)
12:39, 30 March 2023 Plinich talk contribs created page Kerberos (Created page with "'''Kerberos''' is a ticket-based network authentication system. Microsoft's Active Directory uses an implementation of Kerberos to allow users and network hosts to authenticate and access services. See [https://en.wikipedia.org/wiki/Kerberos_(protocol) Kerberos @ Wikipedia].")
12:35, 30 March 2023 Plinich talk contribs created page SMB3 (Redirected page to CIFS) Tag: New redirect
12:34, 30 March 2023 Plinich talk contribs created page CIFS (Created page with "See [https://en.wikipedia.org/wiki/Server_Message_Block Server Message Block @ Wikipedia].")
12:29, 30 March 2023 Plinich talk contribs deleted page CIFS (Broken redirect: content was: "#REDIRECT [https://en.wikipedia.org/wiki/Server_Message_Block]", and the only contributor was "Plinich" (talk))
12:27, 30 March 2023 Plinich talk contribs created page CIFS (Created page with "#redirect [https://en.wikipedia.org/wiki/Server_Message_Block]")
18:40, 29 March 2023 Plinich talk contribs created page /unsw (Created page with "The <code>/unsw</code> top-level directory on all user-loginable New World hosts is a file system mount point managed by the <code>autofs</code> automounter. When a user tries to access <code>/unsw/''zID''</code>, where <code>zID</code> is that same user's own UNSW zID, the automounter will attempt to mount that user's UNSW home folder ('''not''' CSE home directory) at that location. This gives the user transparent read/write access to their UNSW home folder from CS...")
16:09, 27 March 2023 Plinich talk contribs created page Experimental gitlab server (Created page with "# Host is called nw-syd-gitlab and is in <code>hostlist.csv</code> (cfengine) to reserve the IP address against use by anyone else # The IP address is 10.197.85.252. Due to it being in <code>hostlist.csv</code>, there will be an entry for it in <code>/etc/hosts</code> on all cfengine-managed hosts (i.e., login and VLAB servers, lab computers) # In AWS, set up the EC2 instance on the sydney-hosts subnetwork with free-for-all security group and 1TB of had disk # Af...")
09:30, 23 March 2023 Plinich talk contribs created page Ceph testing and development cluster (Created page with "== Overview == * The *Ceph testing and development cluster* is a desktop Ceph cluster built using old lab HP Elitedesk mini PC's * It is located in Peter's cubicle * The cluster itself is on a private subnetwork behind one of the PC's which functions as a gateway * The gateway is cephtest.cse.unsw.edu.au (129.94.173.173) and can be reached by SSH from CSE's trust. untrusted and server subnetworks * The cluster nodes should be listed in /etc/hosts on cephtest. The cluste...")
13:59, 27 October 2022 User account TechDocs talk contribs was created by Plinich talk contribs (Account for managing group watchlist emails)
13:48, 27 October 2022 User account TestDocs talk contribs was created by Plinich talk contribs (Account for group watchlist emails)
13:29, 27 October 2022 Plinich talk contribs created page Test page (Created page with "Sandpit for experimentation")
11:39, 24 October 2022 Plinich talk contribs created page Ceph (Created page with "== Overview of Ceph == [https://docs.ceph.com/en/quincy/ Welcome to Ceph]")
10:32, 24 October 2022 Plinich talk contribs uploaded File:Storage cluster sketch - concept.png
10:32, 24 October 2022 Plinich talk contribs created page File:Storage cluster sketch - concept.png
10:26, 24 October 2022 Plinich talk contribs created page Storage and compute cluster (Created page with "The ''storage and compute cluster'' is intended as a replacement for CSE's VMWare and SAN infrastructure. Its primary functions are: # A resilient, redundant storage cluster consisting of cheap<nowiki>[-ish]</nowiki> rack-mounted storage nodes running Linux and Ceph using local SSD drives, and # Multiple compute nodes running Linux and QEMU/KVM acting as both secondary storage nodes and virtual machine hosts. These compute nodes are similar in CPU count and RAM...")
14:21, 9 August 2022 Plinich talk contribs created page ZZEN9217 H6 O.S. Fundamentals for Security: VM platform notes (Created page with "* Testing on [AWS] nw-syd-vx[12] using QEMU in emulation mode rather than hypervisor/KVM mode * Images and scripts in /usr/local/qemu_machines + /usr/local/bin/start(win|kali) + /etc/sudoers.d/start(win|kali) * Installed qemu-system-x86 and bridge-utils packages * startkali: starts Kali Linux, includes second interface (eth1) for link to Windows XP host established via up/down scripts for QEMU which set up a bridge and join eth1 (tap device) to the bridge. On termination...")
15:18, 1 August 2022 Plinich talk contribs created page AWS IPsec links (Created page with "{| !AWS region !VPN name !VPN ID !Description !Customer gateway !Remote CIDR !Type !Tunnel 1 !Tunnel 2 !Comments |- |Sydney |aws-ipsec-to-k17 |vpn-0329f8fc12afa0c09 |cserouter1 |129.94.39.21 |0.0.0.0/0 |ipsec.1 |52.63.191.33 169.254.187.12/30 |52.64.121.168 169.254.38.88/30 |All tunnel options set to defaults at AWS end |- |Sydney |aws1 |vpn-0640a3802b05574e5 |vmfarm endpoint for testing |129.94.242.18 |172.16.254.0/24 |ipsec.1 |13.238.86.95 169.254.52.236/...")
13:59, 26 July 2022 Plinich talk contribs created page CSV (Created page with "'''CSV''' is a text file format used for representing field/record-type data. The <code>hostlist.csv</code> file uses s simplified form this format. See: [https://en.wikipedia.org/wiki/Comma-separated_values Comma-separated values file format]")
13:50, 26 July 2022 Plinich talk contribs created page Promises.cf (Created page with "Type: file Location: <code>/var/lib/cfengine3/inputs/promises.cf</code> on cfengine client hosts ALSO Location: <code>/var/lib/cfengine3/masterfiles/promises.cf</code> on the cfengine hub This file contains the configuration "promise" bundles used by <code>cf-agent</code>, <code>cf-execd</code> and <code>cf-serverd</code>. In short, the file tells <code>cf-agent</code> what to do.")
13:45, 26 July 2022 Plinich talk contribs created page /usr/local/warehouse (Created page with "Type: directory Location: cfengine hub The main directory on the hub from whose subdirectories <code>cf-agent</code> collects files (mostly configuration files) for installation on the hosts on which it runs. See also: <code>cf-serverd</code>")
13:40, 26 July 2022 Plinich talk contribs created page Update hosts (Created page with "Type: script Location: <code>/usr/local/administration/bin/update_hosts</code> on the cfengine hub. See: Host generator")
13:38, 26 July 2022 Plinich talk contribs created page Nodeinfo (Created page with "Type: file '''<code>nodeinfo</code>''' is an Old World configuration file used by conform. It is located at <code>/home/conform/config/cse/nodeinfo</code>. It primarily contains host information used to configure conformed hosts as well as to populate DNS zone files. <code>hostlist.csv</code> is very roughly equivalent in the New World although <code>hostlist.csv</code> is much simpler than <code>nodeinfo</code>.")
11:18, 26 July 2022 Plinich talk contribs created page Debian (Created page with "'''Debian''' is a common and standard Linux distribution. All New World hosts run Debian. See the [https://www.debian.org/ Debian website].")
11:14, 26 July 2022 Plinich talk contribs created page General description of installation of hosts with cfengine (Created page with "The installation of New World hosts follows a number of principles: # All hosts run Debian # cfengine is used to take a host from a minimally-installed Debian condition to CSE-usefulness<ref>Amongst other things, this "usefulness" refers to being able to access CSE's UDB, access home directories, have CSE-specific programs and tools installed, have a full list of CSE hosts and IP addresses in <code>/etc/hosts</code>, and have a full set of Debian package...")
16:47, 25 July 2022 Plinich talk contribs created page Debpkgsv2 (Created page with "I'm planning on replacing the original package install stuff for system packages with debpkgsv2 as we do the lab/login/VLAB hosts move for T3 so "debpkgsv2" will just disappear and become the norm. It appears stable now, but I'd like to see it work on lab computers to be sure. It's actually simple. One premise is that all initial installs -- be they in AWS, hosts using DHCP/preseed, or hosts with Debian boot DVD and no preseed (and even static IP address) -- can be SSH...")
15:37, 22 July 2022 Plinich talk contribs created page Installing an AWS VLAB server... and then adding PostgreSQL server and /localstorage (Created page with "# The AWS subnet ID will probably be nw-sydney-hosts. This determines the subnetwork address range. # On then cfengine hub, add an entry for the new host into <code>hostlist.csv</code> and run <code>update_hosts</code>. # On baton, add an entry for the host into <code>nodeinfo</code> and run <code>/home/ss/named_update</code>. # On AWS, create a new instance: #* Select the instance type, memory root disk size and additional disk and size, if required, for...")
13:24, 21 July 2022 User account Testuser talk contribs was created by Plinich talk contribs (Created by Peter for testing unprivileged access)
17:16, 18 July 2022 Plinich talk contribs moved page /usr/local/extrapackages to Extra packages
16:56, 18 July 2022 Plinich talk contribs moved page /usr/local/extrafiles to Extra files
16:22, 8 July 2022 Plinich talk contribs created page /usr/local/extrapackages (Created page with "<code>/usr/local/extrapackages</code> is a directory on New World, user login-able hosts which contains two types of Debian package lists: # Lists of packages to be installed (*.pkglist), and # Lists of packages to be removed (*.purge). * Each file is a list of package names, one per line, * The package names cannot contain the version - any that do will be ignored, * The packages will only be sourced from Debian's own repositories. No other repositories will b...")
15:36, 8 July 2022 Plinich talk contribs created page /localstorage (Created page with "Some New World user-loginable hosts have a directory, <code>/localstorage</code>, which is available to some or all users as un-backed up persistent storage. * On general login hosts, this additional storage will be a separate storage volume mounted at <code>/localstorage</code>. Per-user quotas apply in this case. * On hosts which are not general login -- for example, a host on someone's desk -- <code>/localstorage</code> will typically be just a directory on the r...")
15:26, 8 July 2022 Plinich talk contribs created page Extra (Created page with "Note: For "user login-able" read: New World (NW) lab computers, NW VLAB servers and NW login servers. {| |Extra storage (/localstorage) |Additional local, un-backed up, storage available on some user login-able hosts which is available to users of the host. |- |Extra packages |A Mechanism to allow teaching staff to add and remove Debian packages from all user login-able hosts without the involvement of CSG. |- |Extra files |A directory, <code>/usr/...")
16:40, 7 July 2022 Plinich talk contribs created page Monitoring framework (Created page with "The basic monitoring framework implemented in the New World infrastructure is designed to monitor and report on problems and faults with services or hosts AND to record historical performance data and provide graphing thereof. The framework is not intended to be fancy, but to provide a "standard" for adding monitoring for new services and/or hosts, and to provide a standard look-and-feel for web pages providing access to historical performance data. The nitty gritt...")
13:57, 7 July 2022 Plinich talk contribs created page Updating the MediaWiki software (Created page with " cd /usr/local tar zxf /root/downloads/mediawiki-<version>.tar.gz cd mediawiki-<version> rsync -va ../mediawiki/LocalSettings.php . systemctl stop apache2 cd .. rm mediawiki ln -s mediawiki-<version> mediawiki cd mediawiki cd maintenance/ php update.php systemctl start apache2")
15:07, 28 Haziran 2022 Plinich talk contribs created page Promises (Created page with "According to the cfengine documentation: ''A promise is the documentation or definition of an intention to act or behave in some manner. They are the rules which CFEngine clients are responsible for implementing.'' Or, in other words, a promise tells <code>cf-agent</code> what it should do. Note that <code>cf-agent</code> runs on the client hosts, typically once every five minutes (see <code>cf-execd</code>). Here are some examples: # Copy a file from the...")
12:20, 28 Haziran 2022 Plinich talk contribs created page Dpkg (Redirected page to Debian package management tools) Tag: New redirect
12:20, 28 Haziran 2022 Plinich talk contribs created page Apt-file (Redirected page to Debian package management tools) Tag: New redirect
12:20, 28 Haziran 2022 Plinich talk contribs created page Apt-cache (Redirected page to Debian package management tools) Tag: New redirect
12:20, 28 Haziran 2022 Plinich talk contribs created page Apt-get (Redirected page to Debian package management tools) Tag: New redirect
12:19, 28 Haziran 2022 Plinich talk contribs created page Apt (Redirected page to Debian package management tools) Tag: New redirect
12:19, 28 Haziran 2022 Plinich talk contribs created page Debian package management tools (Created page with "{| !Tool !Description !Notes |- |<code>apt</code> |From the <code>man</code> page: ''<code>apt</code> provides a high-level commandline interface for the package management system. It is intended as an end user interface and enables some options better suited for interactive usage by default compared to more specialized APT tools like <code>apt-get</code>(8) and <code>apt-cache</code>(8) | |- |style="white-space: nowrap;"|<code>apt-get</code> |From the <code>man</code> p...")

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