Infrastructure

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Revision as of 14:08, 22 March 2016 by imported>Echarlie (→‎Linx)
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This page documents VTLUUG's infrastructure post-CVL eviction. It is intended as a scratch pad of sorts for organizing infrastructure changes, since Infrastructure:Log is incredibly out of date, and there are a lot of details which must be sorted out before major infrastructure changes can be made.

Physical Infrastructure

Cyberdelia is the only connected physical machine right now. It contains 48 GB of memory with 4 ethernet interfaces; only eth4 is connected and is attached to br0. All hosts are on the ECE network behind router.ece.vt.edu, a gateway featuring ARP proxying but no IPv6. For global DNS changes under ece.vt.edu, server room access, and getting hosts added to the ARP proxy, contact Branden McKagen.

Virginia Tech has started blocking inbound ports 22 and 3389 and outbound port 25 at the campus border, in a move some are calling Cyber Auschwitz. Contact itso-g@vt.edu for firewall exceptions. When deploying new hosts, make ssh listen on both 2222 and 22. Acidburn currently listens on 443 as well.

Most other VTLUUG-owned servers are currently stored in Ali's basement, with the exception of sunway and a SuperMicro server, which were all transferred to WUVT.

On the Network Architecture

Further Information: Infrastructure:Networking

Because VTLUUG infra no longer has IPv6 access, we are limited by the IP addresses assigned to us, and what we can get through DHCP from ECE. As a consequence, all services which do not need to have a global IP should move to the internal network on the 10.99.x.x/16 subnet. In the future, it may be wise to bridge this network to an ethernet port on cyberdelia, so that a switch can be used to network our other services. When we have rackspace to do so, VPN/Iodine access to the internal network will be necessary.

Services

Critical

Other (not all functional)

  • LAFS - Tahoe
  • Jitsi Meet
  • User websites
  • Diaspora*

Website details

Main article: Infrastructure:Milton, Infrastructure:Sczi

Current Setup

All vtluug websites are run on nginx on milton. These sites are currently functional:

  • gobblerpedia.org
  • hokieprivacy.org
  • linx.vtluug.org
  • snapchat.vtluug.org
  • vtluug.org
  • wiki.vtluug.org (this redirects to vtluug.org/wiki/)

All of these sites exclusively allow for the use of tls connections. Hokie Privacy has a cert from letsencrypt, while all other services are verified by StartCom.

Currently, milton has no startup script for the website. If things go down, someone has to run 

root@milton:/srv/http/vtluug.org# sudo -u www-data uwsgi --yaml uwsgi.yml

in a tmux session, to restart uWSGI. It is also unlikely that nginx will start properly because of weird dependencies.

Main Page

It currently appears that the main vtluug page (mostly written in php), is or was managed from Drupal as a backend, but for that to function, mysql needs to be running.

uWSGI, django, and PHP appear make up most of the important features of the website in unknown ways. This was configured by James at some point, we presume, but he is not available to provide more information on the set-up.

Wiki

The wiki currently runs fully on MediaWiki hosted on nginx (as opposed to the default include of apache2, demanded by the Debian package). Postgres is used for the database management, AFAIK, and authentication is through LDAP. MediaWiki is a dated git version from the stablerepository, as of March 2016, however updating is more complicated than a git pull

Gobblerpedia

All but disabled currently, due to spam. Runs on MediaWiki

Linx

Uses aam's linx, and is an identical implementation to his site linx.li. One of the few sites with a complete startup script. The maintenance is currently the responsibility of aam, however this is subject to change.

Historically

Beyond these, we have data and nginx configurations for these (deprecated) sites, which were previously hosted on milton:

Needs Restoration

These are VTLUUG services that haven't yet been properly restored:

  • foodfor.vtluug.org - For Wadsworth's .pickfood and .foodvote commands
  • tahoe.vtluug.org - mhazinsk's Tahoe-LAFS grid
  • git.vtluug.org - git hosting; previously a redirect to gitweb with gitosis as the SSH backend
  • gitweb.vtluug.org - git hosting; previously gitweb
  • map.vtluug.org - OSM
  • vtbash.org - VT QDB
  • users.vtluug.org - member hosting of acidburn home directories

Deprecated

These are no longer needed but we should preserve the data/config:

  • ccdc.vtluug.org - website used for the Collegiate Cyber Defense Competition in the spring of 2011.
  • nagios.vtluug.org - was used for monitoring for a period but not kept up-to-date; the primary issue was that infrastructure, being hosted on the same server, tended to fail all at once
  • uniluug.org - deprecated project
  • security.ece.vt.edu - REDACTED
  • wargame.vtluug.org - vtluug's wargame pre-vtcsec
  • munin.vtluug.org - former attempt at monitoring
  • webchat.vtluug.org - channel webchat; version of the service still runs on the vtluug website as an embeded frame from freenode's website
  • cdn.vtluug.org - member website
  • randynance.info - member website
  • jessicaandchristopher.net - member website
  • vtcybersecurity.org - member website from pre-csec days

Prior to the current site, which was written in Python using Django starting in 2010 and deployed in 2011, the VTLUUG website was a WordPress instance. The files for this still exist.

Additional files and configuration data exist for multiple versions of dokuwiki and mediawiki. There are also files for a NewsBlur installation which was never functional, and "bitcoin," the purpose of which is unknown.

For a time, a static version of vtbash.org was hosted at bash.vtluug.org.

Until recently, VTLUUG ran a Gopher server on Milton, with a small welcome page and access to /files. Git hosting was also provided; authenticated access was over SSH with gitosis and public access was via Gitweb and the insecure Git protocol.

vtluug.org/public/$user/ was previously a source directory of files placed in a user's $HOME/public directory on NFS. [When? I thought it was always users.vtluug.org?]

VTLUUG members also ran mirror.ece.vt.edu, although it was never an official VTLUUG project. The IPv4 allocation for this domain is still available.

Considerations for the future

It would be preferable to keep all existing sites functional. Aam suggested the use of caddy to replace nginx, especially on static sites, because it provides automatic letsencrypt.

It is also important to ensure there are startup scripts for sczi, so that a reboot of it doesn't result in a 10-hour website outage.

Encryption

All sites should move to automatic letsencrypt certificates within the next few months. letsencrypt is still in beta, but it provides fully functional and low-hassle 3-month certificates. They will have integration for nginx soon, which will decrease the complexity of getting certs.

It may also be of interest to the club to revive monkeysphere signing on the servers.

Project Hosting

Most vtluug internal projects (e.g. HokiePrivacy) are currently hosted on git repositories on milton. How to move forwards with these is still indeterminate.

For public hosting, there has been some conversation about using Go Git Service (gogs), for public, www-viewable git repositories.

Gobblerpedia

Gobblerpedia is effectively non-functional because account creation was disabled to prevent spam. This needs to be addressed by adding captchas which are Blacksburg-specific, limiting account creation access to local IP addresses, or enabling some form of LUUG-managed account creation. One suggestion was using CAS/Login services to authenticate, however that makes it difficult for Blacksburg residents to add content, and has other disadvantages.

VTLUUG Main Page

This needs to be kept up-to-date, and have some way of adding calendar information.

VTLUUG Wiki

Meeting creation script needs to be re-implemented.

Addressing

Main article: Infrastructure:Network

VTLUUG currently has DNS with namecheap, however all domains have been re-registered with gandi under vtluug's own account, to replace the mixture of mutantmonkey-holdings and vtluug-held domains on multiple different registrars.

https://linx.vtluug.org/ips1.txt

globally addressable ECE DNS Name fucntion internal address
128.173.88.78 luug.ece.vt.edu. sczi New webserver 10.99.0.27?? (Currently DHCP)
128.173.89.244 luug0.ece.vt.edu cyberdelia VM Host 10.99.0.1
128.173.89.245 luug1.ece.vt.edu. acidburn shell server 10.99.0.4
128.173.89.246 luug2.ece.vt.edu. milton Old webserver 10.99.0.2
128.173.89.247 luug3.ece.vt.edu. razor LDAP 10.99.0.15
128.173.88.104 mjh.ece.vt.edu./luug4.ece.vt.edu akhaten currently pfsense (global v4 subject to change - IP belongs to mhazinsk) 10.99.0.104
128.173.88.36 mirror.ece.vt.edu. mirror not in use
128.173.88.191 luug5.ece.vt.edu. router not in use
172.xx.xx.xx snapfeed REDACTED
pfsense/443 jitsi.vtluug.org jitsi Jitsi 10.99.0.101 (static lease)
None 172.16.10.13 archiveteam-warrior Archive Team Warrior

Deprecated IPs

IPs we were using at some point (by reclaiming CVL IPs, etc), or are mentioned in /etc/exports on Cyberdelia

  • 128.173.88.161 (security.ece.vt.edu) - was once milton's IP until luug IPs got routed behind router.ece.vt.edu.
  • 128.173.88.145 (cvl05.ece.vt.edu) - was once snapfeed's IP, reclaimed by bmckagen.
  • 128.173.88.131 (dog.ece.vt.edu) - we have a Sun box labeled "dog.ece.vt.edu" but the IP appears to be in use now for VMware ESXi. It can be arped from cyberdelia.

Network Diagram

This is the projected diagram of our network, once sczi is fully deployed and milton is phased out. At this time, razor may also lose its global v4 address. Infra2016-network.png

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