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sysadmin [2020-05-23 12:05]
tim [Sysadmin]
sysadmin [2020-06-02 21:36] (current)
tim [More Pages]
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 ====== System Administration ====== ====== System Administration ======
-This page will describe how we organise ourselves to operate ​the lab's network and server infrastructure.+At the time of writing, most of Hacklab's network and server infrastructure ​is maintained by two people. At least one of them wants an escape plan. We need a bigger sysadmin team.
-===== Categories ​=====+===== What do we maintain? ​=====
-We separate administration into categories based on the level of security required. This is so that we can make a trade-off between including more interested members vs restricting ​access ​to sensitive data or highly critical systems.+  * Internet connection 
 +  * Core network router and switches 
 +  * WiFi access 
 +  * Rack space and network service for member colo servers 
 +  * Virtual machines for members 
 +  * DNS & DHCP 
 +  * Members registration and authentication 
 +  * Access management (doors, tools and lockers) 
 +  * Shared services: shell, file storage, nextcloud 
 +  * Mailing lists
-| Internet of Things | Lights, sound, automation ​                          | Inclusive ​          | +===== What don't we maintain? =====
-| General Systems ​   | Public-facing webapps ​                              | Moderate ​           | +
-| Network ​           | Router, firewall, switches, cabling, DNS, DHCP      | Slightly restricted to manage risk of outage | +
-| Personal Data      | Members database, home directories,​ netflow records, access control | Restricted to meet legal obligations |+
-===== Network =====+  * Hacklab email - this is currently hosted on 
 +  * Domain registration - this is closely guarded. 
 +  * Internet of Things at the lab - this is a free-for-all. 
 +  * Members'​ servers - these are community-supported,​ or private.
-https://​​mailman/​listinfo/​netadmin+===== Communications =====
-There is a netadmin unix group which provides access to network-infrastructure VMs and webapps.+There is a //​sysadmin//​ mailing list. We also use the main Hacklab IRC channel.
-There is a network password for router and switch access.+Users can reach us at //​sysadmin//​ at our usual domain.
-===== Sysadmin ​=====+===== Access Privileges ​=====
-​mailman/​listinfo/​sysadmin+NetworkThe //netadmin// LDAP group provides access to network-related serversThere is a network password for the router, switches, UniFi controller and anything else that doesn'​t have LDAP user management.
-There is a sysadmin ​unix group which provides ​access to most Linux servers.+Servers: The //sysadmin// LDAP group will provide ​access to most other servers, with some sensitive systems excluded. There is a standard root password, but this is only used for console access and is generally disabled for SSH logins.
-There is a standard root password for most Linux servers, though it is likely to be disabled over SSH in favour ​of SSH keys.+Team members will be expected to agree to the code of conduct before getting any privileges and may not receive all privileges immediately.
-===== Restricted Access ​=====+===== Code of Conduct ​=====
-These are the currently restricted services:+We adopt the [[https://​​system-administrators-code-ethics|System Administrators'​ Code of Ethics]].
-  * ehl-vm-access: +Of particular interest:
-    * Access control for doors, tools and lockers. +
-    * Hosted on magnesium. +
-    * Available to sysadmin unix group. +
-  * ehl-vm-admin:​ +
-    * Members database +
-    * Hosted on magnesium. +
-    * Available to sysadmin unix group. +
-  * ehl-vm-audit:​ +
-    * Netflow, syslog, mqtt logs. 30 day retention. +
-    * Hosted on Tim's server. +
-    * Available to Tim. +
-  * magnesium:​ +
-    * Bare-metal VM server. +
-    * Contains VMs with personal data, and VM that belong to individual members. +
-    * Available to sysadmin unix group. +
-  * ganymede and shell server: +
-    * Home directories. +
-    * Hosted on magnesium. +
-    * Available to sysadmin unix group.+
-Tim's commentary: ​would like to restructure these services so that the sysadmin team can be more inclusive. The members database ​will be moved to an external VM. I would like to adjust the expectations of privacy for home directories and members VMs so that more people ​can administrate the underlying host (magnesium).+> "will maintain professional conduct in the workplace and will not allow personal feelings or beliefs ​to cause me to treat people ​unfairly or unprofessionally."
-===== Conduct =====+This means use your powers only for good. You must not use them to annoy people.
-What behaviour do we expect from members with access ​privileges?+> "I will access ​private information on computer systems only when it is necessary in the course of my technical duties. I will maintain and protect the confidentiality of any information to which I may have access, regardless of the method by which I came into knowledge of it."
-  * Respect personal data by only accessing it when legally or technically necessary, or when requested by the owner. +This is important because ​the sysadmin team has access to users' ​VM and stored data, and to personal data entrusted to the organisation.
-  * Act in good faith. +
-  * Co-operate with other group members. Don't change ​the technology choices or methods without discussing first.+
-Should we adopt an existing code of conduct?> "I will strive to ensure the necessary integrity, reliability,​ and availability ​of the systems for which I am responsible.
 +> "I will design and maintain each system ​in a manner to support the purpose of the system to the organization."​
 +This means that we need to co-operate as a team. The services we create should be maintainable after the person who created them has moved on. Technology choices should be shared.
 +===== Technical Policies =====
 +Server naming:
 +  * Bare-metal servers are named after chemical elements.
 +  * VMs are named functionally,​ in the format ehl-vm-xxxxxxx.
 +Configuration management:
 +  * There is an [[https://​​hacklab/​ansible-hacklab-server|ansible profile]] for low-level configuration.
 +  * Use Docker for applications unless they are complex and require a dedicated host.
 +===== More Pages =====
 +  * [[servers|List of servers]]
 +  * [[network|Network]]
 +  * [[private:​sysadmin_todo|Projects and Issues]]
 +  * [[wifi|WiFi]]
 +  * [[dnsdhcp|DNS and DHCP]]
 +  * [[ehana|Numbering]]
 +  * https://​​
 +Pages under sysadmin:*
 +<nspages sysadmin -h1 -textPages=""​ -simpleList>​
sysadmin.1590235534.txt.gz · Last modified: 2020-05-23 12:05 by tim