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Shimmer: Difference between revisions

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===Shell===
===Shell===
All HacDC members are welcome to non-root shell accounts, directly provided by the server, and used to manage Xen VMs.
All HacDC members are welcome to non-root shell accounts, directly provided by the server, and used to manage Xen VMs.
===Xen===
===OpenVZ===
All HacDC members are welcome to Xen Virtual Machines. Resources, including CPU, disk space, and external network ports, will be allocated on an as-needed first-come-first-serve basis.
All HacDC members are welcome to OpenVZ Virtual Machines. Resources, including CPU, disk space, and external network ports, will be allocated on an as-needed first-come-first-serve basis.


Root users, please use the provided hostedXen scripts. Following the naming conventions set therein helps account for which resources belong to whom.
Root users, please use the provided hostedOpenVZ scripts. Following the naming conventions set therein helps account for which resources belong to whom.


==Notifications==
==Notifications==

Revision as of 21:38, 30 October 2014


Simple project server, emphasis on availability and uptime.

Most likely, this server will continue operating for several years, even as newer and better servers supplant it.

Login

On any unix terminal emulator, enter the command: 

ssh <userName>@HacDC-shared-m335-1.hacdc.org

On other platforms, try applications like PuTTY with similar settings.

CommandReference

Routinely important commands unique to this server documented as follows.

Root (Admin)

hostedXen

  • ./hovzNewUser <userName> # Creates user account with default Xen VM and permissions.
  • ./hovzDelUser <userName> # Deletes user account, associated VMs, and associated Xen permissions.
  • ./hovzNewVM <userName> <VM_Number> <dist> # Creates VM accessible to non-root user <userName> .

Autostart

Through normal reboots, host will suspend/resume any guest VMs.

iptables

Investigation

  • iptables -t nat -L -n -v #Lists port forwarding rules.
  • iptables -t nat -F #Deletes port forwarding rules.
  • iptables -D PREROUTING 1 #Deletes port forwarding rule.

Forwarding

Enable
/sbin/iptables --table nat -A POSTROUTING -o eth0 -j MASQUERADE
Specific
/sbin/iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 20283 -j DNAT --to 10.174.10.5:22
Persistent

Package iptables-persistent has been installed. Upon installation, existing iptables rules were saved. Edit /etc/iptables/rules.v4 .

ReInstall

Users

List

List OpenVZ VMs created for you. 

cat ~/hovzList

Startup

sudo /usr/sbin/vzctl start <name>

Shutdown

sudo /usr/sbin/vzctl stop <name>

Console

Opens command line of running VM <name> . 

sudo /usr/sbin/vzctl enter <name>

Characteristics

  • CPU - E2200 Dual-Core 2.2GHz
  • RAM - 1GB
  • HDD - 500GB
  • Hostname - HacDC-shared-m335-1
  • FQDN - HacDC-shared-m335-1.hacdc.org

Redundancy (RAID)

None yet, keep backups. Nonetheless, hard disk is kept cool, so the server should have a long life ahead of it.

Policies

Permissions

Root

HacDC members with a demonstrable need or willingness to manage non-root users may be given root access. Imperative that root users do not jeopardize uptime.

Shell

All HacDC members are welcome to non-root shell accounts, directly provided by the server, and used to manage Xen VMs.

OpenVZ

All HacDC members are welcome to OpenVZ Virtual Machines. Resources, including CPU, disk space, and external network ports, will be allocated on an as-needed first-come-first-serve basis.

Root users, please use the provided hostedOpenVZ scripts. Following the naming conventions set therein helps account for which resources belong to whom.

Notifications

Internal server email will notify users, if feasible, on the following schedules, subject to change.

  • Three days before planned downtime exceeding one hour.
  • One week before planned permanent downtime (obsolescence).

Removal

  • Three months before removal of ex-member accounts. Exceptions on a case-by-case basis.

DataLoss

  • Users should regularly backup critical data offiste.
  • Onsite data storage is not guaranteed to be reliable.
  • All server data may be deleted after obsolescence.
  • Removed accounts may be deleted immediately and permanently upon deactivation.

Privacy

Machine is physically accessible to all keyholding HacDC members. Although HacDC members are generally responsible, privacy should not be expected.

AcceptableUse

Sharing

Sharing of account resources is permitted, however, additional resources will be allocated according to individual member needs for specific purposes. As a reminder, compromised accounts will be immediately removed as discovered.

Bandwidth

Hard bandwidth limits have not been set to ease administration of local file servers. However, please configure applications to limit maximum bandwidth use where possible, particularly for web servers.

ChiefAdmin

mirage335

Credits

Hunterkll - Donated core hardware.

Special Services

Funtoo

Funtoo (enhanced Gentoo) build server is available, with binary packages and weekly full-os tarballs for new installations.

Softload

https://github.com/mirage335/hostedXen

Reference

HacDC-shared-m335-1_Xen

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