Pre-confluence:Ceph testing and development cluster: Difference between revisions

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* Use the USB boot key on top of the cluster
* Use the USB boot key on top of the cluster
* Allocate 512M for EFI, 50G for root, and 1G for swap
* Allocate 512M for EFI, 50G for root, and 1G for swap (which allows space on the SSD for a local OSD)
* Tell the installer to set up SSH server ONLY
* Tell the installer to set up SSH server ONLY
* Install (and configure) unattended-upgrades, systemd-timesyncd, rsync, man-db, tcpdump lsof, strace
* Install (and configure) unattended-upgrades, systemd-timesyncd, rsync, man-db, tcpdump lsof, strace
Line 43: Line 43:
* Add "selinux=0 audit=0 ipv6.disable=1" to /etc/default/grub and run "grub-mkconfig -o /boot/grub/grub.cfg". Reboot
* Add "selinux=0 audit=0 ipv6.disable=1" to /etc/default/grub and run "grub-mkconfig -o /boot/grub/grub.cfg". Reboot
* Once the SSH keys have been set up, disable PasswordAuthentication in sshd_config and restart sshd
* Once the SSH keys have been set up, disable PasswordAuthentication in sshd_config and restart sshd
* Copy authorized_keys for the nodes from cephtest.


== Installing Ceph ==
== Installing Ceph ==

Latest revision as of 12:06, 1 Mayıs 2024

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 (the top one in the stack) 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, untrust, and server subnetworks
  • The cluster nodes should be added to /etc/hosts on cephtest. The cluster nodes should have no domain component in their names
  • The gateway provides access by the cluster nodes to the world using NAT
  • The cluster nodes connect to the gateway (cephtest) using a switch filched from the server room (ex: "smartswitch"). The switch has been reset to factory defaults and therefore does not operate in any sort of managed mode

Network settings

Description Value
Configuration Static
DHCP None
Subnetwork 192.168.155.0/24
Gateway 192.168.155.1
DNS server(s) 129.94.172.11

Setting up a PC

  • In the HP PC's BIOS reset the security to factory defaults

Installing Debian

  • Use the USB boot key on top of the cluster
  • Allocate 512M for EFI, 50G for root, and 1G for swap (which allows space on the SSD for a local OSD)
  • Tell the installer to set up SSH server ONLY
  • Install (and configure) unattended-upgrades, systemd-timesyncd, rsync, man-db, tcpdump lsof, strace
  • Set UsePAM to NO in sshd_config
  • Add "selinux=0 audit=0 ipv6.disable=1" to /etc/default/grub and run "grub-mkconfig -o /boot/grub/grub.cfg". Reboot
  • Once the SSH keys have been set up, disable PasswordAuthentication in sshd_config and restart sshd
  • Copy authorized_keys for the nodes from cephtest.

Installing Ceph

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