Changes between Initial Version and Version 1 of TutorialSetupLXC

Timestamp:

Jun 24, 2019, 5:37:42 AM (5 years ago)

Author:

admin

Comment:

--

TutorialSetupLXC

@@ +1 @@
+= Setting up Environment for Institutional Federated Identity Access Management =
+
+
+== Minimum Hardware Requirement ==
+
+PC or Server or VM with 8GB RAM
+
+
+== DNS requirement ==
+
+Get following DNS added,
+
+1. For the host computer
+
+iam.[your institution domain].ac.lk -> 192.248.xx.yy1  
+
+2.  for your identity database
+
+idb.[your institution domain].ac.lk -> 192.248.xx.yy2
+
+3.  for your identity provider
+
+idp. [your institution domain].ac.lk -> 192.248.xx.yy3
+
+4. for your eduroam radius server
+
+irs. [your institution domain].ac.lk -> 192.248.xx.yy4
+
+
+
+== Setting up the Host !Computer/Server ==
+
+1. Download Ubuntu 18.04 LTS and burn to a USB stick or to a CD ROM as bootable media
+
+2. Change your bios setting to boot up from external media
+
+3. install Ubuntu 18.04 LTS  while setting
+
+    the host name as '''iam'''
+
+    domain as [your institution domain].ac.lk
+
+     public IP detail
+
+4.  Login to Ubuntu and run following to update your system
+
+    sudo apt-get update
+
+    sudo apt-get dist-upgrade
+
+
+5. If you have not yet properly setup the IP
+
+* `ifconfig`
+
+
+* `sudo nano /etc/netplan/50-cloud-init.yaml`
+
+{{{
+network:
+        version: 2
+        ethernets:
+          enp0s3:
+             dhcp4: no
+
+
+        bridges:
+          lxdbr0:
+            dhcp4: no
+            addresses:
+                - 192.248.xx.yy1/24
+            gateway4: 192.248.xx.xyz
+            nameservers:
+                addresses:
+                  - 192.248.1.161
+            interfaces:
+              - enp0s3
+}}}
+
+* `sudo netplan apply`
+
+  (You may need to reboot here)
+
+
+
+== Linux Container (LXC)  Virtual Environment ==
+
+LXC should be built in by default
+
+* `lxc version`
+
+
+1. Initiate LXC (single host)
+
+* `lxd init`
+{{{
+Would you like to use LXD clustering? (yes/no) [default=no]:
+Do you want to configure a new storage pool? (yes/no) [default=yes]:
+Name of the new storage pool [default=default]:
+Name of the storage backend to use (btrfs, ceph, dir, lvm, zfs) [default=zfs]: dir
+Would you like to connect to a MAAS server? (yes/no) [default=no]:
+Would you like to create a new local network bridge? (yes/no) [default=yes]:
+What should the new bridge be called? [default=lxdbr0]:
+What IPv4 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]:
+What IPv6 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]:
+Would you like LXD to be available over the network? (yes/no) [default=no]: yes
+Would you like stale cached images to be updated automatically? (yes/no) [default=yes]
+Would you like a YAML "lxd init" preseed to be printed? (yes/no) [default=no]:
+}}}
+
+2. Check remote repositories
+
+
+* `lxc remote list`
+
+
+3. Local repositories
+
+
+* `lxc image list`
+
+
+4. Remote images
+
+
+* `lxc image list images:`
+
+
+* `lxc image list images:ubuntu`
+
+
+
+5. Create a Ubuntu Container
+
+
+* `lxc launch ubuntu:18.04 test-ct`
+
+* `lxc list`
+
+
+   Delete a container
+
+* `lxc stop test-ct`
+
+* `lxc delete --force test-ct`
+
+6. Create Three Production LXCs for your institute
+
+* `lxc launch ubuntu:18.04 idb`
+
+* `lxc copy idb idp`
+
+* `lxc copy idb irs`
+
+* `lxc start idp`
+
+* `lxc start irs`
+
+
+7. !Using/Login to container
+
+* `lxc exec idb bash`
+
+* `lsb_release -dirc`
+
+* `free -m`
+
+* `nproc`
+
+* `uname -r`
+
+* `exit`
+
+
+8. CT info
+
+* `lxc info idb`
+
+* `pstree -p [pid]`
+
+
+9. CT configuration
+
+* `lxc config show idp`
+
+* `lxc profile list`
+
+* `lxc profile show default`
+
+
+10. Restrict Memory
+
+* `lxc config set idb limits.memory 4096MB`
+
+* `lxc config show idb`
+
+* `lxc config set idp limits.memory 4096MB`
+
+* `lxc config set irs limits.memory 2048MB`
+
+
+11. configure CT network IP
+
+* `ifconfig`
+
+* `nano /etc/netplan/50-cloud-init.yaml`
+
+{{{
+network:
+        version: 2
+        ethernets:
+          enp0s3:
+             dhcp4: no
+            addresses:
+                - 192.248.xx.yy2/24
+            gateway4: 192.248.xx.xdfs
+            nameservers:
+                addresses:
+                  - 192.248.1.161
+
+}}}
+
+* `netplan generate`
+
+* `netplan apply`
+
+
+* `timedatectl set-timezone Asia/Colombo`
+
+
+
+12. SSH to CTs
+
+* `nano /etc/ssh/sshd_config`
+
+   change
+
+   `PasswordAuthentication no`
+
+   to
+
+   `PasswordAuthentication yes`
+
+
+* Add a user by
+   * `sudo adduser`
+   * `sudo adduser <username>`
+
+* `sudo reboot`
+
+
+now you can ssh to your  all three CTs over the network. Then  you can follow the installation instruction for LDAP, IDP and IRS for the installation of relevant CTs.
+
+
+=== OPTIONAL ===
+
+
+1. !Pull/Push file to CT
+
+* `echo helle there > myfile`
+
+* `lxc file push myfile idp/root/`
+
+* `lxc file pull idp/root/myfile /tmp`
+
+
+2. Snapshot
+
+* `lxc snapshot idp idp1`
+
+* `lxc restore idp idp1`