LXC - Revision history

Johnno: /* Set up a SSH shortcut for containers */

2025-03-17T20:29:40Z

Set up a SSH shortcut for containers

2021-08-20T11:35:58Z

Optional: user configuration for unprivileged containers

2015-12-03T01:03:31Z

Optional: user configuration for unprivileged containers

2015-02-04T01:49:24Z

User configuration for unprivileged containers

2014-05-21T03:31:01Z

Clone a new project container from the template

2014-05-21T03:18:15Z

2013-02-08T02:53:46Z

Clone a new project container from the template

2013-02-08T02:01:32Z

Clone a new project container from the template

2013-02-08T02:00:56Z

2013-02-08T02:00:22Z

@@ Line 46: / Line 46: @@
     StrictHostKeyChecking no
     UserKnownHostsFile /dev/null
-    ProxyCommand nc $(host $(echo %h | sed "s/\.lxc//g") 10.0.3.1 | tail -1 | awk '{print $NF}') %p
+    ProxyCommand nc $(host -t A $(echo %h | sed "s/\.lxc//g") 10.0.3.1 | tail -1 | awk '{print $NF}') %p
 Then one can ssh to the containers by appending .lxc to the container name:

@@ Line 9: / Line 9: @@
 === Optional: user configuration for unprivileged containers ===
-On Ubuntu 14.04 and later, you can now use unprivileged containers, i.e. you don't need to use sudo all the time, and the containers live in your <code>~/.local/share/lxc</code> directory. From 15.04 onwards this has been set up for you, but for 14.04 LTS, the Ubuntu Server Guide tells you all you need to know to set this up; the short version is that unprivileged containers use user namespaces, so you need to create a subuid and subgid mapping for your user and allow your user to access the bridge network:
+You can use unprivileged containers, i.e. you don't need to use sudo all the time, and the containers live in your <code>~/.local/share/lxc</code> directory. The Ubuntu Server Guide tells you all you need to know to set this up; the short version is that unprivileged containers use user namespaces, so you need to create a subuid and subgid mapping for your user and allow your user to access the bridge network:
   sudo usermod -v 100000-200000 -w 100000-200000 $USER
@@ Line 17: / Line 17: @@
   mkdir -p ~/.config/lxc
-  echo "lxc.id_map = u 0 100000 65536
+  echo "lxc.include = /etc/lxc/default.conf
-  lxc.id_map = g 0 100000 65536
+ lxc.idmap = u 0 100000 65536
- lxc.network.type = veth
+  lxc.idmap = g 0 100000 65536" > ~/.config/lxc/default.conf
 === Create a base container to serve as a template ===

@@ Line 9: / Line 9: @@
 === Optional: user configuration for unprivileged containers ===
-Unprivileged containers use user namespaces. Create a subuid and subgid mapping for your user and allow your user to access the bridge network:
+On Ubuntu 14.04 and later, you can now use unprivileged containers, i.e. you don't need to use sudo all the time, and the containers live in your <code>~/.local/share/lxc</code> directory. From 15.04 onwards this has been set up for you, but for 14.04 LTS, the Ubuntu Server Guide tells you all you need to know to set this up; the short version is that unprivileged containers use user namespaces, so you need to create a subuid and subgid mapping for your user and allow your user to access the bridge network:
   sudo usermod -v 100000-200000 -w 100000-200000 $USER

@@ Line 7: / Line 7: @@
   sudo apt-get install lxc
-=== User configuration for unprivileged containers ===
+=== Optional: user configuration for unprivileged containers ===
 Unprivileged containers use user namespaces. Create a subuid and subgid mapping for your user and allow your user to access the bridge network:

@@ Line 62: / Line 62: @@
 Now you should have a useful base container, so clone it for your ''nifty-kitten'' project and start it (most usefully in a screen session):
-  sudo lxc-shutdown -n base
+  lxc-shutdown -n base
-  sudo lxc-clone -o base -n '''nifty-kitten'''
+  lxc-clone -o base -n '''nifty-kitten'''
   screen
-  sudo lxc-start -n '''nifty-kitten'''
+  lxc-start -n '''nifty-kitten'''
   '''''[Ctrl-a] [d]''''' ''to detach''
   ssh nifty-kitten.lxc

@@ Line 1: / Line 1: @@
-'''LXC''', or '''Linux Containers''', is the successor to VServer and is now in the main kernel; most modern distributions should have it. The [https://help.ubuntu.com/12.04/serverguide/lxc.html LXC Ubuntu Server Guide] is very good and contains pretty much all you need to know. A lot of work has been done on 12.04 to make it very simple to get started. These instructions assume Ubuntu 12.04 LTS.
+'''LXC''', or '''Linux Containers''', is a lightweight chroot-style virtual machine emulation in the main Linux kernel; most modern distributions should have it. The [https://help.ubuntu.com/serverguide/lxc.html LXC Ubuntu Server Guide] is very good and contains pretty much all you need to know. A lot of work has been done on 14.04 to make it very simple to get started and now supports unprivileged containers. These instructions assume Ubuntu 14.04 LTS.
-== Install and set up LXC container ==
+== Install and set up LXC containers ==
 In sum, we install LXC and create a base container, set it up nicely, then clone project containers from it as required. Here's roughly what I had to do to set up LXC nicely.
   sudo apt-get install lxc
 === Create a base container to serve as a template ===
-  sudo lxc-create -t ubuntu -n base
+The -d -r and -a options are distribution, release, and architecture.
-  sudo lxc-start -n base
 Log in with the default account, (username ubuntu, password ''ubuntu''), then add yourself as a user with sudo:

@@ Line 43: / Line 43: @@
 === Clone a new project container from the template ===
-Now you should have a useful base container, so clone it for your ''nifty-kitten'' project and start it (most usefully in a [[screen]] session):
+Now you should have a useful base container, so clone it for your ''nifty-kitten'' project and start it (most usefully in a screen session):
   sudo lxc-shutdown -n base

← Older revision		Revision as of 02:00, 8 February 2013
Line 1:		Line 1:
−	'''LXC''', or '''Linux Containers''', is the successor to VServer and is now in the main kernel; most modern distributions should have it~~. http://lxc.sourceforge.net/~~	+	'''LXC''', or '''Linux Containers''', is the successor to VServer and is now in the main kernel; most modern distributions should have it. The [https://help.ubuntu.com/12.04/serverguide/lxc.html LXC Ubuntu Server Guide] is very good and contains pretty much all you need to know. A lot of work has been done on 12.04 to make it very simple to get started. These instructions assume Ubuntu 12.04 LTS.
−	~~These instructions assume Ubuntu 12.04 LTS~~. The [https://help.ubuntu.com/12.04/serverguide/lxc.html LXC Ubuntu Server Guide] is very good and contains pretty much all you need to know. A lot of work has been done on 12.04 to make it very simple to get started.

	== Install and set up LXC container ==		== Install and set up LXC container ==