8 Make sure you have gone through :ref:`installingVPP` on the system you want to create containers on.
10 After VPP is installed, get root privileges with:
12 .. code-block:: console
16 Then install packages for containers such as lxc:
18 .. code-block:: console
20 # apt-get install bridge-utils lxc
22 As quoted from the `lxc.conf manpage <https://linuxcontainers.org/it/lxc/manpages/man5/lxc.conf.5.html>`_, "container configuration is held in the config stored in the container's directory.
23 A basic configuration is generated at container creation time with the default's recommended for the chosen template as well as extra default keys coming from the default.conf file."
25 "That *default.conf* file is either located at /etc/lxc/default.conf or for unprivileged containers at ~/.config/lxc/default.conf."
27 Since we want to ping between two containers, we'll need to **add to this file**.
29 Look at the contents of *default.conf*, which should initially look like this:
31 .. code-block:: console
33 # cat /etc/lxc/default.conf
34 lxc.network.type = veth
35 lxc.network.link = lxcbr0
36 lxc.network.flags = up
37 lxc.network.hwaddr = 00:16:3e:xx:xx:xx
39 As you can see, by default there is one veth interface.
41 Now you will *append to this file* so that each container you create will have an interface for a Linux bridge and an unconsumed second interface.
43 You can do this by piping *echo* output into *tee*, where each line is separated with a newline character *\\n* as shown below. Alternatively, you can manually add to this file with a text editor such as **vi**, but make sure you have root privileges.
45 .. code-block:: console
47 # echo -e "lxc.network.name = veth0\nlxc.network.type = veth\nlxc.network.name = veth_link1" | sudo tee -a /etc/lxc/default.conf
49 Inspect the contents again to verify the file was indeed modified:
51 .. code-block:: console
53 # cat /etc/lxc/default.conf
54 lxc.network.type = veth
55 lxc.network.link = lxcbr0
56 lxc.network.flags = up
57 lxc.network.hwaddr = 00:16:3e:xx:xx:xx
58 lxc.network.name = veth0
59 lxc.network.type = veth
60 lxc.network.name = veth_link1
63 After this, we're ready to create the containers.
65 Creates an Ubuntu Xenial container named "cone".
67 .. code-block:: console
69 # lxc-create -t download -n cone -- --dist ubuntu --release xenial --arch amd64 --keyserver hkp://p80.pool.sks-keyservers.net:80
72 If successful, you'll get an output similar to this:
74 .. code-block:: console
76 You just created an Ubuntu xenial amd64 (20180625_07:42) container.
78 To enable SSH, run: apt install openssh-server
79 No default root or user password are set by LXC.
82 Make another container "ctwo".
84 .. code-block:: console
86 # lxc-create -t download -n ctwo -- --dist ubuntu --release xenial --arch amd64 --keyserver hkp://p80.pool.sks-keyservers.net:80
89 List your containers to verify they exist:
92 .. code-block:: console
98 Start the first container:
100 .. code-block:: console
102 # lxc-start --name cone
104 And verify its running:
106 .. code-block:: console
109 NAME STATE AUTOSTART GROUPS IPV4 IPV6
116 Here are some `lxc container commands <https://help.ubuntu.com/lts/serverguide/lxc.html.en-GB#lxc-basic-usage>`_ you may find useful:
119 .. code-block:: console
121 $ sudo lxc-ls --fancy
122 $ sudo lxc-start --name u1 --daemon
123 $ sudo lxc-info --name u1
124 $ sudo lxc-stop --name u1
125 $ sudo lxc-destroy --name u1