- Lab
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- Cloud

Taking LXD Container Snapshots
One benefit Linux containers provide is the ability to quick spin up a number of containers. But from what are these containers based? LXD snapshots allow us to take point-in-time images of our containers and any work performed on these containers. In this lab, we take a preconfigured nginx-based web container and clone it to create the basis of a small web cluster.

Lab Info
Table of Contents
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Challenge
Create a Snapshot
Take a snapshot of the
web01
container:lxc snapshot web01 1.0
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Challenge
Launch and Review the New Container
Launch the new container:
lxc copy web01/1.0 web02 lxc start web02
View the IPv4 address of the container and attempt to access a website:
lxc list curl \<ipv4\>
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Challenge
Create a Second Snapshot
Update the
web01
container songinx
starts at boot:lxc exec web01 -- rc-update add nginx default
Take a new snapshot:
lxc snapshot web01 1.1
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Challenge
Relaunch and Review the `web02` Container
Remove the
web02
container and relaunch it with the new snapshot:lxc stop web02 lxc delete web02 lxc copy web01/1.1 web02 lxc start web02
Ensure nginx is working by running
curl
on the container's IP:lxc list curl \<ipv4\>
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Challenge
Remove the Erroneous Snapshot
Remove the
1.0
snapshot:lxc delete web01/1.0
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