Docker Cookbook

import
json
import
docker
import
sys
278 | Chapter 9: Monitoring Containers

---

cli
=
docker
.
Client
(
base_url
=
'unix://var/run/docker.sock'
)
events
=
cli
.
events
(
since
=
sys
.
argv
[
1
],
until
=
sys
.
argv
[
2
])
for
e
in
events
:
print
e
This script takes two timestamps as arguments and returns the events between these
two. An example output is as follows:
$ ./events.py 1427890602 1427891476
{"status":"untag","id":"967a84db1eff36cab6e77fe9c9393146c...","time":1427890624}
{"status":"untag","id":"4986bf8c15363d1c5d15512d5266f8777...","time":1427890629}
{"status":"untag","id":"4986bf8c15363d1c5d15512d5266f8777...","time":1427890642}
{"status":"delete","id":"4986bf8c15363d1c5d15512d5266f877...","time":1427890643}
{"status":"delete","id":"ea13149945cb6b1e746bf28032f02e9b...","time":1427890643}
{"status":"delete","id":"df7546f9f060a2268024c8a230d86398...","time":1427890643}
Event-based tools like 
StackStorm
 take advantage of this to orchestrate various parts
of a Docker base infrastructure.
See Also
• API 
documentation
9.4 Getting the Logs of a Container with docker logs
Problem
You have a running container that runs a process in the foreground within the con‐
tainer. You would like to access the process logs from the host.
Solution
Use the 
docker logs
command.
For example, start an Nginx container and open your browser on port 80 of the
Docker host:
$ docker run -d -p 80:80 nginx
$ docker ps
CONTAINER ID IMAGE ... PORTS NAMES
dd0e926c4015 nginx:latest ... 443/tcp, 0.0.0.0:80->80/tcp gloomy_mclean
$ docker logs gloomy_mclean
192.168.34.1 - - [10/Mar/2015:10:12:35 +0000] "GET / HTTP/1.1" 200 612 "-" ...
...