A set of scripts I use on a server with a Docker instance. All monitoring scripts are used with Zabbix.
Very simple shell script to count the number of containers on the docker instance.
containerCount.sh (all|running|crashed)
Print the number of containers on the Docker instance.
A script inspired from a nice article about metric. It enables you to get several metrics from a running container:
- the user or system cpu used by the container
- the memory used by the container
- the ip address of the container
- the container status: running, stopped, crashed or paused
- the container's network activity
containerHelper.py [-h] container {cpu,ip,memory,network,status} ...
positional arguments:
container Container name
optional arguments:
-h, --help show this help message and exit
Counters:
Available counters
{cpu,ip,memory,network,status}
cpu Display CPU usage
ip Display IP Address
memory Display memory usage
network Display network usage
status Display the container status
Additional information may be required depending on the counter prameter.
A daemon to update a dynamic DNS when Docker starts containers. Designed to be used with bind9. Have a look at this page to setup correctly your DNS before using it.
dockerDDNS.py [-h] --key KEY [--server SERVER] --domain DOMAIN
[--zone ZONE] [--log-level LOG_LEVEL]
[--log-file LOG_FILE]
optional arguments:
-h, --help show this help message and exit
--key KEY Path to the dynamic dns key
--server SERVER IP/Hostname of the server to update
--domain DOMAIN The domain to be updated
--zone ZONE The zone to be updated (default to the domain)
--catchup Register the running containers on startup
--log-level LOG_LEVEL
Log level to display
--log-file LOG_FILE Where to put the logs
This script is designed to run as a daemon after Docker's startup. You'll find in the upstart directory a configuration file to have it launched on boot.