LightstreamerEstimated reading time: 6 minutes
Lightstreamer is a real-time messaging server optimized for the Internet.
GitHub repo: https://github.com/Lightstreamer/Docker
This content is imported from the official Docker Library docs, and is provided by the original uploader. You can view the Docker Store page for this repo at https://store.docker.com/images/lightstreamer.
Supported tags and respective
For detailed information about the published artifacts of each of the above supported tags (image metadata, transfer size, etc), please see the
repos/lightstreamer directory in the
docker-library/repo-info GitHub repo.
For more information about this image and its history, please see the relevant manifest file (
library/lightstreamer). This image is updated via pull requests to the
docker-library/official-images GitHub repo.
What is Lightstreamer Server?
Lightstreamer is a real-time messaging server optimized for the Internet. Blending WebSockets, HTTP, and push notifications, it streams data to/from mobile, tablet, browser-based, desktop, and IoT applications.
For more information and related downloads for Lightstreamer Server and other Lightstreaner products, please visit www.lightstreamer.com.
How to use this image
Up and Running
Launch the container with the default configuration:
$ docker run --name ls-server -d -p 80:8080 lightstreamer
This will map port 8080 inside the container to port 80 on local host. Then point your browser to
http://localhost and watch the Welcome page showing real time data flowing in from the locally deployed demo application, which is a first overview of the unique features offered by the Lightstreamer technology. More examples are available online at the demo site.
It is possibile to customize each aspect of the Lightstreamer instance running into the container. For example, a specific configuration file may be supplied as follows:
$ docker run --name ls-server -v /path/to/my-lightstreamer_conf.xml:/lightstreamer/conf/lightstreamer_conf.xml -d -p 80:8080 lightstreamer
In the same way, you could provide a custom logging configuration, maybe in this case also specifying a dedicated volume to ensure both the persistence of log files and better performance of the container:
$ docker run --name ls-server -v /path/to/my-lightstreamer_log_conf.xml:/lightstreamer/conf/lightstreamer_log_conf.xml -v /path/to/logs:/lightstreamer/logs -d -p 80:8080 lightstreamer
If you also change in your
my-lightstreamer_log_conf.xml file the default logging path from
$ docker run --name ls-server -v /path/to/my-lightstreamer_log_conf.xml:/lightstreamer/conf/lightstreamer_log_conf.xml -v /path/to/hosted/logs:/path/to/dest/logs -d -p 80:8080 lightstreamer
Alternatively, the above tasks can be executed by deriving a new image through a
Dockerfile as the following:
FROM lightstreamer # Please specify a COPY command only for the the required custom configuration file COPY my-lightstreamer_conf.xml /lightstreamer/conf/lightstreamer_conf.xml COPY my-lightstreamer_log_conf.xml /lightstreamer/conf/lightstreamer_log_conf.xml
my-lightstreamer_log_conf.xml are your custom configuration files, placed in the same directory as the Dockerfile. By simply running the command:
$ docker build -t my-lightstreamer .
the new image will be built along with the provided files. After that, launch the container:
$ docker run --name ls-server -d -p 80:8080 my-lightstreamer
To get more detailed information on how to configure the Lightstreamer server, please see the inline documentation in the
lighstreamer_log_conf.xml files you can find under the
conf folder of the installation directory.
Deployment of Adapter Sets
You might want to use this image even with any Adapter Set, either developed by yourself or provided by third parties.
To accomplish such goal, you may use similar strategies to those illustrated above:
Deployment of a single Adapter Set
To deploy a single custom Adapter Set, the simplest way is to attach its files into the factory adapters folder, as follows:
$ docker run --name ls-server -v /path/to/my-adapter-set:/lightstreamer/adapters/my-adapter-set -d -p 80:8080 lightstreamer
Full replacement of the “adapters” folder
In the case you have many custom Adapter Sets to deploy, a more appropriate strategy is to replace the factory adapters folder with the one located in your host machine:
$ docker run --name ls-server -v /path/to/my-adapters:/lightstreamer/adapters -d -p 80:8080 lightstreamer
In this case, the
/path/to/my-adapters folder has to be structured with the required layout for an adapters folder:
/path/to/my-adapters+ +my_adapter_set_1 +my_adapter_set_2 ... +my_adapter_set_N
Building a new image
Once again, a linear and clean approach is to make a new image including all needed files.
In this case, you could write a simple Docker file in which the list of all your Adapter Sets configuration files is provided:
FROM lightstreamer # Will copy the contents of N Adapter Sets into the factory adapters folder COPY my-adapter-set-1 /lightstreamer/adapters/my-adapter-set-1 COPY my-adapter-set-2 /lightstreamer/adapters/my-adapter-set-2 COPY my-adapter-set-3 /lightstreamer/adapters/my-adapter-set-3
Then, just build and start the container as already explained.
Deployment of web server pages
There might be some circumstances where you would like provide custom pages for the internal web server of the Lightstreamer Server. Even in this case, it is possible to customize the container by employing the same techniques as above.
For example, with the following command you will be able to fully replace the factory
$ docker run --name ls-server -v /path/to/custom/pages:/lightstreamer/pages -d -p 80:8080 lightstreamer
/path/to/custom/pages is the path in your host machine containing the replacing web content files.
View license information for the software contained in this image.
Supported Docker versions
This image is officially supported on Docker version 17.04.0-ce.
Support for older versions (down to 1.6) is provided on a best-effort basis.
Please see the Docker installation documentation for details on how to upgrade your Docker daemon.
If you have any problems with or questions about this image, please contact us through a GitHub issue. If the issue is related to a CVE, please check for a
cve-tracker issue on the
official-images repository first.
You can also reach many of the official image maintainers via the
#docker-library IRC channel on Freenode.
You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.
Before you start to code, we recommend discussing your plans through a GitHub issue, especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.
Documentation for this image is stored in the
lightstreamer/ directory of the
docker-library/docs GitHub repo. Be sure to familiarize yourself with the repository’s
README.md file before attempting a pull request.