• • Filebeat, Metricbeat & Hearbeat Knowing what is happening in Docker and in your applications running on Docker is critical. To collect logs from my Swarm and monitor the health of it, I use the ELK-B stack which is made up of four pieces of software called, (I recommend that you use Beats instead of LogStash), and various. ElasticSearch is basically a No-SQL database that is geared towards storing JSON documents and searching accross them. Kibana is a visualization took that gives you a nice UI to view all of your data and produce nice visualizations and dashboards. There are several Beats which are used to ship data into ElasticSearch from various sources. While you could use Docker to host ElasticSearch and Kibana, I use the at work, you could also use instances hosted by AWS and Azure. Using a hosted version takes some of the pain out of maintaining ElasticSearch. I had a look at the ElasticSearch Docker container and if you really want to go down the Docker route and create an ElasticSearch cluster, it looks fairly straightforward but a bit unorthodox. There is a cost versus effort trade-off in this decision and it’s up to you where you decide to go. In terms of Beats, I use three of them which I’ll talk about below: Filebeat is a tool used to ship Docker log files to ElasticSearch.
• — A large, albeit gentle and good-natured person, Junko is a member of a species known as Wallops. Junko is a 'gentle giant' type who despite his power is nonviolent and a little goofy, focused mainly on food. He has greenish-blue hair and grey eyes and his appearance is similar to that of a brown anthropomorphized rhino. As the muscle of the Storm Hawks he possesses superhuman strength that is greatly increased by the use of his preferred weapons, the Knuckle Busters. Storm hawks sky race game. The latest version 6.0 queries Docker APIs and enriches these logs with the container name, image, labels, and so on which is a great feature, because you can then filter and search your logs by these properties. You can then view these logs in a fully customizable Kibana dashboard. Filebeat ships with a sample Kibana dashboard that looks like this: As well as shipping Docker logs, I write the logs from my ASP.NET Core applications to disk (The best way to make sure you never lose log information) and then use Filebeat to ship these log files to ElasticSearch. The Dockerfile below is used to add Filebeat configuration files to the base Filebeat image and nothing more. The configuration files are pretty lengthy and heavily commented so I’ve omitted them.
Docker stack deploy -- compose - file docker - stack. Yml Docker Swarm Visualizer The image connects to the Docker socket and shows a really nice visualization showing all of the nodes in your Docker cluster (or just one on your development machine) and all of the containers running on it. A word of warning about using this image. It has full unimpeded access to your Docker socket which lets it do basically anything that Docker can do (and thats a lot). This image is useful for development and testing purposes. If you want to use it in production, don’t expose it to the internet, only run it in your local network if you trust the users in your local network that is. You don’t want your Docker Swarm turning into a Bitcoin mining farm. Here is a Docker stack file you can use to deploy this image. Visualizeroverlay: The container has to run on a manager node, so I’ve added that constraint and also added access to the Docker socket using a volume mount. I’ve also limited the resources the container can consume. Finally, I’ve also given the service it’s own dedicated overlay network, so it can’t talk to my other containers. Portainer is a free and open source Docker image you can use to administer your Docker cluster. It has full support for standalone Docker and Docker Swarm. It lets you do everything from seeing what’s running on your nodes, starting containers, viewing logs and shelling into your running Docker containers. I find the last two particularly useful.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |