Group 6.This is the first in a series of posts covering Splunk-related activities you can do from the comfort of your own.workstation.When the Docker Desktop application starts, it copies the /.docker/certs.d folder on your Mac to the /etc/docker/certs.d directory on Moby (the Docker Desktop xhyve virtual machine). Kerberos Authentication on macOS Kerberos krb5. Fixes docker/for-mac2739The container ids were printed by the docker run command, and can also be found in. Fixes docker/for-mac2827 Fix upgrade straight from pre-17.12 versions where Docker for Mac cannot restart once the upgrade has been performed. Fix button order in reset dialog windows. Do not allow install of Docker for Mac on macOS Yosemite 10.10, this version is not supported since Docker for Mac 17.09.0.In fact, I'm NOT a Docker expert at all! I'm just so happy with this idea that I couldn't help but want to share it, my poor Docker skillz notwithstanding.You can use this blog to get started with Sandboxing and Docker without any prior experience or knowledge. You do NOT need to be a Docker expert: One thing you don't need to be is a Docker expert. We're gonna be referring to some stuff in those domains that will absolutely confuse you if it's the first you're hearing of them. Make sure you are comfortable with Splunk Enterprise: Before you jump in, you should be comfortable installing Splunk Enterprise, starting it from the command line, and the usage of network Ports by Splunk. Conf2017 as a Hands on Lab by Burch entitled Sandboxing with Splunk (with Docker). Its decentralised for digital sovereign self-hosting, or through a hosting.This particular topic was presented at.
Docker Docker Group Install Of DockerBoth of these presentations are great background material. Conf2017's Sandboxing with Splunk (with Docker). Conf2016's Your Splunk Sandbox and. Make sure everyone has their own individual sandobx. Conf2016's Your Splunk Sandbox, I share a few options and considerations. Any Sandbox that you're comfortable destroying will suffice. ![]() OK, back to the fun! Get the Splunk Enterprise Docker ImageThe Splunk Enterprise Docker image is hosted on the Docker Store. So if you run into problems with this part (navigating, downloading, and installing) you'll want to peek at the Docker documentation and/or work with Docker, not Splunk. At the time of this writing, there's a " Get Docker" menu on top of the page that will get your started and pass you along to a few different pages before you get the download going.Remember, Docker is a different company and different product than Splunk. Next up, creating instances of Splunk Enterprise!In Docker, instances are referred to as containers. It'll look something like this:Digest: sha256:1be3208a6c1d96ca5ad320fc21cbfcf06428e3ea12f10773e2efc7d2dbb4b522Status: Downloaded newer image for splunk/splunk:latestYou can even validate what images you have with docker images.So.now you have Docker installed and you've got the Splunk Enterprise image. Follow those instructions and soon enough you'll see the component pieces of the image being downloaded. Instead, you'll see instructions including the docker pull command for having your Docker install fetch and download the Splunk Enterprise Docker image. For example, if I run docker container list -a I'll see the following columns in my output. In this case, accepting the Splunk license at first startup and setting a default password (needed for 7.1+)Great! So.where is that Splunk instance we just created? Well, this is where the docker container command comes in handy. Creating a Splunk Docker InstanceHere's the simplest command to start up a new Docker container (instance) of Splunk Enterprise:Docker run -P -d -e 'SPLUNK_START_ARGS=-accept-license' -e 'SPLUNK_PASSWORD=changeme' splunk/splunkBut let's break down the parameters in this use of the docker command by showing the parameters description from docker help run along with its relevance for the Splunk image.Creates new instance of the Splunk Enterprise imagePublish all exposed ports to random ports.Enables various Splunk Enterprise instances to run without port collisionsRun container in background and print container IDSimilar to how a server runs even when no one is connected.Pass in Splunk-specific flags. You don't need to mess with port conflicts! The instances can all run simultaneously without you having to administer different ports! Boooya!Now let's look at each individual pairing. What happened here is Docker has made those ports available for you to access from your machine, but randomly assigned to different ports.This reassignment might seem annoying if you're used to installing Splunk on your local machine but trust me, it is a huge benefit! Imagine having dozens or hundreds of Splunk containers all running at the same time. You should see that we've just got ourselves a collection of port pairings.and you might even notice some of the right-hand side ports look very Splunk-y. But fear not! It's really quite simple.You'll probably see something like this, but with different numbers to the left of each '->':0.0.0.0:32779->1514/tcp, 0.0.0.0:32784->8000/tcp, 0.0.0.0:32777->8088/tcp, 0.0.0.0:32776->8089/tcp, 0.0.0.0:32775->8191/tcp, 0.0.0.0:32774->9997/tcpIf you've gone cross-eyed, take a step back. We'll get into this in a moment below.Name assigned (random unless you manually assigned one).OK, I promised I'd elaborate on that one, since the notation might be a bit new to you. Best nes mac emulatorThis is where things get a bit annoying. Conf files or save your work from the container. Since SplunkWeb's default port is 8000, you'll see something like this:While you can certainly use SplunkWeb to make changes to the environment, you'll probably get to a point where you want to manually edit. Let's look at the following example:If we put 0.0.0.0:32784 in a browser (or localhost:32784), Docker will send those requests to the container's service listening on port 8000 as tcp. Since the folder is mounted as a volume, the changes I make locally are reflected within the container.The syntax for this is the -v option when I first instantiate the container. By mounting that folder as a volume, I can manage the contents (add/remove/edit files) with my preferred navigator (Mac Finder, Windows Explorer, terminal, etc.) and my preferred editor (vi, SublimeText, Notepadd++ etc.). With that in mind, I prefer to mount a folder from my desktop into the container as a Splunk app. This will allow us to destroy our sandboxes and rebuild without a worry in the world. Let's pause here and review a cheat sheet I put together of what we've covered thus far. Docker Command ReviewPhew, that's a lot. While you can use the WebUI restart controls, you can also apply a restart by restarting the docker container with docker stop or docker start. Notice that it's slipped into the docker help run between other parameters but before we call out the image ( splunk/splunk).Don't forget that like with other Splunk config changes, you'll want to restart for the changes to take affect. An example of the syntax is if we insert within the run command:…license" -v ~/Desktop/local_app:/opt/splunk/etc/apps/container_app splunk/s…In this example, local_app is the folder on my system and container_app is how it appears on the container's filesystem.
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