This blog post is part of a series describing how to run an entire SingleStore cluster – which usually requires at least five servers or machine instances – on your laptop, in a Linux virtual machine (VM). That’s right – even though SingleStore is a distributed system, you can run a minimal version of SingleStore on your laptop, in a single Linux VM. We tell you how in this blog post.
You also have the option of running SingleStore on your laptop in other environments – see our blog posts for Docker Desktop, Kubernetes, and Vagrant. You should use the one you have more experience with, or is more compatible with your work environment. Whichever method you use, the combination of free access, and being able to run SingleStore on your laptop, can be extremely convenient for demos, software testing, developer productivity, and general fooling around.
In this post we’ll quickly build a single-instance SingleStore cluster running on Linux, in a VM, on a laptop computer, for free. You’ll need a machine with at least 8GB RAM and four CPUs. This is ideal for quickly provisioning a system that will help you test and understand the capabilities of the SQL engine. Everything we build today will be running on your machine, and we’ll not need to install or configure much to get it running.
The steps here are: get a free SingleStore license; install and boot a VM; install the SingleStore engine and tools; provision SingleStore as a cluster-in-a-box; browse to SingleStore Studio; and create a database. You’ll have a bare-bones SingleStore cluster running on your laptop machine in no time.
Why a Single VM?
Virtual Machines (VMs) are a great way to run software in a protected sandbox and easy-to-manage environment, with less overhead than a dedicated server, and less ceremony than with containers. You can use VMs to spin up applications and systems to try out software — even from a Mac or Windows machine, or to quickly spin up a database to support local application development. We’ll use a Linux VM to provision and spin up a free SingleStore cluster – and, just as easily, to destroy it when we’re done.
Using a Linux terminal makes it much easier to explore the pieces in the SingleStore ecosystem and provision a small cluster. SingleStore’s cluster-in-a-box configuration that we’ll use here includes an aggregator node and a leaf node running on a single machine. We’ll add SingleStore Studio (our browser-based SQL editor and database maintenance tool), all running in one place, all configured to work together. The minimal hardware footprint wouldn’t be nearly enough for production workloads, but it allows us to quickly spin up a cluster, connect it to our project, and try things out.
There are other options for running SingleStore’s cluster-in-a-box setup. We could use containers running on Kubernetes or Docker Desktop. If your production cluster runs on Linux machines or VMs, taking the approach described in this post helps add parity between production and development environments. If production is running in Kubernetes, you may prefer running SingleStore on Kubernetes. If you use containers without Kubernetes, you may find running the SingleStore container with a
file easier. You also have the option of using Vagrant – which, unlike the Docker containers used in the other two options, has its own separate instance of the operating system.
With the single-machine SingleStore cluster described here, you can craft the simplest of tables all the way up to running a complex app, a dashboard, a machine learning model, streaming ingest from Kafka or Spark, or anything else you can think of, against SingleStore. You’ll quickly understand the methodology and features of SingleStore, and you can plan accordingly for real-world deployments.
In this post, we’ll disable SingleStore’s minimum hardware specs, but you’ll still want a machine with at least 8GB RAM and four CPUs. With specs well below SingleStore’s limits, you’ll see poor performance, so this system is definitely not the right setup for a proof of concept (PoC). But you can use this setup to experience the full features of SingleStore, and understand how it applies to your business problems.
Once you know how SingleStore works, you can take these experiments and use what you learn to help you achieve your service-level agreements (SLAs) on distributed clusters that meets SingleStore’s minimum requirements and your high-availability needs. That’s when you can really open up the throttle, learn how your data performs on SingleStore, and dial in system performance for your production workloads.
💻 Laptop computer
🖥️🖥️🖥️ Many hefty machines
|- Try out SingleStore|
- Test SingleStore capabilities
|- Proof of concept (PoC)|
- Production workloads
- High availability
- Performance testing
Free up to four nodes with 32GB RAM each, and with community support
Free up to four nodes with 32GB RAM each, and with community support
Sign Up For SingleStore
To get a free license for SingleStore, register at memsq.com/free and click the link in the confirmation email. Then go to the SingleStore customer portal at portal.singlestore.com and login. Click “Licenses” and you’ll see your license for running SingleStore for free. This license never expires, and is good for clusters up to four machines and up to 128GB of combined RAM. This is not the license you’ll want for a production cluster, but it’s great for these “kick the tires” scenarios. Note this license key. We’ll need to copy/paste it into place later.
The first step in getting our SingleStore cluster running is to get a Linux Virtual Machine. You can use VirtualBox, Xen, VMware, Hyper-V, or any other virtualization technology to craft a Linux VM. In this example we’ll use VirtualBox because it’s free and available on all platforms. If you’re already using virtualization technology, you can skip this step.
Go to https://www.virtualbox.org/wiki/Downloads and download VirtualBox for your platform. Open the installer and follow the prompts. If you’re running on Windows, this will disable Hyper-V.
Start a Linux VM
Download a modern version of an Ubuntu VM from https://www.osboxes.org/ubuntu-server/, or from https://virtualboxes.org/images/ubuntu/, or from your corporate VM catalog. We’ll exclusively use the terminal, so choose a Server version if prompted. A server version removes the Desktop shell. You won’t have a mouse or VM tools installed in this configuration.
The SingleStore database is tested to run on RHEL-based and Debian-based Linux Operating Systems, but with minor variation, you may be able to run this tutorial on other systems as well.
Start up your virtualization software, and create a new virtual machine. In VirtualBox, the “New VM” button is on the toolbar. As you create the new VM, configure these settings:
With the VM created, click Start, and boot the VM. Now let’s get to work installing SingleStore.
We’re following the install steps for Debian-based systems to match the Ubuntu VM. If you chose a RedHat-based Linux OS, switch to the RedHat setup steps in the SingleStore docs for this section.
In the Linux VM, open a terminal if necessary, and run these commands. We won’t be saving any files into the directory, so we don’t need to change directory into a specific folder. Each command in this section is run as root because we’re configuring the system here. The output of these commands is verbose and roughly amounts to console barf. As long as the commands return without error, we’re good.
apt update apt install -y apt-transport-https
wget -O - 'https://release.singlestore.com/release-aug2018.gpg' 2>/dev/null | apt-key add - apt-key list echo "deb [arch=amd64] https://release.singlestore.com/production/debian memsql main" | tee /etc/apt/sources.list.d/memsql.list
Note that there are three commands here. If the lines wrap on your monitor, you may need to remove line-breaks as you type the commands.
apt update apt install -y memsql-toolbox memsql-client memsql-studio
systemctl start memsql-studio
What did we install? Let’s look at the three tools and understand what each does.
In a production environment, we may choose to install only memsql-toolbox on our main machines, and leave the other tools for ansilatory machines. In this developer-focused single machine setup, we installed all three onto the same machine.
Starting the SingleStore Cluster
We’ll start a “cluster-in-a-box” cluster. This cluster configuration has a single aggregator node and a single leaf node, both running on the same machine. In a production scenario, we’d want these on different machines, and many more than one.
Go to portal.singlestore.com, switch to the license tab, and copy your license key. It’s really long, and likely ends in ==.
Reusing the terminal from above, we run these commands not as root from any directory:
memsql-deploy cluster-in-a-box --license "YOUR_LICENSE_HERE" ---password any_admin_password -y
You can verify it’s running by running:
ps -ef | grep memsql
My output looks like this:
root 3597 1 0 00:17 ? 00:00:03 /usr/bin/memsql-studio memsql 3779 1 0 00:18 ? 00:00:00 /opt/memsql-server-7.0.11-df50c6ab30/memsqld_safe --defaults-file /var/lib/memsql/6c659cc1-2c1a-4c7c-95fb-f2b96c53d0d8/memsql.cnf --user 110 --auto-restart StagedEnable memsql 3785 3779 12 00:18 ? 00:00:55 /opt/memsql-server-7.0.11-df50c6ab30/memsqld --defaults-file /var/lib/memsql/6c659cc1-2c1a-4c7c-95fb-f2b96c53d0d8/memsql.cnf --user 110 memsql 3787 3785 0 00:18 ? 00:00:00 /opt/memsql-server-7.0.11-df50c6ab30/memsqld --defaults-file /var/lib/memsql/6c659cc1-2c1a-4c7c-95fb-f2b96c53d0d8/memsql.cnf --user 110 memsql 4038 1 0 00:18 ? 00:00:00 /opt/memsql-server-7.0.11-df50c6ab30/memsqld_safe --defaults-file /var/lib/memsql/aeebcd10-7103-4b81-aef8-49f1308a0bde/memsql.cnf --user 110 --auto-restart StagedEnable memsql 4044 4038 12 00:18 ? 00:00:53 /opt/memsql-server-7.0.11-df50c6ab30/memsqld --defaults-file /var/lib/memsql/aeebcd10-7103-4b81-aef8-49f1308a0bde/memsql.cnf --user 110 memsql 4046 4044 0 00:18 ? 00:00:00 /opt/memsql-server-7.0.11-df50c6ab30/memsqld --defaults-file /var/lib/memsql/aeebcd10-7103-4b81-aef8-49f1308a0bde/memsql.cnf --user 110 rob 4399 4384 0 00:25 pts/0 00:00:00 grep memsql
If your cluster doesn’t start correctly, you can run these additional commands as root to disable hardware capacity checks:
sudo memsqlctl -yj update-config --all --key minimum_core_count --value 0 sudo memsqlctl -yj update-config --all --key minimum_memory_mb --value 0
After running these commands, re-run the
command not as root.
Congratulations! We’ve launched a SingleStore cluster. Let’s dive in and start using it.
Start SingleStore Studio
As we installed the software, we started SingleStore Studio as a service. Then we launched the SingleStore database. Now let’s use them.
First we need to find the IP address of the Linux VM. In the terminal on the VM, run:
The results will look like this:
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16384 inet 127.0.0.1 netmask 0xff000000 inet6 ::1 prefixlen 128 … snip ... en0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.0.2.15 netmask 0xffffff00 broadcast 192.168.102.255 inet6 0102::0102:0102:0102:0102 prefixlen 64 scopeid 0x20 ether 01:02:03:04:05:06 … snip ...
We’re looking for the IP address of the VM, so we’ll ignore the loopback interface (127.0.0.1). Look for the inet line, and grab the first set of numbers. My VM’s IP is 10.0.2.15.
Next, let’s launch SingleStore Studio. It runs on port 8080. Open your favorite browser on your laptop, and browse to
, substituting your VM’s IP. So I would browse to http://10.0.2.15:8080/.
We’re now directed to the main dashboard screen for our cluster.
On this main dashboard screen, we can see the health of the cluster. Note that this is a two-node cluster. Clicking on Nodes on the left, we see one node is a leaf node, one is an aggregator node, and they’re both running in the same container. In production, we’d want more machines running together to support production-level workloads and to provide high availability.
Click on the SQL Editor page, and we see the query window. In the query window, type each command, select the line, then push the execute button on the top-right.
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For more details on SingleStore Studio, check out the docs or watch the SingleStore Studio tour video.
Where Can We Go From Here?
SingleStore is now ready for all the “kick the tires” tasks we need. You could:
Being able to run these tasks from such a simple setup is a real time-saver. However, don’t expect the same robustness or performance as you would have with a full install on a full hardware configuration.
We’ve finished our experiment today. To stop the VM, run this command:
This will stop the VM. As the VM powers down, so too will the SingleStore Studio service and the SingleStore nodes. If you’re done experimenting with SingleStore, delete the VM. Or better yet, leave this machine in place, to quickly start up your next experiment.
With the SingleStore cluster-in-a-box configuration and a Linux virtual machine, we quickly provisioned a “kick the tires” SingleStore cluster. We got to experience more of the components and configuration of a SingleStore cluster than we would have with a pre-provisioned system. We saw how easy it is to spin up a cluster, connect to it with SingleStore Studio, and start being productive. Now go build great things!