MongoDB 3.0.14 for Raspbian Stretch

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The main operating system for Raspberry Pi, Raspbian, continues to evolve.  The latest version as of August 2017 is “Raspbian Stretch” — based upon the current stable version of Debian 9.  The previous version was known as “Raspbian Jessie”.  One difference between versions is OpenSSL libraries. OpenSSL is a general purpose cryptography library that provides an open source implementation of the Secure Sockets Layer (SSL).  My previous builds of MongoDB relied on the older library.  As a result, my previous binaries for 3.0.14 and 3.0.9 do not run under Raspbian Stretch.  Given this change as well as other changes to MongoDB source and newer compilers, I could no longer compile MongoDB 3.0.14 with SSL.

After a few source tweaks and use of various compiler flags, I have manged to compile MongoDB core apps and tools.  These binaries do NOT support SSL and only run under Raspian Stretch on a Raspberry Pi 3:

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Official MongoDB 3.4 on ODROID-C2 under Ubuntu

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I’m a big fan of MongoDB but contrary to its “humongous” orientation, I like to think small as in ARM-based SBCs like the Raspberry Pi or ODROID-C2 and DBs under a terabyte 😉  You can get a lot of power out of tiny inexpensive computers and USB disk drives!  You can find my blog entries, below, for getting 32-bit MongoDB 3.0 working on R-Pi and 64-bit, MongoDB 3.2 working under ArchLinux ARM on ODROID-C2.

I had seen MongoDB community requests for a 64-bit ARM version and even a mention that there was “official experimental” development going on – including the efficient WiredTiger storage engine.  I recently perused the MongoDB Community Edition documentation for version 3.4 and saw a download option for “Ubuntu 16.04 Linux 64-bit ARM 64” on the MongoDB Download Center.  Ubuntu 16.04 is the default Linux supplied with the ODROID-C2 🙂  You can purchase a bare ODROID-C2 for US$40 at Hardkernel. Micro SD card or EMMC module with preinstalled Ubuntu Linux is extra.

Click more for installation instructions.

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MongoDB 3.2.10 running under Arch Linux ARM 64 bit

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ODROID C2 SBC

I use MongoDB as my database of choice as you can tell by my blog entries.  Under current Raspberry Pi OSs, MongoDB is limited by 32 bit binaries. Databases are restricted to 2GB.

The Raspberry Pi 3 sports an ARMv7 processor that supports 64 bits.  At this time (May 2016) there is no official OS support for 64 bits.  Raspbian and Arch Linux are only available with 32 bit support.  I expect that we WILL see 64 bit support sometime in the future 😉

While waiting, I looked around and found MongoDB 3.2.6 3.2.10 in the Arch Linux ARM aarch64 package repository.  I also found out that the ODROID C2 single board computer supports aarch64.  This SBC costs $40 and has better specs (for my DB purposes) than the R-Pi 3.  It has a 4-core ARMv8 processor running at 2GHz, 2GB of RAM and gigabit ethernet. It also supports WAY fast eMMC Flash storage in addition to Micro SD.  Android and Ubuntu are the officially supported OSs but Arch Linux ARM (64 bit) can be installed as well.

[UPDATE: 23 Mar 2017] If you prefer to use the default Ubuntu Linux for ODROID C2 as opposed to Arch, you can now install official MongoDB 3.4.  See this blog post.

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Using Python with MongoDB on Raspberry Pi 2 & 3

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mongodb plus pythonI’ve written about getting MongoDB running on the Raspberry Pi 2. View my other posts where you can get binaries (3.0.9) or learn how to compile from scratch (3.0.7). The mongo shell works great but you may want/need to code in Python, especially for device control or data logging, etc.

PyMongo is a Python distribution containing tools for working with MongoDB, and is the recommended way to work with MongoDB from Python. You can either use Python 2 or Python 3. Python 3 did not come on the minimal Raspbian Jessie image but can be installed using “sudo apt-get install python3”.

To install the appropriate PyMongo for MongoDB 3.0.x you can do the following from the command line. Note you could use “python3” where I use “python”, depending on your preference. I normally use the default Python 2.7.

Instructions after the break: More

MongoDB 3.0.9 binaries for Raspberry Pi 2 & 3 (Jessie)

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I’ve received feedback that some folks are having problems compiling MongoDB 3.0.7 per my instructions AND it takes a long time 😉

MongoDB 3.0.9 just became available but needs quite a few changes to source in order to compile on the Raspberry Pi.  I worked through MongoDB build scripts for ARCH ARM Linux and managed to “translate” for Raspbian (Jessie) Linux on the R-Pi 2.  Rather than creating patch files and writing instructions for building from source, I am providing my compiled binaries.  PLEASE do not post links to my binaries!  Feel free to download for personal use from this site.

[NOTE: I have compiled version 3.0.14 and created binaries for Raspbian Jessie for the R-Pi 2 & 3. NEW: I have also created 3.0.14 binaries for the R-Pi 3 running Raspbian Stretch. I have confirmed that the instructions in this blog entry work with the new binaries.]

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MongoDB 3.0.7 on Raspberry Pi 2!

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MongoDB logoI have successfully compiled MongoDB version 3.0.7 and tools on the Raspberry Pi 2.  Full instructions are after the break — click on “more“.  As usual I found great help from the Linux community for getting this to work on ARM7.  mongo, mongod, mongos, and tools are all working great.  The WiredTiger Engine does NOT work under 32-bit ARM but, AFAIK, all other components do 🙂

NOTE: I have made MongoDB 3.0.9 binaries available for Raspbian (Jesse) for R-Pi 2 – here.

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MongoDB on the Raspberry Pi 2

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Raspberry Pi 2 After purchasing a Raspberry Pi 2, I decided to move some of my projects to it.  I also added an external 2.5 inch USB drive via a USB hub.  I store various sensor information in a MongoDB database and needed everything to run on the R-Pi 2.  I chose to stick with the well-supported Debian Linux port, Raspbian Wheezy, as opposed to ARCH Linux that I used on my old R-Pi B+, as the R-Pi 2 has a quad core ARMv7 processor that requires a new kernel.

UPDATE (30 January 2016):  I’ve compiled MongoDB 3.0.9 and tools for R-Pi 2 Raspbian (Jessie).  Check here.

UPDATE (25 December 2015): Instructions for compiling MongoDB 3.0.7 and tools for R-Pi 2 running Raspbian Jessie are now available.  Check here.

UPDATE (8 November 2015): If you are running Raspbian Jessie, you can “apt-get install mongodb”.  This will result in an install of MongoDB v2.4.  Good enough for most uses and you get a working mongo shell 😉  If you want MongoDB v2.6.3, read-on!

I was back to hunting for a compatible MongoDB binary — or instructions on how to compile from source.  Research showed that MongoDB does not compile for ARM after version 2.6.3 🙁  Searching the ‘net led me to the “facat’ blog.” This blog shows how to cross-compile MongoDB 2.6.3 for ARM.  Precompiled binaries are also available.  NOTE that the mongo shell does NOT work correctly on the R-Pi.  “mongod”, the server, does work fine and can be accessed programmatically or via a mongo shell from another (non-R-Pi) computer.  I use “mongo” on my Mac to connect to “mongod” running on the R-Pi 2.

more after the break

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mongoDB 2.6 and Node.js 0.10.29 on Raspberry Pi

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mongoDB on Raspberry PiA while back, I compiled mongoDB 2.1 for Raspberry Pi based upon instructions found on other sites and kind work by developers sharing code on Github.  I acquired a Raspberry Pi B+ and tried to compile mongoDB as I had done previously.  I quickly found out that the (old) compiled version (2.1.1) no longer functions under Raspbian.

I had also been trying out Arch Linux for R-Pi as it was “lighter” and did not include all the GUI/X components that I don’t use.  I use R-Pi for more server centric things and use frame buffer apps for video and images (omxplayer, fbi, fim).

I saw a comment to a posting when Googling for new info for mongoDB on R-Pi.  It said, simply, “use Arch Linux”.  So I did!  I had a little trouble getting Arch Linux to run on the B+ but after a firmware update obtained by a “pacman -Syu” on a R-Pi model B, I could now boot and use Arch Linux on the R-Pi B+ 🙂

I did simple installs via “pacman -S” for “mongodb” and “nodejs”.  I now have full mongoDB 2.6.3 with utilities, Node.js 0.10.29 and npm 1.4.21 working just fine.  Sure mongoDB is pretty slow and can only handle 2GB DBs but I’ve partitioned my data into multiple DBs and combine queries and results using JavaScript.

My effusive thanks go to the Arch Linux Package maintainers!

Raspberry Pi meets mongoDB

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mongoDB on Raspberry PiI’ve been looking at noSQL databases in conjunction with Node.js. I have several Raspberry Pis that I have been using as development and test platforms. I have had good success with couchDB but have seen more examples and deployments using mongoDB. MongoDB is clearly developed on Intel processors but has been ported to non-Intel processors with different “endian”. Getting mongoDB to compile and run on a Raspberry Pi has been a challenge — as seen by the dearth of info when Googling. I did run across a couple of useful sites with links and directions on how to compile mongoDB on the R-Pi BUT both had a few problems. I’ve managed to get mongoDB version 2.1.1 working.  Specific instructions — More