Topic: [blog] Nxt-in-a-box: How to setup a dedicated Nxt node on a Raspberry Pi 2 (Read 23656 times)

coretechs · « **on:** January 04, 2016, 05:03:10 pm »

https://nxtportal.org/blog/nxt-in-a-box-rpi2.html

Please direct questions/comments here. I will try to keep the links updated.

History:
2016.1.27 - updated references to Nxt release 1.7.5
2016.1.31 - added Oracle Java install instructions, removed OpenJDK instructions, added simplified SSL/TLS configuration steps
2016.4.2 - added blockchain download links
2016.4.19 - updated Java & Nxt release versions/links, added Nxt.org link.
2017.2.11 - updated Java & Nxt release versions/links
2017.5.8 - updated screen startup script instructions + Java & Nxt release links

yassin54 · « **Reply #1 on:** January 04, 2016, 05:21:31 pm »

Thank you very much for this tutorial!!

Tweeted!! https://twitter.com/MagicNxt/status/684061829346254848

apenzl · « **Reply #2 on:** January 04, 2016, 08:02:17 pm »

Wonderful! Thanks.

phideas · « **Reply #3 on:** January 04, 2016, 11:03:12 pm »

Good job! Looking forward to your next blog post.

Fern · « **Reply #4 on:** January 05, 2016, 04:48:27 am »

Great post. With some tweaks, can this work on my pi 1 Model B or is it best to upgrade to pi 2?

allwelder · « **Reply #5 on:** January 05, 2016, 06:51:34 am »

Quote from: Fern on January 05, 2016, 04:48:27 am

Great post. With some tweaks, can this work on my pi 1 Model B or is it best to upgrade to pi 2?

I tested with pi 1 B,worked well.

Fern · « **Reply #6 on:** January 05, 2016, 07:19:36 pm »

Quote from: allwelder on January 05, 2016, 06:51:34 am

Quote from: Fern on January 05, 2016, 04:48:27 am
Great post. With some tweaks, can this work on my pi 1 Model B or is it best to upgrade to pi 2?
I tested with pi 1 B,worked well.

Thanks, what about the memory and swap files changes?

crimi · « **Reply #7 on:** January 06, 2016, 11:17:35 am »

good clean tutorial, thanks shared on peerexplorer

MrCluster87 · « **Reply #8 on:** January 12, 2016, 10:08:31 am »

Hi Coretechs!! Really nice tutorial indeed.

I would like to republish it on nxter.org and translate it in our 9 languages beside english. What's your thought?

coretechs · « **Reply #9 on:** January 16, 2016, 04:38:14 pm »

Quote from: MrCluster87 on January 12, 2016, 10:08:31 am

Hi Coretechs!! Really nice tutorial indeed.

I would like to republish it on nxter.org and translate it in our 9 languages beside english. What's your thought?

Thanks! Translation would be awesome, please feel free to republish.

macht · « **Reply #10 on:** January 17, 2016, 12:10:44 am »

Nice tutorial! Only thing I cannot seem to get working is setting up SSL.

After entering this command, (keytool -importkeystore -srckeystore mycert.pkcs12 -srcstoretype PKCS12 -destkeystore keystore) , I typed "storepwd" for all three prompts thereafter.

I receive an error after the third time: (keytool error: java.io.IOException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded)

Any help is appreciated!

coretechs · « **Reply #11 on:** January 17, 2016, 01:33:42 am »

Quote from: macht on January 17, 2016, 12:10:44 am

Nice tutorial! Only thing I cannot seem to get working is setting up SSL.

After entering this command, (keytool -importkeystore -srckeystore mycert.pkcs12 -srcstoretype PKCS12 -destkeystore keystore) , I typed "storepwd" for all three prompts thereafter.

I receive an error after the third time: (keytool error: java.io.IOException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded)

Any help is appreciated!

Hmm, I'm not sure what is causing that error. Perhaps you are referencing a file from an earlier attempt that has a different password? Have you tried deleting mycert.*, privkey.pem and the keystore and starting from scratch? I just recreated another test cert (using "storepwd" for every password) on my rpi2 using the steps from the wiki without issue.

Tosch110 reported running into the same error in Riker's thread (https://nxtforum.org/public-nodes-vpss/setting-up-sslhttps-on-a-public-node/20/) perhaps he knows a solution.

MrCluster87 · « **Reply #12 on:** January 21, 2016, 09:41:09 am »

Quote from: coretechs on January 16, 2016, 04:38:14 pm

Quote from: MrCluster87 on January 12, 2016, 10:08:31 am
Hi Coretechs!! Really nice tutorial indeed.

I would like to republish it on nxter.org and translate it in our 9 languages beside english. What's your thought?

Thanks! Translation would be awesome, please feel free to republish.

Published!!! http://nxter.org/how-to-set-up-a-nxt-node-on-a-raspberry-pi-2/

Translations will follow shortly

.

Thank you again!!

MrCluster87 · « **Reply #13 on:** January 30, 2016, 12:51:39 pm »

Hey!!

Let's say that I want to build a future proof system, so let's say that the Nxt Blockchain would be 15 Gb, is it possible to associate a NAS to this raspberry pi 2 full node config?

Since I'm lazy, I would go with a plug and play solution such as Western Digital WD My Cloud: https://www.youtube.com/watch?v=078xdmH1DiM

what are your suggestions?

RocketBunny · « **Reply #14 on:** January 30, 2016, 03:51:36 pm »

Quote from: MrCluster87 on January 30, 2016, 12:51:39 pm

Hey!!

Let's say that I want to build a future proof system, so let's say that the Nxt Blockchain would be 15 Gb, is it possible to associate a NAS to this raspberry pi 2 full node config?

Since I'm lazy, I would go with a plug and play solution such as Western Digital WD My Cloud: https://www.youtube.com/watch?v=078xdmH1DiM

what are your suggestions?

Just move nxt_db folder to your WD and make symlink from nxt folder.

coretechs · « **Reply #15 on:** January 30, 2016, 05:14:02 pm »

Quote from: RocketBunny on January 30, 2016, 03:51:36 pm

Quote from: MrCluster87 on January 30, 2016, 12:51:39 pm
Hey!!

Let's say that I want to build a future proof system, so let's say that the Nxt Blockchain would be 15 Gb, is it possible to associate a NAS to this raspberry pi 2 full node config?

Since I'm lazy, I would go with a plug and play solution such as Western Digital WD My Cloud: https://www.youtube.com/watch?v=078xdmH1DiM

what are your suggestions?

Just move nxt_db folder to your WD and make symlink from nxt folder.

Good suggestion. Step-by-step instructions (assuming your external drive is already mounted):

Code: [Select]

mv ~/nxt/nxt_db /path/to/WD_mountpoint/
ln -s /path/to/WD_mountpoint/nxt_db/ ~/nxt/nxt_db

If you don't want to use a symlink you can configure a different database path in your nxt.properties file using the nxt.dbUrl configuration option instead. Note that you would still need to move the nxt_db directory to your external disk first.

Code: [Select]

nxt.dbUrl=jdbc:h2:/path/to/WD_mountpoint/nxt_db/nxt;DB_CLOSE_ON_EXIT=FALSE;MVCC=TRUE;MV_STORE=FALSE

penoze · « **Reply #16 on:** January 31, 2016, 02:19:14 pm »

trying out now

This is also the first time i use a raspberry.

Maybe this is a n00b question but what i must fill in here:

The following is an example configuration file:

nxt.myAddress=12.34.56.78
nxt.apiServerHost=0.0.0.0
nxt.allowedBotHosts=*

coretechs · « **Reply #17 on:** January 31, 2016, 02:23:05 pm »

Quote from: penoze on January 31, 2016, 02:19:14 pm

trying out now
This is also the first time i use a raspberry.

Maybe this is a n00b question but what i must fill in here:

The following is an example configuration file:

nxt.myAddress=12.34.56.78
nxt.apiServerHost=0.0.0.0
nxt.allowedBotHosts=*

You only need to put your public IP address for nxt.myAddress if you opened the port on your firewall. Otherwise you can remove that parameter and leave the other two as they are.

coretechs · « **Reply #18 on:** January 31, 2016, 02:38:54 pm »

I'm in the process of updating the post to recommend Oracle Java instead of OpenJDK for performance reasons.

If you have already installed OpenJDK, it's not too difficult to remove it. Stop the Nxt server and run the following:

Code: [Select]

sudo apt-get remove openjdk-8-jre
sudo apt-get autoremove

Download the Oracle JDK version for Linux ARM 32 Hard Float ABI from here:
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

To use wget you have to include a header to accept the Oracle license:

Code: [Select]

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/8u71-b15/jdk-8u71-linux-arm32-vfp-hflt.tar.gz

Extract the file:

Code: [Select]

tar xvzf jdk-8u71-linux-arm32-vfp-hflt.tar.gz

Rename and move the extracted directory:

Code: [Select]

sudo mv jdk1.8.0_71/ /usr/local/java

Update your system to use java at this location:

Code: [Select]

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/bin/javac" 1
sudo update-alternatives --set java /usr/local/java/bin/java
sudo update-alternatives --set javac /usr/local/java/bin/javac

Set your environment variables:

Code: [Select]

sudo nano /etc/profile

Add the following to the end of the file:

Code: [Select]

JAVA_HOME=/usr/local/java
JRE_HOME=$JAVA_HOME/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME
export JRE_HOME
export PATH

Reload /etc/profile and check the java version:

Code: [Select]

source /etc/profile
java -version

If everything is correct you should see the following output:

java version "1.8.0_71"
Java(TM) SE Runtime Environment (build 1.8.0_71-b15)
Java HotSpot(TM) Client VM (build 25.71-b15, mixed mode)

When new versions of Oracle Java are released, you can simply extract them and overwrite the directory at /usr/local/java.

penoze · « **Reply #19 on:** January 31, 2016, 02:47:23 pm »

Quote from: coretechs on January 31, 2016, 02:23:05 pm

Quote from: penoze on January 31, 2016, 02:19:14 pm
trying out now
This is also the first time i use a raspberry.

Maybe this is a n00b question but what i must fill in here:

The following is an example configuration file:

nxt.myAddress=12.34.56.78
nxt.apiServerHost=0.0.0.0
nxt.allowedBotHosts=*

You only need to put your public IP address for nxt.myAddress if you opened the port on your firewall. Otherwise you can remove that parameter and leave the other two as they are.

okay if i fill in:

nxt.myAddress=(my ipadress)
nxt.apiServerHost=0.0.0.0
nxt.allowedBotHosts=*

It should be good?

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Author Topic: [blog] Nxt-in-a-box: How to setup a dedicated Nxt node on a Raspberry Pi 2 (Read 23656 times)