Today @howo published How to participate in the tesntets this week (full guide) which made me want to try his guide to prepare for the next HF24 Eclipse.

It's perfect, I just have a VPS server on standby that I can play with. A 4 vCores with 8Gb of RAM and 160Gb in NVMe, I think it will be efficient, since the hardware requirements are not huge.

_{Original photo by Jongsun Lee on Unsplash}

Here we go!

Warning:

You can't install Hard fork 23 on Ubuntu 20.04 LTS (Focal Fossa). it not have package libboost-signals-dev 🥺

Signals (v1) is now removed. Its removal was announced in 1.68 and its deprecation was announced in 1.54. Boost 1.68 is the last release that provides this library.

My first try of `HF24 Eclipse` with an Ubuntu 18.04 LTS (Bionic Beaver)

In order to be able to compile, I still had to add a swap file of 8Gb

_{Htop took at 73% of the build}

How to add a Swap File

cd /
sudo dd if=/dev/zero of=swapfile bs=1M count=8000
sudo mkswap swapfile
sudo swapon swapfile
sudo nano etc/fstab

Add the line given below, save and close.

/swapfile none swap sw 0 0

To check

cat /proc/meminfo

A better Time Synchronization with NTP

For a better time synchronization, I will use the NTP packet.

Before installing ntpd, we should turn off timesyncd (the default manager for time synchronization):

witness@vps-cb013bf5:~$ sudo timedatectl set-ntp no

To install the NTP packet run the command

witness@vps-cb013bf5:~$ sudo apt install ntp

ntpd will be started automatically after install. You can check the version with the command

witness@vps-cb013bf5:~$ sntp --version
sntp 4.2.8p12@1.3728-o (1)

We need to edit the ntp.conf file to replace the default ubuntu.pool with something closer. To do this, you first need to check here https://www.ntppool.org/zone/@ which are the closest pool servers.

Edit the ntp.conf file

witness@vps-cb013bf5:~$ sudo vim /etc/ntp.conf

Replace

# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board
# on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for
# more information.
pool 0.ubuntu.pool.ntp.org iburst
pool 1.ubuntu.pool.ntp.org iburst
pool 2.ubuntu.pool.ntp.org iburst
pool 3.ubuntu.pool.ntp.org iburst

By your nearest NTP pool servers (fr in my case)

# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board
# on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for
# more information.
pool 0.fr.pool.ntp.org iburst
pool 1.fr.pool.ntp.org iburst
pool 2.fr.pool.ntp.org iburst
pool 3.fr.pool.ntp.org iburst

Restart the service

witness@vps-cb013bf5:~$ sudo service ntp restart

Check if everything OK

witness@vps-cb013bf5:~$ ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 0.fr.pool.ntp.o .POOL.          16 p    -   64    0    0.000    0.000   0.000
 1.fr.pool.ntp.o .POOL.          16 p    -   64    0    0.000    0.000   0.000
 2.fr.pool.ntp.o .POOL.          16 p    -   64    0    0.000    0.000   0.000
 3.fr.pool.ntp.o .POOL.          16 p    -   64    0    0.000    0.000   0.000

Increase the max open files limit

To avoid the problem of Too many open files we need to make a few changes to the ulimit

Edit the limits.conf file

witness@vps-cb013bf5:~$ sudo vim /etc/security/limits.conf

Add the following lines

root            soft     nproc          999999
root            hard     nproc          999999
root            soft     nofile         999999
root            hard     nofile         999999
witness         soft     nproc          999999
witness         hard     nproc          999999
witness         soft     nofile         999999
witness         hard     nofile         999999

Edit the common-session file

witness@vps-cb013bf5:~$ sudo vim /etc/pam.d/common-session

Add the following line

session required        pam_limits.so

Reboot the server for the change to take effect.

Check the open files limit (need to be connected with the right user!)

witness@vps-cb013bf5:~$ ulimit -n
999999

The Result

Check of the version

First launch

Send the transaction from wallet

And finally my server makes blocks

On the Testnet it's not like in Production where I validate 1 block every 3 and a half days, here it's a lot of work 😁🤣😋

My second try of `HF24 Eclipse` with an Ubuntu 20.04 LTS (Focal Fossa)

I used more time than expected for the first try and this post so for the second try it will be later 😉

I let running this server so you're free too use it if needed

http://hf24.mintrawa.com:8090
wss://hf24.mintrawa.com:8091
hf24.mintrawa.com:2001

Thanks for reading :)

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harpagon (63) 4 years ago

Nice! That's crazy the amount of RAM required just to compile the software...😅
I once wanted to try to do some dev on hived, once I had read the specifications for the building machine, I just gave up 😂

$0.00

1 vote

mintrawa (63) 4 years ago

Thanks, yes it's a little bit crazy, this is the problem with developers who didn't experienced the lean years when the first computers had only a handful of RAM, they put aside the optimization of resources to save time 🤣 It's sure that surprisingly it represents an investment without being sure of any ROI, It's a bit expensive toy 😅

_{Witness FR - Gen X - Geek 🤓 Gamer 🎮 traveler ⛩️}

$0.08

mintrawa (63) 4 years ago (edited)

My #posh tweet:

Testnet HF24 Eclipse: Feedback about my installation 👍