New witness running lightest Steem MIRA node in the town 🐭 @mysia

35344589@mysia'a Genesis block number

<h1><span><a href="/@mysia">@mysia is a witness! <p dir="auto"><span>The day 2019-08-07 at 13:08:57 was the moment when <a href="/@mysia">@mysia became true witness in the Steem network. At this time first successful block was produced. It was second attempt to generate one. First failed because of wrong configuration, so was missed - I believe it was wrong swap RAM settings for MIRA. From now I hope every new will follow a success. <h1>Experimental light node <p dir="auto">Idea of runing own witness riddled in my head for many months. High hardware requirements blocked the way to do so. Until MIRA came. Multi Index RocksDB Adapter allows to move blockchain real time calculations from RAM memory to disk drive - for a price of replaying time. After full replay, node runs in the speed of classic non-MIRA setting.<br /> The goal of this experiment was to verify how low the hardware specifications can be to be able to run witness in the field. It is shocking that old PC can handle that! <p dir="auto"><center><em>Yes, it is my old personal computer I do not use now. <h1>Hardware specification <div class="table-responsive"><table> <thead> <tr><th>Hardware<th>Specs <tbody> <tr><td>OS<td>Ubuntu 18.04.2 LTS <tr><td>CPU<td>Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz <tr><td>SSD<td>Crucial 500 GB CT500MX500SSD1 <tr><td>RAM<td>2x Kingston 8GB DDR3 <tr><td>Internet<td>LTE GSM <tr><td>Location<td>Personal computer somewhere in Poland (EU) <p dir="auto">As You see, the toaster sits under $500. Below test prove that it is far over enough to do job. Eg. I don't need as much RAM. To be honest only 4GB RAM should be sufficient. CPU could be a little slower too. Even Intel i3 or Core2Duo should work. Look at Internet connection - it is not wired! Enough for a backup node.<br /> My MIRA took 3 days to replay whole blockchain and start streaming blocks. It supports <code>v0.21.0 Steem version. <p dir="auto"><center><img src="https://images.hive.blog/768x0/https://files.steempeak.com/file/steempeak/mysia/nCT5wVpI-image.png" alt="image.png" srcset="https://images.hive.blog/768x0/https://files.steempeak.com/file/steempeak/mysia/nCT5wVpI-image.png 1x, https://images.hive.blog/1536x0/https://files.steempeak.com/file/steempeak/mysia/nCT5wVpI-image.png 2x" /><br /> <em>htop system monitor. RAM usage grows to 2.7 GB in the peak when producing block <h1>Plans <p dir="auto"><br /> Let's see how this all behave after <code>HF21 arrive and <code>SMTs come.<span>I plan to run this node as long as I will stay in Steem network. <a href="/@mysia">@mysia is not only a backup node to produce blocks. It is very helpful to keep in very touch with up to date blocks and newest transactions coming. I have to confess that node helps very much to my scripts (eg. curation challenges, Steemmonsters trading, some pretty block sniping etc.) This is far more valuable than just generating STEEMs as a witness. <p dir="auto"><span>Somewhere in my mind there are plans to support <a href="/trending/polish"> #polish community in some way. It needs some time to develop. More will be clear after next hardfork and communities open. <h1>Useful links <ul> <li><a href="https://github.com/steemit/steem/commit/a470bc283260e582b56897bd5c68107aa0289f18" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">a470bc2 commit.<span><a href="https://github.com/steemit/steem" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://github.com/steemit/steem - Steem master build source code. My node runs on <li><span><a href="https://github.com/Someguy123/steem-docker/tree/mira" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://github.com/Someguy123/steem-docker/tree/mira - Steem docker images with some helpful tools <li><span><a href="https://github.com/steemit/condenser" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://github.com/steemit/condenser - Steem witness tool for newbies :p <li><span><a href="https://steem.chat/channel/witness" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://steem.chat/channel/witness - Steem.chat <a href="/trending/witness"> #witness channel <li><span><a href="https://steem.arcange.eu/witnesses" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://steem.arcange.eu/witnesses - Steem witnesses real-time table comparison <h1>Support <p dir="auto"><code>@mys#4442<span>If You have any questions how to host Your own witness node like I did, feel free to ask under this post or via Steem.Chat <a href="https://steem.chat/direct/mys" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://steem.chat/direct/mys or via Discord <p dir="auto"><br /><span>You can support my experimental node by voting for me (<a href="/@mysia">@mysia) at <a href="https://steemit.com/~witnesses" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://steemit.com/~witnesses page.<span> Alternative direct SteemConnect link is <a href="https://beta.steemconnect.com/sign/account-witness-proxy?proxy=mysia" target="_blank" rel="nofollow noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://beta.steemconnect.com/sign/account-witness-proxy?proxy=mysia Thanks!