Running a Full Bitcoin Node for Investors

Need help setting up a full node on CentOS 6 /r/Bitcoin

Need help setting up a full node on CentOS 6 /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Point me the right direction installing full node with UASF on older distros. (CentOS 6) /r/Bitcoin

Point me the right direction installing full node with UASF on older distros. (CentOS 6) /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

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submitted by jbarba4 to jobbit [link] [comments]

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submitted by jbarba4 to forhire [link] [comments]

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submitted by jbarba4 to forhire [link] [comments]

Looking for software to concurrently run Cash and Core nodes.

Hi /btc,
I'm looking for software recommendations to run a full node for both Core and Cash blockchains concurrently, preferably on a single server, without having to obtain a second IP. I recently moved to a town with a municipally-owned ISP, access to GB fibre, and I had a spare box, so I was hoping to help out the community.
Unfortunately, reference clients for both chains want to use port 8333, which leads to a collision. I lack enough familiarity with the codebase+time+energy to hack together a proxy service to switch requests between both clients. The discussion on the Bitcoin Cash project quickly became snarky when asked to change the default port, so I don't see any movement happening there in the near future (https://github.com/Bitcoin-ABC/bitcoin-abc/issues/25). Core, of course, fails to see this as a problem (since they are the One True ChainTM and there are no others /s)
A quick search of this subreddit showed that Bitcoin Classic used to do this, but it looks like the project was shut down after the 2mb fork debacle.
Bonus points for a solution that runs on Linux/is POSIX-compliant, since I'd really rather not to spin up a Windows VM to do this. Extra bonus points for something with a repo/prebuilt binaries for CentOS 7.
While this may be a stretch, I'm looking for a technical solution please, and not a discussion of the relative merits of cash vs. core.
submitted by uber_poutine to btc [link] [comments]

Coin-a-Year: Raiblocks

Howdy, folks! ♫Welcome back to the show that never ends!♫
I've decided it's high time I did a Coin-a-Year on Raiblocks. This is a special feature I do to recycle old material revisit past coins I've covered of special note a year or more later. I originally posted my Coin-a-Day feature about Raiblocks on this subreddit March 7th, 2016; it didn't get much attention then, but I have a strange feeling people might be slightly interested to see the difference now.
Below is the original report. I'll strike out what is wrong now, and add [bracketed notes] for updated commentary.
I'm no expert on the current state of Rai by any means. I'd honestly thought the coin was dead later in 2016; just didn't check back into it. And now here we are.
Bias note: I got a significant bit of Rai from the original faucet. I have sold a fraction of that this year but still have a lot of it. I'm biased both by holding it and from selling it.
Hello, y'all! I saw a comment pointing to this coin as being designed for free transactions, which is a core interest to me, so I decided to look into it a little bit and do a write-up. Enjoy!
Summary
Today's coin is Raiblocks (RAIXRB), which are designed to support free transactions and no block rewards. The coins will be initially distributed by a CAPTCHA controlled faucet with an annual halving rate.
[Faucet now closed.]
Initial creation: October 15th, 2015 [1]
Coin supply: 4.8 x 1012 rai current supply in circulation; 3.4 x 1014 rai maximum supply [2]
[XRB is the new standard base unit which was Mrai before (and still I suppose). Also, supply is distributed. So we now have about 133 million XRB as the outstanding and max supply.]
All-time high: Not yet traded as far as I know. [3]
[About $37.5 or 0.0028 per CMC max so far, about two days ago]
Current price: Not yet traded as far as I know. [3]
[Depending on the exchange and moment, somewhere around $30-35 currently or about 0.002-0.0022 BTC]
Current market cap: Not yet traded as far as I know. [3]
[Somewhere around $4 billion]
Block rate (average): Unlimited [4]
Transaction rate: ? [5]
[I'm too lazy to find this right now. Maybe someone will chime in with it in the comments.]
Transaction limit (currently): None [6]
Transaction cost: Free [7]
Rich list: ? [8]
[https://raiblocks.net/page/frontiers.php - Top 100 own ~63%]
Exchanges: None yet. [3]
[Bitgrail and Mercatox have been the two main. Kucoin just added it and Binance has it in its voting which is ending shortly.]
Processing method: Proof-of-stake [9]
[Above refers I believe to dispute resolution (double spend). There's also a minor PoW for send/receive.]
Distribution method: Faucet [10]
Community: New-born [11]
[Fairly strong and growing. Good memes. Slightly drunk on euphoria currently.]
Code/development: Active development at https://github.com/clemahieu/raiblocks
Leadership: Colin LeMahieu
Innovation or special feature: Protocol designed without a limited throughput or block rate, as well as not supporting block rewards nor transaction fees.
Description
Raiblocks is, as far as I know, the first cryptocurrency designed from its start to not support any block reward or transaction fee. In addition, it has no block size or rate limit. Further, all coins will be initially distributed through a captcha-controlled faucet on the main site. It's a bold attempt, going against the conventional wisdom of what is possible.
Edit: I should mention a couple things. First, there is a PoW attached to transactions as an anti-spam defense. This PoW can be attached by the recipient rather than the sender as well, which means that large automated sends could be done without the PoW if needed and the recipient could attach that.
Also, the natural question coming from how all the rest of the cryptocurrencies work is "how does it work without an incentive to run a node?" The idea presented in the whitepaper is basically that operating a cryptocurrency has a lot of expenses, and most of them are paid "out-of-band", so why not have funding nodes be that way too? It leaves it open to whatever other incentives there may be, of which the most obvious are first: that there are only full nodes so far, so if one wants to use the coin, then one is going to run a node. More long-term, even after SPV, presumably large holders might choose to operate one regardless. Someday, if merchants accept it, they would presumably run one. And enthusiasts. It sounds very tenuous, and this is why this is such an audacious attempt in my opinion.
After six months running, the number I heard for the blockchain size was about 20 MB, which is insanely small, but the coin has gotten so little attention that I suspect there hasn't been significant load yet. I'm very curious to see how it will perform under load. I think its design actually makes it more efficient when there aren't transactions, because nothing is added to the blockchain (actually termed block lattice here, but using blockchain generically to refer to any cryptocurrency's core data), unlike in the conventional / Bitcoin model where blocks are being generated whether or not there are transactions in them. Of course that doesn't matter much when there are tons of transactions, as on Bitcoin currently, but, for instance, in Nyancoin, we accumulate tons of empty blocks all the time, where Raiblocks would just wait for more transactions. However, again, under load perhaps it could start growing "too quickly" by some metric, or eventually reach the point where it starts losing users because of the requirements of running a full node.
I think it will be very interesting to see how this turns out in practice.
[And it's certainly going to be interesting to see how it goes. So far, it's still working. Which is better than I'd hoped or expected.]
Community
The coin is relatively young but even for a young coin it's not a huge community. But there is clear discussion and interest both on BCT and on their Google Group. It looks like a healthy start to me.
[As per my comment above: Fairly strong and growing. Good memes. Slightly drunk on euphoria currently. Seems well-intentioned generally: looking to try to have some caution mixed in and putting up a bug bounty and that sort of thing. Still has a little bit of some of the common negative characteristics in crypto communities but this may be due to growth from outside communities overwhelming the local culture temporarily more than anything.]
Footnotes
[1] https://bitcointalk.org/index.php?topic=1208830.0 - Initial announcement, didn't get much attention apparently. Also, this thread mentions a built-in block-explorer with a rich list. I don't have a working client to access this at the moment but that's pretty cool.
[2] There are 2128 total units, and a rai is 1024 total units, so total supply should be about 3.4 x 1014. https://github.com/clemahieu/raiblocks/wiki/Distribution-and-Mining Distribution has been going since about November 2015, so I would expect about one-third of the initial 50% to be distributed. The block explorer seems pretty primitive; it just takes a hash. No overall stats. So I'll use that one-third of the initial 50% estimate. So about 5.7 x 1013. Note by comparison that the faucet gives 108 coins at a time currently.
Actually, this comment puts the amount of rai in circulation as 4,763,023...that can't be right, that many Mrai I think? Yeah, 1030 stated as divider there. So 4.8 x 1012 rai in current circulation.
[3] https://groups.google.com/forum/#!topic/raiblocks/PSbX_onjLfU - This topic discusses it a bit. Also comments from meor in this thread
However, I have also paid 100 NYAN for 100 Mrai. This is basically a test transaction, but 1 NYAN for 1 Mrai (106 rai) would imply a marketcap of 4.8 million NYAN, or about 0.34 BTC in current circulation. I had initially thought this was higher before recalculating with the actual amount circulating as per [2]; may also have screwed up the math initially or here.
[4] https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - whitepaper ; each transaction could be thought of as its own block if I am grokking this right. It goes through as fast as the network can handle it. There is no fixed interval or period.
[5] I believe https://raiblocks.net/#/block-explorer is the only block explorer so far and it only supports entering a hash, so I don't have a way to determine the transactions in the last 24 hours.
[6] https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - The protocol is designed without a limit if I understand correctly.
[7] https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - The protocol is designed without transaction fees or block rewards.
[8] As per [5], the block explorer does not support this. There area couple addresses known to be the initial generation which will go into the faucet, but beyond that I don't know the distribution. There's supposed to be a rich list available in the built-in explorer, but I was unable to get a client running on my out-of-date systems (32-bit Windows (64-bit Windows client only), and CentOS 6 (glibc too old)).
[9] In general all full nodes are maintaining their own copies of all the information, but as I understand it the dispute resolution is based on voting by ownership of rai.
[10] All rai will be distributed through https://raiblocks.net/#/start as per https://github.com/clemahieu/raiblocks/wiki/Distribution-and-Mining
[11] There's been some discussion on BCT as well as on the google group: https://groups.google.com/forum/#!forum/raiblocks ; there's a new subreddit /raiblocks, but it's still set on private for some reason at the time of writing this footnote (just wrote a comment to meor noting this).
Further reading
https://raiblocks.net - Main site
https://github.com/clemahieu/raiblocks - Repo with documentation on the github wiki.
https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - whitepaper
https://groups.google.com/forum/#!topic/raiblocks - Google group
https://bitcointalk.org/index.php?topic=1219264.0 - Block lattice discussion
Disclosure, disclaimer
Disclosure: I have made an agreement to purchase 100 Mrai and have paid 100 NYAN for this. I have no other financial interest in Raiblocks currently, but I do intend to get a client ultimately (my current OSes are incompatible from being too old (one is 32-bit Windows; other CentOS 6 with too old glibc)) and get free coins from the faucet and play with this more.
Disclaimer: This writing is intended for edutainmental purposes only. Any accurate information conveyed is purely incidental. No warranty of fitness for any fit purposes is implied. This column known to the State of California to cause cancer. Cave canum. Carpe carp. Caveat lector.
Up next:
Tell me what coin to write about next by sponsoring an article! A sponsored article would likely have more discussion than I did here, and less than my Coin-a-Year report on Nyancoin.
Edit: /RaiBlocks is now public! New subreddit, but hopefully it'll build up a bit over time. :-)
Edit 2: Added more than the stub discussion discussion section I'd initially done.
Okay, so those last links are generally outdated and old information and I stopped commenting through all that. Go to https://raiblocks.net/ and/or /raiblocks if you want to learn more. :-)
Again, I'm heavily biased from having gotten incredibly fortunate from this price rise and having been fortunate enough to have been introduced to the coin early on. I'm not giving trading advice. The market is crazy but I have no idea if it'll go up, down, sideways, or loop-de-loop.
Have fun and stay safe!
submitted by coinaday to CryptoCurrency [link] [comments]

Bitcoin Core & Lightning Network (very easy installation!) No root access!

Hi!
I finished the fine tools as i think
I created Makefile utilities for bitcoind & lnd compilation under $HOME directory (no root access!)
This makefile does everything for full bitcoin node and lightning network node. This kit was created for CentOS 6.* but it works in Ubuntu / Linux Mint OSes too and may be will work in 90% Unix systems.
Details:
It compiles from sources under $HOME directory: compilers (gcc 7.1, go, node.js, python2 & python3) and tools (autoconf & autotools and etc), all libraries (boost, openssl and more), bitcoind daemon, lnd daemon , lncli-web client (and node.js for this) and does all configuration for you! You need only create a wallet in lnd. It works fine with UPnP routers (from sources too!) and can define network configuration (real public IP & network interfaces)
So if you want to have bitcoind & lnd node you need only to do:
make i-want-lightning
make set-up-lightning-mainnet
And after you can run:
mainnet-lightning-start
And after you will have bitcoind full node & lnd node with web interface (lncli-web)
You can setup in one host mainnet & testnet daemons without any conflicts.
Enjoy!
URL: https://github.com/Perlovebitcoin-kit-makefile
Perlover
submitted by Perlover to Bitcoin [link] [comments]

Need help to rub BU full node

I bought a few VPS to run full node. On one of them it is installed CentOS and BU install and operate without problems. On the other installed Ubuntu on them there is an error "Please check that your computer's date and time are correct! If your clock is wrong Bitcoin Core will not work properly" Date is set up properly, I checked several times. NTP is also installed and running.
submitted by arruah to btc [link] [comments]

Instructions for settings up a Bitcoin Unlimited node on a VPS

I've been meaning to setup a bitcoin unlimited node for a while and today I finally got some time to do it.
I thought it would be a very straightforward process but I'm struggling to find a clean, step-by-step tutorial. Clicking on the "Contribute" link from the official website sends me to the improvement proposals (instead of a list of ways I could contribute, for example).
So, I've been following the bitcoin.org tutorial for running a Bitcoin Core Daemon and will replace the .tar.gz file download by the one from bitcoinunlimited.info.
Would you say that is the way to go?
Thanks!
(I'm running a Centos 7 64-Bit VPS, btw)
submitted by leolobato to btc [link] [comments]

Looking to run a Full Node in a cheap VPS for only $5/m

Came across this and thought you guys might like. Been messing around with Linux a lot more lately and was thinking about running a full node on a VPS. I want one of those $5/m VPSs. The huge dilemma that I keep coming across is that the blockchain is roughly 30 GB right now and all of the VPS plans I come across require you to upgrade to a higher end plan with more resources (RAM + CPU) in order to obtain enough storage space to store the block chain. This despite me not wanting to pay for the extra resources.
Anyways just came across Virpus. They offer for $5/m a Xen paravirtualized VPS with 1 GB of RAM and 4 cores with 50 GB of storage. Plus they have a wider variety of distrobutions to choose from than most VPS. In addition to the standard offering of Debian, Ubuntu, and CentOS they also offer Slackware, Arch, Gentoo, and Scientific Linux and the storage is SSD Cached.
Edit: Oh and it gets even better they accept Bitcoin too!
submitted by PoliticalDissidents to Bitcoin [link] [comments]

How to setup Lightning Mainnet node on Centos?

All I see are how-tos and walkthroughs on setting up with Ubuntu. But I already run a bitcoin full-node using Centos.
So how does one setup Lightning Mainnet on a Centos machine??!!
submitted by icdawg to Bitcoin [link] [comments]

Coin-a-Day: Raiblocks

Hello, y'all! I saw a comment pointing to this coin as being designed for free transactions, which is a core interest to me, so I decided to look into it a little bit and do a write-up. Enjoy!
Summary
Today's coin is Raiblocks (RAI), which are designed to support free transactions and no block rewards. The coins will be initially distributed by a CAPTCHA controlled faucet with an annual halving rate.
Initial creation: October 15th, 2015 [1]
Coin supply: 4.8 x 1012 rai current supply in circulation; 3.4 x 1014 rai maximum supply [2]
All-time high: Not yet traded as far as I know. [3]
Current price: Not yet traded as far as I know. [3]
Current market cap: Not yet traded as far as I know. [3]
Block rate (average): Unlimited [4]
Transaction rate: ? [5]
Transaction limit (currently): None [6]
Transaction cost: Free [7]
Rich list: ? [8]
Exchanges: None yet. [3]
Processing method: Proof-of-stake [9]
Distribution method: Faucet [10]
Community: New-born [11]
Code/development: Active development at https://github.com/clemahieu/raiblocks
Leadership: Colin LeMahieu
Innovation or special feature: Protocol designed without a limited throughput or block rate, as well as not supporting block rewards nor transaction fees.
Description
Raiblocks is, as far as I know, the first cryptocurrency designed from its start to not support any block reward or transaction fee. In addition, it has no block size or rate limit. Further, all coins will be initially distributed through a captcha-controlled faucet on the main site. It's a bold attempt, going against the conventional wisdom of what is possible.
Edit: I should mention a couple things. First, there is a PoW attached to transactions as an anti-spam defense. This PoW can be attached by the recipient rather than the sender as well, which means that large automated sends could be done without the PoW if needed and the recipient could attach that.
Also, the natural question coming from how all the rest of the cryptocurrencies work is "how does it work without an incentive to run a node?" The idea presented in the whitepaper is basically that operating a cryptocurrency has a lot of expenses, and most of them are paid "out-of-band", so why not have funding nodes be that way too? It leaves it open to whatever other incentives there may be, of which the most obvious are first: that there are only full nodes so far, so if one wants to use the coin, then one is going to run a node. More long-term, even after SPV, presumably large holders might choose to operate one regardless. Someday, if merchants accept it, they would presumably run one. And enthusiasts. It sounds very tenuous, and this is why this is such an audacious attempt in my opinion.
After six months running, the number I heard for the blockchain size was about 20 MB, which is insanely small, but the coin has gotten so little attention that I suspect there hasn't been significant load yet. I'm very curious to see how it will perform under load. I think its design actually makes it more efficient when there aren't transactions, because nothing is added to the blockchain (actually termed block lattice here, but using blockchain generically to refer to any cryptocurrency's core data), unlike in the conventional / Bitcoin model where blocks are being generated whether or not there are transactions in them. Of course that doesn't matter much when there are tons of transactions, as on Bitcoin currently, but, for instance, in Nyancoin, we accumulate tons of empty blocks all the time, where Raiblocks would just wait for more transactions. However, again, under load perhaps it could start growing "too quickly" by some metric, or eventually reach the point where it starts losing users because of the requirements of running a full node.
I think it will be very interesting to see how this turns out in practice.
Community
The coin is relatively young but even for a young coin it's not a huge community. But there is clear discussion and interest both on BCT and on their Google Group. It looks like a healthy start to me.
Footnotes
[1] https://bitcointalk.org/index.php?topic=1208830.0 - Initial announcement, didn't get much attention apparently. Also, this thread mentions a built-in block-explorer with a rich list. I don't have a working client to access this at the moment but that's pretty cool.
[2] There are 2128 total units, and a rai is 1024 total units, so total supply should be about 3.4 x 1014. https://github.com/clemahieu/raiblocks/wiki/Distribution-and-Mining Distribution has been going since about November 2015, so I would expect about one-third of the initial 50% to be distributed. The block explorer seems pretty primitive; it just takes a hash. No overall stats. So I'll use that one-third of the initial 50% estimate. So about 5.7 x 1013. Note by comparison that the faucet gives 108 coins at a time currently.
Actually, this comment puts the amount of rai in circulation as 4,763,023...that can't be right, that many Mrai I think? Yeah, 1030 stated as divider there. So 4.8 x 1012 rai in current circulation.
[3] https://groups.google.com/forum/#!topic/raiblocks/PSbX_onjLfU - This topic discusses it a bit. Also comments from meor in this thread
However, I have also paid 100 NYAN for 100 Mrai. This is basically a test transaction, but 1 NYAN for 1 Mrai (106 rai) would imply a marketcap of 4.8 million NYAN, or about 0.34 BTC in current circulation. I had initially thought this was higher before recalculating with the actual amount circulating as per [2]; may also have screwed up the math initially or here.
[4] https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - whitepaper ; each transaction could be thought of as its own block if I am grokking this right. It goes through as fast as the network can handle it. There is no fixed interval or period.
[5] I believe https://raiblocks.net/#/block-explorer is the only block explorer so far and it only supports entering a hash, so I don't have a way to determine the transactions in the last 24 hours.
[6] https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - The protocol is designed without a limit if I understand correctly.
[7] https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - The protocol is designed without transaction fees or block rewards.
[8] As per [5], the block explorer does not support this. There area couple addresses known to be the initial generation which will go into the faucet, but beyond that I don't know the distribution. There's supposed to be a rich list available in the built-in explorer, but I was unable to get a client running on my out-of-date systems (32-bit Windows (64-bit Windows client only), and CentOS 6 (glibc too old)).
[9] In general all full nodes are maintaining their own copies of all the information, but as I understand it the dispute resolution is based on voting by ownership of rai.
[10] All rai will be distributed through https://raiblocks.net/#/start as per https://github.com/clemahieu/raiblocks/wiki/Distribution-and-Mining
[11] There's been some discussion on BCT as well as on the google group: https://groups.google.com/forum/#!forum/raiblocks ; there's a new subreddit /raiblocks, but it's still set on private for some reason at the time of writing this footnote (just wrote a comment to meor noting this).
Further reading
https://raiblocks.net - Main site
https://github.com/clemahieu/raiblocks - Repo with documentation on the github wiki.
https://docs.google.com/document/d/13s6BKzRq9oD5Me55JBRzR7BdvjJ44QKqPu2lf-JsAlU/edit - whitepaper
https://groups.google.com/forum/#!topic/raiblocks - Google group
https://bitcointalk.org/index.php?topic=1219264.0 - Block lattice discussion
Disclosure, disclaimer
Disclosure: I have made an agreement to purchase 100 Mrai and have paid 100 NYAN for this. I have no other financial interest in Raiblocks currently, but I do intend to get a client ultimately (my current OSes are incompatible from being too old (one is 32-bit Windows; other CentOS 6 with too old glibc)) and get free coins from the faucet and play with this more.
Disclaimer: This writing is intended for edutainmental purposes only. Any accurate information conveyed is purely incidental. No warranty of fitness for any fit purposes is implied. This column known to the State of California to cause cancer. Cave canum. Carpe carp. Caveat lector.
Up next:
Tell me what coin to write about next by sponsoring an article! A sponsored article would likely have more discussion than I did here, and less than my Coin-a-Year report on Nyancoin.
Edit: /RaiBlocks is now public! New subreddit, but hopefully it'll build up a bit over time. :-)
Edit 2: Added more than the stub discussion discussion section I'd initially done.
submitted by coinaday to CryptoCurrency [link] [comments]

Bitcoin node as my first Linux server, it's up!

Got a new desktop. Instead of throwing out my old one, I bought some ECC memory and set it up near the router as a hypervisor. We use them at work and I thought it'd be nice to have my own, but we use Windows more a lot exclusively, and I felt like it's high time I learn how to Linux.
And here's how it went!
su -c 'install -m 0755 -o root -g root -t /uslocal/bin bitcoin-0.10.0/bin/*'
So I guess this means I can use SPV wallets and point them to use my full node to get best of both worlds, right? Either way, this was fun and I learned a lot. I'll be monitoring network utilization to see if I need to throttle it, (I'm on metered internet), but for now, the configuration file is basically just my RPC user and password. I guess that means connections aren't limited?
Just felt like sharing.
submitted by _Dave to Bitcoin [link] [comments]

[Table] IamA splat, editor/moderator/reviewer on overclockers.com and sysadmin at a cancer research organization. AMA!

Verified? (This bot cannot verify AMAs just yet)
Date: 2013-08-13
Link to submission (Has self-text)
Questions Answers
This just got cross posted to /sysadmin ; as a fellow research-field oriented sysadmin it gets worse... I too started in the Quake/HL/CS/TF timeframe, but got my degree in CompSci. Have you ever dealt with mice (the mammal kind; I've got worse stories)? Certs: just got my RHCSA this year. I've got the RHCE scheduled for october, and I'm studying for the CCNA, though I use HP switches.
How do you backup desktops / servers? Backups: Luckily, I don't do desktop support. We have another IT group that does that, I'm completely independent from them and I only have to take care of servers (and my own desktop). The physical servers are backed up to tape with Bacula. Our virtual servers are backed up with Veeam. My own desktop is backed up to my NAS share using synctoy (yes, i use windows on my desktop).
How much disk space do you have in one server? One off systems: As in physical servers built by hand? 0. I'm pretty much a Fujitsu shop with a few Dells. I definitely don't have time to be piecing servers together. disk space: only a few TB per server. I think the better answer would be that we have an Isilon X200 cluster that is 140 TB.
one off systems: As in physical servers built by hand? More as in unique software; such as this computer runs the HPLC. I guess in that case I only manage a handful of physical servers and a few VMs that are made for running one special piece of software or analyze data from one piece of scientific equipment. We have many other scientific devices that are attached to PCs that are "community" devices, but I don't have to manage them. and we've got a microscopy group that is separate from me too, with their own machines and devices.
If you are moving to 1gbs are you looking to increase the MTU? I was working on that but had some issues with firewalls for my windows-putty users. First, just to clarify, we're going to 10G from the 1G we have right now. I'm not our main network guy, so I'm not entirely sure but I doubt we'll change the MTU simply because we don't have a remote site so the majority of our traffic is regular internet traffic.
As for our backend network, I do use jumbo frames on a couple VLANs for our storage.
That most important question for any sysadmin...vi or emacs? Vi improved.
Anand Shimpi and Dustin Sklavos had an interesting podcast on the merits of Haswell on the desktop. In short, Dustin echos the enthusiast community's frustration with overclocking headroom decreases from Sandy Bridge Ivy Bridge Haswell. It seems like IPC has gone up but maximum frequency has gone down so the ratio seems almost 1:1. Then there is the issue of the use of TIM and IHS glue cap that caused some to delid their CPUs (and void their warranties). Question 1: What are your thoughts on the overclocking headroom decreases that we've seen? Question 2: Is Intel doing enough to cater to the enthusiast community? Question 3: How do you feel about the delay in the release of Enthusiast parts by Intel (Sandy Bridge-E & Ivy Bridge-E) versus mainstream parts (Sandy, Ivy, and Haswell)? Intel makes good chips and they do keep pushing technology forward, but they will never do overclockers any favors. They will always be doing whatever they can to make money. AMD will also do the same thing. Intel seems to think enthusiast solely means "deep pockets". At the same time, there always seems to be a lot of "the sky is falling" reporting done by many tech journalists. Intel hasn't completely forgotten about overclockers and I don't think they ever will completely let that group disappear. And really, what incentive does Intel have to completely lock out overclockers? Sure, deny us our warranty, we'll go ahead and buy another chip and give you more money. How could you deny that as a company? as for overclocking headroom decreases, one can only hope that means we've got a whole new architecture coming out soon, something like the transition from Pentium 4 to Core.
Do you have a home lab setup to learn/test on? If so, what does it consist of? At home I've got a 1u dell poweredge sitting in a closet which is my main server. I run bageez.us off it which was supposed to be my way of giving back to the community, by running a Linux torrent site. Other than that I've got two htpcs running Debian, a desktop windows machine for gaming/reviewing hardware, and a file server with 8 tb running Debian and KVM with a few Debian VMS.
Do you still have that site going? I tried your link but it didn't work. Looks like I let the SSL cert expire. I'll fix that tomorrow. It works on my end but I think I want to recode a few things and possibly get it to work with other trackers. Right now the torrents will only work with my local tracker.
Need to monitor that ;D. Yeah it's one of those things where I seem to be the only one visiting the site, so why stress about it. I also set up owncloud, but again, i'm the only one that uses it. :(
Do you get to keep the hardware you review? - Do you prefer the black theme or the white theme? Most of the time, yes.
Black. I don't mind the white theme that much tho. edit: he's asking about the forum default skin at overclockers.com/forums
What is your #1 piece of advise for any linux sysadmin? That's a tough one. Do you mean someone looking to become a sysadmin or one that is already a sysadmin?
I guess I didn't specify that did I? I ask the question because I've been doing mostly Windows sysadmin duties for about 2 years and some linux admin stuff. I'm falling in love with Linux and I would love to have a job dedicated to just *nix What advise/suggestions would you give someone that is wanting to make the transition? I think what really got me the best knowledge was forcing myself to use a "less polished" distro as my main rig for a few years. Once you are forced to learn, you'll learn quickly. Picking up an rhcsa book will help too even if you don't plan on taking the exam. Go through it and do the exercises. Install a distro, set it up, then format and do it all over. You can use virtual box for the same result without killing your main rig.
Do you still use FreeBSD? If so, what exactly do you use it for now? No, but I wish I did. I stopped using it because the GPU support in Linux was better on my desktop, and now I work mostly with CentOS, and it would be a lot of work to change 100ish servers over to FreeBSD.
What did you use to train yourself in everything? Just break and fix? Pretty much just the experience of using it daily on my desktop for years. Running gentoo and Slackware really gets you used to doing things for yourself.
Configuration management of choice for those 18 servers? I'm just a jack of all trades sysadmin with a strong focus on problem solving. Are you trying to cure cancer with those 18 nodes or mining bitcoins? I started playing around with puppet but haven't really gotten the hang of it. Right now the cluster is running ROCKS with Grid Engine, and I just use the rocks commands to provision/wipe nodes.
What's the hardest part about getting started with puppet? I think its mostly just finding the time to sit down and have enough time to emerse myself in it.
700+ centos nodes across a few clusters here and I'm loving ansible. Nice. I've heard that ROCKS becomes a bear at scale, but for now it's pretty simple and quick. My plan is to keep adding another 18 nodes every year (one full blade cluster) every year, as long as I can get funding, so I'm keeping my eyes open for other solutions for provisioning. Bright cluster manager is another one I have on my radar.
Computer didn't work for 5 months (it started then after i downloaded skyrim from steam it shut off, then finally worked last month). Put my new graphics card in, then problems ensued. Here: Link to www.reddit.com. 1st step i'd do is remove all nonessential parts from the computer. Leave the cpu and 1 stick of ram. Pull out the graphics card, don't connect any hard drives or cd drives. On the back, connect the monitor to the on board video card and connect the keyboard. Does it power on? Do you get any error messages other than it saying there is no OS? Then power down and connect things one by one until you figure out what part is causing the problem. If you think it's the drivers, you can boot into safe mode (i hope windows 8 still has that, press f8 while booting), then run Driver Sweeper, to remove the graphics drivers. I haven't tried this on windows 8 so i'm not sure if it will run or not. I don't think you need to do a full format and reinstall.
I'll try this tomorrow after work for sure. Do you reddit enough that i could contact you for more advice for help if i run into anything else? (i did contact nvidia team for help, they just told me to delete old drivers without any other help then those words). I don't blame you if you don't want to say you are able to help me with this situation. Humans be humans. Was there a specific reason to go into a cancer research lab? Or was it just a job that came around? No I don't go into photoshopbattles. I pretty much just do what I need for websites and that's it.
How do you like your baked potatoes? (please get into specific detail). It just happened to be the job I found but I love the environment. Much different than a corporate job.
I'm not a fan of baked potatoes but I do love curly fries if that counts for something.
You should really join us in the BAPC IRC channel. I do hang out in the unofficial Overclockers.com irc channel quite a bit. I'll try to drop by.
Do you do any sort of automation for firmware updates? Firmware automation? Nope, and I don't think I'd ever want such a thing. I've been looking at puppet as a way to automatically update software though.
I saw below you guys have some Dell servers, what models and do you use their Lifecycle Controller? We have a couple r610 servers and an equallogic storage box. I haven't heard of this life cycle controller.
What are the specs of your personal rig? Intel i7 3770k @ 4ghz.
Zalman CNPS9900LED cooler.
Patriot ddr3 2x2gb @ 800mhz cas7 (rated for 1200mhz cas9 but I can't boot at that speed anymore for some reason)
MSI Z77A-G41.
ATI Radeon HD 6870.
OCZ Revodrive X2.
How come you have a 3770k but only 4GB of RAM and a 6870? Seems a little overpowered in the CPU category. For benchmarking, mainly. The 3770k was our standard platform for reviews when I bought it. The rest is leftovers from various reviews. We don't get paid, so basically we work for hardware when we write reviews, more or less.
Wait when you review hardware you get stuff? Yes, hardware vendors provide review samples.
Have you ever had an OEM send you equipment different from the consumer version? (Say a factory overclocked version) and claiming it was the standard. Nope. Even if they did, we'd certainly review it as the hardware is, not as they intended it to be.
What's the worst PC loadout you've ever seen? PC load letter? What the f does that mean?
[email protected] JK, doesn't work well on a cluster unfortunately. Unless you have any perls of wisdom on how to make it work on a cluster? Well, it would work just as it does on any other group of computers. I'd have to run one client on each computer and they'd all check back to get their own workloads, so it would really take out the "cluster" usage and turn them just into regular blade servers.
How old are you? Young 30s.
Have you gone to college and completed a bachelor's degree, if not, do you regret it? Yes, BS in Mechanical Engineering.
How did you prove yourself to be worthy of that initial Jr. Sys. Admin job? I listed everything I could think of that I've done that was computesysadmin related. I had administered several web servers over the years, and experimented with many different distributions as my daily driver on my main desktop, so I was very comfortable on the command line and with day to day tasks. I was asked a few 'test' questions on the interview but I think they were more to gauge exactly what i did and didn't have experience with, not so much to make or break me.
Lastly, congrats on doing what you love for a living. Cheers to your future. And thanks. i definitely wake up in the morning with a different attitude than i used to, and that makes a big difference.
Configuration Management / Vagrant / Clouds. I have start playing with configuration management, but haven't gotten anything in production yet. I only provision new VMs every once in a while, and once the computer nodes are up they are pretty stable.
What is your scripting language of choice? I use straight up bash for most things, and python for some. I'm trying to learn more python.
How do you feel about some distros moving away from init.d and going to systemd? I like init.d because it's what I know. Systemd is just a different way of doing things, I'm sure I'll like it once I learn it.
As a OCF Member I have to ask, What is the most extreme cooling you have dealt with?(LN2, Phase Change, Water, D-Ice, etc.) LN2, at the benching party in philly last year. We definitely need to get one of those on schedule again. Also, my work has LN2 and D-ice sitting around but I haven't asked if it's ok for me to play with those yet. One day, i'll ask, and it will be awesome if they say yes. fingers crossed.
So, can I have some of your left over gear? Joking, heh heh... Seriously though, got any gear that's collecting dust? Mostly by the time we're ready to part with gear, it's not worth much and is terribly outdated. Or, it's been burned up by pushing too many volts.
What do you do with the old gear? Do you scrap up a functional computer and donate it to a charity, or just proper e-waste recycling? If it's not on my computer or benching station, it's in my closet. And my wife doesn't like the amount of computer stuff in my closet, so I'm sure I'll start looking for some way to recycle stuff soon.
Where does a young grasshopper starts to learn all of these materials wise one? Well, you could get yourself a RHCSA prep book (linked to the one i have and found useful) and go through all of the exercises. The way I learned was basically to set up my own servers, either physical or virtual, at home, and run them. I think FreeBSD, Gentoo, and Slackware were the most beneficial to me in that they don't really make choices for you, so you have to configure things for yourself which forces you to read the documentation and learn. They all have excellent documentation, btw. If you want to go a step further, linux from scratch will really teach you about the operating system from the ground up.
From there, come up with little projects for yourself. Like making a home NAS, setup NFS and Samba shares, install XBMC on a HTPC and hook it up to your tv to stream movies and music. Setup a webserver and owncloud. Stuff like that.
Sorry I'm late but... how old were you when you first starting tinkering with Linux and such? I'd like to be a sysadmin or similar when I finish school so I figured you were the right person to ask. I was 19 when I first made that half life/counterstrike server. I didn't even know what ssh was and it took a good amount of explaining for me to finally understand. The freebsd documentation is amazing and will walk you through just about everything step by step. To get NAT configured I had to use another how to but setting up that server taught me a ton.
Are you an Nvidia or an AMD guy? It's changed several times over the years. I used to be solely Nvidia because of Linux, but AMD has been stepping up their game and getting their drivers usable, so I currently run all AMD.
How much of a PITA is it for you to be HIPAA compliant? It's not really that tough. Luckily there's only a couple projects going on right now that have special needs above and beyond regular security needs.
What do you use for storage? We have a few Jetstor SANs, a couple Promise RAID boxes, and an Equallogic box as our VMWare backend. But our main mass storage is Isilon X200.
Whoops my bad, meant 1.18 not 1.8 it'd be gone if it was 1.8. sorry. I am using a hyper 212 EVO in the standard push configuration. Well 1.18 is too low for 4.4ghz.
Only 4gigs of ram in your rig ? Yeah...I've got 16 in my work PC for running VMs, and 16 in my VM host at home too. I'll probably buy more soon.
Oh ok, what V would I go to? I was able to initially get 4.4 with 1.18 and 0 whea errors, what V would you recommend? This is my first oc btw. Bump it up one step at a time until you are stable. Be methodical about it. You can check out what values other people are getting on hwbot.org.
Ok Ill do that, thanks man, at what V if the errors dont go away should I stop advancing them? Most likely you will want to stay around 1.6v. I'm not very familiar with that chip specifically so I'd check hwbot to see what other people have posted and go by that. Obviously remember that not all chips are the same, so you can't expect to get exactly what other people get.
1.6, that seems a bit high for my 212 EVO, a few days ago I did have it at 1.18 without any WHEA 20 errors. That's why I'm saying take it slow, one step at a time.
What do you think of this quote by Richard J. Schwartz? "The impact of nanotechnology is expected to exceed the impact the electronics revolution has had on our lives." Sounds good to me. I can't wait to see what comes next.
Actually nodes, or are some of them VMs? Physical blade servers as nodes. with 144 GB ram each.
Zfsonlinux in use? No I haven't used zfs at all.
Hey... You're pretty cool. Thanks. You're not too bad yourself.
The answer should be ''i wish i could say the same to you'' I'm not like that.
Just how big is your hpc. Only 18 nodes :/ but its more what I do with it...
How'd you get your nickname. Back when I played CS in the dorm freshman year of college, I used to get killed all the time. So I started calling myself "jack splat", as a play on the nursery rhyme (jack sprat), then shortened it to 'splat' on most of the websites I signed up for.
Describe a SHTF moment at your work place. I can imagine it must be highly stressful being the sole responsible person to keep all that gear running. I definitely have a few and luckily they aren't that bad. One of my first few months, I decided to connect this wireless ap to the network to test it out one morning. As I was being awesome managing the cable to make it look clean, one of the security guards came into the server room and said they had no internet. I looked at our switches and they were all lit up solid. By hooking up the ap, which had spanning tree turned on, I took down the network of the entire building.
Ouch...that's definitely a SHTF moment. glad you came out unscathed. Luckily, all I had to do was unplug it and everything went back to normal. I then set up a spare switch at my desk and played with it before figuring out that STP needed to be disabled on the AP. Now it's been running for over a year without incident.
Would you rather fight 100 duck sized horses or 1 horse sized duck? I'd go for the horse sized duck. Seems like more of a challenge.
U mad? Nah, I'm feeling pretty good today.
Last updated: 2013-08-18 07:16 UTC
This post was generated by a robot! Send all complaints to epsy.
submitted by tabledresser to tabled [link] [comments]

Os benefícios de um Full Node de Bitcoin Setting Up A BitCoin Full Node Using Rokos Image On A ... Brian Lockhart on Running a Bitcoin Full Node Installing A Bitcoin Core Full Node - Cryptocurrencies and ... What is a Bitcoin Full Node? Why would I want one? - YouTube

CentOS 7 server; Root access; Steps to setup A full litecoin node in centOS 7. We will install the latest version of Litecoin from the official website. First log into your CentOS 7 server with root access and navigate to home directory using the command – cd ~ or any download directory. For bitcoin investors, a full node will serve two purposes. First it will help them monitor the health of bitcoin’s blockchain: The blockchain has a direct bearing on bitcoin’s price since it ... The following instructions show you how to configure, compile, and install Bitcoin 0.9.4 on CentOS 7. Update Your Operating System Packages The first step is to always make sure your operating system and all of it's packages are up-to-date. Bitcoin Core is a full Bitcoin client and builds the backbone of the network. It offers high levels of security, privacy, and stability. However, it has fewer features and it takes a lot of space and memory. Features: Bech32 × Bech32: Bech32 is a special address format made possible by SegWit (see the feature description for SegWit for more info). This address format is also known as 'bc1 ... It’s fairly simple to run a full bitcoin node on CentOS 7, if you want to compile one from source. Alternatively, you can run the bitcoind daemon in a Docker container too. These steps will get your server ready to compile Bitcoin from source. Prepare your build environment to compile Bitcoin Core . The next steps will install a compiler and all development libraries needed to compile ...

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