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Nitin Gurbani
Nitin Gurbani

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Mar 13, 2019

Getting rid of systemd-resolved consuming port 53

There are cases in which you need to use port 53, like to usednsmasq, dns server etc. which is used by systemd-resolved. to get rid of systemd-resolved safely stop systemd-resolved “ sudo systemctl stop systemd-resolved” edit /etc/systemd/resolved.conf with these

DNS

1 min read

Getting rid of systemd-resolved consuming port 53
Getting rid of systemd-resolved consuming port 53
DNS

1 min read


May 28, 2017

Setting up truffle dev environment

Start geth with rinkeby chain Download Rinkeby json https://www.rinkeby.io/rinkeby.json Initialise datadir geth — datadir=$HOME/.rinkeby init rinkeby.json connect node to rinkeby network and start geth --networkid=4 --datadir=$HOME/.rinkeby --cache=1024 --syncmode=full --bootnodes=enode://a24ac7c5484ef4ed0c5eb2d36620ba4e4aa13b8c84684e1b4aab0cebea2ae45cb4d375b77eab56516d34bfbd3c1a833fc51296ff084b770b94fb9028c4d25ccf@52.169.42.101:30303

Ethereum

1 min read

Setting up truffle dev environment
Setting up truffle dev environment
Ethereum

1 min read


Jan 27, 2017

Self signed certificate in macOS Sierra

To add self signed certificates in macOS Sierra for testing, you need to create root CA certificate signed with SHA256 openssl req -x509 -nodes -sha256 -days 365 -newkey rsa:2048 -keyout localhost.key -out localhost.cert and add it to System keychain using sudo security add-trusted-cert -d -r trustAsRoot -k /Library/Keychains/System.keychain

Ssl

1 min read

Ssl

1 min read


Dec 20, 2016

Running bitcoin full node, btcd ( full node bitcoin implementation in Golang )

btcd is an alternative full node bitcoin implementation Running docker container of btcd Install Docker, you can follow docker installation guide from here https://docs.docker.com/engine/installation/ Pull docker btcd image docker pull niktrix/btcd-docker create directory to mount to docker container where btcd will download all blocks data, assure you have enough disk space mkdir /btcroot run btcd image as daemon docker run -d -p 8333:8333 -v /root:/btcdroot — name=”btcd-node” niktrix/btcd-docker

Docker

1 min read

Docker

1 min read


Dec 20, 2016

What is bitcoin full node

Bitcoin mining is different than running bitcoin fullnode, there is no incentive involved in running bitcoin full node 2. in layman term you can think bitcoin full node is like seeding your torrent. 3. As seeding in torrent helps to maintain health of file in torrent, running full node helps in bitcoin network health. 4. Bitcoin Full node downloads all blocks and it verifies all blocks hash to its previous block,

Bitcoin

1 min read

Bitcoin

1 min read


Dec 19, 2016

Blockchain, where to start from

Blockchain is underlying technology used in cryptocurrencies, before you start reading about blockchain there are some prerequisite to read, distributed computing consensus algorithms hashing functions byzantine fault tolerance peer to peer network state machines Distributed blocks Merkle Tree

Blockchain

1 min read

Blockchain

1 min read

Nitin Gurbani

Nitin Gurbani

54 Followers

Argumentative. Opinionated. Always right. . Drinker. love Fun, knowledge greedy .

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