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

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  1. stop systemd-resolved “ sudo systemctl stop systemd-resolved”
  2. edit /etc/systemd/resolved.conf with these
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[Resolve]

3) sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

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And done !!


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Start geth with rinkeby chain

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

4. start ethereum wallet

/Applications/Ethereum\ Wallet.app/Contents//MacOS/Ethereum\ Wallet — rpc $HOME/.rinkeby/geth.ipc

5. Install truffle

npm install -g truffle

6. Initialize truffle

truffle init

after initialising truffle write you contract code and deploy using truffle commands


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

About

Nitin Gurbani

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

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