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ERROR PG::ConnectionBad: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

とりあえずpostgresのアンインストール、インストール

$ brew uninstall postgres
$ brew install postgres
$ postgres -V

http://tdall12.hatenablog.com/entry/2018/01/05/221657
この記事にしたがってやってたのでpg_ctlをインストール

$ brew install postgis

データベースへの接続

$ psql -d template1 

postgresに接続

$ pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

成功!!!

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