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Postgresqlに接続できない時の対処法

Last updated at Posted at 2020-02-12

##開発環境

  • ubuntu(WSL)
  • Postgresql

##解決策
サーバを起動させるために下記のコマンドを実行します。

sudo /etc/init.d/postgresql start

##エラー内容
rails sしたら、以下のようになった。

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

pg_lsclustersで現状確認。
やっぱり、downしてる。

10  main    5432 down   postgres /var/lib/postgresql/10/main /var/log/postgresql/postgresql-10-main.log

下記のコマンドでクラスターを起動させる。
pg_ctlcluster 10 main start

install: cannot change owner and permissions of ‘/var/run/postgresql’: No such file or directory
Error: Could not create /var/run/postgresql/10-main.pg_stat_tmp: No such file or directory

サーバが起動していないことが原因だあるらしいので、下記のコマンドを実行させる。

sudo /etc/init.d/postgresql start

これで動きました。

##参考文献

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