帶有 Postgres 的無人機 - psql：無法連接到服務器：沒有這樣的文件或目錄

Question

我嘗試使用 postgres 插件設置無人機服務器，但我完全無法讓它工作。

我所做的是從文檔中復制默認的無人機設置：

---
  kind: pipeline
  type: docker
  name: default

  steps:
    - name: test
      image: postgres:9-alpine
      commands:
        - sleep 5 #give the service some time to start
        - psql -U postgres -d test

  services:
    - name: database
      image: postgres:9-alpine
      environment:
        POSTGRES_USER: postgres
        POSTGRES_PASSWORD: password
        POSTGRES_DB: test

但是在嘗試啟動它時出現以下錯誤

psql: 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"?

我的猜測是 postgres 由於某種原因沒有啟動，但很難說。

這是 Postgres 日志：

The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale "en_US.utf8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

Data page checksums are disabled.

fixing permissions on existing directory /var/lib/postgresql/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default timezone ... UTC
selecting dynamic shared memory implementation ... posix
creating configuration files ... ok
running bootstrap script ... ok
sh: locale: not found
performing post-bootstrap initialization ... No usable system locales were found.
Use the option "--debug" to see details.
ok
syncing data to disk ... ok

WARNING: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the option -A, or
--auth-local and --auth-host, the next time you run initdb.

Success. You can now start the database server using:

    pg_ctl -D /var/lib/postgresql/data -l logfile start

waiting for server to start....LOG:  database system was shut down at 2020-05-27 08:49:09 UTC
LOG:  MultiXact member wraparound protections are now enabled
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started
 done
server started
CREATE DATABASE


/usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*

LOG:  received fast shutdown request
LOG:  aborting any active transactions
LOG:  autovacuum launcher shutting down
LOG:  shutting down
waiting for server to shut down....LOG:  database system is shut down
 done
server stopped

PostgreSQL init process complete; ready for start up.

LOG:  database system was shut down at 2020-05-27 08:49:11 UTC
LOG:  MultiXact member wraparound protections are now enabled
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started

無論是那個還是 Postgres 都可以正常啟動，但是在其他進程有機會進行通信之前，某些東西會殺死它。 不過我不完全確定。

任何幫助，將不勝感激。

Answer 1

Drone 在自己的容器中提供服務，這些服務具有自己的主機名。
在您的情況下，您命名了您的服務database ，因此在與psql連接時，您需要傳遞主機名，以便psql通過 TCP 建立與容器的連接：

psql -U postgres -d test -h database