对不起,我很平庸。
我有一个带有Ubuntu 14.04.5 LTS(GNU / Linux 2.6.32-042stab127.2 x86_64)的VPS,还安装了Postgresql。我在Rails应用程序的ruby中使用Postgresql。突然我的应用程序停止工作并抛出错误
无法连接到服务器:没有这样的文件或目录是服务器 在本地运行并接受Unix域套接字上的连接 “ /var/run/postgresql/.s.PGSQL.5432”?
$psql -V
psql (PostgreSQL) 11.0 (Ubuntu 11.0-1.pgdg14.04+2)
$pg_config --version
PostgreSQL 11.0 (Ubuntu 11.0-1.pgdg14.04+2)
$postgres -V
The program 'postgres' is currently not installed. You can install it by typing:
apt-get install postgres-xc
$locate bin/postgres
/usr/lib/postgresql/11/bin/postgres
/usr/lib/postgresql/9.3/bin/postgres
/usr/lib/postgresql/9.4/bin/postgres
/usr/lib/postgresql/9.5/bin/postgres
$/usr/lib/postgresql/11/bin/postgres -V
postgres (PostgreSQL) 11.0 (Ubuntu 11.0-1.pgdg14.04+2)
$pg_lsclusters
9.3 main 5432 down postgres /var/lib/postgresql/9.3/main /var/log/postgresql/postgresql-9.3-main.log
11 main 5433 down postgres /var/lib/postgresql/11/main /var/log/postgresql/postgresql-11-main.log
postgres状态为关闭
$service postgresql status
9.3/main (port 5432): down
11/main (port 5433): down
$systemctl status postgresql.service
postgresql.service
Loaded: error (Reason: No such file or directory)
Active: inactive (dead)
我正在尝试使用以下方式启动Postgresql
$sudo systemctl start postgresql
Failed to issue method call: Unit postgresql.service failed to load: No
such file or directory. See system logs and 'systemctl status
postgresql.service' for details.
$/etc/init.d# /etc/init.d/postgresql start
* Starting PostgreSQL 11 database server
* Failed to issue method call: Unit postgresql@11-main.service failed to
load: No such file or directory. See system logs and 'systemctl status
postgresql@11-main.service' for details.
[fail]
* Starting PostgreSQL 9.3 database server
* Failed to issue method call: Unit postgresql@9.3-main.service failed to
load: No such file or directory. See system logs and 'systemctl status
postgresql@9.3-main.service' for details.
[fail]
我无法启动PostgreSQL。我不明白为什么它突然崩溃了,直到昨天它工作正常。非常感谢您的帮助。预先感谢。