Question

我尝试启动rails服务器并提出以下问题：

neha@SCS-I82:~/work/code/$ rails s
=> Booting Puma
=> Rails 3.2.22 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/home/neha/.rvm/gems/ruby-2.2.2@canvas/gems/activerecord-3.2.22/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `initialize': FATAL:  no pg_hba.conf entry for host "[local]", user "postgres", database "dev2", SSL off (PG::ConnectionBad)

当我尝试启动postgresql服务时，它会出现以下错误：

neha@SCS-I82:~/work/code/$ sudo service postgresql start 
 * Starting PostgreSQL 9.3 database server                                                                                                      * Error: Port conflict: another instance is already running on /var/run/postgresql with port 5432
                                                                                                                                        [fail]

我的/etc/postgresql/9.3/main/pg_hba.conf文件如下：

# Database administrative login by Unix domain socket
local   all             postgres                                md5

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                peer
#host    replication     postgres        127.0.0.1/32            md5
#host    replication     postgres        ::1/128                 md5

还通过将端口5432上的正在运行的进程终止为：

来进行检查

neha@SCS-I82:~/work/code/lms(ac-99)$ sudo lsof -t -i:3000
neha@SCS-I82:~/work/code/lms(ac-99)$ sudo lsof -t -i:5432
9981
neha@SCS-I82:~/work/code/lms(ac-99)$ sudo kill -9 9981
neha@SCS-I82:~/work/code/lms(ac-99)$ sudo service postgresql start 
 * Starting PostgreSQL 9.3 database server                                                                                                      * Error: Port conflict: another instance is already running on /var/run/postgresql with port 5432

有人可以建议一些解决方案。

Answer 1

您的端口3000可能已经分配给另一台服务器要解决此问题，您可以尝试以下命令

$ lsof -i：3000

{{1}}

$ kill -9 12036

上面的命令在运行rails s之后终止PID

启动rails服务器时出现Postgres PG :: ConnectionBad错误

1 个答案: