获取错误："connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?“尝试在centos上使用postgresql创建用户时
获取错误："connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?“尝试在centos上使用postgresql创建用户时
提问于 2012-01-23 00:23:49
完全错误：
Creating 'pcore' PostgreSQL user... 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"?
Connecting to PostgreSQL as 'pcore'...
** Error occurred during execution: FATAL: Ident authentication failed for user "pcore"postgresql：
psql -U postgres template1
psql (8.4.9)
Type "help" for help.
template1=# \l
List of databases
Name | Owner | Encoding | Collation | Ctype | Access privileges
-----------+----------+----------+-------------+-------------+-----------------------
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres
: postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres
: postgres=CTc/postgres
(3 rows)linux：
lsb_release -a
LSB Version: :core-4.0-ia32:core-4.0-noarch:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-ia32:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS release 5.7 (Final)
Release: 5.7
Codename: Final另外：
ps -ef | grep post
user 25055 25032 0 11:13 pts/1 00:00:00 grep post
postgres 32104 1 0 Jan20 ? 00:00:00 /usr/bin/postmaster -p 5432 -D /var/lib/pgsql/data/etc/passwd中没有用户pcore这会是问题所在吗，postgresql期望linux用户和postgresql用户之间一对一的匹配？
发生此错误时，我正在尝试创建用户：
# Database imports
import pgdb as psql
# This will create the 'pcore' user using `su` to run the
# command as the postgres system user
def createPsqlPcoreUser(new_pass):
print "Creating 'pcore' PostgreSQL user...",
sys.stdout.flush()
cmd_list = ['su', '-', 'postgres', '-c','psql --host=%s -c '\
'"CREATE USER pcore WITH PASSWORD \'%s\' CREATEDB"' % \
(PSQL_SOCKET_PATH, new_pass)]
p1 = subprocess.Popen(cmd_list,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
p1.wait()
print p1.communicate()[0]此外：
sudo -u postgres createuser pcore -P
Enter password for new role:
Enter it again:
Shall the new role be a superuser? (y/n) y
createuser: could not connect to database postgres: 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"?
[root@localhost pcore]# service postgresql status
postmaster (pid 28901 28900 28899 28898 28896 28894) is running...
[root@localhost pcore]# ps -ef | grep post
postgres 28894 1 0 00:21 ? 00:00:00 /usr/bin/postmaster -p 5432 -D /var/lib/pgsql/data
postgres 28896 28894 0 00:21 ? 00:00:00 postgres: logger process
postgres 28898 28894 0 00:21 ? 00:00:00 postgres: writer process
postgres 28899 28894 0 00:21 ? 00:00:00 postgres: wal writer process
postgres 28900 28894 0 00:21 ? 00:00:00 postgres: autovacuum launcher process
postgres 28901 28894 0 00:21 ? 00:00:00 postgres: stats collector process 回答 1
Stack Overflow用户
发布于 2013-03-25 12:15:04
令人着迷的错误。看起来您的用户能够正确地连接到套接字，但是postgres用户不能。我觉得这很奇怪。我的猜测是postgres用户的个人资料有问题。
我建议从printenv作为普通用户和postgres用户开始，并对它们进行比较。特别要注意PGPORT和PGHOST变量，因为它们可以确定套接字的位置。这是第一个开始的地方。
其次，您可以检查套接字目录的postgresql.conf，并将PGHOST设置为绝对目录路径。这可能会解决您的问题，但您系统上的用户帐户级别出现了一些问题。
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原文链接：
https://stackoverflow.com/questions/8962563
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