最终更新:
我忘记了执行initdb命令.
</ FINAL UPDATE>
通过运行此命令
ps auxwww | grep postgres
我看到postgres没有运行
> ps auxwww | grep postgres
remcat 1789 0.0 0.0 2434892 480 s000 R+ 11:28PM 0:00.00 grep postgres
这提出了一个问题:如何启动postgresql服务器？
更新:
>pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
server starting
sh: /usr/local/var/postgres/server.log: No such file or directory
更新2:
触摸不成功所以我这样做了:
> mkdir /usr/local/var/postgres
> vi /usr/local/var/postgres/server.log
> ls /usr/local/var/postgres/
server.log
但是当我尝试启动rails服务器时,我仍然看到:
Is the server running on host "localhost" and accepting
TCP/IP connections on port 5432?
更新3:
> pg_ctl -D …在我做了brew更新和brew升级之后,我的postgres遇到了一些问题.我试图卸载postgres并重新安装,但它也没有用.
这是错误消息.(当我尝试执行rake db:migrate时,我也收到此错误消息)
$ psql
psql: 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"?
我该如何解决？
Mac版:山狮.
自制版:0.9.3
postgres版本:psql(PostgreSQL)9.2.1
这就是我所做的.
12:30 ~/D/works$ brew uninstall postgresql
Uninstalling /usr/local/Cellar/postgresql/9.2.1...
12:31 ~/D/works$ brew uninstall postgresql
Uninstalling /usr/local/Cellar/postgresql/9.1.4...
12:31 ~/D/works$ psql --version
bash: /usr/local/bin/psql: No such file or directory
12:33 ~/D/works$ brew install postgresql
==> Downloading http://ftp.postgresql.org/pub/source/v9.2.1/postgresql-9.2.1.tar.bz2
Already downloaded: /Library/Caches/Homebrew/postgresql-9.2.1.tar.bz2
......
......
==> Summary
/usr/local/Cellar/postgresql/9.2.1: 2814 files, 38M, built in …我设法让我的本地开发环境变得笨拙.
我所有的本地Rails应用程序现在都给出错误:
PGError
could not connect to server: Permission denied
Is the server running locally and accepting
connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?
我不知道是什么造成的.
在搜索解决方案时,我更新了所有捆绑的宝石,更新的系统宝石,更新的MacPorts.没有快乐.
其他人在从OSX Leopard升级到Lion时报告了这个问题,因为混淆应该使用哪个版本的Postgres(即OSX版本或MacPorts版本).我已经在Lion运行了几个月,所以现在这应该发生似乎很奇怪.
如果不先了解问题是什么,我就不愿意过多地捣乱.如何有条不紊地调试？
如何确定我的系统中有多少版本的PostgreSQL,正在访问哪一个版本以及它所在的位置？如果使用错误的PostgreSQL,我该如何解决这个问题？
抱歉没有问题.我还在学习它是如何工作的!谢谢你的任何指示.
编辑
一些更新基于以下建议和评论.
我试图运行pg_lsclusters哪个返回command not found错误.
然后我尝试本地化我的pg_hba.conf文件并找到这三个示例文件:
/opt/local/share/postgresql84/pg_hba.conf.sample
/opt/local/var/macports/software/postgresql84/8.4.7_0/opt/local/share/postgresql84/pg_hba.conf.sample
/usr/share/postgresql/pg_hba.conf.sample
所以我假设安装了3个版本的PSQL？Macports,OSX默认和???.
然后我搜索了ps -ef | grep postgres返回的launchctl启动脚本
0 56 1 0 11:41AM ?? 0:00.02 /opt/local/bin/daemondo --label=postgresql84-server --start-cmd /opt/local/etc/LaunchDaemons/org.macports.postgresql84-server/postgresql84-server.wrapper start ; --stop-cmd /opt/local/etc/LaunchDaemons/org.macports.postgresql84-server/postgresql84-server.wrapper stop ; --restart-cmd /opt/local/etc/LaunchDaemons/org.macports.postgresql84-server/postgresql84-server.wrapper restart ; --pid=none
500 372 1 0 11:42AM ?? 0:00.17 …更新到Yosemite 10.10后,我无法连接到我的postgresql数据库.我运行rails控制台并尝试获取第一个用户,但得到此错误...
> ? game_golf git:(master) ? rails c
> Loading development environment (Rails 4.1.4)
> [1] pry(main)> User.first
> PG::ConnectionBad: could not connect to server: Connection refused
> Is the server running on host "localhost" (::1) and accepting
> TCP/IP connections on port 5432?
> could not connect to server: Connection refused
> Is the server running on host "localhost" (127.0.0.1) and accepting
> TCP/IP connections on port 5432?
> from /Users/pauldornfeld/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/activerecord-4.1.4/lib/active_record/connection_adapters/postgresql_adapter.rb:888:in `initialize'
> [2] pry(main)>
我该怎么办!我试图重新安装postgresql,重新安装自制程序.请帮忙!
最近升级到OSX Mavericks已经破坏了我的Rails应用程序的数据库连接.
当我尝试从数据库中提取时,服务器返回以下错误:
PG::ConnectionBad (could not connect to server: Connection refused
Is the server running on host "localhost" (::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (fe80::1) and accepting
TCP/IP connections on port 5432?
当psql我试着跑步时,我得到:
psql: could not connect to server: No …我正在为django应用程序创建一个docker-compose配置,Dockerfile构建成功但是当我编写它们时,django会返回一个问题 - 无法连接到posgres.
我跑docker-compose run web bash,发现redis和posgres都无法连接.
我的docker-compose.yml文件:
db:
image: postgres:9.1
environment:
- POSTGRES_PASSWORD=mysecretpassword
redis:
image: redis:2.8
web:
links:
- db
- redis
build: .
volumes:
- .:/workspace
ports:
- "8000:8000“
command: python /workspace/BreadTripServer/webapps/manage.py runserver 0.0.0.0:8000 --settings=configs.local_default
我这样做的错误信息docker-compose up:
sudo docker-compose up
Recreating breadtrip_db_1...
Recreating breadtrip_redis_1...
Recreating breadtrip_web_1...
Attaching to breadtrip_redis_1, breadtrip_web_1
redis_1 | [1] 06 May 06:07:30.469 # Warning: no config file specified, using the default config. In order to specify a config file use …我正在尝试将应用程序从 Django 1.8 和 Python 2 迁移到 Python 3.6 和 Django 3.0。
每当我添加django.db.backends.postgresql_psycopg2，并通过 pip3 安装它时，我都会收到此错误：
_psycopg2 模块未找到。
我查看了文档，发现在 Django 3.0 中 _psycopg2 被删除了。我该如何解决这个问题？我以前的应用程序正在运行 psycopg 2.6.1。
postgresql ×6
macos ×4
django ×2
homebrew ×2
ruby ×2
database ×1
docker ×1
osx-yosemite ×1
python-3.x ×1