我在尝试使用postgresql 11时遇到了Rails5.2.3的这个问题。
FATAL: Peer authentication failed for user "postgres"
我一直在检查1和2
他们讨论了pg_hba.conf以及如何将方法更改为md5或trust。在我的硬盘里，没有这样的文件。这些档案可以在/var/lib/postgresql/11/中找到：
base pg_dynshmem pg_notify pg_snapshots pg_subtrans PG_VERSION postgresql.auto.conf
global pg_logical pg_replslot pg_stat pg_tblspc pg_wal postmaster.opts
pg_commit_ts pg_multixact pg_serial pg_stat_tmp pg_twophase pg_xact postmaster.pid
如果我试图找到该文件，它将显示在此处：
$locate pg_hba.conf
/home/linuxbrew/.linuxbrew/var/postgres/pg_hba.conf
如果我进去，方法信任已经被使用。
我已经卸载了postgresql并再次卸载了它。
这是我的database.yml文件：
# PostgreSQL. Versions 9.1 and up are supported.
#
# Install the pg driver:
# gem install pg
# On OS X with Homebrew:
# gem install pg -- --with-pg-config=/usr/local/bin/pg_config
# On OS X with MacPorts:
# gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config
# On Windows:
# gem install pg
# Choose the win32 build.
# Install PostgreSQL and put its /bin directory on your path.
#
# Configure Using Gemfile
# gem 'pg'
#
default: &default
adapter: postgresql
encoding: unicode
# For details on connection pooling, see Rails configuration guide
# http://guides.rubyonrails.org/configuring.html#database-pooling
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
development:
<<: *default
database: postgres
username: postgres
#host: localhost
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
# The specified database role being used to connect to postgres.
# To create additional roles in postgres see `$ createuser --help`.
# When left blank, postgres will use the default role. This is
# the same name as the operating system user that initialized the database.
# The password associated with the postgres role (username).
# Connect on a TCP socket. Omitted by default since the client uses a
# domain socket that doesn't need configuration. Windows does not have
# domain sockets, so uncomment these lines.
#host: localhost
# The TCP port the server listens on. Defaults to 5432.
# If your server runs on a different port number, change accordingly.
# port: 5432
# Schema search path. The server defaults to $user,public
#schema_search_path: myapp,sharedapp,public
# Minimum log levels, in increasing order:
# debug5, debug4, debug3, debug2, debug1,
# log, notice, warning, error, fatal, and panic
# Defaults to warning.
#min_messages: notice
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
<<: *default
database: postgres
username: postgres
host: localhost
pool: 5
# As with config/secrets.yml, you never want to store sensitive information,
# like your database password, in your source code. If your source code is
# ever seen by anyone, they now have access to your database.
#
# Instead, provide the password as a unix environment variable when you boot
# the app. Read http://guides.rubyonrails.org/configuring.html#configuring-a-database
# for a full rundown on how to provide these environment variables in a
# production deployment.
#
# On Heroku and other platform providers, you may have a full connection URL
# available as an environment variable. For example:
#
# DATABASE_URL="postgres://myuser:mypass@localhost/somedatabase"
#
# You can use this database configuration with:
#
# production:
# url: <%= ENV['DATABASE_URL'] %>
#
production:
<<: *default
database: postgres
username: postgres
如果我把线移走
username: postgres
我明白了
FATAL: role "root" does not exist
最佳答案
我昨天遇到过这个问题。试试这个。。。
这应该可以
default: &default
adapter: postgresql
pool: 5
host: localhost
development:
<<: *default
database: prj_development
username: pg_username
password: pg_password
我唯一注意到的区别是
host键host: localhost
为了确保我只是注释了键
host并复制了以下错误PG：：ConnectionBad:致命：用户“postgres”的对等身份验证失败
关于ruby-on-rails - 遇到致命威胁:用户“postgres”的对等身份验证失败，并且在Ruby上运行Ruby，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/57992582/