{"Entry":{"collection":"conn","key":"krbsrvname","name":"krbsrvname","aliases":["PGKRBSRVNAME","krbsrvname"],"metadata":{"aliases":["PGKRBSRVNAME","krbsrvname"],"category":"GSSAPI and Kerberos","content_hash":"23f902a445282d88b69279afcfc40dcdf0dae86699934da9febee0b5454a6828","derived_content_hash":"5b5a7208e91df3fcecac1746b390040367c1a9bab4622d9d890e22fa76733434","documentation_refresh":{"batch":"20261113","original_source_rev":"","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"imported_at":"2026-09-30T00:40:34.959626+08:00","name":"krbsrvname","name_zh":"","slug":"krbsrvname","summary":"Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES )."}},"Definition":{"Collection":"conn","Key":"krbsrvname","SourceDatabase":"center","Version":"18","SourceTable":"connection_parameter","SourceKey":"krbsrvname","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","Facts":{"comparison_data":{"compiled_default_expression":"PG_KRB_SRVNAM","default_evidence":["Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES )."],"definition":"Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES ).","documented":true,"environment":"PGKRBSRVNAME","keyword":"krbsrvname"},"comparison_hash":"c124ac232ede2844368c1d3f88b67796dc9a0a4beb214b593d6e37289acd501e","default_evidence":["Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES )."],"description":["Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES )."],"description_zh":"使用 GSSAPI 认证时所用的 Kerberos 服务名。这必须与服务器配置中指定的 Kerberos 认证服务名称匹配，才能成功进行认证。（另请参见 第 20.6 节 。）默认值通常为 postgres ，但在构建 PostgreSQL 时，可以通过 configure 的 --with-krb-srvnam 选项更改。在大多数环境中，通常不需要更改此参数。一些 Kerberos 实现可能需要不同的服务名称，例如 Microsoft Active Directory 需要服务名称为大写（ POSTGRES ）。","description_zh_html":"\u003cp\u003e连接参数 krbsrvname。\u003c/p\u003e\u003ch3\u003e同版本中文手册定义\u003c/h3\u003e\u003cdd\u003e\u003cp\u003e\n        使用 GSSAPI 认证时所用的 Kerberos 服务名。这必须与服务器配置中指定的 Kerberos 认证服务名称匹配，才能成功进行认证。（另请参见\u003ca class=\"xref\" href=\"/zh/docs/18/gssapi-auth.html\"\u003e第 20.6 节\u003c/a\u003e。）默认值通常为 \u003ccode class=\"literal\"\u003epostgres\u003c/code\u003e，但在构建 \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e 时，可以通过 \u003cspan class=\"application\"\u003econfigure\u003c/span\u003e 的 \u003ccode class=\"option\"\u003e--with-krb-srvnam\u003c/code\u003e 选项更改。在大多数环境中，通常不需要更改此参数。一些 Kerberos 实现可能需要不同的服务名称，例如 Microsoft Active Directory 需要服务名称为大写（\u003ccode class=\"literal\"\u003ePOSTGRES\u003c/code\u003e）。\n       \u003c/p\u003e\u003c/dd\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/libpq-connect.html#LIBPQ-CONNECT-KRBSRVNAME\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e","documented":true,"environment":[{"description":"PGKRBSRVNAME behaves the same as the krbsrvname connection parameter.","name":"PGKRBSRVNAME","source_url":"/docs/18/libpq-envars.html"}],"facts":[{"label":"Client library","value":"libpq 18.6"},{"label":"Manual definition","value":"Documented"},{"label":"Source environment fallback","value":"PGKRBSRVNAME"},{"label":"Compiled fallback expression","value":"PG_KRB_SRVNAM"}],"facts_zh":[{"label":"客户端库","value":"libpq 18.6"},{"label":"手册定义","value":"手册已记载"},{"label":"源码中的环境变量回退","value":"PGKRBSRVNAME"},{"label":"编译时回退表达式","value":"PG_KRB_SRVNAM"}],"keyword":"krbsrvname","manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"LIBPQ-CONNECT-KRBSRVNAME\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003ekrbsrvname\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eKerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also \u003ca class=\"xref\" href=\"/docs/18/gssapi-auth.html\" title=\"20.6. GSSAPI Authentication\"\u003eSection 20.6\u003c/a\u003e.) The default value is normally \u003ccode class=\"literal\"\u003epostgres\u003c/code\u003e, but that can be changed when building \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e via the \u003ccode class=\"option\"\u003e--with-krb-srvnam\u003c/code\u003e option of \u003cspan class=\"application\"\u003econfigure\u003c/span\u003e. In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case (\u003ccode class=\"literal\"\u003ePOSTGRES\u003c/code\u003e).\u003c/p\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","manual_path":"libpq-connect.html#LIBPQ-CONNECT-KRBSRVNAME","precedence_evidence":["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example.","Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .","Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."],"related":[{"label":"Connection service file","url":"/docs/18/libpq-pgservice.html"},{"label":"Password file","url":"/docs/18/libpq-pgpass.html"},{"label":"All libpq environment variables","url":"/docs/18/libpq-envars.html"}],"release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.6","major":"18","manifest":{"index":"index.html","major":"18","pages":1148,"pdf":{"A4":{"built_at":"2026-09-26","bytes":15865106,"pages":3154,"sha256":"19512c405da53f9f7fcf0abba359223aa65f021be025bf3411381918f92e3190","url":"/files/documentation/pdf/18/postgresql-18-A4.pdf"},"US":{"built_at":"2026-09-26","bytes":15748059,"pages":3328,"sha256":"facbe6c229e598b872d3d98bef53308f46e06746006fa4590de9a7de9dd46319","url":"/files/documentation/pdf/18/postgresql-18-US.pdf"}},"release":"18.6","source_mode":"en SGML built with pinned official archive","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","svg_assets":3,"tree":"18"},"ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[{"paragraphs":["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example.","Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .","Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."],"title":"Default resolution and service-file precedence"},{"paragraphs":["PGKRBSRVNAME behaves the same as the krbsrvname connection parameter."],"title":"Environment variable evidence"}],"sections_zh":[{"paragraphs":["以下环境变量可用于选择连接参数的默认值，供 PQconnectdb 、 PQsetdbLogin 和 PQsetdb 在调用代码未直接指定参数值时使用。例如，这样可以避免在简单的客户端应用程序中硬编码数据库连接信息。","服务名称可以在每个用户的服务文件或系统范围的文件中定义。如果同一个服务名称存在于用户文件和系统文件中，则用户文件优先。默认情况下，每个用户的服务文件名为 ~/.pg_service.conf 。在Microsoft Windows上，它的名称为 %APPDATA%\\postgresql\\.pg_service.conf （其中 %APPDATA% 指用户配置文件夹中的应用数据子目录）。可以通过设置环境变量 PGSERVICEFILE 来指定不同的文件名。系统范围的文件名为 pg_service.conf 。默认情况下，在 PostgreSQL 安装的 etc 目录中寻找（使用 pg_config --sysconfdir 来准确识别此目录）。可以通过设置环境变量 PGSYSCONFDIR 来指定另一个目录，但不能指定不同的文件名。","从服务文件中获取的连接参数会与其他来源的参数合并。服务文件中的设置会覆盖相应的环境变量，而连接字符串中直接给出的值又会覆盖服务文件中的设置。例如，使用上述服务文件时，连接字符串 service=mydb port=5434 将使用主机 somehost 、端口 5434 、用户 admin ，以及由环境变量或内置默认值设置的其他参数。"],"title":"默认值解析与服务文件优先级"},{"paragraphs":["PGKRBSRVNAME 的行为与 krbsrvname 连接参数相同。"],"title":"环境变量证据"}],"signature":"krbsrvname","source_option":{"compiled_default_expression":"PG_KRB_SRVNAM","declaration":"\"krbsrvname\", \"PGKRBSRVNAME\", PG_KRB_SRVNAM, NULL, \"Kerberos-service-name\", \"\", 20, offsetof(struct pg_conn, krbsrvname)","environment":"PGKRBSRVNAME","keyword":"krbsrvname","source_notes":[]},"sources":[{"anchor":"LIBPQ-CONNECT-KRBSRVNAME","file":"libpq-connect.html","label":"18.6 English manual · libpq-connect.html","sha256":"c26a7fc3dcda6066cfe540641ae2690faf3d3c03277f30b4dfc2328ab45c212f","url":"/docs/18/libpq-connect.html#LIBPQ-CONNECT-KRBSRVNAME"},{"archive_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","file":"src/interfaces/libpq/fe-connect.c","label":"18.6 libpq connection option declarations","sha256":"44a6e386cbfd67ebe768d6ef5493098119c2e6b4796239d53e5ed7b122b206a5","url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2"},{"anchor":"","file":"libpq-envars.html","label":"18.6 English manual · libpq-envars.html","sha256":"d64db73f3d48127bb984a5f775e77b7bcca2ba4bd218333cf24a45fcdd7c4363","url":"/docs/18/libpq-envars.html"},{"anchor":"","file":"libpq-pgservice.html","label":"18.6 English manual · libpq-pgservice.html","sha256":"6035a3f0ee1d0fd80db5bf58834390b884eecd23206659bdf6f07560deea5aa7","url":"/docs/18/libpq-pgservice.html"}],"tables":[{"columns":[{"key":"name","label":"Variable"},{"key":"description","label":"Documented behavior"}],"key":"environment","rows":[{"description":"PGKRBSRVNAME behaves the same as the krbsrvname connection parameter.","name":{"text":"PGKRBSRVNAME","url":"/docs/18/libpq-envars.html"}}],"title":"Environment fallback"}],"tables_zh":[{"columns":[{"key":"name","label":"变量"},{"key":"description","label":"手册记载的行为"}],"key":"environment","rows":[{"description":"PGKRBSRVNAME 的行为与 krbsrvname 连接参数相同。","name":{"text":"PGKRBSRVNAME","url":"/docs/18/libpq-envars.html"}}],"title":"环境变量回退"}],"zh_from":{"authored_translation":"source-derived-identity","body_sha256":"bf8b0a2694e59ce801b1ff74a1c8ec909b72b07fdd89367c49b8e93f992be2bb","kind":"same-version-chinese-manual-with-source-derived-identity","manual":{"anchor":"LIBPQ-CONNECT-KRBSRVNAME","build_id":107,"extraction":"exact-definition","fragment_sha256":"76e74252e16c315b9821be6dfa62e55326aeeb4b8c073c95282536efc3b14ccd","locale":"zh-Hans","page_key":"libpq-connect.html","source_hash":"1555b03a2bc480920a9c72be9683ee3ddf99e8a5c17267c0dca73c42cd50e44c","source_revision":"unknown:rendered-translation-baseline","translated_from_revision":null,"translation_revision":"git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b","url":"/zh/docs/18/libpq-connect.html#LIBPQ-CONNECT-KRBSRVNAME","version":"18"},"runtime_rerun":false,"source_facts_revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8"}},"ManualEvidence":{"manual_path":"libpq-connect.html#LIBPQ-CONNECT-KRBSRVNAME","release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.6","major":"18","manifest":{"index":"index.html","major":"18","pages":1148,"pdf":{"A4":{"built_at":"2026-09-26","bytes":15865106,"pages":3154,"sha256":"19512c405da53f9f7fcf0abba359223aa65f021be025bf3411381918f92e3190","url":"/files/documentation/pdf/18/postgresql-18-A4.pdf"},"US":{"built_at":"2026-09-26","bytes":15748059,"pages":3328,"sha256":"facbe6c229e598b872d3d98bef53308f46e06746006fa4590de9a7de9dd46319","url":"/files/documentation/pdf/18/postgresql-18-US.pdf"}},"release":"18.6","source_mode":"en SGML built with pinned official archive","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","svg_assets":3,"tree":"18"},"ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"anchor":"LIBPQ-CONNECT-KRBSRVNAME","file":"libpq-connect.html","label":"18.6 English manual · libpq-connect.html","sha256":"c26a7fc3dcda6066cfe540641ae2690faf3d3c03277f30b4dfc2328ab45c212f","url":"/docs/18/libpq-connect.html#LIBPQ-CONNECT-KRBSRVNAME"},{"archive_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","file":"src/interfaces/libpq/fe-connect.c","label":"18.6 libpq connection option declarations","sha256":"44a6e386cbfd67ebe768d6ef5493098119c2e6b4796239d53e5ed7b122b206a5","url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2"},{"anchor":"","file":"libpq-envars.html","label":"18.6 English manual · libpq-envars.html","sha256":"d64db73f3d48127bb984a5f775e77b7bcca2ba4bd218333cf24a45fcdd7c4363","url":"/docs/18/libpq-envars.html"},{"anchor":"","file":"libpq-pgservice.html","label":"18.6 English manual · libpq-pgservice.html","sha256":"6035a3f0ee1d0fd80db5bf58834390b884eecd23206659bdf6f07560deea5aa7","url":"/docs/18/libpq-pgservice.html"}]},"MeasuredEvidence":{}},"Text":{"Collection":"conn","Key":"krbsrvname","SourceDatabase":"center","Version":"18","Locale":"en","Title":"krbsrvname","Summary":"Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES ).","BodyHTML":"\u003cdiv\u003e\u003cdl\u003e\u003cdt id=\"LIBPQ-CONNECT-KRBSRVNAME\"\u003e\u003cspan\u003e\u003ccode\u003ekrbsrvname\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eKerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also \u003ca href=\"/docs/18/gssapi-auth.html\" rel=\"nofollow\"\u003eSection 20.6\u003c/a\u003e.) The default value is normally \u003ccode\u003epostgres\u003c/code\u003e, but that can be changed when building \u003cspan\u003ePostgreSQL\u003c/span\u003e via the \u003ccode\u003e--with-krb-srvnam\u003c/code\u003e option of \u003cspan\u003econfigure\u003c/span\u003e. In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case (\u003ccode\u003ePOSTGRES\u003c/code\u003e).\u003c/p\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","ContentHash":"2d4612d27d8e1a8c21823ebc92f6ecd55179270430784f600851782888fd2e79","Payload":{"description":["Kerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also Section 20.6 .) The default value is normally postgres , but that can be changed when building PostgreSQL via the --with-krb-srvnam option of configure . In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case ( POSTGRES )."],"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"LIBPQ-CONNECT-KRBSRVNAME\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003ekrbsrvname\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eKerberos service name to use when authenticating with GSSAPI. This must match the service name specified in the server configuration for Kerberos authentication to succeed. (See also \u003ca class=\"xref\" href=\"/docs/18/gssapi-auth.html\" title=\"20.6. GSSAPI Authentication\"\u003eSection 20.6\u003c/a\u003e.) The default value is normally \u003ccode class=\"literal\"\u003epostgres\u003c/code\u003e, but that can be changed when building \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e via the \u003ccode class=\"option\"\u003e--with-krb-srvnam\u003c/code\u003e option of \u003cspan class=\"application\"\u003econfigure\u003c/span\u003e. In most environments, this parameter never needs to be changed. Some Kerberos implementations might require a different service name, such as Microsoft Active Directory which requires the service name to be in upper case (\u003ccode class=\"literal\"\u003ePOSTGRES\u003c/code\u003e).\u003c/p\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","related":[{"label":"Connection service file","url":"/docs/18/libpq-pgservice.html"},{"label":"Password file","url":"/docs/18/libpq-pgpass.html"},{"label":"All libpq environment variables","url":"/docs/18/libpq-envars.html"}],"sections":[{"paragraphs":["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example.","Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .","Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."],"title":"Default resolution and service-file precedence"},{"paragraphs":["PGKRBSRVNAME behaves the same as the krbsrvname connection parameter."],"title":"Environment variable evidence"}],"tables":[{"columns":[{"key":"name","label":"Variable"},{"key":"description","label":"Documented behavior"}],"key":"environment","rows":[{"description":"PGKRBSRVNAME behaves the same as the krbsrvname connection parameter.","name":{"text":"PGKRBSRVNAME","url":"/docs/18/libpq-envars.html"}}],"title":"Environment fallback"}]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}