解决 invalid value for parameter “lc_messages”: “zh_CN.UTF-8”
起因：修改了postgresql的系统配置的lc_messages等四个字符集由en_US.UTF-8改成了zh_CN.UTF-8",然后重新启动postgresql就报如下错误，通过定位问题出在liunx系统没有中文字符编码环境导致的。*
invalid value for parameter “lc_messages”: “zh_CN.UTF-8”
invalid value for parameter “lc_monetary”: “zh_CN.UTF-8”
invalid value for parameter “lc_numeric”: “zh_CN.UTF-8”
invalid value for parameter “lc_time”: “zh_CN.UTF-8”
启动postgresql错误日志如下
[root@centos temp]# systemctl status postgresql-12.service
● postgresql-12.service - PostgreSQL 12 database server
Loaded: loaded (/usr/lib/systemd/system/postgresql-12.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Fri 2023-03-24 17:04:15 CST; 3min 3s ago
Docs: https://www.postgresql.org/docs/12/static/
Process: 2396 ExecStart=/usr/pgsql-12/bin/postmaster -D ${PGDATA} (code=exited, status=1/FAILURE)
Process: 2258 ExecStartPre=/usr/pgsql-12/bin/postgresql-12-check-db-dir ${PGDATA} (code=exited, status=0/SUCCESS)
Main PID: 2396 (code=exited, status=1/FAILURE)
3月 24 17:04:15 systemd[1]: Starting PostgreSQL 12 database server...
2023-03-24 17:04:15.431 CST [2396] LOG: invalid value for parameter "lc_messages": "zh_CN.UTF-8"
2023-03-24 17:04:15.431 CST [2396] LOG: invalid value for parameter "lc_monetary": "zh_CN.UTF-8"
2023-03-24 17:04:15.432 CST [2396] LOG: invalid value for parameter "lc_numeric": "zh_CN.UTF-8"
2023-03-24 17:04:15.432 CST [2396] LOG: invalid value for parameter "lc_time": "zh_CN.UTF-8"
2023-03-24 17:04:15.432 CST [2396] FATAL: configuration file "/extdisk/database/postgresql/data/postgresql.conf" contains errors
3月 24 17:04:15 systemd[1]: postgresql-12.service: Main process exited, code=exited, status=1/FAILURE
3月 24 17:04:15 systemd[1]: postgresql-12.service: Failed with result 'exit-code'.
3月 24 17:04:15 systemd[1]: Failed to start PostgreSQL 12 database server.
1.查看当前编码
[root@centos ~]# locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
2.修改/etc/locale.conf配置
原配置： LANG="en_US.UTF-8"
修改为： LANG="zh_CN.UTF-8"
输入： source /etc/locale.conf
[root@centos ~]# source /etc/locale.conf
3.reboot重启后系统后，输入locale再次查看
如果没有下面No such file or directory报错信息就修改成功了，如果有报错信息则继续往下走
[root@centos temp]# reboot
[root@centos ~]# locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=zh_CN.UTF-8
LC_CTYPE="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_MONETARY="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_PAPER="zh_CN.UTF-8"
LC_NAME="zh_CN.UTF-8"
LC_ADDRESS="zh_CN.UTF-8"
LC_TELEPHONE="zh_CN.UTF-8"
LC_MEASUREMENT="zh_CN.UTF-8"
LC_IDENTIFICATION="zh_CN.UTF-8"
LC_ALL=
4.安装语言包
1.langpacks-zh_CN-1.0-12.el8.noarch.rpm
2.glibc-langpack-zh-2.28-164.el8.x86_64.rpm
3.glibc-locale-source-2.28-164.el8.x86_64.rpm
安装指令：rpm -ivh *.rpm --force --nodeps （nodeps的意思是忽视依赖关系。因为各个软件之间会有多多少少的联系。有了这两个设置选项就忽略了这些依赖关系，强制安装或者卸载 ）
[root@centos temp]# rpm -ivh glibc-langpack-zh-2.28-164.el8.x86_64.rpm --force --nodeps
warning: glibc-langpack-zh-2.28-164.el8.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY
Verifying... ################################# [100%]
Preparing... ################################# [100%]
Updating / installing...
1:glibc-langpack-zh-2.28-164.el8 ################################# [100%]
[root@centos temp]# rpm -ivh glibc-locale-source-2.28-164.el8.x86_64.rpm --force --nodeps
warning: glibc-locale-source-2.28-164.el8.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY
Verifying... ################################# [100%]
Preparing... ################################# [100%]
Updating / installing...
1:glibc-locale-source-2.28-164.el8 ################################# [100%]
[root@centos temp]# rpm -ivh langpacks-zh_CN-1.0-12.el8.noarch.rpm --force --nodeps
warning: langpacks-zh_CN-1.0-12.el8.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY
Verifying... ################################# [100%]
Preparing... ################################# [100%]
Updating / installing...
1:langpacks-zh_CN-1.0-12.el8 ################################# [100%]
5.reboot重启后系统后，输入locale再次查看
[root@centos temp]# reboot
[root@centos ~]# locale
LANG=zh_CN.UTF-8
LC_CTYPE="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_MONETARY="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_PAPER="zh_CN.UTF-8"
LC_NAME="zh_CN.UTF-8"
LC_ADDRESS="zh_CN.UTF-8"
LC_TELEPHONE="zh_CN.UTF-8"
LC_MEASUREMENT="zh_CN.UTF-8"
LC_IDENTIFICATION="zh_CN.UTF-8"
LC_ALL=
6.输入date查看是否为中文格式日期
[root@centos ~]# date
2023年 03月 24日 星期五 18:21:01 CST
7.重新启动pgsql成功！
[root@centos temp]# systemctl restart postgresql-12.service
[root@centos temp]#
[root@centos temp]#
[root@centos temp]#
[root@centos temp]# systemctl status postgresql-12.service
● postgresql-12.service - PostgreSQL 12 database server
Loaded: loaded (/usr/lib/systemd/system/postgresql-12.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2023-03-24 17:07:28 CST; 1min 26s ago
Docs: https://www.postgresql.org/docs/12/static/
Process: 5070 ExecStartPre=/usr/pgsql-12/bin/postgresql-12-check-db-dir ${
PGDATA} (code=exited, status=0/SUCCESS)
Main PID: 5077 (postmaster)
Tasks: 8 (limit: 78642)
Memory: 467.2M
CGroup: /system.slice/postgresql-12.service
├─5077 /usr/pgsql-12/bin/postmaster -D /extdisk/database/postgresql/data
├─5090 postgres: logger
├─5092 postgres: checkpointer
├─5093 postgres: background writer
├─5094 postgres: walwriter
├─5095 postgres: autovacuum launcher
├─5096 postgres: stats collector
└─5097 postgres: logical replication launcher
3月 24 17:07:26 systemd[1]: Starting PostgreSQL 12 database server...
3月 24 17:07:27 postmaster[5077]: 2023-03-24 17:07:27.473 CST [5077] 日志: 正在启动 PostgreSQL 12.5 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.3.1 20191121 (Red Hat 8.>
2023-03-24 17:07:27.474 CST [5077] 日志: 正在监听IPv4地址"0.0.0.0"，端口 5432
2023-03-24 17:07:27.474 CST [5077] 日志: 正在监听IPv6地址"::"，端口 5432
2023-03-24 17:07:27.474 CST [5077] 日志: 在Unix套接字 "/var/run/postgresql/.s.PGSQL.5432"上侦听
2023-03-24 17:07:27.474 CST [5077] 日志: 在Unix套接字 "/tmp/.s.PGSQL.5432"上侦听
2023-03-24 17:07:28.422 CST [5077] 日志: 日志输出重定向到日志收集进程
2023-03-24 17:07:28.422 CST [5077] 提示: 后续的日志输出将出现在目录 "log"中.