最近有同事反馈在登录服务器时候遇到报错
-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF8)
/bin/sh: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF8)
-bash: warning: setlocale: LC_CTYPE: cannot change locale (en_US.UTF-8): No such file or directory
-bash: warning: setlocale: LC_COLLATE: cannot change locale (en_US.UTF-8): No such file or directory根据报错字面提示应该是找不到字符集，尝试按照网上的办法去修复缺失的字符集。
localedef -v -i en_US -f UTF-8 en_US.UTF-8
但是执行后，又遇到以下报错。
[root@server ~]# localedef -v -i en_US -f UTF-8 en_US.UTF-8
/usr/share/i18n/locales/en_US:7: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:8: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:9: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:11: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:14: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:15: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:16: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:17: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:19: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:20: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:21: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:22: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:23: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:24: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:25: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:26: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:27: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:28: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:29: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:34: non-symbolic character value should not be used
/usr/share/i18n/locales/en_GB:50: non-symbolic character value should not be used
/usr/share/i18n/locales/i18n:1425: non-symbolic character value should not be used
/usr/share/i18n/locales/i18n:1674: non-symbolic character value should not be used
/usr/share/i18n/locales/i18n:1719: non-symbolic character value should not be used
/usr/share/i18n/locales/i18n:1756: non-symbolic character value should not be used
/usr/share/i18n/locales/en_GB:53: non-symbolic character value should not be used
/usr/share/i18n/locales/en_GB:59: non-symbolic character value should not be used
/usr/share/i18n/locales/en_GB:152: non-symbolic character value should not be used
/usr/share/i18n/locales/en_US:40: non-symbolic character value should not be used
/usr/share/i18n/locales/iso14651_t1:3: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:10: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:11: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:12: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:13: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:14: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:15: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:16: non-symbolic character value should not be used
/usr/share/i18n/locales/translit_neutral:17: non-symbolic character value should not be used
LC_NAME: field `name_gen' not defined
LC_IDENTIFICATION: field `audience' not defined
LC_IDENTIFICATION: field `application' not defined
LC_IDENTIFICATION: field `abbreviation' not defined
LC_IDENTIFICATION: no identification for category `LC_MEASUREMENT'
LC_CTYPE: table for class "upper": 1756 bytes
LC_CTYPE: table for class "lower": 1756 bytes
LC_CTYPE: table for class "alpha": 4320 bytes
LC_CTYPE: table for class "digit": 600 bytes
LC_CTYPE: table for class "xdigit": 600 bytes
LC_CTYPE: table for class "space": 856 bytes
LC_CTYPE: table for class "print": 5976 bytes
LC_CTYPE: table for class "graph": 5976 bytes
LC_CTYPE: table for class "blank": 856 bytes
LC_CTYPE: table for class "cntrl": 664 bytes
LC_CTYPE: table for class "punct": 4824 bytes
LC_CTYPE: table for class "alnum": 4320 bytes
LC_CTYPE: table for class "combining": 3152 bytes
LC_CTYPE: table for class "combining_level3": 2832 bytes
LC_CTYPE: table for map "toupper": 16924 bytes
LC_CTYPE: table for map "tolower": 15388 bytes
LC_CTYPE: table for map "totitle": 16924 bytes
LC_CTYPE: table for width: 26712 bytes
cannot create temporary file: No such file or directory到这里又陷入了另外一个问题了。
在翻查资料时候，发现可能跟glibc有关系，glibc跟系统的locale库的兼容出问题，导致执行localedef命令时候出错。于是尝试重装glibc解决问题。
[root@server ~]# yum reinstall -y glibc-common执行结果没有报错，但是重新执行localedef -v -i en_US -f UTF-8 en_US.UTF-8结果一样，依然是提示报错。通过yum安装无法解决问题那就试试编译安装。
# 查看当前glibc版本
[root@server ~]# strings /lib64/libc.so.6 |grep GLIBC_
# 前往https://ftp.gnu.org/gnu/glibc/下载相同版本。我这里是2.18
wget https://ftp.gnu.org/gnu/glibc/glibc-2.18.tar.gz
# 解压源码包并进入解压文件夹
tar zxf glibc-2.18.tar.gz && cd glibc-2.18
# 选择en_US字符集
egrep '^SUPPORTED-LOCALES|^en_US' localedata/SUPPORTED > tmp && cat tmp > localedata/SUPPORTED
# 创建build文件夹
mkdir build && cd build
# 配置编译目录
../configure --prefix=/usr
# 开始执行编译
make -j$(nproc)
make install
# 我在make install时候遇到了报错，但是重新执行localedef -v -i en_US -f UTF-8 en_US.UTF-8时候已经可以正常生成字符集了。
# 如果可以正常make installa的话，建议再追加执行一步 make localedata/install-locales