apache2报错：Config variable ${APACHE_RUN_DIR} is not defined

xeonds

2022.11.22 19:18:26

报错信息：

[Sat Jan 21 21:01:16.273933 2017] [core:warn] [pid 3248] AH00111: Config variable ${APACHE_RUN_DIR} is not defined
apache2: Syntax error on line 80 of /etc/apache2/apache2.conf: DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot

原因：升级后没有导入环境变量envvars文件，手动导入即可：

. /etc/apache2/envvars
# 或者下面这条也行
source  /etc/apache2/envvars