$releasever被系统识别为空

报错关键信息:rhel-%24releasever-x86_64

# 创建系统变量
echo 7.6 > /etc/yum/vars/releasever
# 版本号和 /etc/redhat-release 内的保持一致

来源于: https://access.redhat.com/discussions/1520823?tour=8

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