percona-xtrabackup-24報錯Public key for percona-xtrabackup-24-2.4.5-1.el7.x86_64.rpm is not installed

需要提前安裝相應的percona-release版本，如：percona-release-latest.noarch.rpm，會在/etc/pki/rpm-gpg/下生成文件PERCONA-PACKAGING-KEY，保存KEY，然後yum install percona-xtrabackup-24即可，如果No package percona-xtrabackup-24 available.，則

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