centos 7中安装virtio-rng？

Question

在centos7上运行某个命令的时候，出现下面一段提示：

2018-07-20 15:00:05 INFO: This system doesn't provide enough entropy to quickly generate high-quality random numbers.
Installing the rng-utils/rng-tools, jitterentropy or haveged packages may help.
On virtualized Linux environments, also consider using virtio-rng.
The service will not start until enough entropy has been collected.

就是提示安装下面四个工具：

rng-tools
jitterentropy
haveged packages
virtio-rng

通过yum install可以安装rng-tools，但是下面三个jitterentropy,haveged packages,virtio-rng就不知道怎么安装了，百度也没什么结果。

问题：
怎么安装jitterentropy,haveged packages,virtio-rng？

Answer 1

你也是编译安装的？
他是说系统不能提供足够的熵去生成高质量的随机数
安装rng-tools后，执行一下就好了
rngd -r /dev/urandom