Centos7增加熵池大小

[root@tomcat ~]# cp /usr/lib/systemd/system/rngd.service /etc/systemd/system

[root@tomcat ~]# vim /etc/systemd/system/rngd.service

[Service]

ExecStart=/sbin/rngd -f -r /dev/urandom

[root@tomcat ~]# systemctl daemon-reload

[root@tomcat ~]# systemctl restart rngd

[root@tomcat ~]# cat /proc/sys/kernel/random/entropy_avail

2979