docker在CentOS7下配置other_args参数未生效

现在环境如下---------------
myhost  私有库，安装了docker registry v2  映射到端口 5000
host1  docker客户机，安装有docker
---------------
我现在编辑 host1 的/etc/sysconfig/docker

/etc/sysconfig/docker

# /etc/sysconfig/docker
#
# Other arguments to pass to the docker daemon process
# These will be parsed by the sysv initscript and appended
# to the arguments list passed to docker -d

other_args="--insecure-registry myhost:5000"

然后执行
# systemctl start docker

然后我用 host1 去搜索私有库时就报错了：

[root@docker05 bin]# docker search myhost:5000/xxx
Error response from daemon: invalid registry endpoint https://myhost:5000/v0/: unable to ping registry endpoint https://myhost:5000/v0/
v2 ping attempt failed with error: Get https://myhost:5000/v2/: tls: oversized record received with length 20527
 v1 ping attempt failed with error: Get https://myhost:5000/v1/_ping: tls: oversized record received with length 20527. If this private registry supports only HTTP or HTTPS with an unknown CA certificate, please add `--insecure-registry myhost:5000` to the daemon's arguments. In the case of HTTPS, if you have access to the registry's CA certificate, no need for the flag; simply place the CA certificate at /etc/docker/certs.d/myhost:5000/ca.crt

但是，我在host1用docker -d --insecure-registry myhost:5000 去跑，然后新建另外一个会话去search它又不报这个错了。
所以目前推断就是docker在CentOS7上设置other_args参数并未生效。


另外，还有一个问题。docker的润星日志在哪里看的？容器的日志我知道。但docker的运行日志我找不到在哪里。/var/log/docker也不存在。