我是 Linux 新手，我有一台安装了 Cloud Linux 的服务器。
我想做的是安装 tcpdump，但是我不能。
我尝试从 SSH 执行以下命令：
yum install tcpdump
但我收到以下消息：
Loaded plugins: fastestmirror, rhnplugin
Profilename: myserver.host.ext
Not licensed
There was an error communicating with CLN.
CLN support will be disabled.
Error Message:
Service not enabled for system profile: "myserver.host.ext"
Error Class Code: 31
Error Class Info:
This system does not have a valid entitlement for Red Hat Network.
Please visit https://cln.cloudlinux.com/rhn/systems/SystemEntitlements.do
or login at https://cln.cloudlinux.com, and from the "Overview" tab,
select "Subscription Management" to enable RHN service for this system.
Explanation:
Your organization does not have enough Management entitlements to register this
system to CloudLinux Network. Please notify your organization administrator of this error.
You should be able to register this system after your organization frees existing
or purchases additional entitlements. Additional entitlements may be purchased by your
organization administrator by logging into CloudLinux Network and visiting
the 'Subscription Management' page in the 'Your RHN' section of RHN.
A common cause of this error code is due to having mistakenly setup an
Activation Key which is set as the universal default. If an activation key is set
on the account as a universal default, you can disable this key and retry to avoid
requiring a Management entitlement.
Loading mirror speeds from cached hostfile
cr | 2.9 kB 00:00
Setting up Install Process
No package tcpdump available.
Error: Nothing to do
那么，有没有办法在云 Linux 上安装 tcpdump？以及如何安装？
亲切的问候 ！
答案1
您的 Cloud Linux 服务器似乎尚未注册。您可能需要先注册它，然后才能使用 yum 安装数据包。查看此文档，了解如何注册您的 Cloud Linux 服务器http://docs.cloudlinux.com/registering_cloudlinux_server.html