闲置旧电脑改建家庭服务器

家里有台多年前购买的Mac Mini,late 2012版本。2年前升级内存到8G,换了个250G的SSD。可随着mac OS的不断升级使用起来又觉得卡卡的了。

这台Mac Mini闲置着有些可惜,考虑一段时间后决定把它改成一台家庭文件服务器。要说Mac Mini的优点,它体积小,能耗低,安静还有4个USB3.0的接口。很适合做成一台普通家庭使用的文件媒体服务器。

下面是我个人选择的系统和服务。大多是成熟稳定的解决方案,有些甚至已经过时了(e.g. Ajenti)。实用为主,看重简洁。

OS

既然使用Mac Mini做服务器,原先的Mac OS就不是那么合适了。我不需要图形化的界面,而是要留出更多的资源给后台服务。我选择的是Ubuntu Server 18.04 lts,其实FreeBSD也是不错的选择,在freebsd上装个freenas再加几个插件就能解决大部分需求了。在Mac mini上安装Ubuntu,我参考了Ubuntu的这个官方教程 https://tutorials.ubuntu.com/tutorial/tutorial-create-a-usb-stick-on-macos?_ga=2.195015789.1792654335.1532519820-2102205841.1532519820#0
我没考虑过MacOS和Linux的双启动,就是个简单的Ubuntu服务器。

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修复WSUS 3.0 的 Self-Update is Not Working 问题

我的WSUS 3.0服务器近期不能接收client端的连接。Application log中发现如下信息。

Event Type: Error
Event Source: Windows Server Update Services
Event Category: Clients
Event ID: 13042
User: N/A
Computer: WSUS01
Description: Self-update is not working.

经过研究,下面的方法可以解决问题。

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Setting Mailbox Limits over 2GB

 

Setting mailbox limits over 2GB in Exchange 2003

Exchange Server 2000/2003 allows the Exchange Administrator to set limits on the mailboxes of users in the Exchange Organization (read Setting Mailbox Limits, Working with Store Policies and Overwriting Setting limits on the mailboxes help control the database size and plan for efficient backup, restore and maintenance tasks.

However, in most scenarios, there will always be users that think that they deserve more storage space than they were given in the first place. Some of these are VIPs, others just need it for their work, and the rest are simply trying to make their life easier.

So, whatever may be the reason, you might find yourself in need to configure higher mailbox limits for some users.

Well, up to this point all I did was to explain what you already know. However, there is one tricky bit:

When trying to configure mailbox limits higher than 2097151 KB the Exchange System Manager (ESM) or Active Directory Users and Computers (ADUC) snap-ins will not allow you to enter these higher limits.

You will receive an error saying: “The value for ‘Issue warning at (KB)’ is not valid. Specify a value from 0 through 2097151”.

The mailbox limits are actually Active Directory attributes. If you set a sample user’s mailbox limits and look at the user object with a tool such as LDP or Adsiedit.msc you will notice that they are:

  • Issue Warning = MDBStorageQuota
  • Prohibit Send = MDBOverQuotaLimit
  • Prohibit Send and Receive = MDBOverHardQuotaLimit

These limits are part of the UI, and NOT a hard coded limit on the attribute itself.

Solution

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Change Ubuntu Server from DHCP to a Static IP Address

Change Ubuntu Server from DHCP to a Static IP Address

If the Ubuntu Server installer has set your server to use DHCP, you will want to change it to a static IP address so that people can actually use it.

Changing this setting without a GUI will require some text editing, but that’s classic linux, right?

Let’s open up the /etc/network/interfaces file. I’m going to use vi, but you can choose a different editor

sudo vi /etc/network/interfaces

For the primary interface, which is usually eth0, you will see these lines:

auto eth0
iface eth0 inet dhcp

As you can see, it’s using DHCP right now. We are going to change dhcp to static, and then there are a number of options that should be added below it. Obviously you’d customize this to your network.

auto eth0
iface eth0 inet static
        address 192.168.1.200
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1

Now we’ll need to add in the DNS settings by editing the resolv.conf file:

sudo vi /etc/resolv.conf

On the line ‘name server xxx.xxx.xxx.xxx’ replace the x with the IP of your name server. (You can do ifconfig /all to find out what they are)

Now we’ll just need to restart the networking components:

sudo /etc/init.d/networking restart

Ping www.google.com. If you get a response, name resolution is working(unless of course if google is in your hosts file).

Really pretty simple.