Backup

来自naiyue同学：

冗余不做,日子甭过; 备份不做,十恶不赦

UPDATE 2006/05/01。主任说，这个签名是他想出来的。

一直想做的一件事：跨越三网的MX和NS互备，我认为基本上可以应付个人网站任何常见规模的网络间断和服务器宕机导致的潜在丢信问题。

(此文档属于备忘录性质，作者不对此备忘录的正确性、条理性、实用性、适用性承担任何责任。
版权所有 (c) 2006 李鑫，保留所有权利。未经作者书面或PGP签名许可，禁止转载、修改、复制，或以其它未经授权的方式使用本文内容)

From quakelee:

Important data is those which you do not make everyday use, not big in size, and you want to get it back someday, while it is already lost.

Just for reference for future upgrades.

Today I managed to upgrade from OpenLDAP 2.2.29 to OpenLDAP 2.3.11. This is a large upgrade, so all and foremost thing is to backup. Additionally, to keep downtime as less as possible, build these stuff first!

On FreeBSD, the recommended way of installing third party software is to use ports(7). Note that OpenLDAP is separated into two ports, openldap2X-server and openldap2X-client, and building the server requires the client library, therefore, you can not easily do build on the production server (and this SHOULD be avoided anyway).

A solution is to use a separated box (or jail for smaller deployments), to build packages and use pkg_add to install them.

丢失数据是一件很没面子的事情。

我差点以为自己把家里机器上5年来的数据丢了。

郁闷许久，不备份啊，以前总是说别人啊，这次自己玩现了……