Five minutes to kill a single server.

Today bought a Linux cloud server, buy a whole year, and intend to deploy their own website, because has been deployed before, pro, and a little excited ... After five minutes, login not to go in ... The moment feels good and sad urges ... Here is a detailed talk about how things happened, summed up the lesson.

event occurs:

When installing the SVN service, you need to install the dependency package OpenSSL first, the system comes with OpenSSL, I uninstalled it first, and then started to install another high version of OpenSSL, in the make times wrong said need zlib package, then I started uploading zlib package, found remote FTP connection is not up (at this time the connection is not broken, you can also use), I could not find the reason to restart the system, the results are no longer connected to the server ...

OpenSSL role:

In simple terms, OpenSSL is the technology for encrypting connections and transmissions. Because of this, after I uninstalled it, it affected the remote connection.

Experience Summary:

1. Before you make a system change, you need to make a backup, either a backup of the entire system or a backup of a specific operation to restore immediately after a problem occurs.

2. The restart of the system is considered by many to be a magic weapon to solve the problem, it is true, but not all of them, be cautious.

3. If the status quo remains unchanged due to malfunction or failure of the cause, it is better to keep the status quo intact. Do not think of a solution to begin to try to solve, to force yourself to calm down, recall the failure before the occurrence of what to do, analyze the cause of the failure, you can search online or with the relevant technical personnel to discuss, and then to remedy.

Near the approaching, production is always out of trouble, although not their own, but every time the news of the failure to hear, will not naturally have a sense of feeling, to develop the habit of serious operation, enhance safety awareness!

Five minutes to kill a single server.