VPS的选择#

如何选择VPS，第一要素自然是是看延迟咯，所以我们先上这个网站测试下你到一些常见的VPS供应商机房的延迟，下面给张图：

测完延迟后就选一款适合你的…

测试网站的开源地址：https://github.com/msmbps/msmbps

VPS的测试#

这里我们使用秋水逸冰大佬的一键测试脚本来进行VPS性能的测试命令：

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wget -qO- bench.sh | bash

或者

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curl -Lso- bench.sh | bash

备注 bench.sh 既是脚本名，同时又是域名。给个图：测试完了，感觉还可以就留着，不行的的话就该退款退款，该换就换，千万别凑活着用，给自己找不自在，最后还发工单撕…

系统大版本升级#

有时候，VPS商家给的系统模板并不是最新的，这时候我们就需要手动升级下系统（本文Ubuntu向）首先，我们需要升级下软件包

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sudo apt-get update
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sudo apt-get upgrade

接着安装update-manager-core

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sudo apt-get install update-manager-core

然后打开文件/etc/update-manager/release-upgrades，确认Prompt的值设定为lts：

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# Default behavior for the release upgrader.
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[DEFAULT]
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# Default prompting behavior, valid options:
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#
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#  never  - Never check for a new release.
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#  normal - Check to see if a new release is available.  If more than one new
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#           release is found, the release upgrader will attempt to upgrade to
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#           the release that immediately succeeds the currently-running
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#           release.
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#  lts    - Check to see if a new LTS release is available.  The upgrader
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#           will attempt to upgrade to the first LTS release available after
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#           the currently-running one.  Note that this option should not be
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#           used if the currently-running release is not itself an LTS
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#           release, since in that case the upgrader won't be able to
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#           determine if a newer release is available.
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Prompt=lts