Networking policies in traditional companies are very strict due to its traditional nature. This may mean a lot from administrative or audit point of view, but as a developer, it makes me very difficult to apply DevOps practices like build CD pipe... »
ssh 端口转发 先复习一下基础知识，ssh 端口转发（ssh Port Forwarding），也叫ssh通道（ssh tunnel），是openSSH提供的~~中国~~特色功能。它的功能，是在一条已经建立的ssh连接的基础上，将对本地端口的请求，经由ssh，通过ssh server转发到另外一台服务器；或者对ssh server端口的请求经由ssh，通过本地机器转发到另外一台服务器。它有3种： ssh本地端口转发（Local port forwarding） ssh远端端口... »
Ansible, being concise and decent with everything in YAML and agentless, has been a better choice among DevOps tools like Puppet, Chef, and Salt. I’ve been using Ansible for the past 3 projects I engaged in. The last one relies heavily on Ansible ... »
在最近的这个项目上，我们选择了用Ansible做基础环境的搭建和软件包的部署。Ansible，相对于Puppet和Chef，要更简洁和干净一些，首先是agentless，被控机器上不需要安装任何依赖；其次YAML格式的状态声明语句和playbook，比Ruby的DSL要更简洁一些。但是跟很多新技术一样，小规模玩一玩觉得还蛮有意思，上了规模之后，各种坑和痛点就显现出来了。我在这里罗列一下我们遭受的创痛，供后来人参考。注意首先我在这里只破不立，只描述痛点，不一定提供解决方案；其次我列出的坑不一... »
Motivation As a git user, given this sceniro: You made certain changes to some files but you don’t want to commit it, nor do you want see them under git status -s or git diff etc. In other words: You want git to ignore certain files but... »