64 lines
3.9 KiB
Markdown
64 lines
3.9 KiB
Markdown
Install Scripts for Compass
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===========================
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You can install Compass to a CentOS-6.5/6.6 system by running install scripts.
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##Quick steps to install Compass
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i. run ```./install.sh```
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ii. install.sh will pop up questions to understand your configurations. It will provide default values based on calculated results. For a more detailed explanation of these questions please [visit Compass user doc on Compass official site](http://www.syscompass.org/install.html#step-one). In most cases, using the default values will do the trick
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iii. After answering all the questions, install.sh will take over the installation. The whole process may take 30-45 minutes depending on your network latency and the choices you made.
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##Files
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* ansible.sh - script to install ansible package, called by install.sh.
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* chef.sh - script to install and configure chef-server and knife, called by install.sh.
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* cobbler.sh - script to install and configure cobbler server, called by install.sh
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* compass.sh - script to install and configure compass and its components, called by install.sh
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* compass_web.sh - script to setup compass front-end UI and http server for local repositories, called by install.sh
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* dependency.sh - script to install all the dependency packages for compass, called by install.sh
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* install.conf - conf file that contains all the variables used by all sh files. You can give default values to
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variables so that install script will not ask questions. Examples will be given in next section.
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* install.conf.template - a template/example for install.conf, this file is used by compass regtest to install compass.
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* install_func.sh - contains the common functions for all scripts.
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* install.sh - main entrance.
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* prepare.sh - script to prepare environments, pre-download ISOs and update services/packages.
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* setup_env.sh - script to cache all the user inputs and persist the inputs into an env.conf file for scripts to use.
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This makes sure that when somehow the install process is aborted, running each script file separtely still works.
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##Example of install.conf variables(for developers)
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For example, in install.conf there's no default value set for NIC variable, thus install.sh will ask you to fill in during the script run:
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export NIC=${NIC:-}
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If you give it a default value, install.sh will take it and skip the question:
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export NIC=$(NIC:-eth0}
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Now *eth0* will be used by install.sh to answer the question of `Please enter the NIC:` If you wish to contribute to compass and add your own variables for compass install scripts to use, you can simply call `loadvars()` function in `install.sh`:
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loadvars foo "bar"
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Adding this line to `install.sh` will result in a new question being asked as:
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"```Please enter the foo```" and the default value for `foo` is `bar`.
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You would also need to add
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foo=\${foo:-$foo}
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into `setup_env.sh` to make sure the user input value gets persisted into `env.conf`.
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##Q&A
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Q: I am a new user of Compass and I do not know too much about DevOps. I am not sure how to answer those questions asked by `install.sh`. What should I do?
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A: `install.sh` can give default answers based on the calculated results. If you are not sure about your environment, you can just simply follow the default values(press ENTER).
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Q: Some questions ask me to provide `Y/N` and won't accept `ENTER` as an answer?
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A: Yes those questions are flags for supporting different distributions. If you are not familiar with those distributions, simply answer `Y` to the ones you would like to support. Also answer `Y` to all those questions is not a bad idea.
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Q: Installation was aborted for some reason and I do not wish to answer those questions all over again, can I run scripts one by one?
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A: Yes, please run the scripts in this order:
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`dependency.sh -> prepare.sh -> cobbler.sh -> chef.sh -> ansible.sh -> compass-web.sh -> compass.sh`
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