腳本的一些特點和功能:
解決腳本的符号連結問題,準确擷取腳本工作目錄(從tomcat腳本中學到);
顔色顯示,不同級别的資訊用不同的顔色顯示(共兩種方案,前一種從一位不知名的國外工程師處得到,後一種從lnmp1.2腳本中得到);
生成capistrano目錄結構;
清除過期目錄和檔案;
檢查部署要求是否滿足,如磁盤空間的需求等,其他的要求檢查有待于添加;
部署失敗後歸滾;
項目廢棄後删除項目;
腳本裡面盡可能的考慮容錯(異常判斷)和部分細節;
腳本存在的已知的問題:
(1)腳本中有幾個todo,有待于改善;
(2)repository目錄暫時沒有用到;
(3)擷取git的版本号問題;
(4)部署後生成的日志有待于優化;
(5)腳本基本使用英文(chinglish)作為注釋,部分注釋可能不全;
(6)可能存在的其他問題;
為了後期的改進和部分需求變更,也為了便于擷取該腳本,此腳本可以從github上擷取,歡迎和接受送出任何bug、issue以及任何improvement。
github位址是:
<a href="https://github.com/dingguodong/bashshellheader/blob/master/example-deploy.sh" target="_blank">https://github.com/dingguodong/bashshellheader/blob/master/example-deploy.sh</a>
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<code>#!/bin/bash</code>
<code># public header</code>
<code># =============================================================================================================================</code>
<code># resolve links - $0 may be a symbolic link</code>
<code>prg=</code><code>"$0"</code>
<code>while</code> <code>[ -h </code><code>"$prg"</code> <code>]; </code><code>do</code>
<code> </code><code>ls</code><code>=`</code><code>ls</code> <code>-ld </code><code>"$prg"</code><code>`</code>
<code> </code><code>link=`</code><code>expr</code> <code>"$ls"</code> <code>: </code><code>'.*-> \(.*\)$'</code><code>`</code>
<code> </code><code>if</code> <code>expr</code> <code>"$link"</code> <code>: </code><code>'/.*'</code> <code>> </code><code>/dev/null</code><code>; </code><code>then</code>
<code> </code><code>prg=</code><code>"$link"</code>
<code> </code><code>else</code>
<code> </code><code>prg=`</code><code>dirname</code> <code>"$prg"</code><code>`/</code><code>"$link"</code>
<code> </code><code>fi</code>
<code>done</code>
<code># get standard environment variables</code>
<code>prgdir=`</code><code>dirname</code> <code>"$prg"</code><code>`</code>
<code># echo color function</code>
<code>function</code> <code>cecho {</code>
<code> </code><code># usage:</code>
<code> </code><code># cecho -red sometext #error, failed</code>
<code> </code><code># cecho -green sometext # success</code>
<code> </code><code># cecho -yellow sometext # warning</code>
<code> </code><code># cecho -blue sometext # debug</code>
<code> </code><code># cecho -white sometext # info</code>
<code> </code><code># cecho -n # new line</code>
<code> </code><code># end</code>
<code> </code><code>while</code> <code>[ </code><code>"$1"</code> <code>]; </code><code>do</code>
<code> </code><code>case</code> <code>"$1"</code> <code>in</code>
<code> </code><code>-normal) color=</code><code>"\033[00m"</code> <code>;;</code>
<code># -black) color="\033[30;01m" ;;</code>
<code>-red) color=</code><code>"\033[31;01m"</code> <code>;;</code>
<code>-green) color=</code><code>"\033[32;01m"</code> <code>;;</code>
<code>-yellow) color=</code><code>"\033[33;01m"</code> <code>;;</code>
<code>-blue) color=</code><code>"\033[34;01m"</code> <code>;;</code>
<code># -magenta) color="\033[35;01m" ;;</code>
<code># -cyan) color="\033[36;01m" ;;</code>
<code>-white) color=</code><code>"\033[37;01m"</code> <code>;;</code>
<code>-n) one_line=1; </code><code>shift</code> <code>; </code><code>continue</code> <code>;;</code>
<code>*) </code><code>echo</code> <code>-n </code><code>"$1"</code><code>; </code><code>shift</code> <code>; </code><code>continue</code> <code>;;</code>
<code>esac</code>
<code>shift</code>
<code>echo</code> <code>-en </code><code>"$color"</code>
<code>echo</code> <code>-en </code><code>"$1"</code>
<code>echo</code> <code>-en </code><code>"\033[00m"</code>
<code>if</code> <code>[ ! $one_line ]; </code><code>then</code>
<code> </code><code>echo</code>
<code>fi</code>
<code>}</code>
<code># end echo color function</code>
<code># echo color function, smarter</code>
<code>function</code> <code>echo_r () {</code>
<code> </code><code>#error, failed</code>
<code> </code><code>[ $</code><code># -ne 1 ] && return 0</code>
<code> </code><code>echo</code> <code>-e </code><code>"\033[31m$1\033[0m"</code>
<code>function</code> <code>echo_g () {</code>
<code> </code><code># success</code>
<code> </code><code>echo</code> <code>-e </code><code>"\033[32m$1\033[0m"</code>
<code>function</code> <code>echo_y () {</code>
<code> </code><code># warning</code>
<code> </code><code>echo</code> <code>-e </code><code>"\033[33m$1\033[0m"</code>
<code>function</code> <code>echo_b () {\</code>
<code> </code><code># debug</code>
<code> </code><code>echo</code> <code>-e </code><code>"\033[34m$1\033[0m"</code>
<code># end echo color function, smarter</code>
<code>workdir=$prgdir</code>
<code># end public header</code>
<code># where to get source code</code>
<code>sourceurl=https:</code><code>//github</code><code>.com</code><code>/dingguodong/gitoscautodeploy</code><code>.git</code>
<code># setting how many days do you want save old releases, default is 10 days</code>
<code>save_old_releases_for_days=10</code>
<code>function</code> <code>setdirectorystructure() {</code>
<code> </code><code>if</code> <code>[ -f $workdir/.lock ];</code><code>then</code>
<code> </code><code>echo_g </code><code>"set directory structure has been done, skipping. "</code>
<code> </code><code>return</code>
<code> </code><code>fi</code>
<code> </code><code>echo_b </code><code>"setting directory structure."</code>
<code> </code><code># learn from capistrano</code>
<code> </code><code># refer: http://capistranorb.com/documentation/getting-started/structure/</code>
<code> </code><code># refer: http://capistranorb.com/documentation/getting-started/structure/#</code>
<code> </code><code># ├── current -> /var/www/my_app_name/releases/20150120114500/</code>
<code> </code><code># ├── releases</code>
<code> </code><code># │ ├── 20150080072500</code>
<code> </code><code># │ ├── 20150090083000</code>
<code> </code><code># │ ├── 20150100093500</code>
<code> </code><code># │ ├── 20150110104000</code>
<code> </code><code># │ └── 20150120114500</code>
<code> </code><code># ├── repo</code>
<code> </code><code># │ └── <vcs related data></code>
<code> </code><code># ├── revisions.log</code>
<code> </code><code># └── shared</code>
<code> </code><code># └── <linked_files and linked_dirs></code>
<code> </code><code># current is a symlink pointing to the latest release. this symlink is updated at the end of a successful deployment. if the deployment fails in any step the current symlink still points to the old release.</code>
<code> </code><code># releases holds all deployments in a timestamped folder. these folders are the target of the current symlink.</code>
<code> </code><code># repo holds the version control system configured. in case of a git repository the content will be a raw git repository (e.g. objects, refs, etc.).</code>
<code> </code><code># revisions.log is used to log every deploy or rollback. each entry is timestamped and the executing user (username from local machine) is listed. depending on your vcs data like branchnames or revision numbers are listed as well.</code>
<code> </code><code># shared contains the linked_files and linked_dirs which are symlinked into each release. this data persists across deployments and releases. it should be used for things like database configuration files and static and persistent user storage handed over from one release to the next.</code>
<code> </code><code># the application is completely contained within the path of :deploy_to. if you plan on deploying multiple applications to the same server, simply choose a different :deploy_to path.</code>
<code> </code><code># check directories for deploy</code>
<code> </code><code># [ ! -d $workdir/current ] && mkdir $workdir/current</code>
<code> </code><code>[ ! -d $workdir</code><code>/release</code> <code>] && </code><code>mkdir</code> <code>$workdir</code><code>/release</code>
<code> </code><code>[ ! -d $workdir</code><code>/repository</code> <code>] && </code><code>mkdir</code> <code>$workdir</code><code>/repository</code>
<code> </code><code>[ ! -d $workdir</code><code>/share</code> <code>] && </code><code>mkdir</code> <code>$workdir</code><code>/share</code>
<code> </code><code># end directories structure</code>
<code> </code><code>touch</code> <code>$workdir/.lock</code>
<code> </code><code>echo_g </code><code>"set directory structure successfully! "</code>
<code>function</code> <code>checkdependencies() {</code>
<code> </code><code>echo_b </code><code>"checking dependencies for deploy procedure. "</code>
<code> </code><code># refer:</code>
<code> </code><code># if [ -z ${var+x} ]; then</code>
<code> </code><code># echo "var is unset"; else echo "var is set to '$var'"</code>
<code> </code><code># fi</code>
<code> </code><code># if [ "$var x" = " x" ]; then</code>
<code> </code><code># echo "var is empty"; else echo "var is set to '$var'"</code>
<code> </code><code># if [ -z $var ]; then</code>
<code> </code><code>if</code> <code>[[ -z $sourceurl ]]; </code><code>then</code>
<code> </code><code>echo_r </code><code>"error: sourceurl is undefined! "</code>
<code> </code><code>exit</code> <code>1</code>
<code> </code><code>diskspace=`</code><code>df</code> <code>$workdir | </code><code>tail</code> <code>-n1 | </code><code>awk</code> <code>'{print $(nf -2)}'</code><code>`</code>
<code> </code><code>if</code> <code>[[ $diskspace -lt 2097152 ]]; </code><code>then</code>
<code> </code><code>echo_y </code><code>"warning: disk space of $workdir is smaller than 2gb"</code>
<code> </code><code>#exit 1</code>
<code> </code><code>echo_g </code><code>"all required dependencies check pass! "</code>
<code>function</code> <code>cleanoldreleases(){</code>
<code> </code><code>save_days=${save_old_releases_for_days:-10}</code>
<code> </code><code>if</code> <code>[ ! -d $workdir</code><code>/release</code> <code>]; </code><code>then</code>
<code> </code><code>echo_b </code><code>"can not find release directory, skipping . "</code>
<code> </code><code>need_clean=$(</code><code>find</code> <code>$workdir</code><code>/release</code> <code>-mtime +$save_days -</code><code>exec</code> <code>ls</code> <code>{} \;)</code>
<code> </code><code>if</code> <code>[ ! -z $need_clean ]; </code><code>then</code>
<code> </code><code>echo_g </code><code>"expired releases found and will be removed from project! "</code>
<code> </code><code>find</code> <code>$workdir</code><code>/release</code> <code>-mtime +$save_days -</code><code>exec</code> <code>rm</code> <code>-rf {} \;</code>
<code> </code><code>if</code> <code>[ $? -</code><code>eq</code> <code>0 ]; </code><code>then</code>
<code> </code><code>echo_g </code><code>"expired releases have removed from project! "</code>
<code> </code><code>else</code>
<code> </code><code>echo_r </code><code>"can not remove expired releases, please alter to admin users. "</code>
<code> </code><code>fi</code>
<code> </code><code>else</code>
<code> </code><code>echo_g </code><code>"all releases are not expired, skipping. "</code>
<code>function</code> <code>deploy() {</code>
<code> </code><code># check a directories lock, note: this is redundant</code>
<code> </code><code>if</code> <code>[[ ! -f $workdir/.lock ]]; </code><code>then</code>
<code> </code><code>setdirectorystructure</code>
<code> </code><code>cleanoldreleases</code>
<code> </code><code>checkdependencies</code>
<code> </code><code># make directory to release directory</code>
<code> </code><code>sourcedir=</code><code>"$workdir/release/$(date +%y%m%d%h%m%s)"</code>
<code> </code><code>[ ! -d $sourcedir ] && </code><code>mkdir</code> <code>$sourcedir</code>
<code> </code><code># get files from source code repository</code>
<code> </code><code>git clone $sourceurl $sourcedir</code>
<code> </code><code># svn co http://$sourceurl $workdir/repository</code>
<code> </code><code># todo</code>
<code> </code><code># get branchnames or revision numbers from vcs data</code>
<code> </code><code># remove .git or .svn</code>
<code> </code><code>[ -d $sourcedir/.git ] && </code><code>rm</code> <code>-rf $sourcedir/.git</code>
<code> </code><code>[ -d $sourcedir/.svn ] && </code><code>rm</code> <code>-rf $sourcedir/.svn</code>
<code> </code><code># ifdef complie</code>
<code> </code><code># endif</code>
<code> </code><code># make source code symbolic link to current</code>
<code> </code><code>( [ -f $workdir</code><code>/current</code> <code>] || [ -d $workdir</code><code>/current</code> <code>] ) && </code><code>rm</code> <code>-rf $workdir</code><code>/current</code>
<code> </code><code>ln</code> <code>-s $sourcedir $workdir</code><code>/current</code>
<code> </code><code># move conf and logs directies from release to share</code>
<code> </code><code>[ -d $workdir</code><code>/release/conf</code> <code>] && </code><code>mv</code> <code>$workdir</code><code>/release/conf</code> <code>$workdir</code><code>/share/conf</code>
<code> </code><code>[ -d $workdir</code><code>/release/logs</code> <code>] && </code><code>mv</code> <code>$workdir</code><code>/release/logs</code> <code>$workdir</code><code>/share/logs</code>
<code> </code><code># make conf and logs symbolic link to current</code>
<code> </code><code>[ -d $workdir</code><code>/share/conf</code> <code>] && </code><code>ln</code> <code>-s $workdir</code><code>/share/conf</code> <code>$workdir</code><code>/current/conf</code>
<code> </code><code>[ -d $workdir</code><code>/share/logs</code> <code>] && </code><code>ln</code> <code>-s $workdir</code><code>/share/logs</code> <code>$workdir</code><code>/current/logs</code>
<code> </code><code># start service or validate status</code>
<code> </code><code>if</code> <code>[[ -e $workdir</code><code>/current/bin/startup</code><code>.sh ]]; </code><code>then</code>
<code> </code><code>$workdir</code><code>/current/bin/startup</code><code>.sh start</code>
<code> </code><code>retval=$?</code>
<code> </code><code># todo</code>
<code> </code><code># external health check</code>
<code> </code><code>retval=0</code>
<code> </code><code>retval=$?</code>
<code> </code><code># if started ok, then create a workable program to a file</code>
<code> </code><code>if</code> <code>[[ $retval -</code><code>eq</code> <code>0 ]]; </code><code>then</code>
<code> </code><code># note cat with eof must start at row 0, and with eof end only, such as no blank spaces, etc</code>
<code> </code><code>cat</code> <code>>$workdir</code><code>/share/workable_program</code><code>.log <<eof</code>
<code>$sourcedir</code>
<code>eof</code>
<code> </code><code>echo_g </code><code>"deploy successfully! "</code>
<code> </code><code>echo_g </code><code>"current workable version is $(cat $workdir/share/workable_program.log)"</code>
<code> </code><code>ls</code> <code>--color=auto -l $workdir</code><code>/current</code>
<code> </code><code>echo_r </code><code>"error: deploy failed! "</code>
<code> </code><code>$0 rollback</code>
<code># rollback to last right configuraton</code>
<code>function</code> <code>rollback() {</code>
<code> </code><code># the key is find last files which can work</code>
<code> </code><code>workable_program=`</code><code>cat</code> <code>$workdir</code><code>/share/workable_program</code><code>.log`</code>
<code> </code><code>if</code> <code>[[ -z workable_program ]]; </code><code>then</code>
<code> </code><code>echo_r </code><code>"error: can not find workable release version! please check if it is first deployment! "</code>
<code> </code><code># # stop service</code>
<code> </code><code>$workdir</code><code>/current/bin/startup</code><code>.sh stop</code>
<code> </code><code># remove failed deploy</code>
<code> </code><code>rm</code> <code>-rf $workdir</code><code>/current</code>
<code> </code><code># remake source code symbolic link to current</code>
<code> </code><code>ln</code> <code>-s $workable_program $workdir</code><code>/current</code>
<code> </code><code># remake conf and logs symbolic link to current</code>
<code> </code><code>[ -d $workdir</code><code>/share/conf</code> <code>] && </code><code>ln</code> <code>-s $workdir</code><code>/share/conf</code> <code>$workdir</code><code>/current</code>
<code> </code><code>[ -d $workdir</code><code>/share/logs</code> <code>] && </code><code>ln</code> <code>-s $workdir</code><code>/share/logs</code> <code>$workdir</code><code>/current</code>
<code> </code><code>echo_g </code><code>"rollback successfully! "</code>
<code> </code><code>echo_g </code><code>"current workable version is $workable_program"</code>
<code> </code><code>ls</code> <code>--color=auto -l $workdir</code><code>/current</code>
<code>function</code> <code>destroy() {</code>
<code> </code><code># echo a warning message</code>
<code> </code><code>echo_y </code><code>"warning: this action will destroy all this project, and this is unrecoverable! "</code>
<code> </code><code>answer=</code><code>"n"</code>
<code> </code><code>echo_y </code><code>"do you want to destroy this project? "</code>
<code> </code><code>read</code> <code>-p </code><code>"(default no,if you want please input: y ,if not please press the enter button):"</code> <code>answer</code>
<code> </code><code>case</code> <code>"$answer"</code> <code>in</code>
<code> </code><code>y|y|yes|yes|</code><code>yes</code><code>|yes|yes|yes|yes )</code>
<code> </code><code># delete all file expect for this script self</code>
<code> </code><code># find: warning: unix filenames usually don't contain slashes (though pathnames do). that means that '-name `./deploy.sh'' will probably evaluate to false all the time on this system. you might find the '-wholename' test more useful, or perhaps '-samefile'. alternatively, if you are using gnu grep, you could use 'find ... -print0 | grep -fzz `./deploy.sh''.</code>
<code> </code><code># echo $workdir/</code>
<code> </code><code>#find -l $workdir -type f ! -name "$(basename $0)" -exec ls --color=auto -al {} \;</code>
<code> </code><code># find -l . -type f ! -name "deploy.sh" -exec ls --color=auto -al {} \;</code>
<code> </code><code># find -l . -type d -exec ls --color=auto -al {} \;</code>
<code> </code><code># find -l ./ -maxdepth 1 ! -name "deploy.sh" ! -wholename "./"</code>
<code> </code><code># ls | grep -v "fielname" |xargs rm -rf</code>
<code> </code><code>find</code> <code>-l $workdir -maxdepth 1 ! -name </code><code>"$(basename $0)"</code> <code>! -wholename </code><code>"$workdir"</code> <code>-</code><code>exec</code> <code>rm</code> <code>-rf {} \;</code>
<code> </code><code>if</code> <code>[ $? -</code><code>eq</code> <code>0 ];</code><code>then</code>
<code> </code><code>echo_g </code><code>"destory this project successfully! now will exit with status 0. "</code>
<code> </code><code>exit</code> <code>0</code>
<code> </code><code>echo_r </code><code>"error: something go wrong! please check or alter to admin user! "</code>
<code> </code><code>exit</code> <code>1</code>
<code> </code><code>;;</code>
<code> </code><code>n|n|no|no|no|no)</code>
<code> </code><code>echo_g </code><code>"destroy action is cancel"</code>
<code> </code><code>exit</code> <code>0</code>
<code> </code><code>*)</code>
<code> </code><code>echo_r </code><code>"are you kidding me? you are a bad kid! "</code>
<code> </code><code>esac</code>
<code># just a test for call itself, comment it</code>
<code># if [[ $# -lt 1 ]]; then</code>
<code># $0 help</code>
<code># exit</code>
<code># fi</code>
<code>case</code> <code>$1 </code><code>in</code>
<code> </code><code>deploy)</code>
<code> </code><code>deploy</code>
<code> </code><code>rollback)</code>
<code> </code><code>rollback</code>
<code> </code><code>destroy)</code>
<code> </code><code>destroy</code>
<code> </code><code>help|*)</code>
<code> </code><code>echo</code> <code>"usage: $0 {deploy|rollback|destroy} with $0 itself"</code>
<code># this is not essential with 'case .. esac' handled no args excutions</code>
<code># replace "exit 0" with ":"</code>
<code>#exit 0</code>
<code>:</code>
tag:自動化部署腳本,shell部署腳本,capistrano的shell腳本實作,腳本實作自動更新和復原,自動化部署shell腳本執行個體
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