需求:
使用docker來啟動nginx + tomcat 雙進程,實際應用中,多進程還是比較常見的。
1: 創建dockerfile目錄
mkdir?-p?/docker/web
2: 編寫dockerfile: /docker/web/dockerfile
from?centos7 maintainer?lin?test@163.com copy?centos-base.repo?/etc/yum.repos.d/centos-base.repo copy?nginx_install.sh?/tmp/nginx_install.sh run?sh?/tmp/nginx_install.sh;?rm?-rf?/usr/local/src/* run?sed?-i?-e?'/worker_processes/a?daemon?off;'?/usr/local/nginx/conf/nginx.conf; ? copy?jdk-8u162-linux-x64.tar.gz?/usr/local/src/jdk-8u162-linux-x64.tar.gz copy?tomcat_install.sh?/tmp/tomcat_install.sh run?sh?/tmp/tomcat_install.sh;?rm?-rf?/usr/local/src/* ? copy?supervisor_install.sh?/tmp/supervisor_install.sh copy?supervisord.conf?/etc/supervisord.conf copy?start_tomcat.sh?/usr/local/tomcat/bin/mystart.sh run?sh?/tmp/supervisor_install.sh;?rm?-rf?/tmp/*.sh
3: dockerfile集成的配置文件及安裝文件
3.1 默認源下載較慢,更換yum源,以下centos-base.repo配置文件拷貝到容器里更換
copy?centos-base.repo?/etc/yum.repos.d/centos-base.repo [root@docker?web]#?cat?centos-base.repo? [base] name=centos-$releasever?-?base baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-centos-7 ? #released?updates [updates] name=centos-$releasever?-?updates baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-centos-7 ? #additional?packages?that?may?be?useful [extras] name=centos-$releasever?-?extras baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-centos-7 ? #additional?packages?that?extend?functionality?of?existing?packages [centosplus] name=centos-$releasever?-?plus baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-centos-7
3.2nginx安裝腳本
[root@docker?web]#?cat?nginx_install.sh? yum?install?-y?wget?tar?gcc?gcc-c++?make?pcre?pcre-devel?zlib?zlib-devel?openssl?openssl-devel ? cd?/usr/local/src wget?'http://nginx.org/download/nginx-1.12.2.tar.gz' tar?-zxvf?nginx-1.12.2.tar.gz cd?nginx-1.12.2 ./configure?--prefix=/usr/local/nginx?--with-http_ssl_module?--with-stream?--with-stream_ssl_module make make?install exit?0
3.3tomcat安裝腳本
[root@docker?web]#?cat?tomcat_install.sh? yum?install?-y?wget?tar cd?/usr/local/src/ tar?-zxvf?jdk-8u162-linux-x64.tar.gz mv?jdk1.8.0_162?/usr/local/ #/usr/local/jdk1.8.0_162/bin/java?-version ? #配置java環境變量 echo?'java_home=/usr/local/jdk1.8.0_162/'?>>/etc/profile echo?'path=$path:$java_home/bin'?>>/etc/profile echo?'classpath=.:$java_home/lib/tools.jar:$java_home/lib/dt.jar:$classpath'?>>/etc/profile source?/etc/profile ? wget?https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.38/bin/apache-tomcat-8.5.38.tar.gz tar?-zxvf?apache-tomcat-8.5.38.tar.gz mv?apache-tomcat-8.5.38?/usr/local/tomcat
3.4dockerfile文件中涉及到的配置文件、腳本、安裝包如下
[root@docker?web]#?ll total?185384 -rw-r--r--?1?root?root?835?mar?9?01:12?centos-base.repo -rw-r--r--?1?root?root?669?mar?9?01:11?dockerfile -rw-r--r--?1?root?root?189815615?mar?9?01:15?jdk-8u162-linux-x64.tar.gz -rw-r--r--?1?root?root?340?mar?9?01:13?nginx_install.sh -rw-r--r--?1?root?root?581?mar?9?01:17?tomcat_install.sh
4: 一鍵安裝supervisor: /docker/web/supervisor_install.sh
yum?-y?install?epel-release yum?-y?install?python2-pip pip?install?supervisor
5: supervisor配置文件: /docker/web/supervisord.conf
[unix_http_server] file=/tmp/supervisor.sock?;?the?path?to?the?socket?file ? [supervisord] logfile=/tmp/supervisord.log?;?日志 logfile_maxbytes=50mb?;?最大50m日志 logfile_backups=10?;?輪循日志備份10個 loglevel=info?;?日志等級記錄info的 pidfile=/tmp/supervisord.pid?;pid nodaemon=true?;在前臺啟動 minfds=102400?;?文件描述符限制 minprocs=2000?;?進程數 ? [rpcinterface:supervisor] supervisor.rpcinterface_factory?=?supervisor.rpcinterface:make_main_rpcinterface ? [supervisorctl] serverurl=unix:///tmp/supervisor.sock?;?use?a?unix://?url?for?a?unix?socket ? [program:nginx] command=/usr/local/nginx/sbin/nginx?;?前臺啟動nginx autostart=true?;?隨著supervisor自動啟動 startsecs=10?;?啟動10s后算正常啟動 autorestart=true?;?程序退出后自動重啟 startretries=3?;?啟動失敗自動重試次數 stdout_logfile_maxbytes=20mb?;stdout?日志文件大小最大20mb stdout_logfile=/usr/local/nginx/logs/out.log ? [program:tomcat] command=sh?/usr/local/tomcat/bin/mystart.sh?;?前臺啟動tomcat autostart=true?;?隨著supervisor自動啟動 startsecs=10?;?啟動10s后算正常啟動 autorestart=true?;?程序退出后自動重啟 startretries=3?;?啟動失敗自動重試次數 stdout_logfile_maxbytes=20mb?;stdout?日志文件大小最大20mb stdout_logfile=/usr/local/tomcat/logs/catalina.out
6: tomcat的啟動腳本/docker/web/start_tomcat.sh
#由于supervisor無法使用source,需要編寫個腳本來啟動 source?/etc/profile /usr/local/tomcat/bin/catalina.sh?run
7: 構建鏡像
cd?/docker/web docker?build?-t?shijiange_web?. [root@docker?web]#?docker?images repository?tag?image?id?created?size shijiange_web?latest?bc06a9974252?7?seconds?ago?1.33?gb
8: 啟動容器測試
[root@docker?web]#?docker?run?-d?shijiange_web?/bin/bash?-c?'supervisord?-c?/etc/supervisord.conf' 76782ab71c3b1d2f818ad76214d6336ae11a524eeb9d211f154fe4ad5226015d [root@docker?web]#? [root@docker?web]#?docker?ps container?id?image?command?created?status?ports?names 76782ab71c3b?shijiange_web?"container-entrypo..."?12?seconds?ago?up?12?seconds?happy_jones
9.測試驗證:
[root@docker?web]#?docker?exec?-it?76782ab?/bin/bash bash-4.2#?ifconfig
10.容器驗證:cURL nginx
11.容器驗證:curl tomcat
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