docker构建镜像

docker构建镜像

使用docker构建os、jdk、app镜像，并为镜像标签，运行容器，。

1.构建centos镜像

[root@aliyun ~]# mkdir -p /home/docker/{centos,ssh,tomcat_jdk,app,sh,logs}[root@aliyun ~]# cd /home/docker/centos

1.1编写dockerfile

[root@aliyun centos]# vim Dockerfile#Base ImageFROM centos#MaintainerMAINTAINER CooLWo#RUNRUN curl -o /etc/yum.repos.d/epel.repo yum -y install vim wget sudo git bash-completion lrzsz unzip zip nmap nc tree net-tools brctl htop top iotop ntp iproute lsof screen nload iftop iptraf iotop multitail nmon iptraf nethogs xterm && yum clean all

1.2开始构建

[root@aliyun centos]# docker build -t centos_v1 .

2.构建带有ssh的centos镜像

[root@aliyun ~]# cd /home/docker/ssh

2.1编写dockerfile

[root@aliyun ssh]# vim Dockerfile#Base ImageFROM centos_v1#MaintainerMAINTAINER CooLWo#RUNRUN yum -y install supervisor openssh-server openssh-clients openssl-devel && yum clean allRUN ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_keyRUN ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_keyRUN ssh-keygen -A -t dsa -f /etc/ssh/ssh_host_dsa_key#Set Root PasswordRUN echo "root:123456" | chpasswd#For supervisonADD supervisord.conf /etc/supervisord.confADD sshd.ini /etc/supervisord.d/sshd.ini#Outside portEXPOSE 22CMD ["/usr/bin/supervisord","-c","/etc/supervisord.conf"][root@dc02 centos-ssh]#

2.2编写sshd.ini

[root@dc02 centos-ssh]# vim sshd.ini [program:sshd]command=/usr/sbin/sshd -Dprocess_name=%(program_name)sautostart=true[root@dc02 centos-ssh]#

2.3编写supervisord.conf

[root@dc02 centos-ssh]# vim supervisord.conf ; Sample supervisor config file.[unix_; (the path to the socket file);chmod=0700 ; sockef file mode (default 0700);chown=nobody:nogroup ; socket file uid:gid owner;username=user ; (default is no username (open server));password=123 ; (default is no password (open server));[inet_; inet (TCP) server disabled by default;port=127.0.0.1:9001 ; (ip_address:port specifier, *:port for all iface);username=user ; (default is no username (open server));password=123 ; (default is no password (open server))[supervisord]logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)logfile_maxbytes=50MB ; (max main logfile bytes b4 rotation;default 50MB)logfile_backups=10 ; (num of main logfile rotation backups;default 10)loglevel=info ; (log level;default info; others: debug,warn,trace)pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)nodaemon=true ; (start in foreground if true;default false)minfds=1024 ; (min. avail startup file descriptors;default 1024)minprocs=200 ; (min. avail process descriptors;default 200);umask=022 ; (process file creation umask;default 022);user=chrism ; (default is current user, required if root);identifier=supervisor ; (supervisord identifier, default is 'supervisor');directory=/tmp ; (default is not to cd during start);nocleanup=true ; (don't clean up tempfiles at start;default false);childlogdir=/tmp ; ('AUTO' child log dir, default $TEMP);environment=KEY=value ; (key value pairs to add to environment);strip_ansi=false ; (strip ansi escape codes in logs; def. false); the below section must remain in the config file for RPC; (supervisorctl/web interface) to work, additional interfaces may be; added by defining them in separate rpcinterface: sections[rpcinterface:supervisor]supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface[supervisorctl]serverurl=unix:///var/run/supervisor/supervisor.sock ; use a unix:// URL for a unix socket;serverurl=; use an url to specify an inet socket;username=chris ; should be same as if set;password=123 ; should be same as if set;prompt=mysupervisor ; cmd line prompt (default "supervisor");history_file=~/.sc_history ; use readline history if available; The below sample program section shows all possible program subsection values,; create one or more 'real' program: sections to be able to control them under; supervisor.;[program:theprogramname];command=/bin/cat ; the program (relative uses PATH, can take args);process_name=%(program_name)s ; process_name expr (default %(program_name)s);numprocs=1 ; number of processes copies to start (def 1);directory=/tmp ; directory to cwd to before exec (def no cwd);umask=022 ; umask for process (default None);priority=999 ; the relative start priority (default 999);autostart=true ; start at supervisord start (default: true);autorestart=true ; retstart at unexpected quit (default: true);startsecs=10 ; number of secs prog must stay running (def. 1);startretries=3 ; max # of serial start failures (default 3);exitcodes=0,2 ; 'expected' exit codes for process (default 0,2);stopsignal=QUIT ; signal used to kill process (default TERM);stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10);user=chrism ; setuid to this UNIX account to run the program;redirect_stderr=true ; redirect proc stderr to stdout (default false);stdout_logfile=/a/path ; stdout log path, NONE for none; default AUTO;stdout_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stdout_logfile_backups=10 ; # of stdout logfile backups (default 10);stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0);stdout_events_enabled=false ; emit events on stdout writes (default false);stderr_logfile=/a/path ; stderr log path, NONE for none; default AUTO;stderr_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stderr_logfile_backups=10 ; # of stderr logfile backups (default 10);stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0);stderr_events_enabled=false ; emit events on stderr writes (default false);environment=A=1,B=2 ; process environment additions (def no adds);serverurl=AUTO ; override serverurl computation (childutils); The below sample eventlistener section shows all possible; eventlistener subsection values, create one or more 'real'; eventlistener: sections to be able to handle event notifications; sent by supervisor.;[eventlistener:theeventlistenername];command=/bin/eventlistener ; the program (relative uses PATH, can take args);process_name=%(program_name)s ; process_name expr (default %(program_name)s);numprocs=1 ; number of processes copies to start (def 1);events=EVENT ; event notif. types to subscribe to (req'd);buffer_size=10 ; event buffer queue size (default 10);directory=/tmp ; directory to cwd to before exec (def no cwd);umask=022 ; umask for process (default None);priority=-1 ; the relative start priority (default -1);autostart=true ; start at supervisord start (default: true);autorestart=unexpected ; restart at unexpected quit (default: unexpected);startsecs=10 ; number of secs prog must stay running (def. 1);startretries=3 ; max # of serial start failures (default 3);exitcodes=0,2 ; 'expected' exit codes for process (default 0,2);stopsignal=QUIT ; signal used to kill process (default TERM);stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10);user=chrism ; setuid to this UNIX account to run the program;redirect_stderr=true ; redirect proc stderr to stdout (default false);stdout_logfile=/a/path ; stdout log path, NONE for none; default AUTO;stdout_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stdout_logfile_backups=10 ; # of stdout logfile backups (default 10);stdout_events_enabled=false ; emit events on stdout writes (default false);stderr_logfile=/a/path ; stderr log path, NONE for none; default AUTO;stderr_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stderr_logfile_backups ; # of stderr logfile backups (default 10);stderr_events_enabled=false ; emit events on stderr writes (default false);environment=A=1,B=2 ; process environment additions;serverurl=AUTO ; override serverurl computation (childutils); The below sample group section shows all possible group values,; create one or more 'real' group: sections to create "heterogeneous"; process groups.;[group:thegroupname];programs=progname1,progname2 ; each refers to 'x' in [program:x] definitions;priority=999 ; the relative start priority (default 999); The [include] section can just contain the "files" setting. This; setting can list multiple files (separated by whitespace or; newlines). It can also contain wildcards. The filenames are; interpreted as relative to this file. Included files *cannot*; include files themselves.[include]files = supervisord.d/*.ini[root@dc02 centos-ssh]#

2.4开始构建

[root@dc02 centos-ssh]# docker build -t centos-ssh_v1 .

3.构建tomcat+jdk镜像

[root@aliyun ~]# cd /home/docker/tomcat_jdk/

3.1编写dockerfile

[root@aliyun tomcat_jdk]# vim Dockerfile#Base ImageFROM centos-ssh_v1#MaintainerMAINTAINER CooLWo#TomcatADD apache-tomcat-8.5.37.tar.gz /usr/localRUN ln -s /usr/local/apache-tomcat-8.5.37 /usr/local/tomcatENV TOMCAT_HOME /usr/local/tomcat#jdkADD jdk-8u144-linux-x64.tar.gz /usr/localRUN ln -s /usr/local/jdk1.8.0_144 /usr/local/jdkENV JAVA_HOME=/usr/local/jdkENV JRE_HOME=$JAVA_HOME/jreENV CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib:$CLASSPATHENV PATH=/sbin:$JAVA_HOME/bin:$PATH#projectADD memtest.war /usr/local/tomcat/webapps/WORKDIR /usr/local/tomcatRUN rm -f /usr/local/*.tar.gz#For SupervisorADD tomcat.ini /etc/supervisord.d/tomcat.ini#Outside portEXPOSE 22 8080CMD ["/usr/bin/supervisord","-c","/etc/supervisord.conf"]

3.2编写tomcat.ini

[root@aliyun tomcat_jdk]# vim tomcat.ini [program:tomcat]command=/usr/local/tomcat/bin/catalina.sh runprocess_name=%(program_name)sautostart=true

3.3编写supervisord.conf

[root@aliyun tomcat_jdk]# vim supervisord.conf ; Sample supervisor config file.[unix_; (the path to the socket file);chmod=0700 ; sockef file mode (default 0700);chown=nobody:nogroup ; socket file uid:gid owner;username=user ; (default is no username (open server));password=123 ; (default is no password (open server));[inet_; inet (TCP) server disabled by default;port=127.0.0.1:9001 ; (ip_address:port specifier, *:port for all iface);username=user ; (default is no username (open server));password=123 ; (default is no password (open server))[supervisord]logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)logfile_maxbytes=50MB ; (max main logfile bytes b4 rotation;default 50MB)logfile_backups=10 ; (num of main logfile rotation backups;default 10)loglevel=info ; (log level;default info; others: debug,warn,trace)pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)nodaemon=true ; (start in foreground if true;default false)minfds=1024 ; (min. avail startup file descriptors;default 1024)minprocs=200 ; (min. avail process descriptors;default 200);umask=022 ; (process file creation umask;default 022);user=chrism ; (default is current user, required if root);identifier=supervisor ; (supervisord identifier, default is 'supervisor');directory=/tmp ; (default is not to cd during start);nocleanup=true ; (don't clean up tempfiles at start;default false);childlogdir=/tmp ; ('AUTO' child log dir, default $TEMP);environment=KEY=value ; (key value pairs to add to environment);strip_ansi=false ; (strip ansi escape codes in logs; def. false); the below section must remain in the config file for RPC; (supervisorctl/web interface) to work, additional interfaces may be; added by defining them in separate rpcinterface: sections[rpcinterface:supervisor]supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface[supervisorctl]serverurl=unix:///var/run/supervisor/supervisor.sock ; use a unix:// URL for a unix socket;serverurl=; use an url to specify an inet socket;username=chris ; should be same as if set;password=123 ; should be same as if set;prompt=mysupervisor ; cmd line prompt (default "supervisor");history_file=~/.sc_history ; use readline history if available; The below sample program section shows all possible program subsection values,; create one or more 'real' program: sections to be able to control them under; supervisor.;[program:theprogramname];command=/bin/cat ; the program (relative uses PATH, can take args);process_name=%(program_name)s ; process_name expr (default %(program_name)s);numprocs=1 ; number of processes copies to start (def 1);directory=/tmp ; directory to cwd to before exec (def no cwd);umask=022 ; umask for process (default None);priority=999 ; the relative start priority (default 999);autostart=true ; start at supervisord start (default: true);autorestart=true ; retstart at unexpected quit (default: true);startsecs=10 ; number of secs prog must stay running (def. 1);startretries=3 ; max # of serial start failures (default 3);exitcodes=0,2 ; 'expected' exit codes for process (default 0,2);stopsignal=QUIT ; signal used to kill process (default TERM);stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10);user=chrism ; setuid to this UNIX account to run the program;redirect_stderr=true ; redirect proc stderr to stdout (default false);stdout_logfile=/a/path ; stdout log path, NONE for none; default AUTO;stdout_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stdout_logfile_backups=10 ; # of stdout logfile backups (default 10);stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0);stdout_events_enabled=false ; emit events on stdout writes (default false);stderr_logfile=/a/path ; stderr log path, NONE for none; default AUTO;stderr_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stderr_logfile_backups=10 ; # of stderr logfile backups (default 10);stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0);stderr_events_enabled=false ; emit events on stderr writes (default false);environment=A=1,B=2 ; process environment additions (def no adds);serverurl=AUTO ; override serverurl computation (childutils); The below sample eventlistener section shows all possible; eventlistener subsection values, create one or more 'real'; eventlistener: sections to be able to handle event notifications; sent by supervisor.;[eventlistener:theeventlistenername];command=/bin/eventlistener ; the program (relative uses PATH, can take args);process_name=%(program_name)s ; process_name expr (default %(program_name)s);numprocs=1 ; number of processes copies to start (def 1);events=EVENT ; event notif. types to subscribe to (req'd);buffer_size=10 ; event buffer queue size (default 10);directory=/tmp ; directory to cwd to before exec (def no cwd);umask=022 ; umask for process (default None);priority=-1 ; the relative start priority (default -1);autostart=true ; start at supervisord start (default: true);autorestart=unexpected ; restart at unexpected quit (default: unexpected);startsecs=10 ; number of secs prog must stay running (def. 1);startretries=3 ; max # of serial start failures (default 3);exitcodes=0,2 ; 'expected' exit codes for process (default 0,2);stopsignal=QUIT ; signal used to kill process (default TERM);stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10);user=chrism ; setuid to this UNIX account to run the program;redirect_stderr=true ; redirect proc stderr to stdout (default false);stdout_logfile=/a/path ; stdout log path, NONE for none; default AUTO;stdout_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stdout_logfile_backups=10 ; # of stdout logfile backups (default 10);stdout_events_enabled=false ; emit events on stdout writes (default false);stderr_logfile=/a/path ; stderr log path, NONE for none; default AUTO;stderr_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB);stderr_logfile_backups ; # of stderr logfile backups (default 10);stderr_events_enabled=false ; emit events on stderr writes (default false);environment=A=1,B=2 ; process environment additions;serverurl=AUTO ; override serverurl computation (childutils); The below sample group section shows all possible group values,; create one or more 'real' group: sections to create "heterogeneous"; process groups.;[group:thegroupname];programs=progname1,progname2 ; each refers to 'x' in [program:x] definitions;priority=999 ; the relative start priority (default 999); The [include] section can just contain the "files" setting. This; setting can list multiple files (separated by whitespace or; newlines). It can also contain wildcards. The filenames are; interpreted as relative to this file. Included files *cannot*; include files themselves.[include]files = supervisord.d/*.ini

3.4上传tomcat和jdk软件包

[root@aliyun tomcat_jdk]# ls -l总用量 190612-rw-r--r-- 1 root root 9653382 12月 12 21:00 apache-tomcat-8.5.37.tar.gz-rw-r--r-- 1 root root 890 1月 28 10:51 Dockerfile-rw-r--r-- 1 root root 185515842 9月 7 2017 jdk-8u144-linux-x64.tar.gz-rw-r--r-- 1 root root 7952 7月 1 2018 supervisord.conf-rw-r--r-- 1 root root 109 7月 1 2018 tomcat.ini

3.5开始构建

[root@aliyun tomcat_jdk]# docker build -t tomcat8.5-jdk1.8_v1 .

4.构建app镜像

[root@aliyun ~]# cd /home/docker/app/

4.1编写dockerfile

[root@aliyun app]# vim Dockerfile#Base ImageFROM tomcat8.5-jdk1.8_v1#MaintainerMAINTAINER CooLWo#Add WarADD memtest.war /usr/local/tomcat/webapps/

4.2上传war包

[root@aliyun app]# ls -l总用量 4-rw-r--r-- 1 root root 643 10月 23 2017 memtest.war

4.3开始构建

[root@aliyun app]# docker build -t app_v1 .

5.查看构建的所有容器

[root@aliyun ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEapp_v1 latest 1a6ebceea2df 2 minutes ago 755MBtomcat8.5-jdk1.8_v1 latest ea792a76dd7c 3 minutes ago 755MBcentos-ssh_v1 latest 69a4df948122 20 minutes ago 365MBcentos_v1 latest 35d42e6c3ff7 29 minutes ago 337MBcentos latest 1e1148e4cc2c 2 months ago 202MB

6.运行app容器

[root@aliyun docker]# docker run -d --hostname app1 -p 8888:8080 -p 2222:22 -v /home/docker/logs:/usr/local/tomcat/logs --name app1 app_v1

7.使用nsenter进入容器

[root@aliyun ~]# cd /home/docker/sh#下载nsenter命令[root@aliyun sh]# yum install -y util-linux#编写脚本[root@aliyun sh]# vim docker_in.sh#!/bin/bash# Use nsenter to access dockerdocker_in(){NAME_ID=$1PID=$(docker inspect -f "{{ .State.Pid }}" $NAME_ID) nsenter -t $PID -m -u -i -n -p}docker_in $1[root@aliyun sh]# cd /home/docker/sh/[root@aliyun sh]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES054e637eebba app_v1 "/usr/bin/supervisor…" 2 minutes ago Up 2 minutes 0.0.0.0:2222->22/tcp, 0.0.0.0:8888->8080/tcp app1#进入app容器[root@aliyun sh]# sh docker_in.sh 054e637eebba[root@app1 /]# supervisorctl statussshd RUNNING pid 8, uptime 0:00:20tomcat RUNNING pid 9, uptime 0:00:20

8.为镜像打标签

docker tag app_v1:latest 10.0.0.14/library/app_v1:v1docker tag tomcat8.5-jdk1.8_v1:latest 10.0.0.14/library/tomcat8.5-jdk1.8_v1:v1docker tag centos-ssh_v1:latest 10.0.0.14/library/centos-ssh_v1:v1docker tag centos_v1:latest 10.0.0.14/library/centos_v1:v1

作者：HaydenGuo

每一个前十年都想不到后十年我会演变成何等模样，可知人生无常，没有什么规律，没有什么必然。

只要我还对新鲜的知识、品格的改进、情感的扩张、有胃口，这日子就是值得度过的。

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