文章目錄

• 構建容器服務
• 構建sshd容器服務步驟
• 構建systemctl容器服務步驟
• • 容器開啟ssh
• 配置systmctl
• docker容器中配置nginx
• docker容器中配置tomcat
• docker容器中配置mysql
• • 設置遠程連接

構建容器服務

構建sshd容器服務步驟

sshd為secure shell的簡稱，可以通過網絡在主機中開
機shell的服務

操作步驟

下載基礎鏡像

建立工作目錄

創建并編寫Dockerfile文件

生成鏡像

啟動容器

構建systemctl容器服務步驟

systemctl是管制服務的主要工具，它整合了chkconfig與
service功能于一體

操作步驟

建立工作目錄

創建并編寫Dockerfile文件

生成鏡像

啟動容器

驗證systemctl

容器開啟ssh

創建一個目錄

[root@localhost ~]# mkdir sshd [root@localhost ~]# cd sshd/

編寫docker的鏡像文件

[root@localhost sshd]# vim Dockerfile FROM centos:7 MAINTAINER The CentOS projest <cloud-centos> RUN yum -y update RUN yum -y install openssh* net-tools lsof telnet passwd RUN echo '123456' | passwd --stdin root RUN sed -i 's/UsePAM yes/UsePAM no/g' /etc/ssh/sshd_config RUN ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key RUN sed -i '/^session\s\+required\s\+pam_loginuid.so/s/^/#/' /etc/pam.d/sshd RUN mkdir -p /root/.ssh && chown root.root /root && chmod 700 /root/.ssh EXPOSE 22 CMD ["/usr/sbin/sshd","-D" ]

執行腳本生成鏡像

[root@localhost sshd]# docker build -t sshd:new .

開啟容器

[root@localhost sshd]# docker run -d -P sshd:new

查看端口

[root@localhost sshd]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ecd8495ace38 sshd:new "/usr/sbin/sshd -D" 17 seconds ago Up 15 seconds 0.0.0.0:32768->22/tcp affectionate_roentgen

啟動容器并修改root密碼

[root@localhost sshd]# ssh localhost -p 32768 Are you sure you want to continue connecting (yes/no)? yes root@localhost's password: 123456 [root@ecd8495ace38 ~]# 進入容器

安裝已經完成

配置systmctl

因為我們開啟關閉服務很麻煩所應需要systemctl來管理

[root@ecd8495ace38 /]# systemctl status sshd Failed to get D-Bus connection: Operation not permitted

編寫docker的鏡像文件

[root@localhost systemctl]# vim Dockerfile FROM sshd:new ENV container docker RUN (cd /lib/systemd/system/sysinit.target.wants/;for i in *;do [ $i == \ systemctl-tmpfiles-setup.service ] || rm -f $i; done); \ rm -f /lib/systemd/system/multi-user.target.wants/*; \ rm -f /etc/systemd/system/*.wants/*; \ rm -f /lib/systemd/system/local-fs.target.wants/*; \ rm -f /lib/systemd/system/sockets.target.wants/*udev*; \ rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \ rm -f /lib/systemd/system/basic.target.wants/*; \ rm -f /lib/systemd/system/anacoda.target.wants/*; VOLUME [ "/sys/fs/cgroup" ] CMD ["/usr/sbin/init"]

執行腳本生成鏡像

docker build -t systemd:new .

root用戶設置（不降級操作）

docker run --privileged -ti -v /sys/fs/cgroup:/sys/fs/cgroup:ro systemd:new /sbin/init &

//privateged container內的root 擁有真正的權限。否則，container內的root只是外部的一個普通用戶權限。

開啟服務

查看端口號

[root@localhost systemctl]# docker ps -a ecd8495ace38 sshd:new "/usr/sbin/sshd -D" 25 minutes ago Up 25 minutes 0.0.0.0:32768->22/tcp affectionate_roentgen

開啟服務

[root@localhost systemctl]# docker exec -it 9d8bd74da0e5 bash

已經可以管理sshd服務了

docker容器中配置nginx

創建文件

mkdir nginx cd nginx

編寫docker的鏡像文件

FROM centos:7 MAINTAINER this is nginx RUN yum -y update RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make RUN useradd -M -s /sbin/nologin nginx ADD nginx-1.12.0.tar.gz /usr/local/src WORKDIR /usr/local/src WORKDIR nginx-1.12.0 RUN ./configure \ --prefix=/usr/local/nginx \ --user=nginx \ --group=nginx \ --with-http_stub_status_module && make && make install ENV PATH /usr/local/nginx/sbin:$PATH EXPOSE 80 EXPOSE 443 RUN echo "daemon off;">>/usr/local/nginx/conf/nginx.conf ADD run.sh /run.sh RUN chmod 755 /run.sh CMD ["/run.sh"]

解釋：

[root@localhost nginx]# vim Dockerfile #基于基礎鏡像 FROM centos:7 #用戶信息 MAINTAINER this is nginx image #添加環境包 RUN yum -y update RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make RUN useradd -M -s /sbin/nologin nginx #下載nginx軟件包 ADD nginx-1.12.0.tar.gz /usr/local/src WORKDIR /usr/local/src #指定工作目錄 WORKDIR nginx-1.12.0 RUN ./configure \ --prefix=/usr/local/nginx \ --user=nginx \ --group=nginx \ --with-http_stub_status_module && make && make install ENV PATH /usr/local/nginx/sbin:$PATH #指定httphehttpd端口 EXPOSE 80 EXPOSE 443 RUN echo "daemon off;" >>/usr/local/nginx/conf/nginx.conf #添加宿主中run.sh到容器中 ADD run.sh /run.sh RUN chmod 755 /run.sh CMD ["/run.sh"] [root@localhost nginx]# vim run.sh #!/bin/bash /usr/local/nginx/sbin/nginx

執行腳本生成鏡像

[root@localhost nginx]# docker build -t nginx:new .

開啟容器

[root@localhost nginx]# docker run -d -P nginx:new

查是否允許

[root@localhost nginx]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 92ddc2ac4dd3 nginx:new "/run.sh" 5 seconds ago Up 3 seconds 0.0.0.0:32769->80/tcp, 0.0.0.0:32768->443/tcp distracted_wright

在游覽器查看容器中的nginx

docker容器中配置tomcat

mkdir tomcat cd tomcat [root@localhost tomcat]# vim Dockerfile FROM centos:7 MAINTAINER tomcat image <zhangxue> ADD jdk-8u91-linux-x64.tar.gz /usr/local/ WORKDIR /usr/local/ RUN mv jdk1.8.0_91 /usr/local/java ENV JAVA_HOME /usr/local/java ENV JAVA_BIN /usr/local/java/bin ENV JRE_HOME /usr/local/java/jre ENV PATH $PATH:/usr/local/java/bin:/usr/local/java/jre/bin ENV CLASSPATH /usr/local/java/jre/bin:/usr/local/java/lib:/usr/local/java/jre/lib/charsets.jar ADD apache-tomcat-8.5.16.tar.gz /usr/local/ WORKDIR /usr/local/ RUN mv apache-tomcat-8.5.16 /usr/local/tomcat8 EXPOSE 8080 #CMD ["/usr/local/tomcat8/bin/catalina.sh","run"] ENTRYPOINT ["/usr/local/tomcat8/bin/catalina.sh","run"]

啟動腳本

[root@localhost tomcat]# docker build -t tomcat:centos .

開啟服務

[root@localhost tomcat]#docker run -d --name tomcat01 -p 1234:8080 tomcat:centos

查看端口

[root@localhost tomcat]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES b52eeb75f64a tomcat:centos "/usr/local/tomcat8/…" 7 seconds ago Up 5 seconds 0.0.0.0:1234->8080/tcp tomcat01

在游覽器中查看端口是否開啟tomcat

docker容器中配置mysql

配置腳本

[root@localhost mysql]# mkdir mysql [root@localhost mysql]# cd mysql/ [root@localhost mysql]# vim Dockerfile FROM centos:7 ADD mysql-5.7.17.tar.gz /opt/ ADD boost_1_59_0.tar.gz /usr/local/ WORKDIR /usr/local/ RUN mv boost_1_59_0 boost RUN yum -y update RUN yum -y install ncurses ncurses-devel bison cmake gcc gcc-c++ make RUN useradd -s /sbin/nologin mysql WORKDIR /opt/mysql-5.7.17/ RUN cmake \ -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \ -DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \ -DSYSCONFDIR=/etc \ -DSYSTEMD_PID_DIR=/usr/local/mysql \ -DDEFAULT_CHARSET=utf8 \ -DDEFAULT_COLLATION=utf8_general_ci \ -DWITH_INNOBASE_STORAGE_ENGINE=1 \ -DWITH_ARCHIVE_STORAGE_ENGINE=1 \ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \ -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \ -DMYSQL_DATADIR=/usr/local/mysql/data \ -DWITH_BOOST=/usr/local/boost \ -DWITH_SYSTEMD=1 RUN make && make install RUN chown -R mysql.mysql /usr/local/mysql ADD my.cnf /etc/ ENV PATH /usr/local/mysql/bin:/usr/local/mysql/lib:$PATH WORKDIR /usr/local/mysql/ RUN bin/mysqld \ --initialize-insecure \ --user=mysql \ --basedir=/usr/local/mysql \ --datadir=/usr/local/mysql/data RUN cp usr/lib/systemd/system/mysqld.service /lib/systemd/system/ EXPOSE 3306 ADD run.sh /run.sh RUN chmod +x /run.sh CMD ["/run.sh"] [root@localhost mysql]# vim my.cnf [client] port = 3306 default-character-set=utf8 socket = /usr/local/mysql/mysql.sock[mysql] port = 3306 default-character-set=utf8 socket=/usr/local/mysql/mysql.sock[mysqld] user = mysql basedir = /usr/local/mysql datadir=/usr/local/mysql/data port = 3306 character_set_server=utf8 pid-file = /usr/local/mysql/mysqld.pid socket = /usr/local/mysql/mysql.sock server-id = 1sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES [root@localhost mysql]# vim run.sh #!/bin/bash /usr/local/mysql/bin/mysqld

啟動腳本

[root@localhost mysql]# docker build -t mysql:centos .

進入mysql服務器

[root@localhost mysql]# docker exec -it f0e5fb4b2493 /bin/bash

設置遠程連接

mysql> grant all privileges on *.* to 'root'@'%' identified by 'abc123';mysql> grant all privileges on *.* to 'root'@'localhost' identified by 'abc123';mysql> flush privileges

開一臺另終端192.168.136.81連接這臺docker中的mysql
安裝mysql客戶端

[root@localhost tools]# yum install mariadb* -y

連接對方mysql

[root@localhost tools]# mysql -h 192.168.136.90 -u root -P 32768 -p

這里的32768是對面的mysql端口號

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