docker 安裝 tomcat

查詢伺服器的 tomcat 資訊

[[email protected] ~]# docker search tomcat 
NAME                                  DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
tomcat                                Apache Tomcat is an open source implementati…   2207                [
 
OK]                
tomee                                 Apache TomEE is an all-Apache Java EE certif…   59                  [OK]                
dordoka/tomcat                        Ubuntu 14.04, Oracle JDK 8 and Tomcat 8 base…   50                                      [OK]
davidcaste/alpine-tomcat              Apache Tomcat 7/8 using Oracle Java 7/8 with…   31                                      [
 
OK]
bitnami/tomcat                        Bitnami Tomcat Docker Image                     27                                      [OK]
consol/tomcat-7.0                     Tomcat 7.0.57, 8080, "admin/admin"              16                                      [OK]
cloudesire/tomcat                     Tomcat server, 6/7/8                            15                                      [
 
OK]
tutum/tomcat                          Base docker image to run a Tomcat applicatio…   11                                      
meirwa/spring-boot-tomcat-mysql-app   a sample spring-boot app using tomcat and My…   10                                      [OK]
aallam/tomcat-mysql                   Debian, Oracle JDK, Tomcat & MySQL              9                                       [OK]
jeanblanchard/tomcat                  Minimal Docker image with Apache Tomcat         8                                       
arm32v7/tomcat                        Apache Tomcat is an open source implementati…   6                                       
rightctrl/tomcat                      CentOS , Oracle Java, tomcat application ssl…   3                                       [OK]
maluuba/tomcat7-java8                 Tomcat7 with java8.                             3                                       
arm64v8/tomcat                        Apache Tomcat is an open source implementati…   2                                       
fabric8/tomcat-8                      Fabric8 Tomcat 8 Image                          2                                       [OK]
amd64/tomcat                          Apache Tomcat is an open source implementati…   2                                       
99taxis/tomcat7                       Tomcat7                                         1                                       [OK]
primetoninc/tomcat                    Apache tomcat 8.5, 8.0, 7.0                     1                                       [OK]
swisstopo/service-print-tomcat        backend tomcat for service-print "the true, …   0                                       
picoded/tomcat7                       tomcat7 with jre8 and MANAGER_USER / MANAGER…   0                                       [OK]
oobsri/tomcat8                        Testing CI Jobs with different names.           0                                       
cfje/tomcat-resource                  Tomcat Concourse Resource                       0                                       
jelastic/tomcat                       An image of the Tomcat Java application serv…   0                                       
s390x/tomcat                          Apache Tomcat is an open source implementati…   0                                       
[[email protected] ~]#

下載官方的 tomcat 映象

[[email protected] ~]# docker pull tomcat
Using default tag: latest
latest: Pulling from library/tomcat
54f7e8ac135a: Pull complete 
d6341e30912f: Pull complete 
087a57faf949: Pull complete 
95065f220961: Pull complete 
0887630ce576: Pull complete 
c375d1959fab: Pull complete 
e00a5e6055cc: Pull complete 
8319f5fb56cf: Pull complete 
258c74eb25ab: Pull complete 
6eb86d11d371: Pull complete 
adb5a4a6adf5: Pull complete 
4685b434f297: Pull complete 
Digest: sha256:e394c2f94eee344300e68d7183f3f19d272316f9691b280ac0e3911ea610e590
Status: Downloaded newer image for tomcat:latest
[[email protected] ~]# 

檢視 docker 所有的映象

[[email protected] ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
runoob/centos       6.7                 be5e1d8bd085        8 days ago          191MB
runoob/centos       dev                 be5e1d8bd085        8 days ago          191MB
runoob/ubuntu       v2                  b14eca5fdbcb        8 days ago          137MB
ubuntu              14.04               f17b6a61de28        2 weeks ago         188MB
tomcat              latest              78b258e36eed        2 weeks ago         463MB
httpd               latest              2a51bb06dc8b        3 weeks ago         132MB
zookeeper           3.4.13              f336949ce7a1        6 weeks ago         148MB
mysql               5.7.23              1b30b36ae96a        7 weeks ago         372MB
centos              6.7                 192ad0341c8b        8 weeks ago         191MB
centos              latest              75835a67d134        8 weeks ago         200MB
hello-world         latest              4ab4c602aa5e        3 months ago        1.84kB
ubuntu              15.10               9b9cb95443b5        2 years ago         137MB
training/webapp     latest              6fae60ef3446        3 years ago         349MB
[[email protected] ~]# 

使用映象啟動 tomcat 容器

1、檢視 docker 中 tomcat 的路徑

• 方法一：檢視 docker hub 上的 tomcat 的官方說明
• 方法二：測試

這裡介紹測試來檢視 docker 中 tomcat 的路徑：

# 建立一個tomcat容器，這個容器是臨時的
docker run --name tomcat-1 -P -d tomcat

說明：

• –name tomcat-1 ：定義容器的名字為 tomcat-1
• -P ：把容器的埠隨機對映到本機的一個埠
• -d ：後臺執行容器
• tomcat ：映象的名字

檢視當前正在執行的容器：

[[email protected] ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                        NAMES
d4a55582ba1c        tomcat              "catalina.sh run"        5 seconds ago       Up 5 seconds        0.0.0.0:32768->8080/tcp                      tomcat-1
8177759ce014        zookeeper:3.4.13    "/docker-entrypoint.…"   8 days ago          Up About an hour    2888/tcp, 0.0.0.0:2181->2181/tcp, 3888/tcp   zookeeper-1
88a992988696        mysql:5.7.23        "docker-entrypoint.s…"   8 days ago          Up About an hour    0.0.0.0:3306->3306/tcp, 33060/tcp            mysql-1
[[email protected] ~]# 

說明：

• 0.0.0.0:32768->8080/tcp ：docker 中的 8080 埠對映到了本機的 32768 埠
  測試：訪問：http://192.168.25.11:32768/
  
  tomcat 已經執行起來了，現在就進去容器內部，查詢容器地址：

[[email protected] ~]# docker exec -it tomcat-1 /bin/bash
[email protected]:/usr/local/tomcat# pwd
/usr/local/tomcat
[email protected]:/usr/local/tomcat# ls
BUILDING.txt  CONTRIBUTING.md  LICENSE  NOTICE  README.md  RELEASE-NOTES  RUNNING.txt  bin  conf  include  lib  logs  native-jni-lib  temp  webapps  work
[email protected]:/usr/local/tomcat# 

說明：

• -it ：是進入互動模式
• tomat-1 ：是該容器的名字

該容器地址為：/usr/local/tomcat

把 docker 中 tomcat 的 conf 、 webapps 、 logs 這三個目錄拷貝到本機：

[[email protected] ~]# docker cp tomcat-1:/usr/local/tomcat/conf /my-docker/my-tomcat/
[[email protected] ~]# docker cp tomcat-1:/usr/local/tomcat/webapps /my-docker/my-tomcat/
[[email protected] ~]# docker cp tomcat-1:/usr/local/tomcat/logs /my-docker/my-tomcat/

說明：

• tomat-1 ： 容器的名字
• /usr/local/tomcat/conf ： 容器中 tomcat 的 conf 目錄
• /my-docker/my-tomcat/ ： 本機準備存放的目錄

現在我本機的my-tomcat資料夾裡有webapps conf logs 這三個目錄了。

把之前的 tomcat-1 容器刪掉：

• 停掉容器：docker stop tomcat-1
• 刪除容器：docker rm tomcat-1

通過對映來啟動 tomcat

[[email protected] ~]# docker run -P --name tomcat-1 -v /my-docker/my-tomcat/webapps:/usr/local/tomcat/webapps -v /my-docker/my-tomcat/conf:/usr/local/tomcat/conf -v /my-docker/my-tomcat/logs:/usr/local/tomcat/logs -d tomcat
775aa522589151df6c2ff5825840feaa91d746a47fea2a2b71a53ad68aeba5de
[[email protected] ~]# 

說明：

• -v 把 docker 中的 webapps 、 logs 、 conf 目錄分別對映到本機的 tomcat-1 中對應的目錄中

對映有什麼好處：
就是把 war 包扔到本機的 /my-docker/my-tomcat/webapps 中就可以了 ，docker 自動會部署到 tomcat 中的。修改了本機 conf 中的配置檔案，docker 中的配置檔案也會立即生效。