文章目录
一、什么是Tomcat?
Tomcat是Apache 软件基金会（Apache Software Foundation）的Jakarta 项目中的一个核心项目，由Apache、Sun 和其他一些公司及个人共同开发而成。因为Tomcat 技术先进、性能稳定，而且免费，因而深受Java 爱好者的喜爱并得到了部分软件开发商的认可，成为比较流行的Web 应用服务器。
二、Docker下安装Tomcat操作演示🎨
1??前期准备
#检查docker是否安装完成。
[root@docker ~]# docker version
Client: Docker Engine - Community
Version: 20.10.14
API version: 1.41
Go version: go1.16.15
Git commit: a224086
Built: Thu Mar 24 01:49:57 2022
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.14
API version: 1.41 (minimum version 1.12)
Go version: go1.16.15
Git commit: 87a90dc
Built: Thu Mar 24 01:48:24 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.5.11
GitCommit: 3df54a852345ae127d1fa3092b95168e4a88e2f8
runc:
Version: 1.0.3
GitCommit: v1.0.3-0-gf46b6ba
docker-init:
Version: 0.19.0
GitCommit: de40ad0
[root@docker ~]#
# 检查docker是否启动
systemctl status docker
2??下载tomcat镜像
# 搜索tomcat镜像
[root@docker ~]# docker search tomcat
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
tomcat Apache Tomcat is an open source implementati… 3317 [OK]
tomee Apache TomEE is an all-Apache Java EE certif… 96 [OK]
bitnami/tomcat Bitnami Tomcat Docker Image 44 [OK]
aallam/tomcat-mysql Debian, Oracle JDK, Tomcat & MySQL 12 [OK]
arm32v7/tomcat Apache Tomcat is an open source implementati… 11
arm64v8/tomcat Apache Tomcat is an open source implementati… 7
rightctrl/tomcat CentOS , Oracle Java, tomcat application ssl… 7 [OK]
maluuba/tomcat7-java8 Tomcat7 with java8. 6
amd64/tomcat Apache Tomcat is an open source implementati… 4
tomcat2111/pisignage-server PiSignage Server 3 [OK]
jelastic/tomcat An image of the Tomcat Java application serv… 3
cfje/tomcat-resource Tomcat Concourse Resource 2
oobsri/tomcat8 Testing CI Jobs with different names. 2
ppc64le/tomcat Apache Tomcat is an open source implementati… 1
tomcatling/jupyterhub_aws 1
appsvc/tomcat 1
chenyufeng/tomcat-centos tomcat基于centos6的镜像 1 [OK]
s390x/tomcat Apache Tomcat is an open source implementati… 0
tomcatengineering/pg_backup_rotated Clone of martianrock/pg_backup_rotated but w… 0
secoresearch/tomcat-varnish Tomcat and Varnish 5.0 0 [OK]
tomcat2111/papercut-mf PaperCut MF Application Server 0
softwareplant/tomcat Tomcat images for jira-cloud testing 0 [OK]
tomcat2111/phpredisadmin This is a Docker image for phpredisadmin 0 [OK]
tomcat0823/auto1 0
tomcat2111/bitbucket-pipelines-elasticsearch Elasticsearch for Bitbucket's Pipelines 0
[root@docker ~]#
# 默认下载官方最新tomcat镜像
[root@docker ~]# docker pull tomcat
Using default tag: latest
latest: Pulling from library/tomcat
0e29546d541c: Pull complete
9b829c73b52b: Pull complete
cb5b7ae36172: Pull complete
6494e4811622: Pull complete
668f6fcc5fa5: Pull complete
dc120c3e0290: Pull complete
8f7c0eebb7b1: Pull complete
77b694f83996: Pull complete
0f611256ec3a: Pull complete
4f25def12f23: Pull complete
Digest: sha256:9dee185c3b161cdfede1f5e35e8b56ebc9de88ed3a79526939701f3537a52324
Status: Downloaded newer image for tomcat:latest
docker.io/library/tomcat:latest
# 查看下载的tomcat镜像
[root@docker ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
tomcat latest fb5657adc892 4 months ago 680MB
[root@docker ~]#
# 查看tomcat镜像详细信息
[root@docker ~]# docker inspect fb5657adc892
[
{
"Id": "sha256:fb5657adc892ed15910445588404c798b57f741e9921ff3c1f1abe01dbb56906",
"RepoTags": [
"tomcat:latest"
],
"RepoDigests": [
"tomcat@sha256:9dee185c3b161cdfede1f5e35e8b56ebc9de88ed3a79526939701f3537a52324"
],
"Parent": "",
"Comment": "",
"Created": "2021-12-22T17:07:13.333084424Z",
"Container": "de0900b3a6caf902ccdaa1c7871d244e29978119ad8a1cce799cf47f1717b679",
"ContainerConfig": {
"Hostname": "de0900b3a6ca",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"8080/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/tomcat/bin:/usr/local/openjdk-11/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"JAVA_HOME=/usr/local/openjdk-11",
"LANG=C.UTF-8",
"JAVA_VERSION=11.0.13",
"CATALINA_HOME=/usr/local/tomcat",
"TOMCAT_NATIVE_LIBDIR=/usr/local/tomcat/native-jni-lib",
"LD_LIBRARY_PATH=/usr/local/tomcat/native-jni-lib",
"GPG_KEYS=A9C5DF4D22E99998D9875A5110C01C5A2F6059E7",
"TOMCAT_MAJOR=10",
"TOMCAT_VERSION=10.0.14",
"TOMCAT_SHA512=c2d2ad5ed17f7284e3aac5415774a8ef35434f14dbd9a87bc7230d8bfdbe9aa1258b97a59fa5c4030e4c973e4d93d29d20e40b6254347dbb66fae269ff4a61a5"
],
"Cmd": [
"/bin/sh",
"-c",
"#(nop) ",
"CMD [\"catalina.sh\" \"run\"]"
],
"Image": "sha256:6e2683bf6f13f0050833b6807871b4980142835747139a2c2ae91b274787e399",
"Volumes": null,
"WorkingDir": "/usr/local/tomcat",
"Entrypoint": null,
"OnBuild": null,
"Labels": {}
},
"DockerVersion": "20.10.7",
"Author": "",
"Config": {
"Hostname": "",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"8080/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/tomcat/bin:/usr/local/openjdk-11/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"JAVA_HOME=/usr/local/openjdk-11",
"LANG=C.UTF-8",
"JAVA_VERSION=11.0.13",
"CATALINA_HOME=/usr/local/tomcat",
"TOMCAT_NATIVE_LIBDIR=/usr/local/tomcat/native-jni-lib",
"LD_LIBRARY_PATH=/usr/local/tomcat/native-jni-lib",
"GPG_KEYS=A9C5DF4D22E99998D9875A5110C01C5A2F6059E7",
"TOMCAT_MAJOR=10",
"TOMCAT_VERSION=10.0.14",
"TOMCAT_SHA512=c2d2ad5ed17f7284e3aac5415774a8ef35434f14dbd9a87bc7230d8bfdbe9aa1258b97a59fa5c4030e4c973e4d93d29d20e40b6254347dbb66fae269ff4a61a5"
],
"Cmd": [
"catalina.sh",
"run"
],
"Image": "sha256:6e2683bf6f13f0050833b6807871b4980142835747139a2c2ae91b274787e399",
"Volumes": null,
"WorkingDir": "/usr/local/tomcat",
"Entrypoint": null,
"OnBuild": null,
"Labels": null
},
"Architecture": "amd64",
"Os": "linux",
"Size": 679618222,
"VirtualSize": 679618222,
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/17750c528974cc2506240a6fc097828a654b5c95254d04351888cc7c37616e8d/diff:/var/lib/docker/overlay2/2baff1b0a90a8a32b6096919dfe7905e80a10644a0e591a235bbf9dfb1ee935f/diff:/var/lib/docker/overlay2/57e4f3246f56478dec6001d04e2a194482af11bbe0cf1fff9bf6b8e80692d80b/diff:/var/lib/docker/overlay2/9c61f3a83975026b30fe67c366749cdc94dce6f8631bdf682b30c241738f5877/diff:/var/lib/docker/overlay2/2cce0104900d2801c26a4fc435b373956d73f7c879f577fe4dee76c5b4e5edf6/diff:/var/lib/docker/overlay2/20e1755fe858a6361dd98e0442356614957f69771bef40fede9ba92fd1f4fe8c/diff:/var/lib/docker/overlay2/6b2303e71edfa4940ad9eb735327bb7dff5a9c1a1f64aab39ad4be0010e8cdc1/diff:/var/lib/docker/overlay2/4fd1c7225ffdf29892025b5bbcffd78c7c30354d645ce060e9dbed6aacd76509/diff:/var/lib/docker/overlay2/7f98cf673a67095f92f9811fa0a1b1433494d4e643bf5ea64c56296d0f64827b/diff",
"MergedDir": "/var/lib/docker/overlay2/63e3094912356d6fa8ae806060288efe002b8fd505d7c8c13be6b007c23ed74d/merged",
"UpperDir": "/var/lib/docker/overlay2/63e3094912356d6fa8ae806060288efe002b8fd505d7c8c13be6b007c23ed74d/diff",
"WorkDir": "/var/lib/docker/overlay2/63e3094912356d6fa8ae806060288efe002b8fd505d7c8c13be6b007c23ed74d/work"
},
"Name": "overlay2"
},
"RootFS": {
"Type": "layers",
"Layers": [
"sha256:11936051f93baf5a4fb090a8fa0999309b8173556f7826598e235e8a82127bce",
"sha256:31892cc314cb1993ba1b8eb5f3002c4e9f099a9237af0d03d1893c6fcc559aab",
"sha256:8bf42db0de72f74f4ef0c1d1743f5d54efc3491ee38f4af6d914a6032148b78e",
"sha256:26a504e63be4c63395f216d70b1b8af52263a5289908df8e96a0e7c840813adc",
"sha256:f9e18e59a5651609a1503ac17dcfc05856b5bea21e41595828471f02ad56a225",
"sha256:832e177bb5008934e2f5ed723247c04e1dd220d59a90ce32000b7c22bd9d9b54",
"sha256:3bb5258f46d2a511ddca2a4ec8f9091d676a116830a7f336815f02c4b34dbb23",
"sha256:59c516e5b6fafa2e6b63d76492702371ca008ade6e37d931089fe368385041a0",
"sha256:bd2befca2f7ef51f03b757caab549cc040a36143f3b7e3dab94fb308322f2953",
"sha256:3e2ed6847c7a081bd90ab8805efcb39a2933a807627eb7a4016728f881430f5f"
]
},
"Metadata": {
"LastTagTime": "0001-01-01T00:00:00Z"
}
}
]
[root@docker ~]#
3??启动tomcat
# 启动tomcat
[root@docker ~]# docker run -d -p 3366:8080 --name tomcat-xybdiy tomcat
c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e
###############################
# 参数解释：
# -p ： 宿主机端口:容器内部端口
# -d : 代表后台运行
# --name : 给容器命名
###############################
# 查看容器启动状态信息
[root@docker ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c0b92c78776b tomcat "catalina.sh run" 2 minutes ago Up 2 minutes 0.0.0.0:3366->8080/tcp, :::3366->8080/tcp tomcat-xybdiy
# 查看tomcat容器详细信息
[root@docker ~]# docker inspect tomcat-xybdiy
[
{
"Id": "c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e",
"Created": "2022-05-06T15:58:32.234116782Z",
"Path": "catalina.sh",
"Args": [
"run"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 12728,
"ExitCode": 0,
"Error": "",
"StartedAt": "2022-05-06T15:58:32.992454668Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:fb5657adc892ed15910445588404c798b57f741e9921ff3c1f1abe01dbb56906",
"ResolvConfPath": "/var/lib/docker/containers/c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e/hostname",
"HostsPath": "/var/lib/docker/containers/c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e/hosts",
"LogPath": "/var/lib/docker/containers/c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e/c0b92c78776bdeea0cad131b36e58931e0ffc4b59d08751e8a05a4a3becff92e-json.log",
"Name": "/tomcat-xybdiy",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": null,
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "default",
"PortBindings": {
"8080/tcp": [
{
"HostIp": "",
"HostPort": "3366"
}
]
},
"RestartPolicy": {
"Name": "no",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"CgroupnsMode": "host",
"Dns": [],
"DnsOptions": [],
"DnsSearch": [],
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "private",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": null,
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 67108864,
"Runtime": "runc",
"ConsoleSize": [
0,
0
],
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"NanoCpus": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": [],
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": [],
"DeviceCgroupRules": null,
"DeviceRequests": null,
"KernelMemory": 0,
"KernelMemoryTCP": 0,
"MemoryReservation": 0,
"MemorySwap": 0,
"MemorySwappiness": null,
"OomKillDisable": false,
"PidsLimit": null,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0,
"MaskedPaths": [
"/proc/asound",
"/proc/acpi",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/proc/scsi",
"/sys/firmware"
],
"ReadonlyPaths": [
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger"
]
},
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/5fe647bac2e4fbc4c944260bb8c177c05165c53cf170ff4c2cb07b1e589db435-init/diff:/var/lib/docker/overlay2/63e3094912356d6fa8ae806060288efe002b8fd505d7c8c13be6b007c23ed74d/diff:/var/lib/docker/overlay2/17750c528974cc2506240a6fc097828a654b5c95254d04351888cc7c37616e8d/diff:/var/lib/docker/overlay2/2baff1b0a90a8a32b6096919dfe7905e80a10644a0e591a235bbf9dfb1ee935f/diff:/var/lib/docker/overlay2/57e4f3246f56478dec6001d04e2a194482af11bbe0cf1fff9bf6b8e80692d80b/diff:/var/lib/docker/overlay2/9c61f3a83975026b30fe67c366749cdc94dce6f8631bdf682b30c241738f5877/diff:/var/lib/docker/overlay2/2cce0104900d2801c26a4fc435b373956d73f7c879f577fe4dee76c5b4e5edf6/diff:/var/lib/docker/overlay2/20e1755fe858a6361dd98e0442356614957f69771bef40fede9ba92fd1f4fe8c/diff:/var/lib/docker/overlay2/6b2303e71edfa4940ad9eb735327bb7dff5a9c1a1f64aab39ad4be0010e8cdc1/diff:/var/lib/docker/overlay2/4fd1c7225ffdf29892025b5bbcffd78c7c30354d645ce060e9dbed6aacd76509/diff:/var/lib/docker/overlay2/7f98cf673a67095f92f9811fa0a1b1433494d4e643bf5ea64c56296d0f64827b/diff",
"MergedDir": "/var/lib/docker/overlay2/5fe647bac2e4fbc4c944260bb8c177c05165c53cf170ff4c2cb07b1e589db435/merged",
"UpperDir": "/var/lib/docker/overlay2/5fe647bac2e4fbc4c944260bb8c177c05165c53cf170ff4c2cb07b1e589db435/diff",
"WorkDir": "/var/lib/docker/overlay2/5fe647bac2e4fbc4c944260bb8c177c05165c53cf170ff4c2cb07b1e589db435/work"
},
"Name": "overlay2"
},
"Mounts": [],
"Config": {
"Hostname": "c0b92c78776b",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"8080/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/tomcat/bin:/usr/local/openjdk-11/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"JAVA_HOME=/usr/local/openjdk-11",
"LANG=C.UTF-8",
"JAVA_VERSION=11.0.13",
"CATALINA_HOME=/usr/local/tomcat",
"TOMCAT_NATIVE_LIBDIR=/usr/local/tomcat/native-jni-lib",
"LD_LIBRARY_PATH=/usr/local/tomcat/native-jni-lib",
"GPG_KEYS=A9C5DF4D22E99998D9875A5110C01C5A2F6059E7",
"TOMCAT_MAJOR=10",
"TOMCAT_VERSION=10.0.14",
"TOMCAT_SHA512=c2d2ad5ed17f7284e3aac5415774a8ef35434f14dbd9a87bc7230d8bfdbe9aa1258b97a59fa5c4030e4c973e4d93d29d20e40b6254347dbb66fae269ff4a61a5"
],
"Cmd": [
"catalina.sh",
"run"
],
"Image": "tomcat",
"Volumes": null,
"WorkingDir": "/usr/local/tomcat",
"Entrypoint": null,
"OnBuild": null,
"Labels": {}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "10cf9b877928ac69f7252b07f62bdff05bc91c4d292ce08c127b9db0f2416dbe",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"8080/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "3366"
},
{
"HostIp": "::",
"HostPort": "3366"
}
]
},
"SandboxKey": "/var/run/docker/netns/10cf9b877928",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "c870fe581d49fb5a1ed0ace2730c5338288a5ce805593fed578d9f384b48c93f",
"Gateway": "172.17.0.1",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"MacAddress": "02:42:ac:11:00:02",
"Networks": {
"bridge": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "f92a9c592ee698e109ae6368be86f863f91d3ac013655a88b0c194549dd8e0fb",
"EndpointID": "c870fe581d49fb5a1ed0ace2730c5338288a5ce805593fed578d9f384b48c93f",
"Gateway": "172.17.0.1",
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:11:00:02",
"DriverOpts": null
}
}
}
}
]
[root@docker ~]#
4??测试访问报错
# 测试访问
# 打开浏览器输入：IP地址:映射端口。本例为http://192.168.200.66:3366/
# 发生"HTTP状态404"报错信息，表示服务器未得到请求，没有找到请求资源。
5??修改配置参数
# 查看Tomcat容器
docker ps
# 进入Tomcat容器
[root@docker ~]# docker exec -it tomcat-xybdiy /bin/bash
# 查看文件
root@c0b92c78776b:/usr/local/tomcat# ls
BUILDING.txt CONTRIBUTING.md LICENSE NOTICE README.md RELEASE-NOTES RUNNING.txt bin conf lib logs native-jni-lib temp webapps webapps.dist work
# 查看webapps目录
root@c0b92c78776b:/usr/local/tomcat# ls -l webapps
total 0
# 查看webapps.dist目录
root@c0b92c78776b:/usr/local/tomcat# ls -l webapps.dist/
total 4
drwxr-xr-x 3 root root 223 Dec 22 17:06 ROOT
drwxr-xr-x 15 root root 4096 Dec 22 17:06 docs
drwxr-xr-x 7 root root 99 Dec 22 17:06 examples
drwxr-xr-x 6 root root 79 Dec 22 17:06 host-manager
drwxr-xr-x 6 root root 114 Dec 22 17:06 manager
# 拷贝 webapps.dist目录下的文件到webapps目录下
root@c0b92c78776b:/usr/local/tomcat# cp -r webapps.dist/* webapps/
# 查看webapps目录
root@c0b92c78776b:/usr/local/tomcat# ls -l webapps
total 4
drwxr-xr-x 3 root root 223 May 6 16:08 ROOT
drwxr-xr-x 15 root root 4096 May 6 16:08 docs
drwxr-xr-x 7 root root 99 May 6 16:08 examples
drwxr-xr-x 6 root root 79 May 6 16:08 host-manager
drwxr-xr-x 6 root root 114 May 6 16:08 manager
root@c0b92c78776b:/usr/local/tomcat#
# 退出容器
root@c0b92c78776b:/usr/local/tomcat# exit
exit
6??重新测试访问
测试访问成功。
