Wsrtjtyk

I'm working on a use case to create a Docker container for an apache server for a CMS application.

Below is the folder structure for the docket container.

apache-rproxy-docker (folder)

  -docker-compose.yml

  - httpd (folder)

     - Dockerfile

     - httpd.conf

docker-compose.yml

version: '2.1'



services:

  apache:

    build: httpd/

    ports:

      - "80:80"

    networks:

      - my_network

    restart: always



networks:

  my_network:

    driver: bridge

Dockerfile

FROM httpd:2.4

COPY ./httpd.conf /usr/local/apache2/conf/httpd.conf

httpd.conf

Listen 80



ServerName localhost:80

ServerAdmin admin@localhost



ErrorLog logs/error.log

LogLevel error



###

# Note that the following LoadModule lines only represent the minimum 'Web-Developer' Suite configuration.

#

# Also note that some of the following LoadModule lines, which are commented out, are still loaded under…

# confSuite-extra*.conf

# confextra*.conf

# …configuration files -- for modular reasons.

# 

# For example:

# mod_deflate is loaded under confSuite-extramod_deflate_logio.conf and NOT under httpd.conf

# status_module is loaded under confextrahttpd-info.conf and NOT under httpd.conf

#

# Check last part of httpd.conf for the Apache base and 'Web-Developer' *.conf files that are included.

###



#LoadModule actions_module modules/mod_actions.so

LoadModule alias_module modules/mod_alias.so

#LoadModule asis_module modules/mod_asis.so

#LoadModule auth_basic_module modules/mod_auth_basic.so

#LoadModule auth_digest_module modules/mod_auth_digest.so

#LoadModule authn_anon_module modules/mod_authn_anon.so

#LoadModule authn_dbm_module modules/mod_authn_dbm.so

#LoadModule authn_default_module modules/mod_authn_default.so

#LoadModule authn_file_module modules/mod_authn_file.so

#LoadModule authz_dbm_module modules/mod_authz_dbm.so

#LoadModule authz_default_module modules/mod_authz_default.so

#LoadModule authz_groupfile_module modules/mod_authz_groupfile.so

LoadModule authz_host_module modules/mod_authz_host.so

#LoadModule authz_user_module modules/mod_authz_user.so

LoadModule autoindex_module modules/mod_autoindex.so

#LoadModule cern_meta_module modules/mod_cern_meta.so

#LoadModule cgi_module modules/mod_cgi.so

#LoadModule dav_module modules/mod_dav.so

#LoadModule dav_fs_module modules/mod_dav_fs.so

#LoadModule deflate_module modules/mod_deflate.so

LoadModule dir_module modules/mod_dir.so

#LoadModule env_module modules/mod_env.so

#LoadModule expires_module modules/mod_expires.so

#LoadModule file_cache_module modules/mod_file_cache.so

#LoadModule headers_module modules/mod_headers.so

#LoadModule imagemap_module modules/mod_imagemap.so

#LoadModule include_module modules/mod_include.so

#LoadModule info_module modules/mod_info.so

#LoadModule isapi_module modules/mod_isapi.so

LoadModule log_config_module modules/mod_log_config.so

LoadModule mime_module modules/mod_mime.so

#LoadModule mime_magic_module modules/mod_mime_magic.so

LoadModule mpm_event_module modules/mod_mpm_event.so

#LoadModule mpm_prefork_module modules/mod_mpm_prefork.so

#LoadModule mpm_worker_module modules/mod_mpm_worker.so

LoadModule proxy_module modules/mod_proxy.so

#LoadModule proxy_ajp_module modules/mod_proxy_ajp.so

#LoadModule proxy_balancer_module modules/mod_proxy_balancer.so

#LoadModule proxy_connect_module modules/mod_proxy_connect.so

#LoadModule proxy_http_module modules/mod_proxy_http.so

#LoadModule proxy_ftp_module modules/mod_proxy_ftp.so

#LoadModule negotiation_module modules/mod_negotiation.so

LoadModule rewrite_module modules/mod_rewrite.so

LoadModule setenvif_module modules/mod_setenvif.so

#LoadModule speling_module modules/mod_speling.so

#LoadModule status_module modules/mod_status.so

#LoadModule unique_id_module modules/mod_unique_id.so

#LoadModule userdir_module modules/mod_userdir.so

#LoadModule usertrack_module modules/mod_usertrack.so

#LoadModule vhost_alias_module modules/mod_vhost_alias.so





#CMS

<VirtualHost *:80>

  ServerName cms.dev.local



  ProxyPreserveHost  On

  #INCLUDE THE EXTRA PROXYPASS RULE FOR /site HERE

  ProxyPass /site/ http://localhost:8080/site/

  ProxyPass / http://localhost:8080/cms/

  ProxyPassReverse / http://localhost:8080/cms/

  ProxyPassReverseCookiePath /cms /

</VirtualHost> 

I have a couple of issues which are holding me back,

1. While I'm able to build the container with no issue, but when trying to up the container using "docker-compose up", the container starts and terminates instantaneously without any errors.


2. I don't see the port mapping for the container, which is odd.

Below is the output on executing docker inspect container_id.

[

    {

        "Id": "1d40fcc6c4c1383213386bbdfbed0434a4b86ebbfc79e18d450691d57f190c86",

        "Created": "2018-11-19T21:32:39.9551494Z",

        "Path": "httpd-foreground",

        "Args": ,

        "State": {

            "Status": "exited",

            "Running": false,

            "Paused": false,

            "Restarting": false,

            "OOMKilled": false,

            "Dead": false,

            "Pid": 0,

            "ExitCode": 1,

            "Error": "",

            "StartedAt": "2018-11-19T21:32:40.7494723Z",

            "FinishedAt": "2018-11-19T21:32:40.8537987Z"

        },

        "Image": "sha256:31f9d98b9ee458dbf1befb5e07c87c6ef959dcc2ef690fe523fd887b12f9dbf9",

        "ResolvConfPath": "/var/lib/docker/containers/1d40fcc6c4c1383213386bbdfbed0434a4b86ebbfc79e18d450691d57f190c86/resolv.conf",

        "HostnamePath": "/var/lib/docker/containers/1d40fcc6c4c1383213386bbdfbed0434a4b86ebbfc79e18d450691d57f190c86/hostname",

        "HostsPath": "/var/lib/docker/containers/1d40fcc6c4c1383213386bbdfbed0434a4b86ebbfc79e18d450691d57f190c86/hosts",

        "LogPath": "/var/lib/docker/containers/1d40fcc6c4c1383213386bbdfbed0434a4b86ebbfc79e18d450691d57f190c86/1d40fcc6c4c1383213386bbdfbed0434a4b86ebbfc79e18d450691d57f190c86-json.log",

        "Name": "/apache-rproxy-docker_apache2_1_71f4a0b7076b",

        "RestartCount": 0,

        "Driver": "overlay2",

        "Platform": "linux",

        "MountLabel": "",

        "ProcessLabel": "",

        "AppArmorProfile": "",

        "ExecIDs": null,

        "HostConfig": {

            "Binds": ,

            "ContainerIDFile": "",

            "LogConfig": {

                "Type": "json-file",

                "Config": {}

            },

            "NetworkMode": "apache-rproxy-docker_spa_network",

            "PortBindings": {

                "80/tcp": [

                    {

                        "HostIp": "",

                        "HostPort": "80"

                    }

                ]

            },

            "RestartPolicy": {

                "Name": "",

                "MaximumRetryCount": 0

            },

            "AutoRemove": false,

            "VolumeDriver": "",

            "VolumesFrom": ,

            "CapAdd": null,

            "CapDrop": null,

            "Dns": null,

            "DnsOptions": null,

            "DnsSearch": null,

            "ExtraHosts": null,

            "GroupAdd": null,

            "IpcMode": "shareable",

            "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": null,

            "BlkioDeviceReadBps": null,

            "BlkioDeviceWriteBps": null,

            "BlkioDeviceReadIOps": null,

            "BlkioDeviceWriteIOps": null,

            "CpuPeriod": 0,

            "CpuQuota": 0,

            "CpuRealtimePeriod": 0,

            "CpuRealtimeRuntime": 0,

            "CpusetCpus": "",

            "CpusetMems": "",

            "Devices": null,

            "DeviceCgroupRules": null,

            "DiskQuota": 0,

            "KernelMemory": 0,

            "MemoryReservation": 0,

            "MemorySwap": 0,

            "MemorySwappiness": null,

            "OomKillDisable": false,

            "PidsLimit": 0,

            "Ulimits": null,

            "CpuCount": 0,

            "CpuPercent": 0,

            "IOMaximumIOps": 0,

            "IOMaximumBandwidth": 0,

            "MaskedPaths": [

                "/proc/acpi",

                "/proc/kcore",

                "/proc/keys",

                "/proc/latency_stats",

                "/proc/timer_list",

                "/proc/timer_stats",

                "/proc/sched_debug",

                "/proc/scsi",

                "/sys/firmware"

            ],

            "ReadonlyPaths": [

                "/proc/asound",

                "/proc/bus",

                "/proc/fs",

                "/proc/irq",

                "/proc/sys",

                "/proc/sysrq-trigger"

            ]

        },

        "GraphDriver": {

            "Data": {

                "LowerDir": "/var/lib/docker/overlay2/4040cf05d15260b3de19e00df9ef8f05305e581372162d3d280603d1d741148a-init/diff:/var/lib/docker/overlay2/84adfc08eb41b4f6ede14df10775b291c8195ade8b5d6351892e7c0f0606bc92/diff:/var/lib/docker/overlay2/5e42bbf563f3fbc5829685509b13f1d5536886a68ee5bd913bd4910dc9737478/diff:/var/lib/docker/overlay2/48ccff5d0d55c955e8e3e49b62c01865826dbfd01bd25206c411ae69f08bda4e/diff:/var/lib/docker/overlay2/fa24d9a31cc583d8a9583e659d94a5fc507328449cfb066bbcd2d3da2d26d2bd/diff:/var/lib/docker/overlay2/33fec7b43c22926678461a9b352c8cafdc7ede8303cb3d90722e30c0f20731c2/diff:/var/lib/docker/overlay2/c91cbd2e7230cc22d9ac1e170ca724c478c4b708e0edc433dd035f4ff36d9957/diff",

                "MergedDir": "/var/lib/docker/overlay2/4040cf05d15260b3de19e00df9ef8f05305e581372162d3d280603d1d741148a/merged",

                "UpperDir": "/var/lib/docker/overlay2/4040cf05d15260b3de19e00df9ef8f05305e581372162d3d280603d1d741148a/diff",

                "WorkDir": "/var/lib/docker/overlay2/4040cf05d15260b3de19e00df9ef8f05305e581372162d3d280603d1d741148a/work"

            },

            "Name": "overlay2"

        },

        "Mounts": ,

        "Config": {

            "Hostname": "1d40fcc6c4c1",

            "Domainname": "",

            "User": "",

            "AttachStdin": false,

            "AttachStdout": false,

            "AttachStderr": false,

            "ExposedPorts": {

                "80/tcp": {}

            },

            "Tty": false,

            "OpenStdin": false,

            "StdinOnce": false,

            "Env": [

                "PATH=/usr/local/apache2/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",

                "HTTPD_PREFIX=/usr/local/apache2",

                "HTTPD_VERSION=2.4.37",

                "HTTPD_SHA256=3498dc5c6772fac2eb7307dc7963122ffe243b5e806e0be4fb51974ff759d726",

                "HTTPD_PATCHES=",

                "APACHE_DIST_URLS=https://www.apache.org/dyn/closer.cgi?action=download&filename= thttps://www-us.apache.org/dist/ thttps://www.apache.org/dist/ thttps://archive.apache.org/dist/"

            ],

            "Cmd": [

                "httpd-foreground"

            ],

            "ArgsEscaped": true,

            "Image": "apache-rproxy-docker_apache2",

            "Volumes": null,

            "WorkingDir": "/usr/local/apache2",

            "Entrypoint": null,

            "OnBuild": null,

            "Labels": {

                "com.docker.compose.config-hash": "df3b431078c66f67a39bb27012c1d8237e21a65cac4c1a69a30db3f25f27d7d3",

                "com.docker.compose.container-number": "1",

                "com.docker.compose.oneoff": "False",

                "com.docker.compose.project": "apache-rproxy-docker",

                "com.docker.compose.service": "apache2",

                "com.docker.compose.slug": "71f4a0b7076baa5b84ae33dda673173f29bb709e4904493b2b80847fa98f8e4",

                "com.docker.compose.version": "1.23.1"

            }

        },

        "NetworkSettings": {

            "Bridge": "",

            "SandboxID": "d27a9df7fe5a9e75f5c3444f95565389cccde58f3791237c266430b1cced8d18",

            "HairpinMode": false,

            "LinkLocalIPv6Address": "",

            "LinkLocalIPv6PrefixLen": 0,

            "Ports": {},

            "SandboxKey": "/var/run/docker/netns/d27a9df7fe5a",

            "SecondaryIPAddresses": null,

            "SecondaryIPv6Addresses": null,

            "EndpointID": "",

            "Gateway": "",

            "GlobalIPv6Address": "",

            "GlobalIPv6PrefixLen": 0,

            "IPAddress": "",

            "IPPrefixLen": 0,

            "IPv6Gateway": "",

            "MacAddress": "",

            "Networks": {

                "apache-rproxy-docker_spa_network": {

                    "IPAMConfig": null,

                    "Links": null,

                    "Aliases": [

                        "apache2",

                        "1d40fcc6c4c1"

                    ],

                    "NetworkID": "c2a24a5495f429efcff44ca247af058e29503a8e5659355cab7d0f3fe135f3b8",

                    "EndpointID": "",

                    "Gateway": "",

                    "IPAddress": "",

                    "IPPrefixLen": 0,

                    "IPv6Gateway": "",

                    "GlobalIPv6Address": "",

                    "GlobalIPv6PrefixLen": 0,

                    "MacAddress": "",

                    "DriverOpts": null

                }

            }

        }

    }

]

I'm working on the docker for the first time. Any help would be really appreciated.

Thanks!

OK, I was able to reproduce your issue using the files you provided. It's weird that you're not getting more info in the logs. But here's how I debugged it:

1. The fact that the status is restarting is bad - it means your container isn't staying up. I removed the restart: always line, but got the same result.




2. Let's narrow down the problem some more. I built your Dockerfile and ran it by running the following commands in the httpd directory: docker build -t apache-rproxy:latest . && docker run --rm -p 80:80 apache-rproxy:latest. Unfortunately, I got the same error with no additional logs.




3. Let's debug some more. Try the same command with the official httpd image: docker run --rm -p 80:80 httpd:2.4. Notice that this time, httpd starts and begins logging, and the container remains alive.

Now, the only difference between the httpd:2.4 image and the apache-rproxy:latest image is your config file. So you something in your httpd.conf is preventing apache from starting (or even logging anything). Work out what the problem is there and I think you'll have a working setup.