I have a container that is already running in production, but I have no clue how it was instantiated.
When running docker inspect I get :
[root ~]# docker inspect nova_libvirt
[
{
"Id": "b8b3c5fe243639765f5cf9da3bf63d10ce0390ba9351ce834acc1e2dc995500c",
"Created": "2020-04-27T13:39:05.565536863Z",
"Path": "dumb-init",
"Args": [
"--single-child",
"--",
"kolla_start"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 275828,
"ExitCode": 0,
"Error": "",
"StartedAt": "2021-03-01T09:54:56.449443024Z",
"FinishedAt": "2021-03-01T09:54:56.005712036Z"
},
"Image": "sha256:01ad3421ed326320711b380a2143900c494ff5d09d3359cceb834d83be87fa0e",
"ResolvConfPath": "/var/lib/docker/containers/b8b3c5fe243639765f5cf9da3bf63d10ce0390ba9351ce834acc1e2dc995500c/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/b8b3c5fe243639765f5cf9da3bf63d10ce0390ba9351ce834acc1e2dc995500c/hostname",
"HostsPath": "/var/lib/docker/containers/b8b3c5fe243639765f5cf9da3bf63d10ce0390ba9351ce834acc1e2dc995500c/hosts",
"LogPath": "/var/lib/docker/containers/b8b3c5fe243639765f5cf9da3bf63d10ce0390ba9351ce834acc1e2dc995500c/b8b3c5fe243639765f5cf9da3bf63d10ce0390ba9351ce834acc1e2dc995500c-json.log",
"Name": "/nova_libvirt",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/dev:/dev:rw",
"/etc/localtime:/etc/localtime:ro",
"nova_compute:/var/lib/nova/:rw",
"libvirtd:/var/lib/libvirt:rw",
"/lib/modules:/lib/modules:ro",
"nova_libvirt_qemu:/etc/libvirt/qemu:rw",
"/run/:/run/:shared",
"kolla_logs:/var/log/kolla/:rw",
"/etc/kolla/nova-libvirt/:/var/lib/kolla/config_files/:ro",
"/sys/fs/cgroup:/sys/fs/cgroup:rw"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {
"max-file": "5",
"max-size": "50m"
}
},
"NetworkMode": "host",
"PortBindings": null,
"RestartPolicy": {
"Name": "unless-stopped",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"Capabilities": null,
"Dns": [],
"DnsOptions": [],
"DnsSearch": [],
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "private",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "host",
"Privileged": true,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": [
"label=disable"
],
"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,
"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": null,
"ReadonlyPaths": null
},
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/11ef7944443812a53395157ee4aede8680fbfb9ac597eda86e2c093bcec118cc-init/diff:/var/lib/docker/overlay2/2af0d4e5773399882c40b005ef850c1c4d0558fc90b428f5bf8ccea7e5fc3af8/diff:/var/lib/docker/overlay2/efdc0804909359a050b4aeba4f0bf75382deef295f6e828bd15e084194faca54/diff:/var/lib/docker/overlay2/69d37aabb7906867243cc1e31d743169e071b3f153e51717ef3f3baf1b2e9ebf/diff:/var/lib/docker/overlay2/dd1431a7fc3a9aaf0c7d7c566c1279d9d5d3ad7fc03af30c2c506e9ab9870be0/diff:/var/lib/docker/overlay2/f40316ea2ae36e1e70c83516b72dac2c19c49a097257134d55b2655f8710fde2/diff:/var/lib/docker/overlay2/0171458501abd44d69851025bb7c0f561268170e6e1ef4bccac225b8a20a62f3/diff:/var/lib/docker/overlay2/809f837bd446d703443e3b3e2dda6e61182335796703c9a59f6cc9034b9fb3dc/diff:/var/lib/docker/overlay2/9648e5900c9996ae4bd5d101b417d40869f651bd35232399bd16594a5b4f27c6/diff:/var/lib/docker/overlay2/69d40d0330fb97d1278d7c4c7465c224cf3f77ecfb736312c857fa8412ad3f1d/diff:/var/lib/docker/overlay2/89128c3d61db9d103a551e0fe7b7ded9bdfbc946b5f4de38ef3674e9d539c81b/diff:/var/lib/docker/overlay2/990c5b921cc564d4bc1194601630346dcac7fd505e676e831c8070eb663bcce7/diff:/var/lib/docker/overlay2/d5acfc1e130a6f205c2c988fa8a1cda052155607491d4024f3af7ef3d266bd8d/diff:/var/lib/docker/overlay2/5a484ef0dbab98313e5353bb517a65346d264d84fe1a160dda07ca2e17206bf3/diff:/var/lib/docker/overlay2/09b98b7d1771867368a61e304f6e4fa16a219dcea144f3e39dca979acabb1b3c/diff:/var/lib/docker/overlay2/31f6915004b0d6e863242dc90eb259446d5cd814b1817af87cf09fda381c4408/diff:/var/lib/docker/overlay2/5d27ac85851ef08ad0e3c4fec87ac6a4e2f03ff73805929f26ed92a481c2ed29/diff:/var/lib/docker/overlay2/c879a64cd05abf2c7b467eed2cd190ef3ca0a20d5c3de3ba899d8bc5a9859481/diff:/var/lib/docker/overlay2/387a94915f00067540ba5300abea5f339facf11b153c3dade32ae2f30a01bc53/diff:/var/lib/docker/overlay2/c30bd84edefc02eae2223e36ef1a2f82be00a21ec8a74c6e4a88328fc84512c8/diff:/var/lib/docker/overlay2/c0ae4908e8725c9ddd2a5fa1b67f87dd3b1ce9a8092586234d3e315c4de0feb6/diff:/var/lib/docker/overlay2/5e8cdcc2373618e54628da29c6bd6597a09e79e7a6c55671b97d5aeb0dadd009/diff:/var/lib/docker/overlay2/6a3c773e5404dc89a3b2b885b9f99e9bbc726c2b8571911bc8230f369c7f49b9/diff:/var/lib/docker/overlay2/6f950ed2dc99233fd253f3fc69b4d576b0d0227eb5dcdcee7d23d83a328414d6/diff:/var/lib/docker/overlay2/a092bd1493f129264f0be5f300f4b93f9fe046d327e53c0fce22bee9b033465d/diff:/var/lib/docker/overlay2/d243bb995ff298e31def2dfce8b077e298d512ad3017e0554791b18fa37fc528/diff:/var/lib/docker/overlay2/dcf7521ae403c7ea3ef5cbc93d2c45247781ed5232726907b1f4a46f3682a173/diff:/var/lib/docker/overlay2/c2fc728cae8aeacc77d6b48f3f602987e4996893cffa5bd8f3ede723cd86aac6/diff:/var/lib/docker/overlay2/3eb1a6b158dccc03932dfe66a26f3bcc476d3e36dcb04113fe8e6bad7424a3ad/diff:/var/lib/docker/overlay2/4b7f039bc9be3b64a48ad9c36b32479d3c1bc21210f313f4bb16b01755d6486f/diff:/var/lib/docker/overlay2/399f1a7c4d78ef537dd4d654edc944b1c0393f6b2ec8ccd989bfb794a07b5770/diff:/var/lib/docker/overlay2/bb7687009fc2ede8497478ceab8bdea05daa6a124d4e8a431d2da370897a82fe/diff",
"MergedDir": "/var/lib/docker/overlay2/11ef7944443812a53395157ee4aede8680fbfb9ac597eda86e2c093bcec118cc/merged",
"UpperDir": "/var/lib/docker/overlay2/11ef7944443812a53395157ee4aede8680fbfb9ac597eda86e2c093bcec118cc/diff",
"WorkDir": "/var/lib/docker/overlay2/11ef7944443812a53395157ee4aede8680fbfb9ac597eda86e2c093bcec118cc/work"
},
"Name": "overlay2"
},
"Mounts": [
{
"Type": "volume",
"Name": "nova_libvirt_qemu",
"Source": "/var/lib/docker/volumes/nova_libvirt_qemu/_data",
"Destination": "/etc/libvirt/qemu",
"Driver": "local",
"Mode": "rw",
"RW": true,
"Propagation": ""
},
{
"Type": "bind",
"Source": "/etc/localtime",
"Destination": "/etc/localtime",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/etc/kolla/nova-libvirt",
"Destination": "/var/lib/kolla/config_files",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
},
{
"Type": "volume",
"Name": "libvirtd",
"Source": "/var/lib/docker/volumes/libvirtd/_data",
"Destination": "/var/lib/libvirt",
"Driver": "local",
"Mode": "rw",
"RW": true,
"Propagation": ""
},
{
"Type": "volume",
"Name": "nova_compute",
"Source": "/var/lib/docker/volumes/nova_compute/_data",
"Destination": "/var/lib/nova",
"Driver": "local",
"Mode": "rw",
"RW": true,
"Propagation": ""
},
{
"Type": "bind",
"Source": "/dev",
"Destination": "/dev",
"Mode": "rw",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/lib/modules",
"Destination": "/lib/modules",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/run",
"Destination": "/run",
"Mode": "shared",
"RW": true,
"Propagation": "shared"
},
{
"Type": "bind",
"Source": "/sys/fs/cgroup",
"Destination": "/sys/fs/cgroup",
"Mode": "rw",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "volume",
"Name": "kolla_logs",
"Source": "/var/lib/docker/volumes/kolla_logs/_data",
"Destination": "/var/log/kolla",
"Driver": "local",
"Mode": "rw",
"RW": true,
"Propagation": ""
}
],
"Config": {
"Hostname": "$HOSTNAME)",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"KOLLA_SERVICE_NAME=nova-libvirt",
"KOLLA_CONFIG_STRATEGY=COPY_ALWAYS",
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"LANG=en_US.UTF-8",
"KOLLA_BASE_DISTRO=centos",
"KOLLA_INSTALL_TYPE=source",
"KOLLA_INSTALL_METATYPE=mixed",
"KOLLA_DISTRO_PYTHON_VERSION=2.7",
"KOLLA_BASE_ARCH=x86_64",
"PS1=$(tput bold)($(printenv KOLLA_SERVICE_NAME))$(tput sgr0)[$(id -un)@$(hostname -s) $(pwd)]$ "
],
"Cmd": [
"kolla_start"
],
"Image": "harbor.chtrse.com/kolla/centos-source-nova-libvirt:train",
"Volumes": {
"/dev": {},
"/etc/libvirt/qemu": {},
"/etc/localtime": {},
"/lib/modules": {},
"/run/": {},
"/sys/fs/cgroup": {},
"/var/lib/kolla/config_files/": {},
"/var/lib/libvirt": {},
"/var/lib/nova/": {},
"/var/log/kolla/": {}
},
"WorkingDir": "",
"Entrypoint": [
"dumb-init",
"--single-child",
"--"
],
"OnBuild": null,
"Labels": {
"build-date": "20200424",
"kolla_version": "9.0.2",
"maintainer": "Kolla Project (https://launchpad.net/kolla)",
"name": "nova-libvirt",
"org.label-schema.build-date": "20191001",
"org.label-schema.license": "GPLv2",
"org.label-schema.name": "CentOS Base Image",
"org.label-schema.schema-version": "1.0",
"org.label-schema.vendor": "CentOS"
}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "f08f5ee1e3b83d93c2ffc3dbc5c2ada4f5a0618acab9471b0c95c4bb3f5948d0",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/default",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"host": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "5ccb5bdfb29728cbaf4779d80a551cf88e6554a9486d44bb3638232e642be4a8",
"EndpointID": "dc305c855aaef946783ea903330967b09a90ad2e21eb93e584c7dbcae8f275e6",
"Gateway": "",
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "",
"DriverOpts": null
}
}
}
}
]
The problem is I need to make a change to this container, which will require me to do the following:
- Modify The Docker Image
- Commit The Changes To The Docker Image
- Stop and Remove The Old Container After Migrating Applications
- Pull The New Docker Image
- Run The Docker Container Again with The Same Specs and The New Image
The current container has several mounts as I can see, but there is some other things in there that I am unfamiliar with in terms of ARGS and what not. So my question is how can I interpret the required Docker Run Command from The Inspect Output?
