Collecting diagnostic information for a Docker container
Gather diagnostic information about the Docker containers that run z/OS® Connect Designer and IBM® z/OS Connect server images.
About this task
Procedure
Run the following Docker inspect
command:
docker inspect containerIdcontainerId specifies the name or ID of the Docker container.Results
docker inspect 52f71f22f171
[
{
"Id": "52f71f229bf7e109d0718cd523e7ac3d9a9348feb796885603a",
"Created": "2022-02-04T08:57:16.7283508Z",
"Path": "/opt/ibm/helpers/runtime/docker-server.sh",
"Args": [
"/bin/sh",
"-c",
"/opt/ibm/wlp/bin/server run defaultServer --clean"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 86623,
"ExitCode": 0,
"Error": "",
"StartedAt": "2022-02-04T08:57:17.6632832Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:3ecf1cce8007708f8eeb4bea618134db204d109e4832ea7ddb08303c54ad3345",
"ResolvConfPath": "/var/lib/docker/containers/52f71f229bf7e109d0718cd523e7ac3d9a9348feb796885603a/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/52f71f229bf7e109d0718cd523e7ac3d9a9348feb796885603a/hostname",
"HostsPath": "/var/lib/docker/containers/52f71f229bf7e109d0718cd523e7ac3d9a9348feb796885603a/hosts",
"LogPath": "/var/lib/docker/containers/52f71f229bf7e109d0718cd523e7ac3d9a9348feb796885603a/52f71f229bf7e109d0718cd523e7ac3d9a9348feb796885603a-json.log",
"Name": "/docker_zosConnect_1",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/Users/Alan/vNext_vols/config/certs:/config/resources/security:ro",
"/Users/Alan/vNext_vols/logs:/logs:rw",
"/Users/Alan/vNext_vols/project:/workspace/project:rw"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "docker_default",
"PortBindings": {
"9080/tcp": [
{
"HostIp": "",
"HostPort": "9080"
}
],
"9443/tcp": [
{
"HostIp": "",
"HostPort": "9443"
}
]
},
"RestartPolicy": {
"Name": "",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": [],
"CapAdd": null,
"CapDrop": null,
"CgroupnsMode": "host",
"Dns": null,
"DnsOptions": null,
"DnsSearch": null,
"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": 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": [
"/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/fc14317dcf0cc8ef631b22115be90be09062cdcaed6ee1587aa1ac3-init/diff:/var/lib/docker/overlay2/jekfxaloddl18rbm7iaadu0py/diff:/var/lib/docker/overlay2/exbsxsfmiuti01m3tlum36dtz/diff:/var/lib/docker/overlay2/v4kvy2ptn415p4fjxw48f1obz/diff:/var/lib/docker/overlay2/qzon0e8ovdvbnkfs5d5o52w9v/diff:/var/lib/docker/overlay2/tqvrjp0636rrzjeqwjwyd9qfd/diff:/var/lib/docker/overlay2/dgezuswwjvipnigxts8xqkyk8/diff:/var/lib/docker/overlay2/trj0n6vvuglxahpxvfo6nnyzi/diff:/var/lib/docker/overlay2/0ih4cp1qdjpnqic74qip1nko7/diff:/var/lib/docker/overlay2/igw1ke244jcfq8tg4ov5wic18/diff:/var/lib/docker/overlay2/o8ul250pmy5gtv5sbwizm6xpx/diff:/var/lib/docker/overlay2/xxrec031ii5vikyei6s4kxckk/diff:/var/lib/docker/overlay2/74ecc925d83a3b2d233dc32dd943f27c9365363aa3bfe32c29a1cb05e7e2c795/diff:/var/lib/docker/overlay2/12b9bc52156a9cf4659b92fb8deed281f66cb199ab5f04ee9accf72ae0e29d6b/diff:/var/lib/docker/overlay2/37b5c2171af741823de45732398ff74080fa8791740ecb71c1a07ecd729f2499/diff:/var/lib/docker/overlay2/ce594ebe619ed00df8ed32dfed9bffc35b6cbd2086fa57a0fc70b227920e4ec6/diff:/var/lib/docker/overlay2/899732ae5f19c6bea03a067cdecad1ab93228cd9f5b7b59de5cb6059cba0e05f/diff:/var/lib/docker/overlay2/4922d1cf2df637ea3e5ea59c1158265bb5f02a14ad5cb5c87895a939121db0a1/diff:/var/lib/docker/overlay2/aaecc99e90095977e3ab1100a614a6c76b973d75fa683da49560d5f7ec79447c/diff:/var/lib/docker/overlay2/15423bc339537cd661083df24c978757f6577bde1026884825dde0cc903d32ab/diff:/var/lib/docker/overlay2/680027ebb922e93c05ec22c281f25d6e4e7db376948f6e5f39bad4a2a44418b1/diff:/var/lib/docker/overlay2/82c633ca5e6396fcca284d3e6e4691d6eaf5552bd681170d5554b1cc87216177/diff:/var/lib/docker/overlay2/271a3c9321d8a83823307d1d8a7846720f7a18b5fdeade957c448a35834c67c4/diff:/var/lib/docker/overlay2/5e8642d17dc1c67d6dacfce20aa77a76f1ac8b17ab962c43e98b6edc3f8b371b/diff:/var/lib/docker/overlay2/fb05610c0fe108fe13cfddd1c36191ff15ec6779595fe4c9dd333d4d084fed75/diff:/var/lib/docker/overlay2/ecac2ee05c661a41149f5a69494ef5a65d9f19a96578a86a6e1c95aac469f196/diff:/var/lib/docker/overlay2/23535bd92a4089e773c212b26140a4b7772046e7e1dbbfb9e98e7073d91c372b/diff:/var/lib/docker/overlay2/5f6adb6a6ff2c6b82aa53cc223b2fbe485c4e3da394b2a7aba5634e578d8c8b7/diff",
"MergedDir": "/var/lib/docker/overlay2/fc14317dcf0cc8ef631b22115be90be09062cdcaed6ee1587aa1ac3/merged",
"UpperDir": "/var/lib/docker/overlay2/fc14317dcf0cc8ef631b22115be90be09062cdcaed6ee1587aa1ac3/diff",
"WorkDir": "/var/lib/docker/overlay2/fc14317dcf0cc8ef631b22115be90be09062cdcaed6ee1587aa1ac3/work"
},
"Name": "overlay2"
},
"Mounts": [
{
"Type": "bind",
"Source": "/Users/Alan/vNext_vols/config/certs",
"Destination": "/config/resources/security",
"Mode": "ro",
"RW": false,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/Users/Alan/vNext_vols/logs",
"Destination": "/logs",
"Mode": "rw",
"RW": true,
"Propagation": "rprivate"
},
{
"Type": "bind",
"Source": "/Users/Alan/vNext_vols/project",
"Destination": "/workspace/project",
"Mode": "rw",
"RW": true,
"Propagation": "rprivate"
}
],
"Config": {
"Hostname": "52f71f22f171",
"Domainname": "",
"User": "1001",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"9080/tcp": {},
"9443/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"DB2_USERNAME=NEXT001",
"DB2_PASSWORD={xor}Mj44bjwML2wzMxoxKy0m",
"PATH=/opt/gradle/bin:/opt/ibm/java/bin:/opt/ibm/wlp/bin:/opt/ibm/helpers/build:/opt/ibm/java/jre/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"container=oci",
"JAVA_VERSION=8.0.6.36",
"JAVA_HOME=/opt/ibm/java/jre",
"IBM_JAVA_OPTIONS=-XX:+UseContainerSupport",
"LIBERTY_VERSION=21.0.0_09",
"LOG_DIR=/logs",
"WLP_OUTPUT_DIR=/opt/ibm/wlp/output",
"OPENJ9_SCC=true",
"RANDFILE=/tmp/.rnd",
"WLP_LOGGING_CONSOLE_LOGLEVEL=info",
"WLP_LOGGING_CONSOLE_SOURCE=message,trace,accessLog,ffdc,audit",
"GRADLE_HOME=/opt/gradle",
"GRADLE_USER_HOME=/gradle"
],
"Cmd": [
"/bin/sh",
"-c",
"/opt/ibm/wlp/bin/server run defaultServer --clean"
],
"Image": "ibm-zcon-designer:latest",
"Volumes": {
"/config/resources/security": {},
"/logs": {},
"/workspace/project": {}
},
"WorkingDir": "",
"Entrypoint": [
"/opt/ibm/helpers/runtime/docker-server.sh"
],
"OnBuild": null,
"Labels": {
"BuildLabel": "cl210920210824-2341",
"ProductID": "fbf6a96d49214c0abc6a3bc5da6e48cd",
"ProductName": "WebSphere Application Server Liberty",
"ProductVersion": "21.0.0.9",
"architecture": "x86_64",
"build-date": "2021-09-14T16:37:54.438551",
"com.docker.compose.config-hash": "5e99f9e2bf6cc9cf4dd5a79ad6f84a36acf6eced52823c41b",
"com.docker.compose.container-number": "1",
"com.docker.compose.oneoff": "False",
"com.docker.compose.project": "docker",
"com.docker.compose.project.config_files": "docker-compose.yaml",
"com.docker.compose.project.working_dir": "/Users/Alan/vNext/scripts/docker",
"com.docker.compose.service": "zosConnect",
"com.docker.compose.version": "1.29.2",
"com.redhat.build-host": "cpt-1002.osbs.prod.upshift.rdu2.redhat.com",
"com.redhat.component": "ubi8-container",
"com.redhat.license_terms": "https://www.redhat.com/en/about/red-hat-end-user-license-agreements#UBI",
"description": "This image contains the WebSphere Liberty runtime with IBM's Java and Red Hat's UBI 8 as the base OS. For more information on this image please see https://github.com/WASdev/ci.docker#building-an-application-image",
"distribution-scope": "public",
"io.k8s.description": "The Universal Base Image is designed and engineered to be the base layer for all of your containerized applications, middleware and utilities. This base image is freely redistributable, but Red Hat only supports Red Hat technologies through subscriptions for Red Hat products. This image is maintained by Red Hat and updated regularly.",
"io.k8s.display-name": "Red Hat Universal Base Image 8",
"io.openshift.expose-services": "",
"io.openshift.tags": "base rhel8",
"maintainer": "Red Hat, Inc.",
"name": "IBM WebSphere Liberty",
"org.opencontainers.image.authors": "Arthur De Magalhaes, Chris Potter",
"org.opencontainers.image.documentation": "https://www.ibm.com/support/knowledgecenter/SSAW57_liberty/com.ibm.websphere.wlp.nd.multiplatform.doc/ae/cwlp_about.html",
"org.opencontainers.image.revision": "cl210920210824-2341",
"org.opencontainers.image.url": "http://wasdev.net",
"org.opencontainers.image.vendor": "IBM",
"org.opencontainers.image.version": "21.0.0.9",
"release": "8",
"run": "docker run --rm -ti \u003cimage_name:tag\u003e /bin/bash",
"summary": "Image for WebSphere Liberty with IBM's Java and Red Hat's UBI 8",
"url": "https://access.redhat.com/containers/#/registry.access.redhat.com/ubi8/images/8.4-211",
"vcs-ref": "ed5adf70c28eb951940c7a32c4bca2165",
"vcs-type": "git",
"vendor": "IBM",
"version": "21.0.0.9"
}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "fb80e2a2eae852ee6ee9833644886a64fa9e9e5cca2559",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"9080/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "9080"
},
{
"HostIp": "::",
"HostPort": "9080"
}
],
"9443/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "9443"
},
{
"HostIp": "::",
"HostPort": "9443"
}
]
},
"SandboxKey": "/var/run/docker/netns/fb80e2a2eae8",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"docker_default": {
"IPAMConfig": null,
"Links": null,
"Aliases": [
"52f71f22f171",
"zosConnect"
],
"NetworkID": "f7a0ab1466ce1da8d3aebe46716e74eb5013e3056ab51809bf15739f16c",
"EndpointID": "2e4309db5e028601bf23bbdb43f70053a6180080182549234b159d7817",
"Gateway": "192.168.0.1",
"IPAddress": "192.168.0.2",
"IPPrefixLen": 20,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:99:c9:b8:00:02",
"DriverOpts": null
}
}
}
}
]Checking the memory and CPU usage of a Docker container
Procedure
Run the Docker
stats
command:
docker stats --no-stream containerIdcontainerId specifies the name or ID of the Docker container.Results
docker stats --no-stream 194e93d45332
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
194e93d45332 docker_zosConnect_1 6.85% 1.094GiB / 2.922GiB 37.45% 227kB / 20MB 600MB / 172MB 90