在k8s中，所有的容器，工作負載，最終都是要運行到節點上的，以容器的方式運行
那麼，如果要在節點上，查看該節點上運行的容器的pod的名字，pod的信息，該怎麼查看？
方法非常的簡單。
1、登錄到任意的工作節點
2、查看容器的ID
4f5de6bafde3就是容器的ID
root@nccztsjb-node-19 ~]# docker ps | grep dev-ssc-ssc 4f5de6bafde3 reg.yyuap.io:81/yonbip/ssc-ssc "/usr/bin/dumb-init …" 7 weeks ago Up 7 weeks k8s_dev-ssc-ssc_dev-ssc-ssc-78b477b487-z77xz_c87e2267-1001-4c70-bb2a-ab41f3b81aa3_c69a75d3-e339-407c-aa60-424d664dd0da_0 72838c69746a reg.yyuap.io:81/kubernetes/pause:3.3 "/pause" 7 weeks ago Up 7 weeks k8s_POD_dev-ssc-ssc-78b477b487-z77xz_c87e2267-1001-4c70-bb2a-ab41f3b81aa3_c69a75d3-e339-407c-aa60-424d664dd0da_0 [root@nccztsjb-node-19 ~]#
3、查看容器的信息
因爲該容器是由k8s調度的，kubelet運行的，所以會有一些K8S相關的信息
通過docker inspect 命令來查看
docker inspect --format='{{index .Config.Labels "io.kubernetes.pod.name"}}' 4f5de6bafde3
就可以看到容器的pod的名字
[root@nccztsjb-node-19 ~]# docker inspect --format='{{index .Config.Labels "io.kubernetes.pod.name"}}' 4f5de6bafde3 dev-ssc-ssc-78b477b487-z77xz [root@nccztsjb-node-19 ~]#
當然，還可以看到更多的信息
[root@nccztsjb-node-19 ~]# docker inspect 4f5de6bafde3 [ { "Id": "4f5de6bafde3e490da6740bae386e3b5b6319bf616bffae61c707bf36f9af8fc", "Created": "2022-08-01T05:34:59.164476102Z", "Path": "/usr/bin/dumb-init", "Args": [ "--", "entrypoint.sh", "catalina.sh", "run" ], "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 1350, "ExitCode": 0, "Error": "", "StartedAt": "2022-08-01T05:34:59.403013016Z", "FinishedAt": "0001-01-01T00:00:00Z" }, "Image": "sha256:a15996757a217a10bfd32f546b33d90cdaea98aee9a483cf7126f81c22aef46a", "ResolvConfPath": "/data/docker/containers/72838c69746adc497f5ef11aa32e5a409ffa95ea2ff0298c59ddbe363a8a6e33/resolv.conf", "HostnamePath": "/data/docker/containers/72838c69746adc497f5ef11aa32e5a409ffa95ea2ff0298c59ddbe363a8a6e33/hostname", "HostsPath": "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/etc-hosts", "LogPath": "/data/docker/containers/4f5de6bafde3e490da6740bae386e3b5b6319bf616bffae61c707bf36f9af8fc/4f5de6bafde3e490da6740bae386e3b5b6319bf616bffae61c707bf36f9af8fc-json.log", "Name": "/k8s_dev-ssc-ssc_dev-ssc-ssc-78b477b487-z77xz_c87e2267-1001-4c70-bb2a-ab41f3b81aa3_c69a75d3-e339-407c-aa60-424d664dd0da_0", "RestartCount": 0, "Driver": "overlay2", "Platform": "linux", "MountLabel": "", "ProcessLabel": "", "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": [ "/data/log:/developerMountData/log", "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/volumes/kubernetes.io~secret/default-token-tcdsn:/var/run/secrets/kubernetes.io/serviceaccount:ro", "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/etc-hosts:/etc/hosts", "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/containers/dev-ssc-ssc/96f72e2d:/dev/termination-log" ], "ContainerIDFile": "", "LogConfig": { "Type": "json-file", "Config": {} }, "NetworkMode": "container:72838c69746adc497f5ef11aa32e5a409ffa95ea2ff0298c59ddbe363a8a6e33", "PortBindings": null, "RestartPolicy": { "Name": "no", "MaximumRetryCount": 0 }, "AutoRemove": false, "VolumeDriver": "", "VolumesFrom": null, "CapAdd": null, "CapDrop": null, "CgroupnsMode": "host", "Dns": null, "DnsOptions": null, "DnsSearch": null, "ExtraHosts": null, "GroupAdd": null, "IpcMode": "container:72838c69746adc497f5ef11aa32e5a409ffa95ea2ff0298c59ddbe363a8a6e33", "Cgroup": "", "Links": null, "OomScoreAdj": -997, "PidMode": "", "Privileged": false, "PublishAllPorts": false, "ReadonlyRootfs": false, "SecurityOpt": [ "seccomp=unconfined" ], "UTSMode": "", "UsernsMode": "", "ShmSize": 67108864, "Runtime": "runc", "ConsoleSize": [ 0, 0 ], "Isolation": "", "CpuShares": 1024, "Memory": 2147483648, "NanoCpus": 0, "CgroupParent": "/kubepods/podc69a75d3-e339-407c-aa60-424d664dd0da", "BlkioWeight": 0, "BlkioWeightDevice": null, "BlkioDeviceReadBps": null, "BlkioDeviceWriteBps": null, "BlkioDeviceReadIOps": null, "BlkioDeviceWriteIOps": null, "CpuPeriod": 100000, "CpuQuota": 100000, "CpuRealtimePeriod": 0, "CpuRealtimeRuntime": 0, "CpusetCpus": "", "CpusetMems": "", "Devices": [], "DeviceCgroupRules": null, "DeviceRequests": null, "KernelMemory": 0, "KernelMemoryTCP": 0, "MemoryReservation": 0, "MemorySwap": 2147483648, "MemorySwappiness": null, "OomKillDisable": false, "PidsLimit": null, "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": "/data/docker/overlay2/cd4896984a0be3ca5db5fbe686e7e5ff9d9274572e08e260f2a17c87e85aad6c-init/diff:/data/docker/overlay2/753f011a551637a19e5c7d92ba371e91fbbadb9fe2be5e9b175a0ecc3f7125c4/diff:/data/docker/overlay2/9a791305c782ffa259df2c393c34cba4e0987132e2b53b725676b8d660c9d578/diff:/data/docker/overlay2/66b1d7268215c8a3389af8a7f76d06ed134ebd09c092b5a2c2aa6e52bb33b23d/diff:/data/docker/overlay2/c95263219f555b844da582dd2d92883b2fae8e51998901d6bca34076c521346d/diff:/data/docker/overlay2/75bb3dbf7999568fda45991901df910dbb225d17862d242fc49a5a31095c467d/diff:/data/docker/overlay2/f08c31461a9196402af32aacbed7f620950af56d6ab0693bcd421f4a2d79dadb/diff:/data/docker/overlay2/4d009af171505cd397bc150d3d3228236a0be2c099f08f260493848dc1bea761/diff", "MergedDir": "/data/docker/overlay2/cd4896984a0be3ca5db5fbe686e7e5ff9d9274572e08e260f2a17c87e85aad6c/merged", "UpperDir": "/data/docker/overlay2/cd4896984a0be3ca5db5fbe686e7e5ff9d9274572e08e260f2a17c87e85aad6c/diff", "WorkDir": "/data/docker/overlay2/cd4896984a0be3ca5db5fbe686e7e5ff9d9274572e08e260f2a17c87e85aad6c/work" }, "Name": "overlay2" }, "Mounts": [ { "Type": "bind", "Source": "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/etc-hosts", "Destination": "/etc/hosts", "Mode": "", "RW": true, "Propagation": "rprivate" }, { "Type": "bind", "Source": "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/containers/dev-ssc-ssc/96f72e2d", "Destination": "/dev/termination-log", "Mode": "", "RW": true, "Propagation": "rprivate" }, { "Type": "bind", "Source": "/data/log", "Destination": "/developerMountData/log", "Mode": "", "RW": true, "Propagation": "rprivate" }, { "Type": "bind", "Source": "/var/lib/kubelet/pods/c69a75d3-e339-407c-aa60-424d664dd0da/volumes/kubernetes.io~secret/default-token-tcdsn", "Destination": "/var/run/secrets/kubernetes.io/serviceaccount", "Mode": "ro", "RW": false, "Propagation": "rprivate" } ], "Config": { "Hostname": "dev-ssc-ssc-78b477b487-z77xz", "Domainname": "", "User": "0", "AttachStdin": false, "AttachStdout": false, "AttachStderr": false, "ExposedPorts": { "8888/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "cf_disconf_user_define_download_dir_ncc_common=/", "cf_disconf_env_ncc_common=dev", "developer_hubble_apm=true", "MALLOC_ARENA_MAX=1", "LOG_INSTANCE_ID=dev-ssc-ssc-78b477b487-z77xz", "iris.serviceUrl.defaultZone=http://172.20.45.214:80/registry-0/eureka/", "DNS_SERVER=default", "dc_k8s_namespace=c87e2267-1001-4c70-bb2a-ab41f3b81aa3", "dc_k8s_terminate_seconds=360", "cf_disconf_user_define_config_path_dir_ncc_common={}", "FORMAT_MESSAGES_PATTERN_DISABLE_LOOKUPS=true", "disconf.conf_server_host=http://172.20.45.214:80/confcenter", "cf_disconf_conf_server_host=http://172.20.45.214/confcenter", "cf_clientAccessKey=fuaJUwsE69mccrCl", "hubble_agent_url=http://172.20.45.214:80/download/hubble-agent.jar", "dc_app_env=dev", "access.secret=evQeAcSH8jm2UysqVNbsNvDEG4a0C8", "INSTANCE_HOST_IP=172.20.45.40", "hubble_collect_url=http://172.20.45.214:80", "cf_disconf_version=1.0.0", "http_read_timeout=1200000", "isPremises=true", "podIP=172.23.37.7", "enable_jmx_monitor=true", "PORT=80", "dc_hostname=http://172.20.45.214", "developer_app_logs=c87e2267-1001-4c70-bb2a-ab41f3b81aa3;dev-ssc-ssc;/usr/local/tomcat/webapps/ROOT/WEB-INF/home/nclogs/", "dc_app_name=ssc-ssc", "dc_k8s_dns_policy=ClusterFirst", "cf_disconf_version_ncc_common=1.0.0", "dc_k8s_svc_name=dev-ssc-ssc", "dc_app_code=ssc-ssc", "HOST=dev-ssc-ssc.prod1.yonyoucloud-k8s.com", "JAVA_OPTS=-server -Xms512m -Xmx1792m -Xss8m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=768m -Duser.timezone=GMT+08 -Dfile.encoding=UTF8 -Dsun.jnu.encoding=UTF8 -Djava.awt.headless=true -XX:+DisableExplicitGC -Xbootclasspath/a:/usr/local/tomcat/webapps/ROOT/WEB-INF/home/yonyou-yyy-agent/probes/boot/boot.jar -javaagent:/usr/local/tomcat/webapps/ROOT/WEB-INF/home/yonyou-yyy-agent/probes/yonyou-yyy.jar", "cf_disconf_user_define_confing_file=authority.json,cbdegrade.json,moblie_imagescan.xml,strategy.json", "cf_disconf_download_order_ncc_common=2", "cf_disconf_app=ssc-ssc", "mw_profiles_active=dev", "cf_disconf_env=dev", "access.key=fuaJUwsE69mccrCl", "cf_disconf_user_define_download_dir=/", "cf_disconf_app_ncc_common=ncc-common", "LOG4J_log4j2_formatMsgNoLookups=true", "cf_clientAccessSecret=evQeAcSH8jm2UysqVNbsNvDEG4a0C8", "cf_disconf_user_define_confing_file_ncc_common=ca1.js,caRegisterCenter.xml,datawork.xml,dbdriverset.xml,dbmerge.properties,esn.properties,eureka.properties,gray.properties,group-mapping.properties,intelliv.properties,iTrusServerConfig.properties,iuap-licenseclient-conf.properties,key.properties,lock-conf.properties,logger-config.properties,macloud.properties,miscellaneous.xml,mq.properties,msconfig-public.properties,nccssoConfig.xml,nlinkpe.properties,nmc.properties,obmconfig.properties,prop.xml,redis-config.xml,safehost.properties,server.xml,shutdown.sh,signature.xml,tenantinfo.properties,ufs.properties,ufs_net.properties", "registry=http://172.20.45.214:80", "KUBERNETES_PORT_443_TCP_PORT=443", "KUBERNETES_PORT_443_TCP_ADDR=10.96.0.1", "KUBERNETES_SERVICE_HOST=10.96.0.1", "KUBERNETES_SERVICE_PORT=443", "KUBERNETES_SERVICE_PORT_HTTPS=443", "KUBERNETES_PORT=tcp://10.96.0.1:443", "KUBERNETES_PORT_443_TCP=tcp://10.96.0.1:443", "KUBERNETES_PORT_443_TCP_PROTO=tcp", "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/java/bin:/usr/local/tomcat/lib:/usr/local/tomcat/bin", "LANG=zh_CN.UTF-8", "LANGUAGE=zh_CN.UTF-8", "LC_CTYPE=zh_CN.UTF-8", "LC_ALL=zh_CN.UTF-8", "TZ=Asia/Shanghai", "JAVA_MAJOR=8", "WORKDIR=/usr/local/tomcat", "BASE_IMAGE=tomcat:9.0.53-jdk8-alpine", "TOMCAT_VERSION=9.0.53", "JAVA_VERSION=8u202", "GLIBC_VERSION=2.33-r0", "JAVA_HOME=/usr/local/java", "CATALINA_HOME=/usr/local/tomcat", "CLASSPATH=/usr/local/java/lib/dt.jar:/usr/local/java/lib/tools.jar" ], "Cmd": [ "catalina.sh", "run" ], "Healthcheck": { "Test": [ "NONE" ] }, "Image": "reg.yyuap.io:81/yonbip/ssc-ssc@sha256:a0d5931b540f4c6bc87b0b2b6f4280ec8396ae275a8021f2557620ccb45919e2", "Volumes": null, "WorkingDir": "/usr/local/tomcat/webapps", "Entrypoint": [ "/usr/bin/dumb-init", "--", "entrypoint.sh" ], "OnBuild": null, "Labels": { "annotation.io.kubernetes.container.hash": "45e7140c", "annotation.io.kubernetes.container.ports": "[{\"containerPort\":8888,\"protocol\":\"TCP\"}]", "annotation.io.kubernetes.container.preStopHandler": "{\"exec\":{\"command\":[\"/bin/sh\",\"-c\",\"if [[ -f /bin/offline.sh ]]; then /bin/offline.sh;fi; if [[ -f /bin/shutdown.sh ]]; then /bin/shutdown.sh; fi\"]}}", "annotation.io.kubernetes.container.restartCount": "0", "annotation.io.kubernetes.container.terminationMessagePath": "/dev/termination-log", "annotation.io.kubernetes.container.terminationMessagePolicy": "File", "annotation.io.kubernetes.pod.terminationGracePeriod": "360", "io.kubernetes.container.logpath": "/var/log/pods/c87e2267-1001-4c70-bb2a-ab41f3b81aa3_dev-ssc-ssc-78b477b487-z77xz_c69a75d3-e339-407c-aa60-424d664dd0da/dev-ssc-ssc/0.log", "io.kubernetes.container.name": "dev-ssc-ssc", "io.kubernetes.docker.type": "container", "io.kubernetes.pod.name": "dev-ssc-ssc-78b477b487-z77xz", "io.kubernetes.pod.namespace": "c87e2267-1001-4c70-bb2a-ab41f3b81aa3", "io.kubernetes.pod.uid": "c69a75d3-e339-407c-aa60-424d664dd0da", "io.kubernetes.sandbox.id": "72838c69746adc497f5ef11aa32e5a409ffa95ea2ff0298c59ddbe363a8a6e33" } }, "NetworkSettings": { "Bridge": "", "SandboxID": "", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": {}, "SandboxKey": "", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "", "Gateway": "", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "", "IPPrefixLen": 0, "IPv6Gateway": "", "MacAddress": "", "Networks": {} } } ] [root@nccztsjb-node-19 ~]#
- namespace的名字
- pod的名字
- prestop腳本
- 容器的名字
很多的k8s給加上去的信息都是可以查看到的！