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CRC(CodeReady Containers) for Mac runs a DNS server for name resolution in the CRC VM on hyperkit. The DNS server is run as a container by Podman and starts dnsmasq. On the Mac, *.testing domain name resolution is directed to the CRC VM by "/etc/resolver".
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| $ export CRC_IP=$(crc ip) | |
| $ ssh -i ~/.crc/machines/crc/id_rsa core@$CRC_IP | |
| [core@crc-zqfk6-master-0 ~]$ sudo podman inspect dnsmasq | |
| [ | |
| { | |
| "Id": "ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f", | |
| "Created": "2020-09-20T06:28:57.900735714Z", | |
| "Path": "/usr/sbin/dnsmasq", | |
| "Args": [ | |
| "--keep-in-foreground" | |
| ], | |
| "State": { | |
| "OciVersion": "1.0.1-dev", | |
| "Status": "running", | |
| "Running": true, | |
| "Paused": false, | |
| "Restarting": false, | |
| "OOMKilled": false, | |
| "Dead": false, | |
| "Pid": 2012, | |
| "ConmonPid": 2000, | |
| "ExitCode": 0, | |
| "Error": "", | |
| "StartedAt": "2020-09-20T06:28:58.53765477Z", | |
| "FinishedAt": "0001-01-01T00:00:00Z", | |
| "Healthcheck": { | |
| "Status": "", | |
| "FailingStreak": 0, | |
| "Log": null | |
| } | |
| }, | |
| "Image": "72e07c0aff7be53b9e5051f1d22f8d4400083ac328e6f138bc2d6a239b55ba38", | |
| "ImageName": "quay.io/crcont/dnsmasq:latest", | |
| "Rootfs": "", | |
| "Pod": "", | |
| "ResolvConfPath": "/var/run/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata/resolv.conf", | |
| "HostnamePath": "/var/run/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata/hostname", | |
| "HostsPath": "/var/run/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata/hosts", | |
| "StaticDir": "/var/lib/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata", | |
| "OCIConfigPath": "/var/lib/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata/config.json", | |
| "OCIRuntime": "runc", | |
| "LogPath": "/var/lib/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata/ctr.log", | |
| "LogTag": "", | |
| "ConmonPidFile": "/var/run/containers/storage/overlay-containers/ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f/userdata/conmon.pid", | |
| "Name": "dnsmasq", | |
| "RestartCount": 0, | |
| "Driver": "overlay", | |
| "MountLabel": "system_u:object_r:container_file_t:s0:c18,c244", | |
| "ProcessLabel": "", | |
| "AppArmorProfile": "", | |
| "EffectiveCaps": [ | |
| "CAP_CHOWN", | |
| "CAP_DAC_OVERRIDE", | |
| "CAP_DAC_READ_SEARCH", | |
| "CAP_FOWNER", | |
| "CAP_FSETID", | |
| "CAP_KILL", | |
| "CAP_SETGID", | |
| "CAP_SETUID", | |
| "CAP_SETPCAP", | |
| "CAP_LINUX_IMMUTABLE", | |
| "CAP_NET_BIND_SERVICE", | |
| "CAP_NET_BROADCAST", | |
| "CAP_NET_ADMIN", | |
| "CAP_NET_RAW", | |
| "CAP_IPC_LOCK", | |
| "CAP_IPC_OWNER", | |
| "CAP_SYS_MODULE", | |
| "CAP_SYS_RAWIO", | |
| "CAP_SYS_CHROOT", | |
| "CAP_SYS_PTRACE", | |
| "CAP_SYS_PACCT", | |
| "CAP_SYS_ADMIN", | |
| "CAP_SYS_BOOT", | |
| "CAP_SYS_NICE", | |
| "CAP_SYS_RESOURCE", | |
| "CAP_SYS_TIME", | |
| "CAP_SYS_TTY_CONFIG", | |
| "CAP_MKNOD", | |
| "CAP_LEASE", | |
| "CAP_AUDIT_WRITE", | |
| "CAP_AUDIT_CONTROL", | |
| "CAP_SETFCAP", | |
| "CAP_MAC_OVERRIDE", | |
| "CAP_MAC_ADMIN", | |
| "CAP_SYSLOG", | |
| "CAP_WAKE_ALARM", | |
| "CAP_BLOCK_SUSPEND", | |
| "CAP_AUDIT_READ" | |
| ], | |
| "BoundingCaps": [ | |
| "CAP_CHOWN", | |
| "CAP_DAC_OVERRIDE", | |
| "CAP_DAC_READ_SEARCH", | |
| "CAP_FOWNER", | |
| "CAP_FSETID", | |
| "CAP_KILL", | |
| "CAP_SETGID", | |
| "CAP_SETUID", | |
| "CAP_SETPCAP", | |
| "CAP_LINUX_IMMUTABLE", | |
| "CAP_NET_BIND_SERVICE", | |
| "CAP_NET_BROADCAST", | |
| "CAP_NET_ADMIN", | |
| "CAP_NET_RAW", | |
| "CAP_IPC_LOCK", | |
| "CAP_IPC_OWNER", | |
| "CAP_SYS_MODULE", | |
| "CAP_SYS_RAWIO", | |
| "CAP_SYS_CHROOT", | |
| "CAP_SYS_PTRACE", | |
| "CAP_SYS_PACCT", | |
| "CAP_SYS_ADMIN", | |
| "CAP_SYS_BOOT", | |
| "CAP_SYS_NICE", | |
| "CAP_SYS_RESOURCE", | |
| "CAP_SYS_TIME", | |
| "CAP_SYS_TTY_CONFIG", | |
| "CAP_MKNOD", | |
| "CAP_LEASE", | |
| "CAP_AUDIT_WRITE", | |
| "CAP_AUDIT_CONTROL", | |
| "CAP_SETFCAP", | |
| "CAP_MAC_OVERRIDE", | |
| "CAP_MAC_ADMIN", | |
| "CAP_SYSLOG", | |
| "CAP_WAKE_ALARM", | |
| "CAP_BLOCK_SUSPEND", | |
| "CAP_AUDIT_READ" | |
| ], | |
| "ExecIDs": [], | |
| "GraphDriver": { | |
| "Name": "overlay", | |
| "Data": { | |
| "LowerDir": "/var/lib/containers/storage/overlay/4ac1727d1865221c51c2a4800f7ffb635fb52df5bf7da2bd71b193b8ce3a8a80/diff:/var/lib/containers/storage/overlay/1d069c0b259b9ff82eacb6a799ec3a2ec62deb8b9b01390ff08c1e52f6ff24fd/diff:/var/lib/containers/storage/overlay/2cd36b90c1197b014515aed7321ddbcae4248053e135dd1f2049c4803aaed3c7/diff:/var/lib/containers/storage/overlay/f659bfaf2e3b922dcc39bb7e9011ea80508c21349fabb8d1ce2ea20525be349b/diff:/var/lib/containers/storage/overlay/1295eae54c9d95bd8e2c7f83df2a90ac3923d89ec44231fd49f31e7a934f9656/diff", | |
| "MergedDir": "/var/lib/containers/storage/overlay/28d558acb7d357fc491c4f0c111d56291183eb953cddf8d193f38108952efc0b/merged", | |
| "UpperDir": "/var/lib/containers/storage/overlay/28d558acb7d357fc491c4f0c111d56291183eb953cddf8d193f38108952efc0b/diff", | |
| "WorkDir": "/var/lib/containers/storage/overlay/28d558acb7d357fc491c4f0c111d56291183eb953cddf8d193f38108952efc0b/work" | |
| } | |
| }, | |
| "Mounts": [ | |
| { | |
| "Type": "bind", | |
| "Name": "", | |
| "Source": "/var/srv/dnsmasq.conf", | |
| "Destination": "/etc/dnsmasq.conf", | |
| "Driver": "", | |
| "Mode": "", | |
| "Options": [ | |
| "rbind" | |
| ], | |
| "RW": true, | |
| "Propagation": "rprivate" | |
| } | |
| ], | |
| "Dependencies": [], | |
| "NetworkSettings": { | |
| "EndpointID": "", | |
| "Gateway": "10.88.0.1", | |
| "IPAddress": "10.88.0.8", | |
| "IPPrefixLen": 16, | |
| "IPv6Gateway": "", | |
| "GlobalIPv6Address": "", | |
| "GlobalIPv6PrefixLen": 0, | |
| "MacAddress": "42:a1:65:63:6f:b5", | |
| "Bridge": "", | |
| "SandboxID": "", | |
| "HairpinMode": false, | |
| "LinkLocalIPv6Address": "", | |
| "LinkLocalIPv6PrefixLen": 0, | |
| "Ports": [ | |
| { | |
| "hostPort": 53, | |
| "containerPort": 53, | |
| "protocol": "udp", | |
| "hostIP": "" | |
| } | |
| ], | |
| "SandboxKey": "/var/run/netns/cni-4c4436a1-f402-0c17-5d33-9a8ed5abe540" | |
| }, | |
| "ExitCommand": [ | |
| "/usr/bin/podman", | |
| "--root", | |
| "/var/lib/containers/storage", | |
| "--runroot", | |
| "/var/run/containers/storage", | |
| "--log-level", | |
| "error", | |
| "--cgroup-manager", | |
| "systemd", | |
| "--tmpdir", | |
| "/var/run/libpod", | |
| "--runtime", | |
| "runc", | |
| "--storage-driver", | |
| "overlay", | |
| "--events-backend", | |
| "file", | |
| "container", | |
| "cleanup", | |
| "ed3a4be3023326f4b639f373913d87391cb28747f9fdffa8ff544ca908dc720f" | |
| ], | |
| "Namespace": "", | |
| "IsInfra": false, | |
| "Config": { | |
| "Hostname": "ed3a4be30233", | |
| "Domainname": "", | |
| "User": "", | |
| "AttachStdin": false, | |
| "AttachStdout": false, | |
| "AttachStderr": false, | |
| "Tty": false, | |
| "OpenStdin": false, | |
| "StdinOnce": false, | |
| "Env": [ | |
| "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", | |
| "TERM=xterm", | |
| "HOSTNAME=ed3a4be30233", | |
| "container=oci", | |
| "HOME=/root" | |
| ], | |
| "Cmd": null, | |
| "Image": "quay.io/crcont/dnsmasq:latest", | |
| "Volumes": null, | |
| "WorkingDir": "/", | |
| "Entrypoint": "/usr/sbin/dnsmasq --keep-in-foreground", | |
| "OnBuild": null, | |
| "Labels": { | |
| "architecture": "x86_64", | |
| "authoritative-source-url": "registry.access.redhat.com", | |
| "build-date": "2020-01-29T19:39:39.620378", | |
| "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": "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.", | |
| "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": "ubi8", | |
| "release": "397", | |
| "summary": "Provides the latest release of Red Hat Universal Base Image 8.", | |
| "url": "https://access.redhat.com/containers/#/registry.access.redhat.com/ubi8/images/8.1-397", | |
| "vcs-ref": "26f36bfa3e3a04c8c866b250924c1aefc34f01c9", | |
| "vcs-type": "git", | |
| "vendor": "Red Hat, Inc.", | |
| "version": "8.1" | |
| }, | |
| "Annotations": { | |
| "io.container.manager": "libpod", | |
| "io.kubernetes.cri-o.Created": "2020-09-20T06:28:57.900735714Z", | |
| "io.kubernetes.cri-o.TTY": "false", | |
| "io.podman.annotations.autoremove": "FALSE", | |
| "io.podman.annotations.init": "FALSE", | |
| "io.podman.annotations.privileged": "TRUE", | |
| "io.podman.annotations.publish-all": "FALSE", | |
| "org.opencontainers.image.stopSignal": "15" | |
| }, | |
| "StopSignal": 15, | |
| "CreateCommand": [ | |
| "podman", | |
| "run", | |
| "--ip", | |
| "10.88.0.8", | |
| "--name", | |
| "dnsmasq", | |
| "-v", | |
| "/var/srv/dnsmasq.conf:/etc/dnsmasq.conf", | |
| "-p", | |
| "53:53/udp", | |
| "--privileged", | |
| "-d", | |
| "quay.io/crcont/dnsmasq:latest" | |
| ] | |
| }, | |
| "HostConfig": { | |
| "Binds": [ | |
| "/var/srv/dnsmasq.conf:/etc/dnsmasq.conf:rw,rprivate,rbind" | |
| ], | |
| "ContainerIDFile": "", | |
| "LogConfig": { | |
| "Type": "k8s-file", | |
| "Config": null | |
| }, | |
| "NetworkMode": "default", | |
| "PortBindings": { | |
| "53/udp": [ | |
| { | |
| "HostIp": "", | |
| "HostPort": "53" | |
| } | |
| ] | |
| }, | |
| "RestartPolicy": { | |
| "Name": "", | |
| "MaximumRetryCount": 0 | |
| }, | |
| "AutoRemove": false, | |
| "VolumeDriver": "", | |
| "VolumesFrom": null, | |
| "CapAdd": [], | |
| "CapDrop": [], | |
| "Dns": [], | |
| "DnsOptions": [], | |
| "DnsSearch": [], | |
| "ExtraHosts": [], | |
| "GroupAdd": [], | |
| "IpcMode": "", | |
| "Cgroup": "", | |
| "Cgroups": "default", | |
| "Links": null, | |
| "OomScoreAdj": 0, | |
| "PidMode": "", | |
| "Privileged": true, | |
| "PublishAllPorts": false, | |
| "ReadonlyRootfs": false, | |
| "SecurityOpt": [], | |
| "Tmpfs": {}, | |
| "UTSMode": "", | |
| "UsernsMode": "", | |
| "ShmSize": 65536000, | |
| "Runtime": "oci", | |
| "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": [], | |
| "DiskQuota": 0, | |
| "KernelMemory": 0, | |
| "MemoryReservation": 0, | |
| "MemorySwap": 0, | |
| "MemorySwappiness": -1, | |
| "OomKillDisable": false, | |
| "PidsLimit": 4096, | |
| "Ulimits": [ | |
| { | |
| "Name": "RLIMIT_NOFILE", | |
| "Soft": 1048576, | |
| "Hard": 1048576 | |
| }, | |
| { | |
| "Name": "RLIMIT_NPROC", | |
| "Soft": 4194304, | |
| "Hard": 4194304 | |
| } | |
| ], | |
| "CpuCount": 0, | |
| "CpuPercent": 0, | |
| "IOMaximumIOps": 0, | |
| "IOMaximumBandwidth": 0 | |
| } | |
| } | |
| ] |
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result's of CRC for Linux.