minikube start --driver=docker | Template parsing error: template: :1: unexpected "=" in operand

[AbhishekPrathi]

1.minikube start --driver=docker

Full output of minikube start command used, if not already included:
minikube v1.16.0 on Centos 7.9.2009 (xen/amd64)

• Using the docker driver based on user configuration
• Starting control plane node minikube in cluster minikube
• Pulling base image ...
• Downloading Kubernetes v1.20.0 preload ...

  preloaded-images-k8s-v8-v1....: 491.00 MiB / 491.00 MiB 100.00% 54.33 Mi

• Creating docker container (CPUs=2, Memory=2200MB) ...
• Preparing Kubernetes v1.20.0 on Docker 20.10.0 ...| E1223 20:26:36.031325 3270 start.go:99] Unable to get host IP: network inspect: docker network inspect minikube --format "{"Name": "{{.Name}}","Driver": "{{.Driver}}","Subnet": "{{range .IPAM.Config}}{{.Subnet}}{{end}}","Gateway": "{{range .IPAM.Config}}{{.Gateway}}{{end}}","MTU": {{(index .Options "com.docker.network.driver.mtu")}},{{$first := true}} "ContainerIPs": [{{range $k,$v := .Containers }}{{if $first}}{{$first = false}}{{else}}, {{end}}"{{$v.IPv4Address}}"{{end}}]}": exit status 64
  stdout:

stderr:
Template parsing error: template: :1: unexpected "=" in operand
E1223 20:26:36.034203 3270 out.go:322] unable to execute Failed to setup kubeconfig: network inspect: docker network inspect minikube --format "{"Name": "{{.Name}}","Driver": "{{.Driver}}","Subnet": "{{range .IPAM.Config}}{{.Subnet}}{{end}}","Gateway": "{{range .IPAM.Config}}{{.Gateway}}{{end}}","MTU": {{(index .Options "com.docker.network.driver.mtu")}},{{$first := true}} "ContainerIPs": [{{range $k,$v := .Containers }}{{if $first}}{{$first = false}}{{else}}, {{end}}"{{$v.IPv4Address}}"{{end}}]}": exit status 64
stdout:

stderr:
Template parsing error: template: :1: unexpected "=" in operand
: template: Failed to setup kubeconfig: network inspect: docker network inspect minikube --format "{"Name": "{{.Name}}","Driver": "{{.Driver}}","Subnet": "{{range .IPAM.Config}}{{.Subnet}}{{end}}","Gateway": "{{range .IPAM.Config}}{{.Gateway}}{{end}}","MTU": {{(index .Options "com.docker.network.driver.mtu")}},{{$first := true}} "ContainerIPs": [{{range $k,$v := .Containers }}{{if $first}}{{$first = false}}{{else}}, {{end}}"{{$v.IPv4Address}}"{{end}}]}": exit status 64
stdout:

stderr:
Template parsing error: template: :1: unexpected "=" in operand
:1:250: executing "Failed to setup kubeconfig: network inspect: docker network inspect minikube --format "{"Name": "{{.Name}}","Driver": "{{.Driver}}","Subnet": "{{range .IPAM.Config}}{{.Subnet}}{{end}}","Gateway": "{{range .IPAM.Config}}{{.Gateway}}{{end}}","MTU": {{(index .Options "com.docker.network.driver.mtu")}},{{$first := true}} "ContainerIPs": [{{range $k,$v := .Containers }}{{if $first}}{{$first = false}}{{else}}, {{end}}"{{$v.IPv4Address}}"{{end}}]}": exit status 64\nstdout:\n\nstderr:\nTemplate parsing error: template: :1: unexpected "=" in operand\n" at <index .Options "com.docker.network.driver.mtu">: error calling index: index of untyped nil - returning raw string.

X Exiting due to GUEST_START: Failed to setup kubeconfig: network inspect: docker network inspect minikube --format "{"Name": "{{.Name}}","Driver": "{{.Driver}}","Subnet": "{{range .IPAM.Config}}{{.Subnet}}{{end}}","Gateway": "{{range .IPAM.Config}}{{.Gateway}}{{end}}","MTU": {{(index .Options "com.docker.network.driver.mtu")}},{{$first := true}} "ContainerIPs": [{{range $k,$v := .Containers }}{{if $first}}{{$first = false}}{{else}}, {{end}}"{{$v.IPv4Address}}"{{end}}]}": exit status 64
stdout:

stderr:
Template parsing error: template: :1: unexpected "=" in operand

• If the above advice does not help, please let us know:
  • https://github.com/kubernetes/minikube/issues/new/choose

Optional: Full output of minikube logs command:

* ==> Docker <== * -- Logs begin at Wed 2020-12-23 20:46:33 UTC, end at Wed 2020-12-23 20:55:14 UTC. -- * Dec 23 20:46:59 minikube systemd[1]: Starting Docker Application Container Engine... * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.740609235Z" level=info msg="Starting up" * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.741886009Z" level=info msg="parsed scheme: \"unix\"" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.741912249Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.741939184Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0 }] }" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.741956527Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.743831727Z" level=info msg="parsed scheme: \"unix\"" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.743853035Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.743868903Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0 }] }" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.743880472Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.750570463Z" level=info msg="[graphdriver] using prior storage driver: overlay2" * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.773925520Z" level=info msg="Loading containers: start." * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.837442678Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.18.0.0/16. Daemon option --bip can be used to set a preferred IP address" * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.874675158Z" level=info msg="Loading containers: done." * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.894470183Z" level=info msg="Docker daemon" commit=eeddea2 graphdriver(s)=overlay2 version=20.10.0 * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.894578539Z" level=info msg="Daemon has completed initialization" * Dec 23 20:46:59 minikube dockerd[249]: time="2020-12-23T20:46:59.916729026Z" level=info msg="API listen on /run/docker.sock" * Dec 23 20:47:01 minikube systemd[1]: Started Docker Application Container Engine. * Dec 23 20:47:02 minikube systemd[1]: /lib/systemd/system/docker.service:13: Unknown key name 'StartLimitIntervalSec' in section 'Service', ignoring. * Dec 23 20:47:02 minikube systemd[1]: docker.service: Current command vanished from the unit file, execution of the command list won't be resumed. * Dec 23 20:47:03 minikube systemd[1]: /lib/systemd/system/docker.service:13: Unknown key name 'StartLimitIntervalSec' in section 'Service', ignoring. * Dec 23 20:47:04 minikube systemd[1]: /lib/systemd/system/docker.service:13: Unknown key name 'StartLimitIntervalSec' in section 'Service', ignoring. * Dec 23 20:47:04 minikube systemd[1]: /lib/systemd/system/docker.service:13: Unknown key name 'StartLimitIntervalSec' in section 'Service', ignoring. * Dec 23 20:47:04 minikube systemd[1]: Stopping Docker Application Container Engine... * Dec 23 20:47:04 minikube dockerd[249]: time="2020-12-23T20:47:04.179881446Z" level=info msg="Processing signal 'terminated'" * Dec 23 20:47:04 minikube dockerd[249]: time="2020-12-23T20:47:04.181055981Z" level=info msg="stopping event stream following graceful shutdown" error="" module=libcontainerd namespace=moby * Dec 23 20:47:04 minikube dockerd[249]: time="2020-12-23T20:47:04.181556488Z" level=info msg="Daemon shutdown complete" * Dec 23 20:47:04 minikube systemd[1]: docker.service: Succeeded. * Dec 23 20:47:04 minikube systemd[1]: Stopped Docker Application Container Engine. * Dec 23 20:47:04 minikube systemd[1]: Starting Docker Application Container Engine... * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.250451959Z" level=info msg="Starting up" * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.252327130Z" level=info msg="parsed scheme: \"unix\"" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.252371393Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.252402356Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0 }] }" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.252424577Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.255501354Z" level=info msg="parsed scheme: \"unix\"" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.255530390Z" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.255550312Z" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0 }] }" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.255569593Z" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.267526692Z" level=info msg="[graphdriver] using prior storage driver: overlay2" * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.274372445Z" level=info msg="Loading containers: start." * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.361867553Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.18.0.0/16. Daemon option --bip can be used to set a preferred IP address" * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.399091623Z" level=info msg="Loading containers: done." * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.417562625Z" level=info msg="Docker daemon" commit=eeddea2 graphdriver(s)=overlay2 version=20.10.0 * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.417632815Z" level=info msg="Daemon has completed initialization" * Dec 23 20:47:04 minikube systemd[1]: Started Docker Application Container Engine. * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.440379501Z" level=info msg="API listen on [::]:2376" * Dec 23 20:47:04 minikube dockerd[407]: time="2020-12-23T20:47:04.446159408Z" level=info msg="API listen on /var/run/docker.sock" * Dec 23 20:47:05 minikube systemd[1]: /lib/systemd/system/docker.service:13: Unknown key name 'StartLimitIntervalSec' in section 'Service', ignoring. * * ==> container status <== * CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES * time="2020-12-23T20:55:16Z" level=fatal msg="failed to connect: failed to connect, make sure you are running as root and the runtime has been started: context deadline exceeded" * * ==> describe nodes <== E1223 20:55:16.909676 16892 logs.go:181] command /bin/bash -c "sudo /var/lib/minikube/binaries/v1.20.0/kubectl describe nodes --kubeconfig=/var/lib/minikube/kubeconfig" failed with error: /bin/bash -c "sudo /var/lib/minikube/binaries/v1.20.0/kubectl describe nodes --kubeconfig=/var/lib/minikube/kubeconfig": Process exited with status 1 stdout:

stderr:
error: stat /var/lib/minikube/kubeconfig: no such file or directory
output: "\n** stderr ** \nerror: stat /var/lib/minikube/kubeconfig: no such file or directory\n\n** /stderr **"
*

• ==> dmesg <==
• [Dec23 20:18] ACPI: RSDP 00000000000ea020 00024 (v02 Xen)
• [ +0.000000] ACPI: XSDT 00000000fc00e2a0 00054 (v01 Xen HVM 00000000 HVML 00000000)
• [ +0.000000] ACPI: FACP 00000000fc00df60 000F4 (v04 Xen HVM 00000000 HVML 00000000)
• [ +0.000000] ACPI: DSDT 00000000fc0021c0 0BD19 (v02 Xen HVM 00000000 INTL 20090123)
• [ +0.000000] ACPI: FACS 00000000fc002180 00040
• [ +0.000000] ACPI: APIC 00000000fc00e060 000D8 (v02 Xen HVM 00000000 HVML 00000000)
• [ +0.000000] ACPI: HPET 00000000fc00e1b0 00038 (v01 Xen HVM 00000000 HVML 00000000)
• [ +0.000000] ACPI: WAET 00000000fc00e1f0 00028 (v01 Xen HVM 00000000 HVML 00000000)
• [ +0.000000] ACPI: SSDT 00000000fc00e220 00031 (v02 Xen HVM 00000000 INTL 20090123)
• [ +0.000000] ACPI: SSDT 00000000fc00e260 00033 (v02 Xen HVM 00000000 INTL 20090123)
• [ +0.000000] Zone ranges:
• [ +0.000000] DMA [mem 0x00001000-0x00ffffff]
• [ +0.000000] DMA32 [mem 0x01000000-0xffffffff]
• [ +0.000000] Normal [mem 0x100000000-0x10fffffff]
• [ +0.000000] Movable zone start for each node
• [ +0.000000] Early memory node ranges
• [ +0.000000] node 0: [mem 0x00001000-0x0009dfff]
• [ +0.000000] node 0: [mem 0x00100000-0xefffffff]
• [ +0.000000] node 0: [mem 0x100000000-0x10fffffff]
• [ +0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 1032072
• [ +0.000000] Policy zone: Normal
• [ +0.000000] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
• [ +0.000000] 4789.01 BogoMIPS (lpj=2394506)
• [ +0.173338] ACPI: All ACPI Tables successfully acquired
• [ +0.103760] cpu 0 spinlock event irq 53
• [ +0.005140] NMI watchdog: disabled (cpu0): hardware events not enabled
• [ +0.058067] ACPI: Enabled 2 GPEs in block 00 to 0F
• [ +0.084710] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
• [ +0.052954] * Found PM-Timer Bug on the chipset. Due to workarounds for a bug,

•           * this clock source is slow. Consider trying other clock sources
  

• [ +0.933453] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
• [ +0.144643] Grant table initialized
• [ +0.005044] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
• [ +2.861878] piix4_smbus 0000:00:01.3: SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr
• [ +9.016741] TECH PREVIEW: Overlay filesystem may not be fully supported.

•           Please review provided documentation for limitations.
  

• ==> kernel <==
• 20:55:16 up 36 min, 0 users, load average: 0.00, 0.05, 0.10
• Linux minikube 3.10.0-1160.6.1.el7.x86_64 Need a reliable and low latency local cluster setup for Kubernetes  #1 SMP Tue Nov 17 13:59:11 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
• PRETTY_NAME="Ubuntu 20.04.1 LTS"
• ==> kubelet <==
• -- Logs begin at Wed 2020-12-23 20:46:33 UTC, end at Wed 2020-12-23 20:55:16 UTC. --
• -- No entries --

! unable to fetch logs for: describe nodes

[AbhishekPrathi]

The issue got resolved with a simple command
docker network rm [NETWORK] and then minikube start --driver=docker