将kubelet指向连接的磁盘

时间：2018-11-14 23:11:55

标签： kubernetes kubelet

我已经使用他们的v1.7.7协调器（不是acs引擎CLI）在Azure上部署了K8s实例（ACS）v1.8.1。我们的VM的默认磁盘（标准磁盘30GiB）正在阻塞我们的Pod，因此我按these instructions将一个高级SSD磁盘（300GiB）附加到了我们的VM。

将kubelet（v1.8.1）指向此新磁盘的正确过程是什么？

我以为我可以编辑/etc/systemd/system/kubelet.service并将其指向该新磁盘，但是这样做时会遇到各种错误，我认为我已经将kubelet压在该实例上，因为还原这些修改并不能使我恢复工作状态。

更新2：
我创建了一个具有单个代理的新集群（ACS），并更新了/etc/systemd/system/docker.service.d/exec_start.conf以将docker指向新连接的磁盘；没有对机器进行任何其他更改。

吊舱尝试启动，但出现“错误同步吊舱”和“吊舱沙箱已更改，它将被杀死并重新创建。”代理上每个pod的错误。

  • Docker已启动并在机器上运行。
  • docker ps显示hyperkube-amd64映像正在运行。
  • docker logs <hyperkube container>显示了一系列有关resolv.conf的错误

Hyperkube容器日志： 

E1126 07:50:23.693679    1897 remote_runtime.go:92] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = rewrite resolv.conf failed for pod "kubernetes-dashboard-86cf46546d-vjzqd": ResolvConfPath "/poddisk/docker/containers/aaa27116bb39092f27ec6723f70be35d9bcb48d66e49811566c19915ff804516/resolv.conf" does not exist
E1126 07:50:23.693744    1897 kuberuntime_sandbox.go:54] CreatePodSandbox for pod "kubernetes-dashboard-86cf46546d-vjzqd_kube-system(1d90eb2e-ee18-11e8-a6f7-000d3a727bf3)" failed: rpc error: code = Unknown desc = rewrite resolv.conf failed for pod "kubernetes-dashboard-86cf46546d-vjzqd": ResolvConfPath "/poddisk/docker/containers/aaa27116bb39092f27ec6723f70be35d9bcb48d66e49811566c19915ff804516/resolv.conf" does not exist
E1126 07:50:23.693781    1897 kuberuntime_manager.go:632] createPodSandbox for pod "kubernetes-dashboard-86cf46546d-vjzqd_kube-system(1d90eb2e-ee18-11e8-a6f7-000d3a727bf3)" failed: rpc error: code = Unknown desc = rewrite resolv.conf failed for pod "kubernetes-dashboard-86cf46546d-vjzqd": ResolvConfPath "/poddisk/docker/containers/aaa27116bb39092f27ec6723f70be35d9bcb48d66e49811566c19915ff804516/resolv.conf" does not exist
E1126 07:50:23.693868    1897 pod_workers.go:182] Error syncing pod 1d90eb2e-ee18-11e8-a6f7-000d3a727bf3 ("kubernetes-dashboard-86cf46546d-vjzqd_kube-system(1d90eb2e-ee18-11e8-a6f7-000d3a727bf3)"), skipping: failed to "CreatePodSandbox" for "kubernetes-dashboard-86cf46546d-vjzqd_kube-system(1d90eb2e-ee18-11e8-a6f7-000d3a727bf3)" with CreatePodSandboxError: "CreatePodSandbox for pod \"kubernetes-dashboard-86cf46546d-vjzqd_kube-system(1d90eb2e-ee18-11e8-a6f7-000d3a727bf3)\" failed: rpc error: code = Unknown desc = rewrite resolv.conf failed for pod \"kubernetes-dashboard-86cf46546d-vjzqd\": ResolvConfPath \"/poddisk/docker/containers/aaa27116bb39092f27ec6723f70be35d9bcb48d66e49811566c19915ff804516/resolv.conf\" does not exist"
I1126 07:50:23.746435    1897 kubelet.go:1871] SyncLoop (PLEG): "kubernetes-dashboard-924040265-sr9v7_kube-system(8af36209-ec52-11e8-b632-000d3a727bf3)", event: &pleg.PodLifecycleEvent{ID:"8af36209-ec52-11e8-b632-000d3a727bf3", Type:"ContainerDied", Data:"410897d41aebe92b0d10a47572405c326228cc845bf8875d4bec27be8dccbf6f"}
W1126 07:50:23.746674    1897 pod_container_deletor.go:77] Container "410897d41aebe92b0d10a47572405c326228cc845bf8875d4bec27be8dccbf6f" not found in pod's containers
I1126 07:50:23.746700    1897 kubelet.go:1871] SyncLoop (PLEG): "kubernetes-dashboard-924040265-sr9v7_kube-system(8af36209-ec52-11e8-b632-000d3a727bf3)", event: &pleg.PodLifecycleEvent{ID:"8af36209-ec52-11e8-b632-000d3a727bf3", Type:"ContainerStarted", Data:"5c32fa4c57009725adfef3df7034fe1dd6166f6e0b56b60be1434f41f33a2f7d"}
I1126 07:50:23.835783    1897 kubelet.go:1871] SyncLoop (PLEG): "kube-dns-v20-765f4cf698-zlms6_kube-system(1d10753c-ee18-11e8-a6f7-000d3a727bf3)", event: &pleg.PodLifecycleEvent{ID:"1d10753c-ee18-11e8-a6f7-000d3a727bf3", Type:"ContainerDied", Data:"192e8df5e196e86235b7d79ecfb14d7ed458ec7709a09115ed8b995fbc90371f"}
W1126 07:50:23.835972    1897 pod_container_deletor.go:77] Container "192e8df5e196e86235b7d79ecfb14d7ed458ec7709a09115ed8b995fbc90371f" not found in pod's containers
I1126 07:50:23.939929    1897 kubelet.go:1871] SyncLoop (PLEG): "kube-dns-v20-3003781527-lw6p9_kube-system(1cf6caec-ee18-11e8-a6f7-000d3a727bf3)", event: &pleg.PodLifecycleEvent{ID:"1cf6caec-ee18-11e8-a6f7-000d3a727bf3", Type:"ContainerDied", Data:"605635bedd890c597a9675c23030d128eadd344e3c73fd5efaba544ce09dfa76"}
W1126 07:50:23.940026    1897 pod_container_deletor.go:77] Container "605635bedd890c597a9675c23030d128eadd344e3c73fd5efaba544ce09dfa76" not found in pod's containers
I1126 07:50:23.951129    1897 kuberuntime_manager.go:401] Sandbox for pod "heapster-342135353-x07fk_kube-system(a9810826-ec52-11e8-b632-000d3a727bf3)" has no IP address.  Need to start a new one
I1126 07:50:24.047879    1897 kuberuntime_manager.go:401] Sandbox for pod "kubernetes-dashboard-924040265-sr9v7_kube-system(8af36209-ec52-11e8-b632-000d3a727bf3)" has no IP address.  Need to start a new one
I1126 07:50:24.137353    1897 kuberuntime_manager.go:401] Sandbox for pod "kube-dns-v20-765f4cf698-zlms6_kube-system(1d10753c-ee18-11e8-a6f7-000d3a727bf3)" has no IP address.  Need to start a new one
I1126 07:50:24.241774    1897 kuberuntime_manager.go:401] Sandbox for pod "kube-dns-v20-3003781527-lw6p9_kube-system(1cf6caec-ee18-11e8-a6f7-000d3a727bf3)" has no IP address.  Need to start a new one
W1126 07:50:24.343902    1897 docker_service.go:333] Failed to retrieve checkpoint for sandbox "ce0304d171adf24619dac12e47914f2e3670d29d26b5bc3bec3358b631ebaf06": checkpoint is not found.

service kubelet status输出： 

● kubelet.service - Kubelet
   Loaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2018-11-22 06:03:42 UTC; 4 days ago
  Process: 1822 ExecStartPre=/sbin/iptables -t nat --list (code=exited, status=0/SUCCESS)
  Process: 1815 ExecStartPre=/sbin/ebtables -t nat --list (code=exited, status=0/SUCCESS)
  Process: 1810 ExecStartPre=/sbin/sysctl -w net.ipv4.tcp_retries2=8 (code=exited, status=0/SUCCESS)
  Process: 1806 ExecStartPre=/bin/mount --make-shared /var/lib/kubelet (code=exited, status=0/SUCCESS)
  Process: 1797 ExecStartPre=/bin/bash -c if [ $(mount | grep "/var/lib/kubelet" | wc -l) -le 0 ] ; then /bin/mount --bind /var/lib/kubelet /var/lib/kubelet ; fi (code=exited, status=0/SUCCESS)
  Process: 1794 ExecStartPre=/bin/mkdir -p /var/lib/kubelet (code=exited, status=0/SUCCESS)
  Process: 1791 ExecStartPre=/bin/bash /opt/azure/containers/kubelet.sh (code=exited, status=0/SUCCESS)
 Main PID: 1828 (docker)
    Tasks: 9
   Memory: 4.2M
      CPU: 5min 9.259s
   CGroup: /system.slice/kubelet.service
           └─1828 /usr/bin/docker run --net=host --pid=host --privileged --rm --volume=/dev:/dev --volume=/sys:/sys:ro --volume=/var/run:/var/run:rw --volume=/var/lib/docker/:/var/lib/docker:rw --volume=/var/lib/kubelet/:/var/lib/kubelet:shared --volume=/var/log:/var/log:rw --volume=/etc/kubernetes/:/etc/kubernetes:ro --volume=/srv/kubernetes/:/srv/kubernetes:ro --volume=/var/lib/waagent/ManagedIdentity-Settings:/var/lib/waagent/ManagedIdentity-Settings:ro gcrio.azureedge.net/google_containers/hyperkube-amd64:v1.8.1 /hyperkube kubelet --kubeconfig=/var/lib/kubelet/kubeconfig --require-kubeconfig --pod-infra-container-image=gcrio.azureedge.net/google_containers/pause-amd64:3.0 --address=0.0.0.0 --allow-privileged=true --enable-server --pod-manifest-path=/etc/kubernetes/manifests --cluster-dns=10.0.0.10 --cluster-domain=cluster.local --node-labels=kubernetes.io/role=agent,agentpool=agent --cloud-provider=azure --cloud-config=/etc/kubernetes/azure.json --azure-container-registry-config=/etc/kubernetes/azure.json --network-plugin=kubenet --max-pods=110 --node-status-update-frequency=10s --image-gc-high-threshold=85 --image-gc-low-threshold=80 --v=2 --feature-gates=Accelerators=true  

Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: W1126 16:52:43.631813    1897 pod_container_deletor.go:77] Container "9e535d1d87c7c52bb154156bed1fbf40e3509ed72c76f0506ad8b6ed20b6c82d" not found in pod's containers
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: I1126 16:52:43.673560    1897 kuberuntime_manager.go:401] Sandbox for pod "kube-dns-v20-3003781527-rn3fz_kube-system(89854e4f-ec52-11e8-b632-000d3a727bf3)" has no IP address.  Need to start a new one
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: I1126 16:52:43.711945    1897 kuberuntime_manager.go:401] Sandbox for pod "kubernetes-dashboard-86cf46546d-vjzqd_kube-system(1d90eb2e-ee18-11e8-a6f7-000d3a727bf3)" has no IP address.  Need to start a new one
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: I1126 16:52:43.783121    1897 kubelet.go:1871] SyncLoop (PLEG): "kube-dns-v20-3003781527-lw6p9_kube-system(1cf6caec-ee18-11e8-a6f7-000d3a727bf3)", event: &pleg.PodLifecycleEvent{ID:"1cf6caec-ee18-11e8-a6f7-000d3a727bf3", Type:"ContainerDied", Data:"26e592abff8bf63a8d9b7a57778dd6768240112a6edafb6de55e7217258d764f"}
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: W1126 16:52:43.783563    1897 pod_container_deletor.go:77] Container "26e592abff8bf63a8d9b7a57778dd6768240112a6edafb6de55e7217258d764f" not found in pod's containers
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: I1126 16:52:43.783591    1897 kubelet.go:1871] SyncLoop (PLEG): "kube-dns-v20-3003781527-lw6p9_kube-system(1cf6caec-ee18-11e8-a6f7-000d3a727bf3)", event: &pleg.PodLifecycleEvent{ID:"1cf6caec-ee18-11e8-a6f7-000d3a727bf3", Type:"ContainerStarted", Data:"2ac43b964e4c7b4172fb6ab0caa0c673c5526fd4947a9760ee390a9d7f78ee14"}
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: W1126 16:52:43.863377    1897 docker_service.go:333] Failed to retrieve checkpoint for sandbox "cfec0b7704e0487ee3122488284adc0520ba1b57a5a8675df8c40deaeee1cf2e": checkpoint is not found.
Nov 26 16:52:43 k8s-agent-CA50C8FA-0 docker[1828]: I1126 16:52:43.935784    1897 kuberuntime_manager.go:401] Sandbox for pod "heapster-342135353-x07fk_kube-system(a9810826-ec52-11e8-b632-000d3a727bf3)" has no IP address.  Need to start a new one
Nov 26 16:52:44 k8s-agent-CA50C8FA-0 docker[1828]: I1126 16:52:44.085925    1897 kuberuntime_manager.go:401] Sandbox for pod "kube-dns-v20-3003781527-lw6p9_kube-system(1cf6caec-ee18-11e8-a6f7-000d3a727bf3)" has no IP address.  Need to start a new one
Nov 26 16:52:44 k8s-agent-CA50C8FA-0 docker[1828]: E1126 16:52:44.394661    1897 summary.go:92] Failed to get system container stats for "/docker/a29aa11ff8933b350e339bb96c02932a78aba63917114e505abd47b89460d453": failed to get cgroup stats for "/docker/a29aa11ff8933b350e339bb96c02932a78aba63917114e505abd47b89460d453": failed to get container info for "/docker/a29aa11ff8933b350e339bb96c02932a78aba63917114e505abd47b89460d453": unknown container "/docker/a29aa11ff8933b350e339bb96c02932a78aba63917114e505abd47b89460d453"

更新1：
根据@Rico的回答，我尝试更新/etc/default/docker，但没有任何效果。然后，我找到并更新了/etc/systemd/system/docker.service.d/exec_start.conf。这导致docker在/kubeletdrive/docker位置重新创建其所有文件。 exec_start.conf现在看起来像这样：

[Service]
ExecStart=
ExecStart=/usr/bin/docker daemon -H fd:// -g /kubeletdrive/docker --storage-driver=overlay2 --bip=172.17.0.1/16

运行service docker status会显示此输出，并且实际上没有一个容器正在创建。我看到有些东西在混合中添加了选项--state-dir /var/run/docker/libcontainerd/containerd，但是我还没有找到这个文件的来源。我认为将其更新到相同位置会解决此问题吗？

docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/docker.service.d
           └─clear_mount_propagation_flags.conf, exec_start.conf
   Active: active (running) since Thu 2018-11-15 06:09:40 UTC; 4 days ago
     Docs: https://docs.docker.com
 Main PID: 1175 (dockerd)
    Tasks: 259
   Memory: 3.4G
      CPU: 1d 15h 9min 15.414s
   CGroup: /system.slice/docker.service
           ├─ 1175 dockerd -H fd:// -g /kubeletdrive/docker --storage-driver=overlay2 --bip=172.17.0.1/16
           ├─ 1305 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --shim docker-containerd-shim --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/containerd --runtime docker-runc
           ├─ 1716 docker-containerd-shim 32387d1bf7a0fc58e26f0146b9a2cb21c7f0d673a730a71007d13cff3505cb5a /var/run/docker/libcontainerd/32387d1bf7a0fc58e26f0146b9a2cb21c7f0d673a730a71007d13cff3505cb5a docker-runc
           ├─ 1837 docker-containerd-shim 73fd1a01f7cb7a2c44f5d40ad0a6136398469e290dc6c554ff66a9971ba3fb1f /var/run/docker/libcontainerd/73fd1a01f7cb7a2c44f5d40ad0a6136398469e290dc6c554ff66a9971ba3fb1f docker-runc
           ├─ 1901 docker-containerd-shim ce674925877ba963b8ba8c85598cdc40137a81a70f996636be4e15d880580b05 /var/run/docker/libcontainerd/ce674925877ba963b8ba8c85598cdc40137a81a70f996636be4e15d880580b05 docker-runc
           ├─20715 docker-containerd-shim 83db148b4e55a8726d40567e7f66d84a9f25262c685a6e0c2dc2f4218b534378 /var/run/docker/libcontainerd/83db148b4e55a8726d40567e7f66d84a9f25262c685a6e0c2dc2f4218b534378 docker-runc
           ├─21047 docker-containerd-shim 4b1acbfcbec5ae3989607b16d59c5552e4bf9a4d88ba5f6d89bb7ef1d612cd63 /var/run/docker/libcontainerd/4b1acbfcbec5ae3989607b16d59c5552e4bf9a4d88ba5f6d89bb7ef1d612cd63 docker-runc
           ├─23319 docker-containerd-shim c24c646afc59573e54be3645bdfb691ce31a108d76052423618fcb767eaa8775 /var/run/docker/libcontainerd/c24c646afc59573e54be3645bdfb691ce31a108d76052423618fcb767eaa8775 docker-runc
           ├─23516 docker-containerd-shim 59e0414a170be175eb66221458e5811e3d8b15a5ed07b146a7be265dcc85e234 /var/run/docker/libcontainerd/59e0414a170be175eb66221458e5811e3d8b15a5ed07b146a7be265dcc85e234 docker-runc
           ├─23954 docker-containerd-shim da267fd3b43a3601b2d4938575bc3529cf174bd1291f2f6696cdc4981293b64f /var/run/docker/libcontainerd/da267fd3b43a3601b2d4938575bc3529cf174bd1291f2f6696cdc4981293b64f docker-runc
           ├─24396 docker-containerd-shim a8f843981f6f24144d52b77b659eb71f4b2bf30df9c6c74154f960e208af4950 /var/run/docker/libcontainerd/a8f843981f6f24144d52b77b659eb71f4b2bf30df9c6c74154f960e208af4950 docker-runc
           ├─26078 docker-containerd-shim 1345ae86c3fc7242bb156785230ebf7bdaa125ba48b849243388aa3d9506bf7e /var/run/docker/libcontainerd/1345ae86c3fc7242bb156785230ebf7bdaa125ba48b849243388aa3d9506bf7e docker-runc
           ├─27100 docker-containerd-shim 0749c242003cfa542ef9868f001335761be53eb3c52df00dcb4fa73f9e94a57b /var/run/docker/libcontainerd/0749c242003cfa542ef9868f001335761be53eb3c52df00dcb4fa73f9e94a57b docker-runc
           ├─28254 docker-containerd-shim 7934ba2701673f7e3c6567e4e35517625d14b97fe9b7846e716c0559a2442241 /var/run/docker/libcontainerd/7934ba2701673f7e3c6567e4e35517625d14b97fe9b7846e716c0559a2442241 docker-runc
           └─29917 docker-containerd-shim 26f8f5963396a478e37aebdacdc0943af188d32dbe5bbe28f3ccc6edef003546 /var/run/docker/libcontainerd/26f8f5963396a478e37aebdacdc0943af188d32dbe5bbe28f3ccc6edef003546 docker-runc

Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.722015704Z" level=error msg="Handler for POST /v1.24/containers/7409f3546ffa9e42da8b6cc694ba37571e908df43bfa2001e449a4cca3c50801/stop returned error: Container 7409f3546ffa9e42da8b6cc694ba37571e908df43bfa2001e449a4cca3c50801 is already stopped"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.759151399Z" level=error msg="Handler for POST /v1.24/containers/ebbeed144e3768758c62749763977b65e4e2b118452bcf342b3f9d79ff0a5362/stop returned error: Container ebbeed144e3768758c62749763977b65e4e2b118452bcf342b3f9d79ff0a5362 is already stopped"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.792131939Z" level=error msg="Handler for POST /v1.24/containers/85ff0f9d9feb893eb87062b00dc0f034ee47e639289a401e1c9f4e2ca7a5a202/stop returned error: Container 85ff0f9d9feb893eb87062b00dc0f034ee47e639289a401e1c9f4e2ca7a5a202 is already stopped"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.830289673Z" level=error msg="Handler for POST /v1.24/containers/dc8f0fbaacfaba68453895996976706581aab817790bb1694f1a15de6cd2861f/stop returned error: Container dc8f0fbaacfaba68453895996976706581aab817790bb1694f1a15de6cd2861f is already stopped"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.830618185Z" level=error msg="Handler for GET /v1.24/containers/702807afde28063ae46e321e86d18861440b691f254df52591c87ff732383467/json returned error: No such container: 702807afde28063ae46e321e86d18861440b691f254df52591c87ff732383467"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.864109644Z" level=error msg="Handler for POST /v1.24/containers/702807afde28063ae46e321e86d18861440b691f254df52591c87ff732383467/stop returned error: No such container: 702807afde28063ae46e321e86d18861440b691f254df52591c87ff732383467"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.874873849Z" level=error msg="Handler for GET /v1.24/containers/6f1f542a4f6bb30f21d0a747d915b458a34a5c6cedc66b301faa32a12a502d0f/json returned error: No such container: 6f1f542a4f6bb30f21d0a747d915b458a34a5c6cedc66b301faa32a12a502d0f"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.898141823Z" level=error msg="Handler for POST /v1.24/containers/816c48d0dd01fb66769cc6275e799e68a1301fc0f6623a0a99558350a414ee7c/stop returned error: Container 816c48d0dd01fb66769cc6275e799e68a1301fc0f6623a0a99558350a414ee7c is already stopped"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.928695972Z" level=error msg="Handler for POST /v1.24/containers/f35a7847f9d2563101337389968f2265e5d0cd8bc78e0a2790a52be7dd3a0f3a/stop returned error: Container f35a7847f9d2563101337389968f2265e5d0cd8bc78e0a2790a52be7dd3a0f3a is already stopped"
Nov 19 16:38:42 k8s-agent-D24C3A06-0 docker[1175]: time="2018-11-19T16:38:42.998395591Z" level=error msg="Handler for POST /v1.24/containers/a9d0acecee28b17992cbd99e8c782513157f0bca57acaa22d5688c07062d3346/stop returned error: Container a9d0acecee28b17992cbd99e8c782513157f0bca57acaa22d5688c07062d3346 is already stopped"

1 个答案:

答案 0 :(得分：2)

如果要更改容器空间，并假设您正在使用Docker（大多数人使用），则必须更改Docker的graph目录。您可以在Docker守护程序上使用-g选项进行操作：

-g /mount/to/your-new-disk

根据您的设置，您也许可以在/etc/defaults/docker文件中对其进行更改。

DOCKER_OPTS="-g /mount/to/your-new-disk"

或者在您的systemctl服务中：

# /lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
...

[Service]
Type=notify
...
ExecStart=/usr/bin/dockerd -H fd:// -g /mount/to/your-new-disk
...
[Install]
WantedBy=multi-user.target

另一种选择是将其添加到/etc/docker/config.json文件中。

如果您使用containerd而不是Docker，则可以在/etc/containerd/config.toml文件中更改root的值。

如果您使用的是CRIO，还可以使用crio.conf中的root选项

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