【Kubernetes系列】kubeadm reset初始化前后空间、内存使用情况对比

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一、reset 前

[[email protected] ~]# df -h

Filesystem      Size  Used Avail Use% Mounted on
devtmpfs         16G     0   16G   0% /dev
tmpfs            16G     0   16G   0% /dev/shm
tmpfs            16G  1.6G   15G  11% /run
tmpfs            16G     0   16G   0% /sys/fs/cgroup
/dev/sda5        71G   39G   33G  55% /
/dev/sda2      1014M  207M  808M  21% /boot
overlay          71G   39G   33G  55% /var/lib/docker/overlay2/220e3aafa79314809f2aec36a787336f0f6666e62fbe04057309c645f3ae957e/merged
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/1ad4807f76e8b92a0e5025b3a9ba5bfb7ee8f90aace57a4f549ea6e779cead94/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/1ad4807f76e8b92a0e5025b3a9ba5bfb7ee8f90aace57a4f549ea6e779cead94/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/df2b6759b7214efe267316eee7807451245212cebb883935fa8f7677859fdf85/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/df2b6759b7214efe267316eee7807451245212cebb883935fa8f7677859fdf85/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/d01ee66e162dc59e6b5b480c73d17fc54d3a98478935eec61f19180b3a17ad7e/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/d01ee66e162dc59e6b5b480c73d17fc54d3a98478935eec61f19180b3a17ad7e/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/523589b56ae486846677c94e4a8b6b166a269277390286d23a1d31d5239f2cd2/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/523589b56ae486846677c94e4a8b6b166a269277390286d23a1d31d5239f2cd2/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/94e4a14ba7ab9431d6bdfe23dd383a1f2861ccc304c8d6969a5c7a499042de4f/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/d596910db8fa3fd5ffe55a66a96952e032e0b97e0a64051c5fba3e9830cd7261/rootfs
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/8da46747-c8f6-4829-8402-03ca122f8c7a/volumes/kubernetes.io~projected/kube-api-access-r9qnf
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/c2ceab7a-8f04-47fa-9a9c-a93e44c4922a/volumes/kubernetes.io~projected/kube-api-access-x5qw9
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/c576c482-f6c9-4265-9d21-c41b8a8f1f70/volumes/kubernetes.io~projected/kube-api-access-v8h4z
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/4a1e04f3-be3d-4a40-962a-c050620d93ac/volumes/kubernetes.io~projected/kube-api-access-9s8b9
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/65bb284b-44e1-46a9-bdc7-35c9d2f765e8/volumes/kubernetes.io~projected/kube-api-access-8n74t
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/f60cb140-cb6f-4e0e-8c35-12c2155cf9f7/volumes/kubernetes.io~projected/kube-api-access-96lqk
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/457ff2a8-8647-4f90-9fb1-b33c42c66995/volumes/kubernetes.io~projected/kube-api-access-w69qn
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/ffc52f56-402a-47a8-91b6-8f898c19a8f8/volumes/kubernetes.io~projected/kube-api-access-tcjld
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/fe844b85-4d78-4514-a245-fcb2d2e3aa51/volumes/kubernetes.io~projected/kube-api-access-c9kr2
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/f31b599c-4373-4dfd-898f-b8c2065ce412/volumes/kubernetes.io~projected/kube-api-access-4kpd7
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/f868bbcb-489d-4446-a58b-2e1fb594f17c/volumes/kubernetes.io~projected/kube-api-access-f8mvv
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/0199a4337cca4ba37816a1462828961e36a65442af41799abb38e057f46178dc/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/0199a4337cca4ba37816a1462828961e36a65442af41799abb38e057f46178dc/rootfs
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/b2d0d17a-ed2a-4cc6-ab11-477bb9892b05/volumes/kubernetes.io~projected/kube-api-access-9rfmf
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/855b1971-e387-4699-8abf-01cb13643861/volumes/kubernetes.io~projected/kube-api-access-pqkjw
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/67fd2905-d157-4924-8fc9-6546e7aa5d1b/volumes/kubernetes.io~projected/kube-api-access-cvjpf
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/bf68651f-77d6-4d55-8bff-fa58e69ad9a7/volumes/kubernetes.io~projected/kube-api-access-lqjl7
tmpfs           170M   12K  170M   1% /var/lib/kubelet/pods/d8ffed59-5fe4-4a94-a67c-f1a69359d264/volumes/kubernetes.io~projected/kube-api-access-cj2zd
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/62d326c2-0e56-46cb-9a96-93a29671c239/volumes/kubernetes.io~projected/kube-api-access-q2m2v
tmpfs           170M   12K  170M   1% /var/lib/kubelet/pods/a6c9bd20-a63c-4d0e-8b73-4cf76c4475d8/volumes/kubernetes.io~projected/kube-api-access-grvmd
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/a5269668-69d9-4b0d-a97b-d8928f3f556c/volumes/kubernetes.io~projected/kube-api-access-n9hk8
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/69e0ee39-f44f-4088-99f2-c5871184712f/volumes/kubernetes.io~projected/kube-api-access-25wx7
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/ca2a45d2002bd5422d5c6d06f897dbff9df5f02f53f62f3e3340945c0884c437/rootfs
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/573f13ca-b947-4734-a05d-016f0060280d/volumes/kubernetes.io~projected/kube-api-access-67p8q
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/4d5ed69a30b333d5280a3a44f0ab167b02a6697f0f58c3e8a8a445be9f7e815e/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/4d5ed69a30b333d5280a3a44f0ab167b02a6697f0f58c3e8a8a445be9f7e815e/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/e507493d2d08a21913138986b1f4deff02e4d94098da2c1fb118f9b948746025/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/cdec3deb813fc39139b963a2370794a2be642387e3b022033893fd5feb0b5e5f/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/cdec3deb813fc39139b963a2370794a2be642387e3b022033893fd5feb0b5e5f/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/511770b9d32f326137708e8185dbd35d633848d59fc54e37a4fa8960df36c962/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/e21d7d6f47ed68fa84ebc2d832cffe0d57e513d7b17bd8c03df73ca04632b8cc/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/e21d7d6f47ed68fa84ebc2d832cffe0d57e513d7b17bd8c03df73ca04632b8cc/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/18b8c6592ff6b5609368fb71b9358c06f6b334b07543e5ee62ac307ad1650e22/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/18b8c6592ff6b5609368fb71b9358c06f6b334b07543e5ee62ac307ad1650e22/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/0ddae74e412bd7dce08eeae2c138aff763862e8d0f74e7eddd089bd5aad85ea9/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/0ddae74e412bd7dce08eeae2c138aff763862e8d0f74e7eddd089bd5aad85ea9/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/4650edbd24d03c819b60ef666121b1f668459022dfa00ae6f617802d8f1d4ec5/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/581018363eaba8ac62b35862405cf905d47550232f1a8870304fce95efeb5f2c/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/581018363eaba8ac62b35862405cf905d47550232f1a8870304fce95efeb5f2c/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/66dd7521961e8de20482a11326da5e5cd85f33462a213965f0aaf84927ea4bd2/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/66dd7521961e8de20482a11326da5e5cd85f33462a213965f0aaf84927ea4bd2/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/7be097b31a261a290016ca19781d65af0863f2dca85fb2a3b6ba41a86b9fde05/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/7be097b31a261a290016ca19781d65af0863f2dca85fb2a3b6ba41a86b9fde05/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/18fd5ce794292133b226f43925a50fc629e185a2a82f873e951e5409923c0422/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/90f0b0312833e9329ea7ccfdf8455c7333607c6a6ad0381220146d9c81d6ad51/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/1baadbbfeb2d3c7a7d851cd36bef1512d3657ae0b12aafed133c1877b397c6e9/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/1baadbbfeb2d3c7a7d851cd36bef1512d3657ae0b12aafed133c1877b397c6e9/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/b91531b02782930f8fed3e265f527b84bdd3ec746b6149567f0abb761edac84d/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/979a9130555aecd397d4f02542aa841775d607a21730ba1893cf63d4bde8bd6f/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/979a9130555aecd397d4f02542aa841775d607a21730ba1893cf63d4bde8bd6f/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/67eb5c503d6a52871172428e8ae2b993c92c2fc834210ed542a5a8dcb46d6c5b/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/67eb5c503d6a52871172428e8ae2b993c92c2fc834210ed542a5a8dcb46d6c5b/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/5ef567441d5783e6b1e8f9159ceb00009e0e4fa5cc0208fc2611ebfbce83c98a/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/05fb7cecf32f053d5fd905a7ee127eab897051ff306004330898e0a5b6822383/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/05fb7cecf32f053d5fd905a7ee127eab897051ff306004330898e0a5b6822383/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/ed4ad5ad60df41d3ba66179be207714e9f4589f16303621f6c9babd434a49ce6/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/37a8187103eee9a8fd1f5bce324dfb4e3ce65fdf5537d4eb2631fcdba60ad7ea/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/37a8187103eee9a8fd1f5bce324dfb4e3ce65fdf5537d4eb2631fcdba60ad7ea/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/7e4283dbb869a5758e40f0ae6d73bfe6a09ad53fb8f0816ce36cc7df541c83a7/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/7e4283dbb869a5758e40f0ae6d73bfe6a09ad53fb8f0816ce36cc7df541c83a7/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/dff5957e27a214c5dc26eef534e16aaaabd9bbbb895880755c4a9789d20f5e0d/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/dff5957e27a214c5dc26eef534e16aaaabd9bbbb895880755c4a9789d20f5e0d/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/4fb7b830b3e66cd191dd7f6cb0f794a88caafffedbdeb8ccffca6ed26fd34515/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/4fb7b830b3e66cd191dd7f6cb0f794a88caafffedbdeb8ccffca6ed26fd34515/rootfs
shm              64M  152K   64M   1% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/8a002b942f10d7b386e6404c38c6a5f99d64818dfe4d30f33cfd490935cd633a/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/8a002b942f10d7b386e6404c38c6a5f99d64818dfe4d30f33cfd490935cd633a/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/7f4a64361c4d30faf384a3bf949c0fa6df8114a4657c19440e6470a67c66c3df/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/906af9a7cc51f8704331560bdc53e3cd2e1cef36df158f13f60aad01bbf49804/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/906af9a7cc51f8704331560bdc53e3cd2e1cef36df158f13f60aad01bbf49804/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/ae5b9cc021c94bf7a01e4c82ca4f4a9a481a515d08dfefd26b34399d22f79fee/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/e64a4fb9eaa0395ea6c16d2697896cc4ef11f461afd277038300aea05cb904b7/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/5823dd0241a2aa29df55ea5013a1270ed46fcc1087748ee12ef165272d0c0636/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/7642ce417d0a0d1792716be37f90b3a3dab10fd14375b471819f1b842a4d2c30/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/25d38e1f7da2a609ab7c902478e9b5f725294f7f65461af9cd511d51f25c8126/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/136a5c8e56e4b744f8ced0186c6638ebb3c02de1e8617fde6328ca927af467a1/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/d96b623fd80ca099bf7080671c4470fee5bbcc7686112cde884b1dcafb0e1839/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/cfdd6e6c253a65738498432fe0e845c68170d2864f49baa74a3d5b0d00fed62b/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/413191702e2ec7e5a1ff779a7b6b5c17566e0455382d8f2a9e0037fc95781984/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/df9354f0190a41409774b7716746b2ef647f0b3a42ea3a43475961bf31fb8011/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/f38d0050bef2a4838f3f869477d5c65992029761e04c46523d13a1b5be23443b/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/843cbff9c75d3f2b7a4c2fa1b6515fc4602fa3df4787a8dfe1c0f7fe076dfc86/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/2262bab10918eaf1c9fd3cdc8241004a9c86826ebb5421f3529dbde6c8815184/rootfs
tmpfs            32G     0   32G   0% /var/lib/kubelet/pods/a38adfd4-8b46-400f-a5cd-a2ac64bb31d9/volumes/kubernetes.io~secret/kubernetes-dashboard-certs
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/a38adfd4-8b46-400f-a5cd-a2ac64bb31d9/volumes/kubernetes.io~projected/kube-api-access-8dlnt
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/d5e09cea-daf8-47db-9209-9772d272204c/volumes/kubernetes.io~projected/kube-api-access-wx4qm
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/7484d03d424ec493ff420fae0a0fd54a6db5aafe4af6c93f8abbcadeb07b17d3/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/7484d03d424ec493ff420fae0a0fd54a6db5aafe4af6c93f8abbcadeb07b17d3/rootfs
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/68a37e530c5f178dc07fbdcfd147f4de2670275308d0fdeda5433259a4188182/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/68a37e530c5f178dc07fbdcfd147f4de2670275308d0fdeda5433259a4188182/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/3a657e4b1cc8ad6b02c00a2af1c34cdec4989c5ef0413c1b74bf5d925c3c8680/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/537a76f792d41f76d442ea30deb184721f19b903352a59cf3fa104535c864490/rootfs
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/2143401f-b888-49ed-976d-8c49628132b5/volumes/kubernetes.io~projected/kube-api-access-cwhc2
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/0a51a932bd6fd7dfad8fc8e78ba11a49004c8d37e61ecb30af6b2a210d7cb27e/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/0a51a932bd6fd7dfad8fc8e78ba11a49004c8d37e61ecb30af6b2a210d7cb27e/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/b74d50e2af8a4692644ef0348dfdcb1e2cc330f8002c6718f41eb7501bb234b0/rootfs
tmpfs            32G   12K   32G   1% /var/lib/kubelet/pods/b183caff-4484-4ddf-acbd-01576be4fc71/volumes/kubernetes.io~projected/kube-api-access-9kl4m
shm              64M     0   64M   0% /run/containerd/io.containerd.grpc.v1.cri/sandboxes/526c25cb44a42830a6bbc00562c1c3a146cc1074f1c080286cda444fd19994ec/shm
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/526c25cb44a42830a6bbc00562c1c3a146cc1074f1c080286cda444fd19994ec/rootfs
overlay          71G   39G   33G  55% /run/containerd/io.containerd.runtime.v2.task/k8s.io/79cf3091f6ee63e5d0ad87afb9f5e218d5036d4ac6709be5dcabe414da85dd28/rootfs
tmpfs           3.2G     0  3.2G   0% /run/user/0

[[email protected] ~]# free -h

              total        used        free      shared  buff/cache   available
Mem:           31Gi        23Gi       261Mi       1.6Gi       7.4Gi       5.5Gi
Swap:            0B          0B          0B

[[email protected] ~]# kubectl get pod --all-namespaces

NAMESPACE              NAME                                        READY   STATUS      RESTARTS         AGE
default                jms-k8s-jumpserver-jms-init-db-68stn        0/1     Completed   0                5d1h
kube-system            calico-kube-controllers-56cdb7c587-hw9s9    1/1     Running     2 (8d ago)       9d
kube-system            calico-node-kvw68                           1/1     Running     15 (8d ago)      9d
kube-system            coredns-74586cf9b6-mnsrh                    1/1     Running     7 (7d23h ago)    16d
kube-system            coredns-74586cf9b6-tb2qm                    0/1     Completed   5                16d
kube-system            etcd-master01                               1/1     Running     11 (7d23h ago)   16d
kube-system            kube-apiserver-master01                     1/1     Running     10 (7d23h ago)   16d
kube-system            kube-controller-manager-master01            1/1     Running     26 (8d ago)      16d
kube-system            kube-proxy-p84s2                            1/1     Running     7 (7d23h ago)    16d
kube-system            kube-scheduler-master01                     1/1     Running     25 (8d ago)      16d
kube-system            metrics-server-c5ddcc77d-sjgtn              0/1     Completed   3                13d
kubernetes-dashboard   dashboard-metrics-scraper-8c47d4b5d-6qv5l   1/1     Running     0                8d
kubernetes-dashboard   kubernetes-dashboard-5676d8b865-dmkvq       1/1     Running     0                8d
...

二、reset 后

[[email protected] kubernetes]# kubeadm reset

[reset] Reading configuration from the cluster...
[reset] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
W0701 16:51:13.483568 3296432 preflight.go:55] [reset] WARNING: Changes made to this host by 'kubeadm init' or 'kubeadm join' will be reverted.
[reset] Are you sure you want to proceed? [y/N]: 

[[email protected] kubernetes]# df -h

Filesystem      Size  Used Avail Use% Mounted on
devtmpfs         16G     0   16G   0% /dev
tmpfs            16G     0   16G   0% /dev/shm
tmpfs            16G  1.6G   15G  11% /run
tmpfs            16G     0   16G   0% /sys/fs/cgroup
/dev/sda5        71G   36G   36G  51% /
/dev/sda2      1014M  207M  808M  21% /boot
overlay          71G   36G   36G  51% /var/lib/docker/overlay2/220e3aafa79314809f2aec36a787336f0f6666e62fbe04057309c645f3ae957e/merged
tmpfs           3.2G     0  3.2G   0% /run/user/0

[[email protected] kubernetes]# free -h

              total        used        free      shared  buff/cache   available
Mem:           31Gi       3.4Gi        21Gi       1.6Gi       6.0Gi        25Gi
Swap:            0B          0B          0B