1、各個主機安裝基礎(chǔ)軟件

1.1拧篮、設(shè)置debian鏡像地址

sed -ri 's/^deb\scdrom:\[Debian.*/#&/' /etc/apt/sources.list
cat <<EOF | tee -a /etc/apt/sources.list
deb http://security.debian.org/debian-security bullseye-security main contrib
deb-src http://security.debian.org/debian-security bullseye-security main contrib
deb https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
EOF

1.2词渤、主機的參數(shù)設(shè)置

# 修改主機名稱，保證節(jié)點主機名不重復(fù)串绩，設(shè)置時區(qū)
timedatectl set-timezone Asia/Shanghai
hostnamectl set-hostname k8s-master

# 關(guān)閉交換區(qū)
swapoff -a
sed -ri 's/.*swap.*/# &/' /etc/fstab


# 關(guān)閉防火墻
service iptables stop
systemctl stop firewalld.service
systemctl disable firewalld.service
ufw disable
iptables -F


# 橋接的ipv4流量轉(zhuǎn)到iptables
cat <<EOF | tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF

modprobe overlay
modprobe br_netfilter

# 設(shè)置所需的 sysctl 參數(shù)缺虐，參數(shù)在重新啟動后保持不變
cat <<EOF | tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF

# 應(yīng)用 sysctl 參數(shù)而不重新啟動
sysctl --system

1.3、安裝kube三件套

rm -rf /home/kubelet/lib /var/lib/kubelet
apt-get update
apt install -y apt-transport-https ca-certificates gnupg gnupg2 gnupg1 curl lsb-release
curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF
apt-get remove -y  --allow-change-held-packages kubelet kubeadm kubectl
apt-get update
apt-get install -y kubelet=1.25.4-00 kubeadm=1.25.4-00 kubectl=1.25.4-00
apt-mark hold kubelet kubeadm kubectl
systemctl enable kubelet.service
systemctl start kubelet.service

mkdir -p /home/kubelet/data /home/kubelet/lib
systemctl stop kubelet
tee /etc/default/kubelet <<-'EOF'
KUBELET_EXTRA_ARGS=--root-dir=/home/kubelet/lib
EOF
systemctl start kubelet

1.4-1礁凡、安裝docker（containerd）

rm -rf /home/docker/lib /var/lib/docker
mkdir -p /home/docker/data /home/docker/lib /home/docker/etc /home/docker/compose

apt-get remove -y --allow-change-held-packages docker docker-engine docker.io containerd runc

apt-get update
apt-get install -y \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
  $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null

chmod a+r /etc/apt/keyrings/docker.gpg
apt-get update

# 查看docker的版本列表:
apt-cache madison docker-ce | awk '{ print $3 }'
# 指定安裝的版本
VERSION_STRING=5:20.10.21~3-0~debian-bullseye
apt-get install -y docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-compose-plugin

systemctl start docker
systemctl enable docker
systemctl stop docker
mv /var/lib/docker /home/docker/lib
ln -s /home/docker/lib/docker /var/lib/docker
systemctl start docker

mkdir -p /etc/docker
# 設(shè)置docker鏡像地址和私有的倉庫地址
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://3ksn895yvz.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2",
  "insecure-registries": ["172.21.16.213"]
}
EOF
systemctl daemon-reload
systemctl restart docker

1.4-2高氮、獨立安裝containerd

apt install containerd
systemctl start containerd
mkdir -p /etc/containerd/
containerd config default > /etc/containerd/config.toml
sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
systemctl enable containerd
systemctl restart containerd

1.5、修改containerd的配置

mkdir -p /etc/containerd/
tee /etc/containerd/config.toml <<-'EOF'
disabled_plugins = []
imports = []
oom_score = 0
plugin_dir = ""
required_plugins = []
root = "/var/lib/containerd"
state = "/run/containerd"
temp = ""
version = 2

[cgroup]
  path = ""

[debug]
  address = ""
  format = ""
  gid = 0
  level = ""
  uid = 0

[grpc]
  address = "/run/containerd/containerd.sock"
  gid = 0
  max_recv_message_size = 16777216
  max_send_message_size = 16777216
  tcp_address = ""
  tcp_tls_ca = ""
  tcp_tls_cert = ""
  tcp_tls_key = ""
  uid = 0

[metrics]
  address = ""
  grpc_histogram = false

[plugins]

  [plugins."io.containerd.gc.v1.scheduler"]
    deletion_threshold = 0
    mutation_threshold = 100
    pause_threshold = 0.02
    schedule_delay = "0s"
    startup_delay = "100ms"

  [plugins."io.containerd.grpc.v1.cri"]
    device_ownership_from_security_context = false
    disable_apparmor = false
    disable_cgroup = false
    disable_hugetlb_controller = true
    disable_proc_mount = false
    disable_tcp_service = true
    enable_selinux = false
    enable_tls_streaming = false
    enable_unprivileged_icmp = false
    enable_unprivileged_ports = false
    ignore_image_defined_volumes = false
    max_concurrent_downloads = 3
    max_container_log_line_size = 16384
    netns_mounts_under_state_dir = false
    restrict_oom_score_adj = false
    sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.8"
    selinux_category_range = 1024
    stats_collect_period = 10
    stream_idle_timeout = "4h0m0s"
    stream_server_address = "127.0.0.1"
    stream_server_port = "0"
    systemd_cgroup = false
    tolerate_missing_hugetlb_controller = true
    unset_seccomp_profile = ""

    [plugins."io.containerd.grpc.v1.cri".cni]
      bin_dir = "/opt/cni/bin"
      conf_dir = "/etc/cni/net.d"
      conf_template = ""
      ip_pref = ""
      max_conf_num = 1

    [plugins."io.containerd.grpc.v1.cri".containerd]
      default_runtime_name = "runc"
      disable_snapshot_annotations = true
      discard_unpacked_layers = false
      ignore_rdt_not_enabled_errors = false
      no_pivot = false
      snapshotter = "overlayfs"

      [plugins."io.containerd.grpc.v1.cri".containerd.default_runtime]
        base_runtime_spec = ""
        cni_conf_dir = ""
        cni_max_conf_num = 0
        container_annotations = []
        pod_annotations = []
        privileged_without_host_devices = false
        runtime_engine = ""
        runtime_path = ""
        runtime_root = ""
        runtime_type = ""

        [plugins."io.containerd.grpc.v1.cri".containerd.default_runtime.options]

      [plugins."io.containerd.grpc.v1.cri".containerd.runtimes]

        [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc]
          base_runtime_spec = ""
          cni_conf_dir = ""
          cni_max_conf_num = 0
          container_annotations = []
          pod_annotations = []
          privileged_without_host_devices = false
          runtime_engine = ""
          runtime_path = ""
          runtime_root = ""
          runtime_type = "io.containerd.runc.v2"

          [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
            BinaryName = ""
            CriuImagePath = ""
            CriuPath = ""
            CriuWorkPath = ""
            IoGid = 0
            IoUid = 0
            NoNewKeyring = false
            NoPivotRoot = false
            Root = ""
            ShimCgroup = ""
            SystemdCgroup = true

      [plugins."io.containerd.grpc.v1.cri".containerd.untrusted_workload_runtime]
        base_runtime_spec = ""
        cni_conf_dir = ""
        cni_max_conf_num = 0
        container_annotations = []
        pod_annotations = []
        privileged_without_host_devices = false
        runtime_engine = ""
        runtime_path = ""
        runtime_root = ""
        runtime_type = ""

        [plugins."io.containerd.grpc.v1.cri".containerd.untrusted_workload_runtime.options]

    [plugins."io.containerd.grpc.v1.cri".image_decryption]
      key_model = "node"

    [plugins."io.containerd.grpc.v1.cri".registry]
      config_path = ""

      [plugins."io.containerd.grpc.v1.cri".registry.auths]

      [plugins."io.containerd.grpc.v1.cri".registry.configs]

      [plugins."io.containerd.grpc.v1.cri".registry.headers]

      [plugins."io.containerd.grpc.v1.cri".registry.mirrors]
        [plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"]
          endpoint = ["https://docker.mirrors.ustc.edu.cn","http://hub-mirror.c.163.com"]
        [plugins."io.containerd.grpc.v1.cri".registry.mirrors."gcr.io"]
          endpoint = ["https://gcr.mirrors.ustc.edu.cn"]
        [plugins."io.containerd.grpc.v1.cri".registry.mirrors."k8s.gcr.io"]
          endpoint = ["https://gcr.mirrors.ustc.edu.cn/google-containers/"]
        [plugins."io.containerd.grpc.v1.cri".registry.mirrors."quay.io"]
          endpoint = ["https://quay.mirrors.ustc.edu.cn"]
        [plugins."io.containerd.grpc.v1.cri".registry.mirrors."registry.k8s.io"]
          endpoint = ["https://registry.aliyuncs.com/google_containers/"]
        [plugins."io.containerd.grpc.v1.cri".registry.mirrors."172.21.16.213"]
          endpoint = ["http://172.21.16.213"]

    [plugins."io.containerd.grpc.v1.cri".x509_key_pair_streaming]
      tls_cert_file = ""
      tls_key_file = ""

  [plugins."io.containerd.internal.v1.opt"]
    path = "/opt/containerd"

  [plugins."io.containerd.internal.v1.restart"]
    interval = "10s"

  [plugins."io.containerd.internal.v1.tracing"]
    sampling_ratio = 1.0
    service_name = "containerd"

  [plugins."io.containerd.metadata.v1.bolt"]
    content_sharing_policy = "shared"

  [plugins."io.containerd.monitor.v1.cgroups"]
    no_prometheus = false

  [plugins."io.containerd.runtime.v1.linux"]
    no_shim = false
    runtime = "runc"
    runtime_root = ""
    shim = "containerd-shim"
    shim_debug = false

  [plugins."io.containerd.runtime.v2.task"]
    platforms = ["linux/amd64"]
    sched_core = false

  [plugins."io.containerd.service.v1.diff-service"]
    default = ["walking"]

  [plugins."io.containerd.service.v1.tasks-service"]
    rdt_config_file = ""

  [plugins."io.containerd.snapshotter.v1.aufs"]
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.btrfs"]
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.devmapper"]
    async_remove = false
    base_image_size = ""
    discard_blocks = false
    fs_options = ""
    fs_type = ""
    pool_name = ""
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.native"]
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.overlayfs"]
    root_path = ""
    upperdir_label = false

  [plugins."io.containerd.snapshotter.v1.zfs"]
    root_path = ""

  [plugins."io.containerd.tracing.processor.v1.otlp"]
    endpoint = ""
    insecure = false
    protocol = ""

[proxy_plugins]

[stream_processors]

  [stream_processors."io.containerd.ocicrypt.decoder.v1.tar"]
    accepts = ["application/vnd.oci.image.layer.v1.tar+encrypted"]
    args = ["--decryption-keys-path", "/etc/containerd/ocicrypt/keys"]
    env = ["OCICRYPT_KEYPROVIDER_CONFIG=/etc/containerd/ocicrypt/ocicrypt_keyprovider.conf"]
    path = "ctd-decoder"
    returns = "application/vnd.oci.image.layer.v1.tar"

  [stream_processors."io.containerd.ocicrypt.decoder.v1.tar.gzip"]
    accepts = ["application/vnd.oci.image.layer.v1.tar+gzip+encrypted"]
    args = ["--decryption-keys-path", "/etc/containerd/ocicrypt/keys"]
    env = ["OCICRYPT_KEYPROVIDER_CONFIG=/etc/containerd/ocicrypt/ocicrypt_keyprovider.conf"]
    path = "ctd-decoder"
    returns = "application/vnd.oci.image.layer.v1.tar+gzip"

[timeouts]
  "io.containerd.timeout.bolt.open" = "0s"
  "io.containerd.timeout.shim.cleanup" = "5s"
  "io.containerd.timeout.shim.load" = "5s"
  "io.containerd.timeout.shim.shutdown" = "3s"
  "io.containerd.timeout.task.state" = "2s"

[ttrpc]
  address = ""
  gid = 0
  uid = 0

EOF
systemctl enable containerd
crictl config runtime-endpoint unix:///run/containerd/containerd.sock
crictl config image-endpoint unix:///run/containerd/containerd.sock
systemctl restart containerd

rm -rf /home/containerd/run /home/containerd/lib /run/containerd /var/lib/containerd
systemctl restart containerd

mkdir -p /home/containerd/run /home/containerd/lib
systemctl stop containerd
mv /var/lib/containerd /home/containerd/lib
ln -s /home/containerd/lib/containerd /var/lib/containerd
mv /run/containerd /home/containerd/run
ln -s /home/containerd/run/containerd /run/containerd
systemctl start containerd

2顷牌、master節(jié)點初始化

# master初始化
kubeadm config images pull --kubernetes-version=v1.25.4 --image-repository=registry.aliyuncs.com/google_containers
crictl img
crictl pull registry.aliyuncs.com/google_containers/pause:3.8
ctr -n k8s.io i tag registry.aliyuncs.com/google_containers/pause:3.8 registry.k8s.io/pause:3.8

crictl pull registry.aliyuncs.com/google_containers/pause:3.6
ctr -n k8s.io i tag registry.aliyuncs.com/google_containers/pause:3.6 registry.k8s.io/pause:3.6

crictl pull registry.aliyuncs.com/google_containers/pause:3.2
ctr -n k8s.io i tag registry.aliyuncs.com/google_containers/pause:3.2 k8s.gcr.io/pause:3.2

kubeadm init \
    --kubernetes-version=1.25.4 \
    --image-repository registry.aliyuncs.com/google_containers \
    --apiserver-advertise-address=172.21.16.243 \
    --service-cidr=172.27.0.0/12 \
    --pod-network-cidr=172.28.0.0/16 \
    --control-plane-endpoint=172.21.16.243

export KUBECONFIG=/etc/kubernetes/admin.conf

cat <<EOF | tee -a ~/.bashrc
export KUBECONFIG=/etc/kubernetes/admin.conf
EOF

# 如果初始化失敗剪芍，可以需要重置master后，再次初始化
kubeadm reset
# 忘記token時重建token
kubeadm token create --print-join-command

# 安裝Calico
kubectl apply -f https://projectcalico.docs.tigera.io/manifests/calico.yaml

wget https://projectcalico.docs.tigera.io/manifests/calico.yaml
# 修改Calico配置后執(zhí)行
cd /home/kubelet/calico
kubectl apply -f calico.yaml

3窟蓝、從節(jié)點加入集群

# 從節(jié)點加入
kubeadm join 172.21.16.243:6443 --token nomrxo.w49tvouzjpsxxrjp --discovery-token-ca-cert-hash sha256:acfea59b8be01ca83a514a6656b05ff7aced13e9617ae12930746a618c3b93da

4罪裹、查看k8s集群運行情況

# 查看節(jié)點、pods
kubectl get nodes
kubectl get pods -A
kubectl get pods -n kube-system -o wide
kubectl -n kube-system describe pod calico-node-bjd74
kubectl -n kube-system logs calico-node-bjd74 --all-containers=true
kubectl describe nodes k8s-slave-01

# 查看啟動日志
journalctl -xeu kubelet --no-pager