一、卸载k8s
kubeadm reset -f
modprobe -r ipip
lsmod
rm -rf ~/.kube/
rm -rf /etc/kubernetes/
rm -rf /etc/systemd/system/kubelet.service.d
rm -rf /etc/systemd/system/kubelet.service
rm -rf /usr/bin/kube*
rm -rf /etc/cni
rm -rf /opt/cni
rm -rf /var/lib/etcd
rm -rf /var/etcd
apt clean all
apt remove kube*
二、安装K8S一主两从集群
k8s-master01 192.168.124.132 操作系统: Ubuntu20.04
k8s-node01 192.168.124.133 操作系统: Ubuntu20.04
k8s-node02 192.168.124.134 操作系统: Ubuntu20.04
最低配置:2核 2G内存 20G硬盘
1、环境准备:(所有服务器都需要操作)
1) 时间同步
timedatectl set-timezone Asia/Shanghai
sudo apt install ntpdate
sudo ntpdate ntp.ubuntu.com
2) 固定IP地址
Ubuntu固定虚拟机的ip地址-CSDN博客
3)修改主机名
[root@k8s-master1 ~]# hostnamectl set-hostname k8s-master
[root@k8s-node1 ~]# hostnamectl set-hostname k8s-node1
[root@k8s-node2 ~]# hostnamectl set-hostname k8s-node2
4)关闭交换分区
#临时关闭所有的交换分区
swapoff -a
#永久关闭所有的交换分区
sed -i '/swap/s/^\(.*\)$/#\1/g' /etc/fstab
5)所有节点都添加集群ip与主机名到hosts中:
cat >> /etc/hosts << EOF
172.16.11.221 k8s-master
172.16.11.222 k8s-node1
172.16.11.223 k8s-node2
EOF
配置内核转发及网桥过滤:
cat > /etc/modules-load.d/k8s.conf << EOF
overlay
br_netfilter
EOF
加载配置:
modprobe overlay
modprobe br_netfilter
查看是否加载:
lsmod |grep overlay
lsmod |grep br_netfilter
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF
让配置生效:
sysctl -p /etc/sysctl.d/k8s.conf
查看是否加载生效
lsmod |grep br_netfilter
6)关闭防火墙
sudo systemctl disable --now ufw
7)修改Ubuntu的sources.list
ubuntu | 镜像站使用帮助 | 清华大学开源软件镜像站 | Tsinghua Open Source Mirror
# 默认注释了源码镜像以提高 apt update 速度,如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
# 以下安全更新软件源包含了官方源与镜像站配置,如有需要可自行修改注释切换
deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
# deb-src http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
# 预发布软件源,不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
# # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
8)安装ipset和ipvsadm
apt install ipset ipvsadm
配置 ipvsadm 模块加载方式
cat > /etc/modules-load.d/ipvs.conf << EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack
EOF
写成一个脚本文件
cat << EOF | tee ipvs.sh
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack
EOF
授权运行检查:
授权运行检查:
chmod 755 /etc/modules-load.d/ipvs.conf && bash /etc/modules-load.d/ipvs.conf && lsmod | grep -e ip_vs -e nf_conntrack
9)容器运行时containetd
wget https://github.com/containerd/containerd/releases/download/v1.7.15/cri-containerd-1.7.15-linux-amd64.tar.gz
可能由于网络问题:链接: https://pan.baidu.com/s/1VoYMDB6ikOTSn4W-tziY9g 提取码: 3cvd
--来自百度网盘超级会员v2的分享
解压并查看
tar xf cri-containerd-1.7.15-linux-amd64.tar.gz -C /
which containerd
10)containerd配置文件生成并修改
创建文件:
mkdir /etc/containerd
生成配置文件:
containerd config default > /etc/containerd/config.toml
修改配置文件将3.8改为3.9
或者改为阿里云:registry.aliyuncs.com/google_containers/pause:3.9
vim /etc/containerd/config.toml
建议使用阿里云的镜像
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"]
cdi_spec_dirs = ["/etc/cdi", "/var/run/cdi"]
device_ownership_from_security_context = false
disable_apparmor = false
disable_cgroup = false
disable_hugetlb_controller = true
disable_proc_mount = false
disable_tcp_service = true
drain_exec_sync_io_timeout = "0s"
enable_cdi = false
enable_selinux = false
enable_tls_streaming = false
enable_unprivileged_icmp = false
enable_unprivileged_ports = false
ignore_deprecation_warnings = []
ignore_image_defined_volumes = false
image_pull_progress_timeout = "5m0s"
image_pull_with_sync_fs = 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:3.9"
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
setup_serially = false
[plugins."io.containerd.grpc.v1.cri".containerd]
default_runtime_name = "runc"
disable_snapshot_annotations = true
discard_unpacked_layers = false
ignore_blockio_not_enabled_errors = 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
privileged_without_host_devices_all_devices_allowed = false
runtime_engine = ""
runtime_path = ""
runtime_root = ""
runtime_type = ""
sandbox_mode = ""
snapshotter = ""
[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
privileged_without_host_devices_all_devices_allowed = false
runtime_engine = ""
runtime_path = ""
runtime_root = ""
runtime_type = "io.containerd.runc.v2"
sandbox_mode = "podsandbox"
snapshotter = ""
[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
privileged_without_host_devices_all_devices_allowed = false
runtime_engine = ""
runtime_path = ""
runtime_root = ""
runtime_type = ""
sandbox_mode = ""
snapshotter = ""
[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 = "/etc/containerd/certs.d"
[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".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"]
[plugins."io.containerd.metadata.v1.bolt"]
content_sharing_policy = "shared"
[plugins."io.containerd.monitor.v1.cgroups"]
no_prometheus = false
[plugins."io.containerd.nri.v1.nri"]
disable = true
disable_connections = false
plugin_config_path = "/etc/nri/conf.d"
plugin_path = "/opt/nri/plugins"
plugin_registration_timeout = "5s"
plugin_request_timeout = "2s"
socket_path = "/var/run/nri/nri.sock"
[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"]
blockio_config_file = ""
rdt_config_file = ""
[plugins."io.containerd.snapshotter.v1.aufs"]
root_path = ""
[plugins."io.containerd.snapshotter.v1.blockfile"]
fs_type = ""
mount_options = []
root_path = ""
scratch_file = ""
[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"]
mount_options = []
root_path = ""
sync_remove = false
upperdir_label = false
[plugins."io.containerd.snapshotter.v1.zfs"]
root_path = ""
[plugins."io.containerd.tracing.processor.v1.otlp"]
[plugins."io.containerd.transfer.v1.local"]
config_path = ""
max_concurrent_downloads = 3
max_concurrent_uploaded_layers = 3
[[plugins."io.containerd.transfer.v1.local".unpack_config]]
differ = ""
platform = "linux/amd64"
snapshotter = "overlayfs"
[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.metrics.shimstats" = "2s"
"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
创建上图相应的文件目录
mkdir -p /etc/containerd/certs.d/docker.io
配置加速
cat > /etc/containerd/certs.d/docker.io/hosts.toml << EOF
server = "https://docker.io"
[host."https://x46sxvnb.mirror.aliyuncs.com"]
capabilities = ["pull", "resolve"]
EOF
启动并设置开机自启
systemctl enable --now containerd
查看版本:
containerd --version
2、集群部署(所有服务器都需要操作)
1、下载用于kubernetes软件包仓库的公告签名密钥
k8s社区源(和下面的阿里云源二选一即可)网络问题选择阿里云
创建目录:
sudo mkdir -p /etc/apt/keyrings/
下载密钥
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
阿里云源
创建目录:
sudo mkdir -p /etc/apt/keyrings/
下载密钥
curl -fsSL https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.30/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
k8s社区(和下面的阿里云源二选一即可)
添加kubernetes apt仓库
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
阿里云
添加kubernetes apt仓库
echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.30/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
更新仓库
apt-get update
查看软件列表:
apt-cache policy kubeadm
安装指定版本:
sudo apt-get install -y kubelet=1.30.0-1.1 kubeadm=1.30.0-1.1 kubectl=1.30.0-1.1
修改kubelet配置
vim /etc/sysconfig/kubelet
KUBELET_EXTRA_ARGS="--cgroup-driver=systemd"
设置为开机自启
systemctl enable kubelet
锁定版本,防止后期自动更新。
sudo apt-mark hold kubelet kubeadm kubectl
解锁版本,可以执行更新
sudo apt-mark unhold kubelet kubeadm kubectl
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