新聞中心
Kubernetes(簡稱K8s)是一個開源的容器編排平臺,用于自動化部署、擴展和管理容器化應用程序,它允許開發(fā)者在集群中輕松地部署、擴展和管理容器化應用程序,從而實現高可用性、負載均衡和自動擴縮容等功能,本文將介紹如何使用kubeadm安裝Kubernetes實踐過程。

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準備工作
1、系統環(huán)境要求
Kubernetes支持多種操作系統,包括Linux、Windows和macOS,本文將以Linux為例進行介紹,在安裝Kubernetes之前,請確保您的系統滿足以下要求:
硬件要求:至少2個CPU核心,4GB內存(建議8GB或更多),足夠的磁盤空間(建議20GB或更多)。
軟件要求:已安裝Docker或rkt等容器運行時。
網絡要求:具有IPv4地址的主機。
2、添加Kubernetes官方倉庫
在安裝Kubernetes之前,需要先添加官方倉庫,以便下載所需的軟件包,在終端中執(zhí)行以下命令:
sudo apt-get update && sudo apt-get install -y apt-transport-https curl curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list sudo apt-get update
安裝kubeadm和kubelet
1、安裝kubeadm
kubeadm是Kubernetes的控制平面組件,用于初始化主節(jié)點,執(zhí)行以下命令安裝kubeadm:
sudo apt-get install -y kubelet kubeadm kubectl
2、初始化主節(jié)點
在安裝完成后,需要初始化主節(jié)點,配置kubelet參數文件:
sudo mkdir -p /etc/systemd/system/kubelet.service.d sudo nano /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
在打開的文件中,添加以下內容:
[Service] Environment="KUBELET_EXTRA_ARGS=--pod-network-cidr=192.168.0.0/16" EnvironmentFile=-/etc/default/kubelet Restart=always ExecStart=/usr/bin/kubelet --config=/etc/kubernetes/kubelet.conf --fail-swap-on=false --cgroup-driver=cgroupfs --cluster-dns=--cluster-domain=cluster.local --kubeconfig=/var/lib/kubelet/kubeconfig.yaml --pod-infra-container-image=k8s.gcr.io/pause:3.1 --eviction-hard nodefs,nodefs,swap fs.inotifyfs==1 && exec kubelet --config=/etc/kubernetes/kubelet.conf --fail-swap-on=false --cgroup-driver=cgroupfs --cluster-dns= --cluster-domain=cluster.local --kubeconfig=/var/lib/kubelet/kubeconfig.yaml --pod-infra-container-image=k8s.gcr.io/pause:3.1 --eviction-hard nodefs,nodefs,swap fs.inotifyfs==1"
注意替換為您的DNS服務器地址,保存并退出文件,然后重新加載systemd配置:
sudo systemctl daemon-reload
啟動并設置開機自啟動kubelet服務:
sudo systemctl enable kubelet && sudo systemctl start kubelet
安裝網絡插件
Kubernetes支持多種網絡插件,如Flannel、Calico等,本文以Flannel為例進行介紹,安裝Flannel相關依賴:
sudo apt-get install -y bridge-utils conntrackd docker.io flannel git make netfilter-persistent python3-pip zip unzip jq socat sysstat iptables iptutils wget curl bzip2 tar gzip zlib1g-dev libssl-dev libffi-dev vim git python3 python3-setuptools python3-wheel python3-pip python3-yaml rsync sed findutils iproute2 traceroute time man curl ca-certificates certbot python3 python3-cryptography python3-jinja2 python3-click python3-click_exceptions python3-click_decorators python3-pyparsing python3-requests python3-httplib2 python3-urllib3 python3-numpy python3-scipy python3-pandas python3-matplotlib python3-seaborn python3-scikit-learn python3-scipy scikitplot pyOpenSSL cffi lxml psutil pycryptodome cryptography boto3 requests botocore urllib3 chardet idna six virtualenv ansible docker dockercompose pipenv virtualenvwrapper virtualenv awscli jq conan cmake build-essential libtool automake libtool autoconf libtool bison flex libtoolize m4 patch texinfo gawk grep sed seddoc coreutils findutils procps hostid nproc locale localedef gettext intltoolize xz bzip2 tar gzip zlib1g zlib1g-devel libjpeg libpng libtiff libavcodec libavformat libavutil libswscale libswresample libvpx libvorbis libopus libtheora libx264 libx265 libnuma numactl libatlasclient atlasclient atlasmpi atlasdevtools atlasbase atlaspython atlaspackaging atlasrepo atlasdata atlasuserguide atlascontributors atlaslicense atlasreleasenotes atlaschangelog atlasversionhistory atlasprojectinfo atlasprojectteam atlasprojectsupport atlasprojectstatus atlasprojectdocumentation atlasprojectissuetracker atlasprojectwiki atlasprojectblog atlasprojectcommunity atlasprojectdownloads atlasprojectresources atlasprojectsupportforums atlasprojectissuetrackers atlasprojectbugtrackingsystems atlasprojectsecurityadvisories atlasprojectdisclaimer atlasprojectprivacystatement atlasprojectthirdpartysoftwareatlasprojectthirdpartysoftwarelicenseatlasprojectthirdpartysoftwaretermsofuseatlasprojectthirdpartysoftwaresourcecodeatlasprojectthirdpartysoftwarechangelogatlasprojectthirdpartysoftwareversionhistoryatlasprojectthirdpartysoftwaredocumentationatlasprojectthirdpartysoftwareissuetrackeratlasprojectthirdpartysoftwarecommunityatlasprojectthirdpartysoftwaredownloadsatlasprojectthirdpartysoftwareresourcesatlasprojectthirdpartysoftwaresupportforumsatlasprojectthirdpartysoftwareissuetrackersatlasprojectthirdpartysoftwarebugtrackingsystemsatlasprojectthirdpartysoftwaresecurityadvisoriesatlasprojectthirdpartysoftwaredisclaimeratlasprojectthirdpartysoftwareprivacystatement atlasprojectcontributetoatlsproje
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