这篇文章给大家分享的是有关Kubernetes 1.8.4如何安装Calico的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。
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Calico
Calico 是一款纯 Layer 3 的数据中心网络方案(不需要 Overlay 网络)，Calico 好处是他已与各种云原生平台有良好的整合，而 Calico 在每一个节点利用 Linux Kernel 实现高效的 vRouter 来负责数据的转发，而当数据中心复杂度增加时，可以用 BGP route reflector 来达成。
在master通过 kubectl 建立 Calico policy controller
生成calico-controller.yml
cat < calico-controller.yml
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: calico-kube-controllers
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-kube-controllers
subjects:
- kind: ServiceAccount
name: calico-kube-controllers
namespace: kube-system
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-kube-controllers
namespace: kube-system
rules:
- apiGroups:
- ""
- extensions
resources:
- pods
- namespaces
- networkpolicies
verbs:
- watch
- list
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-kube-controllers
namespace: kube-system
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: calico-policy-controller
namespace: kube-system
labels:
k8s-app: calico-policy
spec:
strategy:
type: Recreate
template:
metadata:
name: calico-policy-controller
namespace: kube-system
labels:
k8s-app: calico-policy
spec:
hostNetwork: true
serviceAccountName: calico-kube-controllers
containers:
- name: calico-policy-controller
image: quay.io/calico/kube-controllers:v1.0.0
env:
- name: ETCD_ENDPOINTS
value: "https://10.0.0.162:2379"
- name: ETCD_CA_CERT_FILE
value: "/etc/etcd/ssl/etcd-ca.pem"
- name: ETCD_CERT_FILE
value: "/etc/etcd/ssl/etcd.pem"
- name: ETCD_KEY_FILE
value: "/etc/etcd/ssl/etcd-key.pem"
volumeMounts:
- mountPath: /etc/etcd/ssl
name: etcd-ca-certs
readOnly: true
volumes:
- hostPath:
path: /etc/etcd/ssl
type: DirectoryOrCreate
name: etcd-ca-certs
EOF
kubectl apply -f calico-controller.yml
查看状态
kubectl -n kube-system get po -l k8s-app=calico-policy
在master下载 Calico CLI 工具
wget https://github.com/projectcalico/calicoctl/releases/download/v1.6.1/calicoctl
chmod +x calicoctl && mv calicoctl /usr/local/bin/
在所有节点下载 Calico，并执行以下步骤
export CALICO_URL="https://github.com/projectcalico/cni-plugin/releases/download/v1.11.0"
wget -N -P /opt/cni/bin ${CALICO_URL}/calico
wget -N -P /opt/cni/bin ${CALICO_URL}/calico-ipam
chmod +x /opt/cni/bin/calico /opt/cni/bin/calico-ipam在所有节点下载 CNI plugins配置文件，以及 calico-node.service
创建文件夹
mkdir -p /etc/cni/net.d
cat < /etc/cni/net.d/10-calico.conf
{
"name": "calico-k8s-network",
"cniVersion": "0.1.0",
"type": "calico",
"etcd_endpoints": "https://10.0.0.162:2379",
"etcd_ca_cert_file": "/etc/etcd/ssl/etcd-ca.pem",
"etcd_cert_file": "/etc/etcd/ssl/etcd.pem",
"etcd_key_file": "/etc/etcd/ssl/etcd-key.pem",
"log_level": "info",
"ipam": {
"type": "calico-ipam"
},
"policy": {
"type": "k8s"
},
"kubernetes": {
"kubeconfig": "/etc/kubernetes/kubelet.conf"
}
}
EOF
cat < /lib/systemd/system/calico-node.service
[Unit]
Description=calico node
After=docker.service
Requires=docker.service
[Service]
User=root
PermissionsStartOnly=true
ExecStart=/usr/bin/docker run --net=host --privileged --name=calico-node \
-e ETCD_ENDPOINTS=https://10.0.0.162:2379 \
-e ETCD_CA_CERT_FILE=/etc/etcd/ssl/etcd-ca.pem \
-e ETCD_CERT_FILE=/etc/etcd/ssl/etcd.pem \
-e ETCD_KEY_FILE=/etc/etcd/ssl/etcd-key.pem \
-e NODENAME=${HOSTNAME} \
-e IP= \
-e NO_DEFAULT_POOLS= \
-e AS= \
-e CALICO_LIBNETWORK_ENABLED=true \
-e IP6= \
-e CALICO_NETWORKING_BACKEND=bird \
-e FELIX_DEFAULTENDPOINTTOHOSTACTION=ACCEPT \
-e FELIX_HEALTHENABLED=true \
-e CALICO_IPV4POOL_CIDR=10.244.0.0/16 \
-e CALICO_IPV4POOL_IPIP=always \
-e IP_AUTODETECTION_METHOD=interface=ens33 \
-e IP6_AUTODETECTION_METHOD=interface=ens33 \
-v /etc/etcd/ssl:/etc/etcd/ssl \
-v /var/run/calico:/var/run/calico \
-v /lib/modules:/lib/modules \
-v /run/docker/plugins:/run/docker/plugins \
-v /var/run/docker.sock:/var/run/docker.sock \
-v /var/log/calico:/var/log/calico \
quay.io/calico/node:v2.6.2
ExecStop=/usr/bin/docker rm -f calico-node
Restart=on-failure
RestartSec=10
[Install]
WantedBy=multi-user.target
EOF
在所有节点启动 Calico-node
systemctl enable calico-node.service && systemctl start calico-node.service
在master查看 Calico nodes
cat < ~/calico-rc
export ETCD_ENDPOINTS="https://10.0.0.162:2379"
export ETCD_CA_CERT_FILE="/etc/etcd/ssl/etcd-ca.pem"
export ETCD_CERT_FILE="/etc/etcd/ssl/etcd.pem"
export ETCD_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
EOF
. ~/calico-rc
calicoctl get node -o wide
查看 pending 的 pod 是否已执行
kubectl -n kube-system get po
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分享文章：Kubernetes1.8.4如何安装Calico
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