run/flannel/docker Restart=on-failure [Install] WantedBy=multi-user.target RequiredBy=docker.service.../flannel目录下生成subnet.env和docker文件 # ls /run/flannel/ docker subnet.env Flannel的文档中有写Docker Integration...source in the values and pass them to Docker daemon: 执行如下命令： # source /run/flannel/subnet.env Systemd...users can use EnvironmentFile directive in the .service file to pull in /run/flannel/subnet.env 如果你不是使用.../run/flannel/subnet.env FLANNEL_NETWORK=172.30.0.0/16 FLANNEL_SUBNET=172.30.46.1/24 FLANNEL_MTU=1450
# etcdctl -o extended get /k8s/network/subnets/172.30.103.0-24 Key: /k8s/network/subnets/172.30.103.0...set /coreos.com/network/config '{"Network":"11.0.0.0/8"}' // 扩容之后，新增node的网段情况如下： $ cat /run/flannel.../subnet.env FLANNEL_NETWORK=11.0.0.0/8 // 网段前缀是/8 FLANNEL_SUBNET=11.0.47.1/24 FLANNEL_MTU=1426...FLANNEL_IPMASQ=false // 已有node的上的网段还是以前的配置： $ cat /run/flannel/subnet.env FLANNEL_NETWORK=11.0.0.0/16...node上的flannel重启后，子网配置会自动刷新： $ cat /run/flannel/subnet.env FLANNEL_NETWORK=11.0.0.0/8 // 前缀刷新 FLANNEL_SUBNET
/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env Restart=on-failure [Install]...文件 cd /run/flannel/ # cat subnet.env DOCKER_OPT_BIP="--bip=172.17.27.1/24" DOCKER_OPT_IPMASQ="--ip-masq...docker.service cd /usr/lib/systemd/system vim docker.service 修改内容 [Service] Type=notify EnvironmentFile=/run.../flannel/subnet.env # the default is not to use systemd for cgroups because the delegate issues still...# exists and systemd currently does not support the cgroup feature set required # for containers run
k8s 集群部署 flannel 报错 查看 flannel 日志报错如下： Couldn't fetch network config: client: response is invalid json...The endpoint is probably not valid etcd cluster endpoint. timed out 无法获取网络配置：客户端：响应无效json。.../network 3, 开启 etcd v2 API 接口 在 etcd 启动命令里面添加上如下内容,然后重启 etcd 集群 --enable-v2 4, 使用 etcd v2 去创建 flannel.../etcdctl ls /coreos.com/network/subnets 检查得到的结果是不是给你的 subnet.env 里面配置的网络在同一网段，如果是检查路由表，查看是否自动添加路由 route...flannel 程序包
/net-conf.json /run/flannel/subnet.env /opt/bin/flanneld 下面是我的环境对应的内容： /run/flannel # ls /etc/kube-flannel...Network": "10.244.0.0/16", "Backend": { "Type": "host-gw" } } /run/flannel # cat /run/flannel.../subnet.env FLANNEL_NETWORK=10.244.0.0/16 FLANNEL_SUBNET=10.244.26.1/24 FLANNEL_MTU=1500 FLANNEL_IPMASQ...Defaults to /run/flannel/subnet.env -d Path to Docker env file to write to....="/run/flannel/subnet.env" docker_env="/run/docker_opts.env" combined_opts_key="DOCKER_OPTS" indiv_opts
ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/docker...=true --mtu=1450" [root@k8s-master1 ~]# cat /run/flannel/subnet.env FLANNEL_NETWORK=172.30.0.0/16 FLANNEL_SUBNET...=172.30.94.1/24 FLANNEL_MTU=1450 FLANNEL_IPMASQ=false /run/flannel/docker是flannel分配给docker的子网信息，/run.../flannel/subnet.env包含了flannel整个大网段以及在此节点上的子网段。...by docker EnvironmentFile=/run/flannel/docker ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS ExecReload
192.168.118.77:2379,http://192.168.118.77:4001" systemctl start etcd 设置etcd的网络 etcdctl mk /atomic.io/network.../config '{"Network":"172.17.0.0/16", "SubnetMin": "172.17.1.0", "SubnetMax": "172.17.254.0"}' etcdctl...systemctl start flanneld.service systemctl restart docker 5、设置DOCKER默认网络，（所有主机，每台的子网不一样，分别设置） cat /run.../flannel/subnet.env FLANNEL_NETWORK=172.17.0.0/16 FLANNEL_SUBNET=172.17.82.1/24 FLANNEL_MTU=1472...-containerd=/run/containerd/containerd.sock --bip=172.17.50.1/24 --mtu=1472 systemctl daemon-reload
将子网信息记录到/run/flannel/subnet.env中。.../network/subnets /coreos.com/network/subnets/10.0.2.0-24 查看flannel0的网络情况： $ ifconfig flannel0 flannel0...查看flannel分配的网络参数 $ cat /run/flannel/subnet.env FLANNEL_NETWORK=10.0.0.0/16 FLANNEL_SUBNET=10.0.2.1/24...FLANNEL_MTU=1472 FLANNEL_IPMASQ=true 创建Docker运行参数 使用flannel提供的脚本将subnet.env转写成Docker启动参数，创建好的启动参数位于...$ /opt/flannel/mk-docker-opts.sh -d /run/docker_opts.env -c $ cat /run/docker_opts.env DOCKER_OPTS="
Flannel容器集群网络部署 Overlay Network：覆盖网络，在基础网络上叠加的一种虚拟网络技术模式，该网络中的主机通过虚拟链路连接起来。...flannel工作原理： ?...https://github.com/coreos/flannel/releases/download/v0.10.0/flannel-v0.10.0-linux-amd64.tar.gz tar xf...mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env Restart=on-failure [Install]...firewalld.service Wants=network-online.target [Service] Type=notify EnvironmentFile=/run/flannel/subnet.env
/16", "Backend": {"Type": "host-gw"}}' mkdir /run/flannel cat > /run/flannel/subnet.env << EOF FLANNEL_NETWORK...cat > /run/flannel/subnet.env << EOF FLANNEL_NETWORK=172.7.0.0/16 FLANNEL_SUBNET=172.7.120.1/24 FLANNEL_MTU...=1500 FLANNEL_IPMASQ=false EOF mkdir /run/flannel cat > /run/flannel/subnet.env << EOF FLANNEL_NETWORK...\\ -subnet-file=/run/flannel/subnet.env \\ -iface=eth0 \\ -healthz-port=2401 Restart=always RestartSec...delete cni0 && rm -rf /var/lib/cni/network/cni0/* # 修改flannel 网段文件 cat /run/flannel/subnet.env FLANNEL_NETWORK
4）将子网信息记录到/run/flannel/subnet.env中。 5）在Node节点上，会创建一个名为flannel.1的虚拟网卡。...可以看到每个node上/run/flannel/subnet.env 子网掩码不一样。...]# cat /run/flannel/subnet.env FLANNEL_NETWORK=10.0.0.0/16 FLANNEL_SUBNET=10.0.24.1/24 FLANNEL_MTU...=1450 FLANNEL_IPMASQ=true 通过文件/run/flannel/subnet.env设定docker的网络。...1）查看flannel分配的网络参数： cat /run/flannel/subnet.env FLANNEL_NETWORK=10.0.0.0/16 FLANNEL_SUBNET=10.0.24.1
1 root@etcd1:~# etcdctl --endpoints http://172.24.8.113:2379 set /flannel/network/config '{"Network":...=/usr/local/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/docker...运行后会讲flannel获取的网络参数写入/run/flannel/subnet.env文件； -k DOCKER_NETWORK_OPTIONS：-k会将默认组合键，即DOCKER_OPTS=转换为DOCKER_NETWORK_OPTIONS...）； -d /run/flannel/docker：将/run/flannel/subnet.env文件转换为docker能识别的格式后保存为/run/flannel/docker。...六 验证确认 6.1 验证flannel获取网络参数 1 root@docker01:~# cat /run/flannel/docker #检查flannel获取网络参数情况 2 DOCKER_OPT_BIP
本文中我们将 Flannel 作为 network provider，这里简单介绍一下 Flannel 的设置。...Flannel CNI 插件 当使用 Flannel 作为 network provider 时，Containered CRI 插件使用 CNI 配置文件，调用 Flannel CNI 插件：/etc...Fannel CNI 插件与 Flanneld 结合使用，当 Flanneld 启动时，它将从 apiserver 中获取 podCIDR 和其他与网络相关的详细信息，并将它们存储在文件中/run/flannel.../subnet.env。...Flannel CNI 插件使用 /run/flannel/subnet.env 的信息来配置和调用 Bridge CNI 插件。
--endpoint http://172.31.0.5:4001 set /flannel/net/config '{"NetWork":"192.168.0.0/16","SubnetLen":.../flannel/subnet.env。...例如在节点172.31.0.5上： # cat /run/flannel/subnet.env FLANNEL_NETWORK=192.168.0.0/16 FLANNEL_SUBNET=192.168.24.1.../system/dockerd.service， 如下所示，增加"EnvironmentFile=-/run/flannel/subnet.env", 并修改ExecStart定义 EnvironmentFile...=-/run/flannel/subnet.env ExecStart=/usr/bin/dockerd ${LOG_LEVEL} --bip=${FLANNEL_SUBNET} --mtu=${FLANNEL_MTU
Pod: ✔ kube-flannel-ds-82mww / # ls /etc/kube-flannel/ cni-conf.json net-conf.json 默认配置 vxlan 是 Flannel...default FORWARD chain policy to ACCEPT I0826 03:22:37.758315 1 main.go:375] Wrote subnet file to /run.../flannel/subnet.env I0826 03:22:37.758326 1 main.go:379] Running backend....自动改为1500 # cat /run/flannel/subnet.env FLANNEL_NETWORK=10.244.0.0/16 FLANNEL_SUBNET=10.244.0.1/24 FLANNEL_MTU...的两种模式解析（VXLAN、host-gw) Benchmark results of Kubernetes network plugins (CNI) over 10Gbit/s network (Updated
目录，默认为/usr/libexec/cni;并将cni配置放到crio.network.network_dir目录 启动CRI-O 在cri-o的源码目录下执行如下步骤，启动CRI-O sudo make...cri-tools/cmd/crictl # cp /root/go/bin/crictl /usr/local/bin # crictl --runtime-endpoint unix:///var/run.../crio/crio.sock image-endpoint: unix:///var/run/crio/crio.sock 启动minikube并配置使用CRI-O minikube start --...version ["" "0.1.0" "0.2.0"] to 0.4.0 正常启动后可以在/run/flannel/subnet.env中看到配置的flannel信息， # cat /run/flannel.../subnet.env FLANNEL_NETWORK=10.244.0.0/16 FLANNEL_SUBNET=10.233.64.1/24 FLANNEL_MTU=1450 FLANNEL_IPMASQ
and stores them in a file - /run/flannel/subnet.env....当Flanneld启动时，它会从apiserver获取podCIDR和其他与网络相关的详细信息，并将它们存储在一个文件中 - /run/flannel/subnet.env。...FLANNEL_NETWORK=10.244.0.0/16 FLANNEL_SUBNET=10.244.0.1/24 FLANNEL_MTU=1450 FLANNEL_IPMASQ=false The...Flannel CNI plugin uses the information in /run/flannel/subnet.env to configure and invoke the bridge...Flannel CNI 插件使用 /run/flannel/subnet.env 中的信息来配置和调用网桥 CNI 插件。
本文中我们将 Flannel 作为 network provider，这里简单介绍一下 Flannel 的设置。...Flannel CNI 插件 当使用 Flannel 作为 network provider 时，Containered CRI 插件使用 CNI 配置文件，调用 Flannel CNI 插件/etc/...Fannel CNI 插件与 Flanneld 结合使用，当 Flanneld 启动时，它将从 apiserver 中获取 podCIDR 和其他与网络相关的详细信息，并将它们存储在文件中/run/flannel.../subnet.env。...Flannel CNI 插件使用 /run/flannel/subnet.env 的信息来配置和调用 Bridge CNI 插件。
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