标签：适合 ubuntu str mes table 安装文档 cto select pre
在Calico Overlay网络中有两种模式可选（仅支持IPV4地址）
两种模式均支持如下参数
在默认情况下，默认的 ipPool 启用了 IPIP 封装(至少通过官方安装文档安装的 Calico 是这样)，并且封装模式为 Always；这也就意味着任何时候都会在原报文上封装新 IP 地址，在这种情况下将外部流量路由到 RR 节点，RR 节点再转发进行 IPIP 封装时，可能出现网络无法联通的情况(没仔细追查，网络渣，猜测是 Pod 那边得到的源 IP 不对导致的)；此时我们应当调整 IPIP 封装策略为 CrossSubnet
导出 ipPool 配置
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calicoctl get ippool default-ipv4-ippool -o yaml > ippool.yaml
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修改 ipipMode 值为 CrossSubnet
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apiVersion: projectcalico.org/v3
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重新使用 calicoctl apply -f ippool.yaml 应用既可
- name: CALICO_IPV4POOL_IPIP value: "Always"
root@ubuntu:~# ./calicoctl node status Calico process is running. IPv4 BGP status +--------------+-------------------+-------+----------+-------------+ | PEER ADDRESS | PEER TYPE | STATE | SINCE | INFO | +--------------+-------------------+-------+----------+-------------+ | 10.10.16.47 | node-to-node mesh | up | 08:24:07 | Established | | 10.10.16.81 | node-to-node mesh | up | 10:59:49 | Established | +--------------+-------------------+-------+----------+-------------+ IPv6 BGP status No IPv6 peers found. root@ubuntu:~# ./calicoctl get node NAME bogon cloud ubuntu root@ubuntu:~#
改为
- name: CALICO_IPV4POOL_IPIP value: "Never"
root@ubuntu:~# ./calicoctl get node NAME bogon cloud ubuntu root@ubuntu:~# ./calicoctl node status Calico process is running. None of the BGP backend processes (BIRD or GoBGP) are running. root@ubuntu:~# ./calicoctl node status Calico process is running. IPv4 BGP status +--------------+-------------------+-------+----------+--------------------------------+ | PEER ADDRESS | PEER TYPE | STATE | SINCE | INFO | +--------------+-------------------+-------+----------+--------------------------------+ | 10.10.16.81 | node-to-node mesh | up | 02:14:59 | Established | | 10.10.16.47 | node-to-node mesh | start | 02:15:02 | Active Socket: Connection | | | | | | closed | +--------------+-------------------+-------+----------+--------------------------------+ IPv6 BGP status No IPv6 peers found. root@ubuntu:~#
root@ubuntu:~# ./calicoctl node status Calico process is running. IPv4 BGP status +--------------+-------------------+-------+----------+-------------+ | PEER ADDRESS | PEER TYPE | STATE | SINCE | INFO | +--------------+-------------------+-------+----------+-------------+ | 10.10.16.81 | node-to-node mesh | up | 02:15:22 | Established | | 10.10.16.47 | node-to-node mesh | up | 02:15:10 | Established | +--------------+-------------------+-------+----------+-------------+ IPv6 BGP status No IPv6 peers found. root@ubuntu:~#
全互联模式(node-to-node mesh)
??全互联模式，每一个BGP Speaker都需要和其他BGP Speaker建立BGP连接，这样BGP连接总数就是N^2，如果数量过大会消耗大量连接。如果集群数量超过100台官方不建议使用此种模式。
路由反射模式Router Reflection（RR）
??RR模式中会指定一个或多个BGP Speaker为RouterReflection，它与网络中其他Speaker建立连接，每个Speaker只要与Router Reflection建立BGP就可以获得全网的路由信息。在calico中可以通过Global Peer实现RR模式。
标签：适合 ubuntu str mes table 安装文档 cto select pre
原文地址：https://www.cnblogs.com/dream397/p/14917354.html
