openshift 4.3 calico + ipv4/v6 dual stack

Posted 2021-02-18 wandering-star

video

• https://youtu.be/ju4d7jWs7DQ
• https://www.bilibili.com/video/BV1va4y1e7c1/
• https://www.ixigua.com/i6827830624431112715/

# 在集群安装之前，配置文件写入ipv6地址信息
# install openshift with calico and ipv6 config
# networking:
#   clusterNetworks:
#   - cidr: 10.254.0.0/16
#     hostPrefix: 24
#   - cidr: fd00:192:168:7::/64
#     hostPrefix: 80

# 在安装集群的过程中，给主机添加ipv6地址，安装就可以顺利继续了
## add ipv6 address to hosts
# helper
nmcli con modify eth0 ipv6.address "fd00:192:168:7::11/64" ipv6.gateway fd00:192:168:7::1
nmcli con modify eth0 ipv6.method manual
nmcli con reload
nmcli con up eth0

# master0
nmcli con modify ens3 ipv6.address fd00:192:168:7::13/64 ipv6.gateway fd00:192:168:7::1 ipv6.method manual
nmcli con reload
nmcli con up ens3

# master1
nmcli con modify ens3 ipv6.address fd00:192:168:7::14/64 ipv6.gateway fd00:192:168:7::1 ipv6.method manual
nmcli con reload
nmcli con up ens3

# master2
nmcli con modify ens3 ipv6.address fd00:192:168:7::15/64 ipv6.gateway fd00:192:168:7::1 ipv6.method manual
nmcli con reload
nmcli con up ens3

# worker0
nmcli con modify ens3 ipv6.address fd00:192:168:7::16/64 ipv6.gateway fd00:192:168:7::1 ipv6.method manual
nmcli con reload
nmcli con up ens3

# worker1
nmcli con modify ens3 ipv6.address fd00:192:168:7::17/64 ipv6.gateway fd00:192:168:7::1 ipv6.method manual
nmcli con reload
nmcli con up ens3

oc apply -f calicoctl.yaml

oc exec calicoctl -n calico-system -it -- /calicoctl get node -o wide

oc exec calicoctl -n calico-system -it -- /calicoctl ipam show --show-blocks

oc exec calicoctl -n calico-system -it -- /calicoctl get ipPool -o wide

# 在openshift的开发者视图上部署一个tomcat

# 从浏览器上，直接访问route入口，测试ipv4的效果。

# 在master0上直接访问worker1上的pod ipv6地址
curl -g -6 ‘http://[fd00:192:168:7:697b:8c59:3298:b950]:8080/‘

# 在集群外，直接访问worker0上的pod ipv6地址
ip -6 route add fd00:192:168:7:697b:8c59:3298::/112 via fd00:192:168:7::17 dev eth0
curl -g -6 ‘http://[fd00:192:168:7:697b:8c59:3298:b950]:8080/‘