Question

我具有以下配置，可以使用Rancher (RKE)设置集群。

rancher-config.yml

nodes:
  - address: 192.168.88.204
    internal_address: 172.16.22.12
    user: dockeruser
    role: [controlplane,worker,etcd]
  - address: 192.168.88.203
    internal_address: 172.16.32.37
    user: dockeruser
    role: [controlplane,worker,etcd]
  - address: 192.168.88.202
    internal_address: 172.16.42.73
    user: dockeruser
    role: [controlplane,worker,etcd]

services:
  etcd:
    snapshot: true
    creation: 6h
    retention: 24h

根据Rancher Networking，我已经为所有节点（192.168.88.204、192.168.88.203、192.168.88.202）打开了以下端口，作为防火墙服务。

node-firewall.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
    <port port="2376" protocol="tcp"/>
    <port port="2379" protocol="tcp"/>
    <port port="2380" protocol="tcp"/>
    <port port="8472" protocol="udp"/>
    <port port="9099" protocol="tcp"/>
    <port port="10250" protocol="tcp"/>
    <port port="443" protocol="tcp"/>
    <port port="6443" protocol="tcp"/>
    <port port="8472" protocol="udp"/>
    <port port="6443" protocol="tcp"/>
    <port port="10254" protocol="tcp"/>
    <port port="30000-32767" protocol="tcp"/>
</service>

-> commmend

firewall-offline-cmd --new-service-from-file=node-firewall.xml --name=node-firewall
firewall-cmd --reload
firewall-cmd --add-service node-firewall

我的RKE安装在192.168.88.151上。对于RKE->

rancher-firewall.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
    <port port="80" protocol="tcp"/>
    <port port="433" protocol="tcp"/>
    <port port="22" protocol="tcp"/>
    <port port="2376" protocol="tcp"/>
    <port port="6443" protocol="tcp"/>
</service>
firewall-offline-cmd --new-service-from-file=rancher-firewall.xml --name=rancher-firewall
firewall-cmd --reload
firewall-cmd --add-service rancher-firewall

因此，我运行以下命令来提高我的RKE

rke up --config ./rancher-config.yml

日志是

[root@localhost ~]# rke up --config ./rancher-config.yml
INFO[0000] Building Kubernetes cluster
INFO[0000] [dialer] Setup tunnel for host [192.168.88.204]
INFO[0000] [dialer] Setup tunnel for host [192.168.88.203]
INFO[0000] [dialer] Setup tunnel for host [192.168.88.202]
INFO[0001] [network] Deploying port listener containers
INFO[0001] [network] Port listener containers deployed successfully
INFO[0001] [network] Running etcd <-> etcd port checks
INFO[0001] [network] Successfully started [rke-port-checker] container on host [192.168.88.202]
INFO[0001] [network] Successfully started [rke-port-checker] container on host [192.168.88.204]
INFO[0001] [network] Successfully started [rke-port-checker] container on host [192.168.88.203]
FATA[0016] [network] Host [192.168.88.202] is not able to connect to the following ports: 
            [172.16.22.12:2379, 172.16.22.12:2380, 172.16.32.37:2379, 172.16.32.37:2380, 172.16.42.73:2380, 172.16.42.73:2379]. 
            Please check network policies and firewall rules

我的问题是如何为internal_address群集中的所有节点打开kubernates的端口？

Answer 1

可能是缺乏我的经验。我只是分享我发现的东西。 internal_address必须是docker的（网关）的IP地址。知道每个节点的docker的IP地址（192.168.88.204、192.168.88.203、192.168.88.202）。

运行推荐的docker network ls。您可能会得到以下网络信息。

NETWORK ID          NAME                DRIVER              SCOPE
aa13d08f2676        bridge              bridge              local
02eabe818790        host                host                local
1e5bb430d790        none                null                local

并运行命令docker network inspect bridge以获取bridge的ip地址。您将获得以下类似信息。

[
    {
        "Name": "bridge",
        "Id": "aa13d08f2676e40df5a82521fccc4e402ef6b04f82bcd414cd065a1859b3799d",
        "Created": "2019-01-31T21:32:02.381082005-05:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
                {
                    "Subnet": "172.17.0.0/16",
                    "Gateway": "172.17.0.1"
                }
            ]
        },
        ....
        ...
        ..
        .

]

并按如下所示配置rancher-config.yml并再次运行rke up --config ./rancher-config.yml

nodes:
  - address: 192.168.88.204
    internal_address: 172.17.0.1
    ...
...
..
..

Answer 2

那是不正确的。

internal_address提供了具有具有多个地址的节点设置特定的地址以用于专用网络上的主机间通信。如果内部地址未设置，该地址用于主机间通信。

每https://rancher.com/docs/rke/v0.1.x/en/config-options/nodes/#internal-address

您可能有防火墙问题。

检查您的活动区域以及这些区域中的接口。

firewall-cmd --get-active-zones

在Rancher / Kubernates（RKE）中为internal_address打开端口吗？

2 个答案: