指定 --kubeadm-config string 配置文件初始化集群问题

[sunkerz]

因为集群需要通过外网访问APIserver，当执行初始化集群的时候指定 --kubeadm-config config.yaml 配置，sealos还是使用默认参数重新渲染了一次kubeadm的配置，导致自定义的floatingip参数被覆盖掉。

初始化命令

sealos init --kubeadm-config kubeadm-config.yaml --master 172.16.10.31 --master 172.16.10.32 --master 172.16.10.33 --node 172.16.10.34 --user root --passwd redhat --pkg-url kube1.14.4.tar.gz --version v1.14.4

相关日志
2019-07-28 03:58:30 [DEBG] [github.com/fanux/sealos/install/send_package.go:36] please wait for tar zxvf exec
2019-07-28 03:58:30 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.32 ls -l /root | grep kube1.14.4.tar.gz | wc -l
2019-07-28 03:58:30 [DEBG] [github.com/fanux/sealos/install/send_package.go:56] please wait for tar zxvf exec
2019-07-28 03:58:30 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.34 ls -l /root | grep kube1.14.4.tar.gz | wc -l
2019-07-28 03:58:30 [DEBG] [github.com/fanux/sealos/install/send_package.go:36] please wait for tar zxvf exec
2019-07-28 03:58:30 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.33 ls -l /root | grep kube1.14.4.tar.gz | wc -l
2019-07-28 03:58:30 [DEBG] [github.com/fanux/sealos/install/send_package.go:36] please wait for tar zxvf exec
2019-07-28 03:58:30 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.31 ls -l /root | grep kube1.14.4.tar.gz | wc -l
2019-07-28 03:58:30 [DEBG] [github.com/fanux/sealos/install/utils.go:90] command result is: 1
...
...
2019-07-28 03:59:48 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.31 echo "apiVersion: kubeadm.k8s.io/v1beta1
kind: ClusterConfiguration
kubernetesVersion: v1.14.4
controlPlaneEndpoint: apiserver.cluster.local:6443
networking:
podSubnet: 100.64.0.0/10
apiServer:
certSANs:
- 127.0.0.1
- apiserver.cluster.local
- 172.16.10.31
- 172.16.10.32
- 172.16.10.33
- 10.103.97.2
- 172.16.10.100
- k8s-cluster.viken.local

apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
mode: ipvs
ipvs:
excludeCIDRs:
- 10.103.97.2/32
" > /root/kubeadm-config.yaml
2019-07-28 03:59:48 [DEBG] [github.com/fanux/sealos/install/utils.go:90] command result is:
2019-07-28 03:59:48 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.31 echo 172.16.10.31 apiserver.cluster.local >> /etc/hosts
2019-07-28 03:59:48 [DEBG] [github.com/fanux/sealos/install/utils.go:90] command result is:
2019-07-28 03:59:48 [INFO] [github.com/fanux/sealos/install/utils.go:81] 172.16.10.31 echo "apiVersion: kubeadm.k8s.io/v1beta1
kind: ClusterConfiguration
kubernetesVersion: v1.14.4
controlPlaneEndpoint: "apiserver.cluster.local:6443"
networking:
podSubnet: 100.64.0.0/10
apiServer:
certSANs:
- 127.0.0.1
- apiserver.cluster.local
- 172.16.10.31
- 172.16.10.32
- 172.16.10.33
- 10.103.97.2

apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
mode: "ipvs"
ipvs:
excludeCIDRs:
- "10.103.97.2/32"" > /root/kubeadm-config.yaml
2019-07-28 03:59:48 [DEBG] [github.com/fanux/sealos/install/utils.go:90] command result is:

这里sealos第两次渲染把 kubeadm-config.yaml 自定义参数给覆盖掉了。

[fanux]

https://github.com/fanux/sealos/blob/master/install/sealos.go#L63 这里有bug

[cuisongliu]

@fanux
--kubeadm-config kubeadm-config.yaml

apiVersion: kubeadm.k8s.io/v1beta1
kind: ClusterConfiguration
kubernetesVersion: {{.Version}}
controlPlaneEndpoint: "apiserver.cluster.local:6443"
networking:
  podSubnet: 100.64.0.0/10
apiServer:
        certSANs:
        - 127.0.0.1
        - apiserver.cluster.local
        {{range .Masters -}}
        - {{.}}
        {{end -}}
        - {{.VIP}}
---
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
mode: "ipvs"
ipvs:
        excludeCIDRs: 
        - "{{.VIP}}/32"

让用户自定义修改这个模板。如果不传入kubeadm-config参数就走咱默认的。可行？

[cuisongliu]

sealos generator -t kubeadm-config //生成模板文件
sealos init --kubeadm-config kubeadm-config.yaml //读取kubeadm-config配置文件

[fanux]

可以, 名字改成generate

sealos generate -t kubeadm-config.yaml.tmpl
sealos init --kubeadm-config kubeadm-config.yaml.tmpl

[fanux]

https://github.com/fanux/sealos/releases/tag/v2.0.4 download v2.0.4 to solve this problem