Documentation ¶
Index ¶
Constants ¶
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const ( PublicDnsRecommendation = "Check your public network connectivity and outbound security settings." CoreDnsRecommendation = "CoreDNS pods might be down. Check their liveness using `kubectl get pods -n kube-system -o wide -l k8s-app=kube-dns`." )
Variables ¶
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var ( GoogleDnsServer = DnsServer{ Name: "Google DNS", Server: "8.8.8.8", Queries: []string{ "www.google.com", "www.bing.com", }, Recommendations: []string{PublicDnsRecommendation}, HelpLinks: []string{ "https://developers.google.com/speed/public-dns", }, } AzureDnsServer = DnsServer{ Name: "Azure DNS", Server: "168.63.129.16", Queries: []string{ "www.google.com", "www.bing.com", }, Recommendations: []string{ PublicDnsRecommendation, "VM might be on a bad host. Try to `redeploy` it.", }, HelpLinks: []string{ "https://docs.microsoft.com/en-us/azure/virtual-network/what-is-ip-address-168-63-129-16", "https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-name-resolution-for-vms-and-role-instances#azure-provided-name-resolution", }, } AksCoreDnsServerPublic = DnsServer{ Name: "AKS Core DNS", Server: "10.0.0.10", Queries: []string{ "www.google.com", "www.bing.com", }, Recommendations: []string{ PublicDnsRecommendation, }, HelpLinks: []string{ "https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/", "https://kubernetes.io/docs/tasks/administer-cluster/coredns/", "https://coredns.io/plugins/kubernetes/", }, } AksCoreDnsServerInCluster = DnsServer{ Name: "AKS Core DNS", Server: "10.0.0.10", Queries: []string{ "kubernetes.default.svc.cluster.local", }, Recommendations: []string{ CoreDnsRecommendation, }, HelpLinks: []string{ "https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/", "https://kubernetes.io/docs/tasks/administer-cluster/coredns/", "https://coredns.io/plugins/kubernetes/", }, } SystemdResolvedDnsServer = DnsServer{ Name: "systemd-resolved", Server: "127.0.0.53", Queries: []string{ "www.google.com", "www.bing.com", }, Recommendations: []string{ "systemd-resolved service might not be running. Check by running `sudo systemctl status systemd-resolved`.", }, HelpLinks: []string{ "https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html", }, } )
Functions ¶
This section is empty.
Types ¶
type DnsChecker ¶
type DnsChecker struct {
// contains filtered or unexported fields
}
func New ¶
func New() *DnsChecker
func (*DnsChecker) Check ¶
func (c *DnsChecker) Check(ctx *base.CheckContext) ([]*base.CheckResult, error)
func (*DnsChecker) Name ¶
func (c *DnsChecker) Name() string
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