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https://github.com/optim-enterprises-bv/kubernetes.git
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99e2646067
Refactors the functions used in agnhost into different modules, based on their functionality, leaving only the main in the base folder. Future commits will add several functionalities to agnhost, so this change will be necessary to keep it clean.
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
// +build !windows
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/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package dns
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import (
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"strings"
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)
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const etcHostsFile = "/etc/hosts"
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// A /etc/resolv.conf file managed by kubelet looks like this:
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// nameserver DNS_CLUSTER_IP
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// search test-dns.svc.cluster.local svc.cluster.local cluster.local q53aahaikqaehcai3ylfqdtc5b.bx.internal.cloudapp.net
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// options ndots:5
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func getDNSSuffixList() []string {
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fileData := readFile("/etc/resolv.conf")
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lines := strings.Split(fileData, "\n")
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for _, line := range lines {
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if strings.HasPrefix(line, "search") {
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// omit the starting "search".
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return strings.Split(line, " ")[1:]
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}
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}
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panic("Could not find DNS search list!")
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}
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func getDNSServerList() []string {
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fileData := readFile("/etc/resolv.conf")
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lines := strings.Split(fileData, "\n")
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for _, line := range lines {
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if strings.HasPrefix(line, "nameserver") {
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// omit the starting "nameserver".
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return strings.Split(line, " ")[1:]
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}
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}
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panic("Could not find DNS search list!")
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}
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