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kube-bench/cmd/root.go

106 lines
3.1 KiB
Go

// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"os"
"github.com/aquasecurity/kube-bench/check"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
cfgDir = "./cfg"
cfgFile string
jsonFmt bool
checkList string
groupList string
masterFile string
nodeFile string
federatedFile string
kubeConfDir string
etcdConfDir string
flannelConfDir string
)
// RootCmd represents the base command when called without any subcommands
var RootCmd = &cobra.Command{
Use: os.Args[0],
Short: "Run CIS Benchmarks checks against a Kubernetes deployment",
Long: `This tool runs the CIS Kubernetes 1.6 Benchmark v1.0.0 checks.`,
}
// Execute adds all child commands to the root command sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := RootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(-1)
}
}
func init() {
cobra.OnInitialize(initConfig)
RootCmd.PersistentFlags().BoolVar(&jsonFmt, "json", false, "Prints the results as JSON")
RootCmd.PersistentFlags().StringVarP(&checkList,
"check",
"c",
"",
`A comma-delimited list of checks to run as specified in CIS document. Example --check="1.1.1,1.1.2"`,
)
RootCmd.PersistentFlags().StringVarP(&groupList,
"group",
"g",
"",
`Run all the checks under this comma-delimited list of groups. Example --group="1.1"`,
)
RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is ./cfg/config.yaml)")
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" { // enable ability to specify config file via flag
viper.SetConfigFile(cfgFile)
} else {
viper.SetConfigName("config") // name of config file (without extension)
viper.AddConfigPath(cfgDir) // adding ./cfg as first search path
}
viper.SetEnvPrefix("CISK8S")
viper.AutomaticEnv() // read in environment variables that match
// Set defaults
viper.SetDefault("kubeConfDir", "/etc/kubernetes")
viper.SetDefault("etcdConfDir", "/etc/etcd")
viper.SetDefault("flanneldConfDir", "/etc/sysconfig")
viper.SetDefault("masterFile", cfgDir+"/master.yaml")
viper.SetDefault("nodeFile", cfgDir+"/node.yaml")
viper.SetDefault("federatedFile", cfgDir+"/federated.yaml")
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
colorPrint(check.INFO, fmt.Sprintf("Using config file: %s\n", viper.ConfigFileUsed()))
} else {
colorPrint(check.FAIL, fmt.Sprintf("Faied to read config file: %v\n", err))
os.Exit(1)
}
}