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bench.go
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bench.go
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package main
import (
"bufio"
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"os/exec"
"sort"
"strings"
"sync"
"syscall"
"text/template"
"time"
"github.com/hashicorp/go-version"
log "github.com/sirupsen/logrus"
"github.com/zhyocean/neuvector/agent/nvbench"
"github.com/zhyocean/neuvector/agent/workerlet"
"github.com/zhyocean/neuvector/share"
"github.com/zhyocean/neuvector/share/cluster"
"github.com/zhyocean/neuvector/share/global"
"github.com/zhyocean/neuvector/share/osutil"
"github.com/zhyocean/neuvector/share/system"
"github.com/zhyocean/neuvector/share/utils"
)
const (
srcSh = "/usr/local/bin/"
dstSh = "/tmp/"
srcHostBenchSh = srcSh + "host.tmpl"
dstHostBenchSh = dstSh + "host.sh"
srcContainerBenchSh = srcSh + "container.tmpl"
dstContainerBenchSh = dstSh + "container.sh"
kube100MasterTmpl = srcSh + "kube_master_1_0_0.tmpl"
kube100WorkerTmpl = srcSh + "kube_worker_1_0_0.tmpl"
kube100Remediation = srcSh + "kubecis_1_0_0.rem"
kube120MasterTmpl = srcSh + "kube_master_1_2_0.tmpl"
kube120WorkerTmpl = srcSh + "kube_worker_1_2_0.tmpl"
kube120Remediation = srcSh + "kubecis_1_2_0.rem"
kube141MasterTmpl = srcSh + "kube_master_1_4_1.tmpl"
kube141WorkerTmpl = srcSh + "kube_worker_1_4_1.tmpl"
kube141Remediation = srcSh + "kubecis_1_4_1.rem"
kube151MasterTmpl = srcSh + "kube_master_1_5_1.tmpl"
kube151WorkerTmpl = srcSh + "kube_worker_1_5_1.tmpl"
kube151Remediation = srcSh + "kubecis_1_5_1.rem"
kube160MasterTmpl = srcSh + "kube_master_1_6_0.tmpl"
kube160WorkerTmpl = srcSh + "kube_worker_1_6_0.tmpl"
kube160Remediation = srcSh + "kubecis_1_6_0.rem"
kubeGKEMasterTmpl = srcSh + "kube_master_gke_1_0_0.tmpl"
kubeGKEWorkerTmpl = srcSh + "kube_worker_gke_1_0_0.tmpl"
kubeGKERemediation = srcSh + "kubecis_gke_1_0_0.rem"
kubeOC43MasterTmpl = srcSh + "kube_master_ocp_4_3.tmpl"
kubeOC43WorkerTmpl = srcSh + "kube_worker_ocp_4_3.tmpl"
kubeOC43Remediation = srcSh + "kubecis_ocp_4_3.rem"
kubeOC45MasterTmpl = srcSh + "kube_master_ocp_4_5.tmpl"
kubeOC45WorkerTmpl = srcSh + "kube_worker_ocp_4_5.tmpl"
kubeOC45Remediation = srcSh + "kubecis_ocp_4_5.rem"
masterScriptSh = dstSh + "kube_master.sh"
workerScriptSh = dstSh + "kube_worker.sh"
checkKubeVersion = srcSh + "check_kube_version.sh"
hostTimerStart = time.Second * 10
containerTimerStart = time.Second * 10
kubeTimerStart = time.Second * 10
scriptTimerStart = time.Second * 1
cmdKubeApiServer = "kube-apiserver"
cmdKubeManager = "kube-controller-manager"
cmdKubeScheduler = "kube-scheduler"
cmdKubeEtcd = "etcd"
cmdKubelet = "kubelet"
cmdKubeProxy = "kube-proxy"
scriptTimeout = 1 * time.Minute
)
type benchPlatform string
const (
benchPlatDocker = "docker"
benchPlatKube = "kube"
)
type benchItem struct {
level string
testNum string
group string
header string
profile string // level 1, 2
scored bool
automated bool
message []string
remediation string
}
type Bench struct {
bEnable bool
mux sync.Mutex
platform string
flavor string
allContainers utils.Set
newContainers map[string]string
remediations map[string]string
hostTimer *time.Timer
conTimer *time.Timer
kubeTimer *time.Timer
customHostTimer *time.Timer
customConTimer *time.Timer
daemonOpts []string
kubeCisCmds map[string]string
isKubeMaster bool
isKubeWorker bool
childCmd *exec.Cmd
hostScript *share.CLUSCustomCheckGroup
hostWarnItems map[string]share.CLUSAuditBenchItem
kubeHostDone bool
dockerHostDone bool
kubeCISVer string
dockerCISVer string
taskScanner *TaskScanner
}
type DockerReplaceOpts struct {
Replace_docker_daemon_opts string
Replace_container_list string
}
type KubeCisReplaceOpts struct {
Replace_apiserver_cmd string
Replace_manager_cmd string
Replace_scheduler_cmd string
Replace_etcd_cmd string
Replace_kubelet_cmd string
Replace_proxy_cmd string
}
func newBench(platform, flavor string) *Bench {
b := &Bench{
bEnable: true,
platform: platform,
flavor: flavor,
allContainers: utils.NewSet(),
newContainers: make(map[string]string),
remediations: make(map[string]string),
hostTimer: time.NewTimer(hostTimerStart),
conTimer: time.NewTimer(containerTimerStart),
kubeTimer: time.NewTimer(kubeTimerStart),
customHostTimer: time.NewTimer(scriptTimerStart),
customConTimer: time.NewTimer(scriptTimerStart),
kubeCisCmds: make(map[string]string),
hostScript: &share.CLUSCustomCheckGroup{},
hostWarnItems: make(map[string]share.CLUSAuditBenchItem),
dockerCISVer: "1.2.0",
}
// Let main program to start bench
b.hostTimer.Stop()
b.conTimer.Stop()
b.kubeTimer.Stop()
b.customHostTimer.Stop()
b.customConTimer.Stop()
// the master and worker's process will be set by probe
//b.kubeCisCmds[cmdKubeApiServer] = cmdKubeApiServer
//b.kubeCisCmds[cmdKubelet] = cmdKubelet
b.kubeCisCmds[cmdKubeManager] = cmdKubeManager
b.kubeCisCmds[cmdKubeScheduler] = cmdKubeScheduler
b.kubeCisCmds[cmdKubeEtcd] = cmdKubeEtcd
b.kubeCisCmds[cmdKubeProxy] = cmdKubeProxy
return b
}
func (b *Bench) logBenchFailure(benchPlat benchPlatform, status share.BenchStatus) {
var event share.TLogEvent
if benchPlat == benchPlatKube {
event = share.CLUSEvBenchKubeFail
} else {
event = share.CLUSEvBenchDockerFail
}
clog := share.CLUSEventLog{
Event: event,
HostID: Host.ID,
HostName: Host.Name,
AgentID: Agent.ID,
AgentName: Agent.Name,
ReportedAt: time.Now().UTC(),
Msg: utils.BenchStatusToStr(status),
}
evqueue.Append(&clog)
}
func (b *Bench) BenchLoop() {
var masterScript, workerScript, remediation string
b.taskScanner = newTaskScanner(b, scanWorkerMax)
//after the host bench, it will schedule a container bench automaticly even if no container
for {
select {
case <-b.hostTimer.C:
b.doDockerHostBench()
case <-b.kubeTimer.C:
// Check version only once
k8sVer, ocVer := global.ORCH.GetVersion()
if masterScript == "" {
// 1.11- : 1.3.0
// 1.13- : 1.4.1
// 1.15- : 1.5.1
// 1.16- : 1.6.0
// GKE: GKE 1.0.0
if b.platform == share.PlatformKubernetes && b.flavor == share.FlavorGKE {
b.kubeCISVer = "GKE-1.0.0"
masterScript = kubeGKEMasterTmpl
workerScript = kubeGKEWorkerTmpl
remediation = kubeGKERemediation
} else if b.platform == share.PlatformKubernetes && b.flavor == share.FlavorOpenShift {
ocVer, err := version.NewVersion(ocVer)
if err != nil {
b.kubeCISVer = "OpenShift-1.1.0"
masterScript = kubeOC45MasterTmpl
workerScript = kubeOC45WorkerTmpl
remediation = kubeOC45Remediation
} else if ocVer.Compare(version.Must(version.NewVersion("4.4"))) >= 0 {
b.kubeCISVer = "OpenShift-1.1.0"
masterScript = kubeOC45MasterTmpl
workerScript = kubeOC45WorkerTmpl
remediation = kubeOC45Remediation
} else {
b.kubeCISVer = "OpenShift-1.1.0"
masterScript = kubeOC43MasterTmpl
workerScript = kubeOC43WorkerTmpl
remediation = kubeOC43Remediation
}
} else {
kVer, err := version.NewVersion(k8sVer)
if err != nil {
b.kubeCISVer = "1.6.0"
masterScript = kube160MasterTmpl
workerScript = kube160WorkerTmpl
remediation = kube160Remediation
} else if kVer.Compare(version.Must(version.NewVersion("1.16"))) >= 0 {
b.kubeCISVer = "1.6.0"
masterScript = kube160MasterTmpl
workerScript = kube160WorkerTmpl
remediation = kube160Remediation
} else if kVer.Compare(version.Must(version.NewVersion("1.15"))) >= 0 {
b.kubeCISVer = "1.5.1"
masterScript = kube151MasterTmpl
workerScript = kube151WorkerTmpl
remediation = kube151Remediation
} else if kVer.Compare(version.Must(version.NewVersion("1.11"))) >= 0 {
b.kubeCISVer = "1.4.1"
masterScript = kube141MasterTmpl
workerScript = kube141WorkerTmpl
remediation = kube141Remediation
} else if kVer.Compare(version.Must(version.NewVersion("1.8"))) >= 0 {
b.kubeCISVer = "1.2.0"
masterScript = kube120MasterTmpl
workerScript = kube120WorkerTmpl
remediation = kube120Remediation
} else {
b.kubeCISVer = "1.0.0"
masterScript = kube100MasterTmpl
workerScript = kube100WorkerTmpl
remediation = kube100Remediation
}
}
b.remediations = b.loadRemediation(remediation)
}
b.doKubeBench(masterScript, workerScript, remediation)
case <-b.conTimer.C:
containers := b.cloneAllNewContainers()
if Host.CapDockerBench {
b.doDockerContainerBench(containers)
} else {
b.putBenchReport(Host.ID, share.BenchDockerContainer, nil, share.BenchStatusFinished)
}
// Run custom checks
wls := make([]*share.CLUSWorkload, 0)
gInfoRLock()
for id, name := range containers {
if c, ok := gInfo.activeContainers[id]; ok {
// skip kubernetes pod
if Host.Platform != share.PlatformKubernetes || c.parentNS != "" {
wls = append(wls, createWorkload(c.info))
group := makeLearnedGroupName(utils.NormalizeForURL(c.service))
b.taskScanner.addScanTask(c.pid, name, id, group)
}
}
}
gInfoRUnlock()
b.doContainerCustomCheck(wls)
case <-b.customConTimer.C:
wls := make([]*share.CLUSWorkload, 0)
gInfoRLock()
for _, c := range gInfo.activeContainers {
// skip kubernetes pod
if Host.Platform != share.PlatformKubernetes || c.parentNS != "" {
wls = append(wls, createWorkload(c.info))
}
}
gInfoRUnlock()
b.doContainerCustomCheck(wls)
case <-b.customHostTimer.C:
b.doHostCustomCheck()
}
}
}
func (b *Bench) doKubeBench(masterScript, workerScript, remediation string) (error, error) {
log.WithFields(log.Fields{"master": b.isKubeMaster, "worker": b.isKubeWorker}).Info()
b.replaceKubeCisCmd(masterScript, masterScriptSh)
b.replaceKubeCisCmd(workerScript, workerScriptSh)
var errMaster, errWorker error
var out []byte
// run master bench
if b.isKubeMaster {
b.putBenchReport(Host.ID, share.BenchKubeMaster, nil, share.BenchStatusRunning)
out, errMaster = b.runKubeBench(share.BenchKubeMaster, masterScriptSh)
if errMaster != nil {
log.WithFields(log.Fields{
"error": errMaster, "script": masterScriptSh,
}).Error("Failed to run kubernetes master benchmark checks")
b.logBenchFailure(benchPlatKube, share.BenchStatusKubeMasterFail)
b.putBenchReport(Host.ID, share.BenchKubeMaster, nil, share.BenchStatusKubeMasterFail)
} else {
list := b.getBenchMsg(out)
b.assignKubeBenchMeta(list)
b.logHostResult(list)
b.putBenchReport(Host.ID, share.BenchKubeMaster, list, share.BenchStatusFinished)
}
}
// run worker bench
if b.isKubeWorker {
b.putBenchReport(Host.ID, share.BenchKubeWorker, nil, share.BenchStatusRunning)
out, errWorker = b.runKubeBench(share.BenchKubeWorker, workerScriptSh)
if errWorker != nil {
log.WithFields(log.Fields{
"error": errWorker, "script": workerScriptSh,
}).Error("Failed to run kubernetes worker benchmark checks")
b.logBenchFailure(benchPlatKube, share.BenchStatusKubeWorkerFail)
b.putBenchReport(Host.ID, share.BenchKubeWorker, nil, share.BenchStatusKubeWorkerFail)
} else {
list := b.getBenchMsg(out)
b.assignKubeBenchMeta(list)
b.logHostResult(list)
b.putBenchReport(Host.ID, share.BenchKubeWorker, list, share.BenchStatusFinished)
}
}
b.kubeHostDone = true
return errMaster, errWorker
}
func (b *Bench) AddContainer(id, name string) {
b.mux.Lock()
defer b.mux.Unlock()
b.allContainers.Add(id)
b.newContainers[id] = name
b.conTimer.Reset(containerTimerStart)
}
func (b *Bench) RemoveContainer(id string) {
b.mux.Lock()
defer b.mux.Unlock()
b.allContainers.Remove(id)
delete(b.newContainers, id)
b.conTimer.Reset(containerTimerStart)
// TODO: delete existing keys
}
func (b *Bench) triggerContainerCustomCheck() {
b.customConTimer.Reset(scriptTimerStart)
}
func (b *Bench) triggerHostCustomCheck(script *share.CLUSCustomCheckGroup) {
b.hostScript = script
b.customHostTimer.Reset(scriptTimerStart)
}
func (b *Bench) RerunDocker() {
log.Info("")
if err := b.dockerCheckPrerequisites(); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Cannot run Docker CIS benchmark")
b.logBenchFailure(benchPlatDocker, share.BenchStatusNotSupport)
b.putBenchReport(Host.ID, share.BenchDockerHost, nil, share.BenchStatusNotSupport)
} else {
b.hostTimer.Reset(hostTimerStart)
b.conTimer.Reset(containerTimerStart)
b.putBenchReport(Host.ID, share.BenchDockerHost, nil, share.BenchStatusScheduled)
}
}
func (b *Bench) RerunKube(cmd, cmdRemap string) {
log.Info("")
if cmd != "" && cmdRemap != "" {
b.kubeCisCmds[cmd] = cmdRemap
}
masterErr, workerErr := b.kubeCheckPrerequisites()
_, b.isKubeMaster = b.kubeCisCmds[cmdKubeApiServer]
_, b.isKubeWorker = b.kubeCisCmds[cmdKubelet]
var sched bool
if masterErr != nil {
log.WithFields(log.Fields{"error": masterErr}).Error("Cannot run master node CIS benchmark")
b.putBenchReport(Host.ID, share.BenchKubeMaster, nil, share.BenchStatusNotSupport)
} else if !b.isKubeMaster {
log.Info("Not a kubernetes master node")
b.putBenchReport(Host.ID, share.BenchKubeMaster, nil, share.BenchStatusIdle)
} else {
b.putBenchReport(Host.ID, share.BenchKubeMaster, nil, share.BenchStatusScheduled)
sched = true
}
if workerErr != nil {
log.WithFields(log.Fields{"error": workerErr}).Error("Cannot run worker node CIS benchmark")
b.putBenchReport(Host.ID, share.BenchKubeWorker, nil, share.BenchStatusNotSupport)
} else if !b.isKubeWorker {
log.Info("Not a kubernetes worker node")
b.putBenchReport(Host.ID, share.BenchKubeWorker, nil, share.BenchStatusIdle)
} else {
b.putBenchReport(Host.ID, share.BenchKubeWorker, nil, share.BenchStatusScheduled)
sched = true
}
if sched {
b.kubeTimer.Reset(kubeTimerStart)
}
}
func (b *Bench) ResetDockerStatus() {
b.putBenchReport(Host.ID, share.BenchDockerHost, nil, share.BenchStatusIdle)
}
func (b *Bench) ResetKubeStatus() {
b.putBenchReport(Host.ID, share.BenchKubeMaster, nil, share.BenchStatusIdle)
b.putBenchReport(Host.ID, share.BenchKubeWorker, nil, share.BenchStatusIdle)
}
func (b *Bench) cloneAllNewContainers() map[string]string {
b.mux.Lock()
defer b.mux.Unlock()
adds := make(map[string]string, len(b.newContainers))
for id, name := range b.newContainers {
adds[id] = name
}
b.newContainers = make(map[string]string, 0)
return adds
}
func (b *Bench) parseBenchMsg(line string) (*benchItem, bool) {
var level, id, msg, profile string
var scored, automated bool
if strings.Contains(line, "[INFO]") {
level = share.BenchLevelInfo
} else if strings.Contains(line, "[PASS]") {
level = share.BenchLevelPass
} else if strings.Contains(line, "[WARN]") {
level = share.BenchLevelWarn
} else if strings.Contains(line, "[NOTE]") {
level = share.BenchLevelNote
} else {
return nil, false
}
a := strings.Index(line, "0m ")
if a == -1 {
return nil, false
}
c := strings.Index(line, " - ")
if c != -1 {
// Item headline
id = strings.TrimSpace(line[a+3 : c])
// Ignore the section title
if strings.Index(id, ".") == -1 {
return nil, false
}
if x := strings.Index(line, "[Scored]"); x != -1 {
scored = true
}
if x := strings.Index(line, "[Automated]"); x != -1 {
automated = true
}
if x := strings.Index(line, "[Level 1]"); x != -1 {
profile = share.BenchProfileL1
} else if x = strings.Index(line, "[Level 2]"); x != -1 {
profile = share.BenchProfileL2
}
} else {
// Item's following line
c = strings.Index(line, " * ")
if c == -1 {
return nil, false
}
}
msg = line[c+3:]
msg = strings.ReplaceAll(msg, "(Scored)", "")
msg = strings.ReplaceAll(msg, "(Not Scored)", "")
msg = strings.ReplaceAll(msg, "(Automated)", "")
msg = strings.ReplaceAll(msg, "(Manual)", "")
msg = strings.TrimSpace(msg)
return &benchItem{
level: level, testNum: id, header: msg,
scored: scored, automated: automated, profile: profile,
}, true
}
//replace the docker daemon config line, so that can run the script without pid=host
func (b *Bench) replaceDockerDaemonCmdline(srcPath, dstPath string, containers []string) error {
dat, err := ioutil.ReadFile(srcPath)
if err != nil {
return err
}
f, err := os.Create(dstPath)
if err != nil {
return err
}
defer f.Close()
//containers only apply to container.sh, no effect to host.sh, because no <<<Containers>>> in it
var containerLines string
if len(containers) > 0 {
containerLines = "containers=\"\n" + strings.Join(containers, "\n") + "\"\n"
} else {
containerLines = "containers=\"\"\n"
}
r := DockerReplaceOpts{
Replace_docker_daemon_opts: strings.Join(b.daemonOpts, " "),
Replace_container_list: containerLines,
}
t := template.New("bench")
t.Delims("<<<", ">>>")
t.Parse(string(dat))
if err = t.Execute(f, r); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Executing template error")
return err
}
return nil
}
//if enforcer not running in pid host mode, change the audit warn to info
//because auditctl can not run without the pid host mode
/*
func (b *Bench) filterResult(list []*benchItem) {
for _, l := range list {
// TODO: skip all nv container
newMsg := make([]string, 0)
for _, m := range l.message {
name := b.getContainerName(m)
if name != Agent.Name {
newMsg = append(newMsg, m)
}
}
if len(l.message) > 0 && len(newMsg) == 0 && l.level == levelWarn {
l.level = levelPass
}
l.message = newMsg
if strings.HasPrefix(l.header, "Audit") &&
strings.HasPrefix(l.testNum, "1.") &&
Agent.PidMode != "host" &&
l.level == levelWarn {
l.level = levelInfo
}
}
}
*/
func (b *Bench) assignKubeBenchMeta(list []*benchItem) {
for _, l := range list {
if r, ok := b.remediations[l.testNum]; ok {
l.remediation = r
}
l.testNum = fmt.Sprintf("K.%s", l.testNum)
}
}
func (b *Bench) assignDockerBenchMeta(list []*benchItem) {
for _, l := range list {
if !nvbench.DockerNotScored.Contains(l.testNum) {
l.scored = true
}
if !nvbench.DockerLevel2.Contains(l.testNum) {
l.profile = share.BenchProfileL1
} else {
l.profile = share.BenchProfileL2
}
l.testNum = fmt.Sprintf("D.%s", l.testNum)
}
}
func (b *Bench) getContainerName(msg string) string {
if i := strings.Index(msg, ": "); i > 0 {
return msg[i+2:]
} else {
return ""
}
}
// check if last item should be accepted or ignored
func (b *Bench) acceptBenchItem(last, item *benchItem) bool {
if last == nil {
return false
}
// 1.2 should be ignored if the next line has 1.2. prefix
if item != nil && strings.HasPrefix(item.testNum, fmt.Sprintf("%s.", last.testNum)) {
return false
}
// Ignore NOTE and INFO entries
if last.level == share.BenchLevelNote || last.level == share.BenchLevelInfo {
return false
}
return true
}
func (b *Bench) getBenchMsg(out []byte) []*benchItem {
list := make([]*benchItem, 0)
scanner := bufio.NewScanner(strings.NewReader(string(out)))
var last, item *benchItem
for scanner.Scan() {
// Read output line-by-line. Every check forms a item,
// the first line is the header and the rest form the message
line := scanner.Text()
if c, ok := b.parseBenchMsg(line); ok {
if c.testNum == "" && item != nil {
item.message = append(item.message, c.header)
} else {
if item != nil {
// add the last item to the result
if b.acceptBenchItem(last, item) {
list = append(list, last)
}
last = item
}
item = c
}
}
}
if item != nil {
// add the last item to the result
if b.acceptBenchItem(last, item) {
list = append(list, last)
}
if b.acceptBenchItem(item, nil) {
list = append(list, item)
}
}
return list
}
func (b *Bench) kubeCheckPrerequisites() (error, error) {
kmasterProgs := []string{"grep", "pgrep", "sed", "kubectl"}
masterError := b.checkRequiredHostProgs(kmasterProgs)
kworkerProgs := []string{"grep", "pgrep", "sed"}
workerError := b.checkRequiredHostProgs(kworkerProgs)
return masterError, workerError
}
func (b *Bench) dockerCheckPrerequisites() error {
if _, err := os.Stat(srcHostBenchSh); os.IsNotExist(err) {
return fmt.Errorf("Docker bench host template not exist")
}
if _, err := os.Stat(srcContainerBenchSh); os.IsNotExist(err) {
return fmt.Errorf("Docker bench container template not exist")
}
progs := []string{"awk", "grep", "stat", "docker"}
if err := b.checkRequiredHostProgs(progs); err != nil {
return err
}
// If failed to get docker daemon arguments, the bench can still do other items check,
// but the item about the docker daemon is not correct
opts, err := osutil.GetContainerDaemonArgs()
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("Get Docker daemon arguments fail")
return fmt.Errorf("Get Docker daemon arguments fail")
} else {
b.daemonOpts = opts
}
return nil
}
func (b *Bench) runDockerHostBench() ([]byte, error) {
if !b.bEnable {
return nil, fmt.Errorf("Session ended")
}
if err := b.replaceDockerDaemonCmdline(srcHostBenchSh, dstHostBenchSh, nil); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Replace host docker daemon cmdline error")
return nil, err
}
args := []string{system.NSActRun, "-f", dstHostBenchSh,
"-m", global.SYS.GetMountNamespacePath(1), "-n", global.SYS.GetNetNamespacePath(1)}
var errb, outb bytes.Buffer
log.WithFields(log.Fields{"args": args}).Debug("Running bench script")
cmd := exec.Command(system.ExecNSTool, args...)
cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
cmd.Stdout = &outb
cmd.Stderr = &errb
b.childCmd = cmd
err := cmd.Start()
if err != nil {
log.WithFields(log.Fields{"error": err, "msg": errb.String()}).Error("Start")
return nil, err
}
pgid := cmd.Process.Pid
global.SYS.AddToolProcess(pgid, 1, "host-bench", dstHostBenchSh)
err = cmd.Wait()
global.SYS.RemoveToolProcess(pgid, false)
out := outb.Bytes()
b.childCmd = nil
if err != nil || len(out) == 0 {
if err == nil {
err = fmt.Errorf("Error executing docker bench")
}
log.WithFields(log.Fields{"error": err, "msg": errb.String()}).Error("Done")
return nil, err
}
return out, nil
}
func (b *Bench) doDockerHostBench() error {
log.Debug()
b.putBenchReport(Host.ID, share.BenchDockerHost, nil, share.BenchStatusRunning)
out, err := b.runDockerHostBench()
b.dockerHostDone = true
if err != nil {
b.logBenchFailure(benchPlatDocker, share.BenchStatusDockerHostFail)
b.putBenchReport(Host.ID, share.BenchDockerHost, nil, share.BenchStatusDockerHostFail)
return err
}
log.Info("Running benchmark checks done")
list := b.getBenchMsg(out)
b.assignDockerBenchMeta(list)
b.logHostResult(list)
b.putBenchReport(Host.ID, share.BenchDockerHost, list, share.BenchStatusFinished)
return nil
}
func (b *Bench) doDockerContainerBench(containers map[string]string) error {
b.putBenchReport(Host.ID, share.BenchDockerContainer, nil, share.BenchStatusRunning)
if out, err := b.runDockerContainerBench(containers); err != nil {
b.logBenchFailure(benchPlatDocker, share.BenchStatusDockerContainerFail)
b.putBenchReport(Host.ID, share.BenchDockerContainer, nil, share.BenchStatusDockerContainerFail)
return err
} else {
log.Info("Running benchmark checks done")
list := b.getBenchMsg(out)
b.assignDockerBenchMeta(list)
b.putBenchReport(Host.ID, share.BenchDockerContainer, list, share.BenchStatusFinished)
// Going through each container, write report and log
for id, name := range containers {
items, warns := b.getContainerItems(name, list)
log.WithFields(log.Fields{"id": id, "items": len(items), "fails": len(warns)}).Debug()
b.mux.Lock()
if b.allContainers.Contains(id) {
b.putBenchReport(id, share.BenchContainer, items, share.BenchStatusFinished)
}
b.mux.Unlock()
if len(warns) > 0 {
b.logContainerResult(name, id, warns, share.CLUSAuditComplianceContainerBenchViolation)
}
}
return nil
}
}
// This function returns per-container checks. The first value returned is all checks related to the container,
// the second is those failed checks.
func (b *Bench) getContainerItems(cname string, list []*benchItem) ([]*benchItem, []*benchItem) {
items := make([]*benchItem, 0)
warns := make([]*benchItem, 0)
for _, l := range list {
item := *l
item.message = make([]string, 0)
fail := false
for _, msg := range l.message {
// remove the container name and only keep the beginning as the messages
tail := fmt.Sprintf(" %s", cname)
if strings.HasSuffix(msg, tail) {
nmsg := strings.TrimRight(msg, tail)
nmsg = strings.TrimRight(nmsg, ":")
item.message = append(item.message, nmsg)
fail = true
break
}
}
if fail {
warns = append(warns, &item)
} else {
item.level = share.BenchLevelPass
}
items = append(items, &item)
}
return items, warns
}
func (b *Bench) doContainerCustomCheck(wls []*share.CLUSWorkload) {
log.Debug("")
for _, wl := range wls {
if items := b.runCustomScript(wl); len(items) > 0 {
b.mux.Lock()
if b.allContainers.Contains(wl.ID) {
b.putBenchReport(wl.ID, share.BenchCustomContainer, items, share.BenchStatusFinished)
}
b.mux.Unlock()
warns := make([]*benchItem, 0)
for _, l := range items {
if l.level == share.BenchLevelWarn || l.level == share.BenchLevelError {
warns = append(warns, l)
}
}
if len(warns) > 0 {
b.logContainerResult(wl.Name, wl.ID, warns, share.CLUSAuditComplianceContainerCustomCheckViolation)
}
}
}
log.Info("Running benchmark checks done")
}
func (b *Bench) doHostCustomCheck() {
log.Debug("")
b.mux.Lock()
scripts := b.hostScript.Scripts
b.mux.Unlock()
items := make([]*benchItem, 0)
for _, s := range scripts {
ret, msg, err := b.runScript(s.Script, 1)
log.WithFields(log.Fields{"Script": s.Name, "msg": msg}).Debug("run host script")
item := &benchItem{
testNum: s.Name,
group: "nodes",
header: msg,
}
if err == nil {
if ret {
item.level = share.BenchLevelPass
} else {
item.level = share.BenchLevelWarn
}
} else {
item.level = share.BenchLevelError
}
items = append(items, item)
}
// Write to the cluster
b.putBenchReport(Host.ID, share.BenchCustomHost, items, share.BenchStatusFinished)
b.logHostCustomCheckResult(items)
log.Info("Finish host custom check script")
}
func (b *Bench) runDockerContainerBench(containers map[string]string) ([]byte, error) {
if !b.bEnable {
return nil, fmt.Errorf("Session ended")
}
cs := make([]string, len(containers))
i := 0
for _, name := range containers {
cs[i] = name
i++
}
if err := b.replaceDockerDaemonCmdline(srcContainerBenchSh, dstContainerBenchSh, cs); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Replace container docker daemon cmdline error")
return nil, fmt.Errorf("Replace container docker daemon cmdline error, error=%v", err)
}
args := []string{system.NSActRun, "-f", dstContainerBenchSh, "-m", global.SYS.GetMountNamespacePath(1)}
var errb, outb bytes.Buffer
log.WithFields(log.Fields{"args": args}).Debug("Running bench script")
cmd := exec.Command(system.ExecNSTool, args...)
cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
cmd.Stdout = &outb
cmd.Stderr = &errb
b.childCmd = cmd
err := cmd.Start()
if err != nil {
log.WithFields(log.Fields{"error": err, "msg": errb.String()}).Error("Start")
return nil, err
}
pgid := cmd.Process.Pid
global.SYS.AddToolProcess(pgid, 1, "container-docker-bench", dstContainerBenchSh)
err = cmd.Wait()
global.SYS.RemoveToolProcess(pgid, false)
out := outb.Bytes()
b.childCmd = nil
if err != nil || len(out) == 0 {
if err == nil {
err = fmt.Errorf("Error executing docker bench")
}
log.WithFields(log.Fields{"error": err, "msg": errb.String()}).Error("Done")
return nil, err
}
return out, nil
}
func (b *Bench) runCustomScript(wl *share.CLUSWorkload) []*benchItem {
items := make([]*benchItem, 0)
grpScripts := make(map[string]*share.CLUSCustomCheckGroup, 0)
groupMux.Lock()
for _, grp := range groups {
if grp.script != nil && share.IsGroupMember(grp.group, wl) {
grpScripts[grp.group.Name] = grp.script
}
}
groupMux.Unlock()
for grpName, script := range grpScripts {
log.WithFields(log.Fields{"name": wl.Name, "group": grpName, "script": script}).Debug("selected")
for _, s := range script.Scripts {
ret, msg, err := b.runScript(s.Script, wl.Pid)
msg = strings.TrimRight(msg, "\r\n")
log.WithFields(log.Fields{"Script": s.Name, "name": wl.Name, "msg": msg, "err": err}).Debug("run script")
item := &benchItem{
testNum: s.Name,
group: grpName,
header: msg,
}
if err == nil {
if ret {
item.level = share.BenchLevelPass
} else {
item.level = share.BenchLevelWarn
}
} else {
item.level = share.BenchLevelError
}
items = append(items, item)
}
}
return items
}
func (b *Bench) runScript(script string, pid int) (bool, string, error) {
if !b.bEnable {
return false, "Session ended", fmt.Errorf("Session ended")