我正在嘗試從我的容器中運行一些 kubectl 命令。package mainimport ( "fmt" "os/exec") op, err := GetPods("test-containers", "qa") if err != nil { fmt.Printf("\nError: %v", err) } fmt.Printf(op)func GetPods(name, namespace string) (podName string, err error) { fmt.Println("Get pod names ....") cmd := "kubectl get pods -n " + namespace + " -o wide | grep " + name + " | awk '{print $1}' " cmnd, err := exec.Command("sh", "-c", cmd).Output() if err != nil { fmt.Println("Failed to find pod name." + string(cmnd)) } podName = string(cmnd) return}我的多級 Dockerfile 基于 Alpine3.6 并安裝了 kubectl 二進制文件。FROM alpine:3.6RUN apk add --update curl wget ca-certificates unzip python py-pip openssl bash && \ apk --update add openssh-client && \ apk --update add --virtual build-dependencies python-dev libffi-dev openssl-dev build-base && \ apk add --no-cache --upgrade bash && \ pip install --upgrade pip cffi && \ pip install awscli && \ wget https://storage.googleapis.com/kubernetes-release/release/v1.15.1/bin/linux/amd64/kubectl && \ chmod u+x kubectl && mv kubectl /bin/kubectl && \ apk del build-dependencies && \ rm -rf /var/cache/apk/*ENV HOME=/go/app/WORKDIR /go/appCOPY --from=go-container-build /go/app/ .ENTRYPOINT ["bash"]當我將容器作為 pod 運行并嘗試執行命令時；我總是遇到以下錯誤：cmd: kubectl -n qa get pods -o wide | grep test-containers | awk '{print $1}'Failed to find pod name.exit status 2/bin/sh: illegal option -我也嘗試過使用 os.exec.Command() exec.Command("/bin/sh", "-c", cmd)，exec.Command("/bin/bash", "-c", cmd)但我遇到了類似的錯誤。Failed to find pod name.exit status 2/bin/sh: illegal option -我也直接試過cmnd := exec.Command(cmd)；但我得到了錯誤：Failed to find pod name.fork/exec kubectl -n qa get pods -o wide | grep test-containers | awk '{print $1}':executable file not found in $PATH我已經在容器中安裝了 bash，當我直接在容器 shell 上運行命令時，我總是得到輸出。
1 回答
偶然的你
TA貢獻1841條經驗 獲得超3個贊
/bin/sh: 非法選項 -
是因為-carg 解析器將其解釋為/bin/sh "- "- 具有諷刺意味的是（？）您的golang代碼段是正確的，但是您粘貼的代碼部分和問題的癥結顯示了錯誤的語法
無需涉及busybox或其他任何東西，就可以輕松地重現這一點
package main
import (
"fmt"
"os/exec"
)
func main() {
// c, err := exec.Command("/bin/sh", "-c", "echo -n hello | grep lo").Output()
c, err := exec.Command("/bin/sh", "-c ", "echo -n hello | grep lo").Output()
if err != nil {
ee := err.(*exec.ExitError)
panic(fmt.Errorf("c is %q and err is %q and stderr is %q", string(c), err, string(ee.Stderr)))
}
fmt.Println("OK")
}
結果，panic: c is "" and err is "exit status 2" and stderr is "/bin/sh: - : invalid option\n如果交換注釋行，它會打印OK
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