sed 无法解析多行字符串 (Jenkins) 参数

Question

我有 app_name 作为多行字符串参数，我想循环它以便为应用程序创建入口对象。

我将它们定义如下：

现在，我的 Jenkins 文件的 shell 脚本 sn-p 如下所示：

echo "${app_name}"
            for i in "${app_name}"; do
                kubectl delete ing ${i} -n${deployment_namespace}
                cp -apvf  /tmp/flexicache-ing.yaml /tmp/flexicache-ing-${i}.yaml
                pwd
                sed -i 's/#{deployment_ns}#/'"${deployment_namespace}"'/' /tmp/flexicache-ing-${i}.yaml
                sed -i 's/#{app_name}#/'"${app_name}"'/' /tmp/flexicache-ing-${i}.yaml
                sed -i 's/#{chart_name}#/'"${app_name}"'/' /tmp/flexicache-ing-${i}.yaml
                kubectl apply -f /tmp/flexicache-ing-${i}.yaml
            done

输出：

+ echo 'flexicache-data-processor
flexicache-incident-data-processor'
flexicache-data-processor
flexicache-incident-data-processor
++ tput bold
+ bold=''
++ tput sgr0
+ normal=''
+ for i in '"${app_name}"'
+ kubectl delete ing flexicache-data-processor flexicache-incident-data-processor -nsit1-blue
Error from server (NotFound): ingresses.extensions "flexicache-data-processor" not found
Error from server (NotFound): ingresses.extensions "flexicache-incident-data-processor" not found
+ cp -apvf /tmp/flexicache-ing.yaml /tmp/flexicache-ing-flexicache-data-processor flexicache-incident-data-processor.yaml
cp: target 'flexicache-incident-data-processor.yaml' is not a directory

我也尝试过使用数组，但似乎效果不佳。

需要了解我做错了什么。

P.S: 修改代码如下：

for i in ${app_name}; do
                kubectl delete ing ${i} -n${deployment_namespace}
                cp -apvf  /tmp/flexicache-ing.yaml /tmp/flexicache-ing-${i}.yaml
                pwd
                sed -i 's/#{deployment_ns}#/'"${deployment_namespace}"'/' /tmp/flexicache-ing-${i}.yaml
                sed -i 's/#{app_name}#/'"${app_name}"'/' /tmp/flexicache-ing-${i}.yaml
                sed -i 's/#{chart_name}#/'"${app_name}"'/' /tmp/flexicache-ing-${i}.yaml
                kubectl apply -f /tmp/flexicache-ing-${i}.yaml
            done

输出仍然失败：

+ sed -i 's/#{app_name}#/flexicache-data-processor
flexicache-incident-data-processor/' /tmp/flexicache-ing-flexicache-data-processor.yaml
sed: -e expression #1, char 40: unterminated `s' command

编辑 2：在 bt 仍然没有工作之前，我确实使用了

            while IFS= read -r i; do
                kubectl delete ing ${i} -n${deployment_namespace}
                cp -apvf  /tmp/flexicache-ing.yaml /tmp/flexicache-ing-${i}.yaml
                pwd
                sed -i 's/#{deployment_ns}#/'"${deployment_namespace}"'/' /tmp/flexicache-ing-${i}.yaml
                sed -i 's/#{app_name}#/'"${app_name}"'/' /tmp/flexicache-ing-${i}.yaml
                sed -i 's/#{chart_name}#/'"${app_name}"'/' /tmp/flexicache-ing-${i}.yaml
                kubectl apply -f /tmp/flexicache-ing-${i}.yaml
            done <<< "${app_name}"

sed 失败的输出...

+ sed -i 's/#{chart_name}#/flexicache-data-processor
flexicache-incident-data-processor/' /tmp/flexicache-ing-flexicache-data-processor.yaml
sed: -e expression #1, char 42: unterminated `s' command

编辑：尝试了下面的代码，没有任何魅力.....

[ec2-user@svcm268fa99bnp ~]$ echo ${app_name}
+ echo flexicache-data-processor flexicache-incident-data-processor
flexicache-data-processor flexicache-incident-data-processor
++ printf '\033]0;%s@%s:%s\007' ec2-user svcm268fa99bnp '~'
[ec2-user@svcm268fa99bnp ~]$ while IFS= read -r i; do cp -apvf /tmp/flexicache-ing.yaml /tmp/flexicache-ing-${i}.yaml; pwd; sed -i 's/#{app_name}#/'"${app_name}"'/' | tr '|' '\n' /tmp/flexicache-ing-${i}.yaml; done <<< "${app_name}"
+ IFS=
+ read -r i
+ cp -apvf /tmp/flexicache-ing.yaml /tmp/flexicache-ing-flexicache-data-processor.yaml
‘/tmp/flexicache-ing.yaml’ -> ‘/tmp/flexicache-ing-flexicache-data-processor.yaml’
+ pwd
/home/ec2-user
+ tr '|' '\n' /tmp/flexicache-ing-flexicache-data-processor.yaml
+ sed -i 's/#{app_name}#/flexicache-data-processor
flexicache-incident-data-processor/'
tr: extra operand ‘/tmp/flexicache-ing-flexicache-data-processor.yaml’
Try 'tr --help' for more information.
sed: -e expression #1, char 40: unterminated `s' command
+ IFS=
+ read -r i
+ cp -apvf /tmp/flexicache-ing.yaml /tmp/flexicache-ing-flexicache-incident-data-processor.yaml
‘/tmp/flexicache-ing.yaml’ -> ‘/tmp/flexicache-ing-flexicache-incident-data-processor.yaml’
+ pwd
/home/ec2-user
+ tr '|' '\n' /tmp/flexicache-ing-flexicache-incident-data-processor.yaml
+ sed -i 's/#{app_name}#/flexicache-data-processor
flexicache-incident-data-processor/'
tr: extra operand ‘/tmp/flexicache-ing-flexicache-incident-data-processor.yaml’
Try 'tr --help' for more information.
sed: -e expression #1, char 40: unterminated `s' command
+ IFS=
+ read -r i
++ printf '\033]0;%s@%s:%s\007' ec2-user svcm268fa99bnp '~'
[ec2-user@svcm268fa99bnp ~]$

Answer 1

在同一个文件上重复运行 sed -i 是您要避免的反模式。

引用输入字符串使循环只运行一次，循环变量等于整个字符串。也许更好的安排是while read 循环，它本质上一次读取一行。

在循环内部，您想使用循环变量$i，而不是整个字符串$app_name。这就是你最后一次尝试的错误所在。

echo "$app_name"
while IFS= read -r i; do
    kubectl delete ing "$i" -n"$deployment_namespace"
    cp -apvf  /tmp/flexicache-ing.yaml /tmp/flexicache-ing-"$i".yaml
    pwd
    sed -e "s/#{deployment_ns}#/$deployment_namespace/" \
        -e "s/#{app_name}#/$i/" \
        -e "s/#{chart_name}#/$i/" /tmp/flexicache-ing.yaml \
            >/tmp/flexicache-ing-"$i".yaml
    kubectl apply -f /tmp/flexicache-ing-"$i".yaml
done <<<"$app_name"

这里的<<< 字符串语法是特定于 Bash 的；如果你不能使用 Bash，试试echo "$app_name" | while IFS= read -r i ...

cp 命令可能是多余的；我把它留了下来，以防cp 的选项做了一些需要保留的重要事情，即使我们随后用新内容覆盖了复制的文件。

您可能想删除循环前的pwd，也许还有echo。

变量名周围的大括号在这里没有什么用处；我将它们取出并添加了proper quoting。我还简化了sed 脚本中的引用；那里似乎不需要单引号。