合并YAML数组，忽略YAML中的其他字段
合并YAML数组，忽略YAML中的其他字段
提问于 2021-01-07 19:04:27
我正在寻找一种方法来合并来自两个独立的YAML的数组(将一个附加到另一个)。但是，YAML有一个用{}包装的字段(不在数组中)，它将被替换为运行时值。i.e
# yaml a
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
namespace: default
name: {clusterRoleName}
rules:
- apiGroups: [""]
resources: ["pods"]
verbs: ["get", "watch", "list"]
# yaml b
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
namespace: default
name: {clusterRoleName}
rules:
- apiGroups: ["apps"]
resources: ["deployments"]
verbs: ["get", "watch", "list"]
# desired
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
namespace: default
name: {clusterRoleName}
rules:
- apiGroups: [""]
resources: ["pods"]
verbs: ["get", "watch", "list"]
- apiGroups: ["apps"]
resources: ["deployments"]
verbs: ["get", "watch", "list"]我使用的是yq版本2.14。我尝试过yq merge -a=append a.yaml b.yaml，它可以按我喜欢的方式处理规则数组，但将name: {clusterRoleName}视为JSON和输出：
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
namespace: default
name: {ClusterRoleName: ''}
...有没有一种方法可以只合并一个字段，或者忽略特定的键或值类型？如果有人能够提出替代方法，我也不会使用yq来解决这个问题。
Stack Overflow用户
回答已采纳
发布于 2021-01-08 20:41:33
虽然使用专用的yaml解析器(如yq )将是理想的，但使用awk可能是一种替代方案：
awk 'NR==FNR && !/^[[:space:]]/ { tag=$1;next } tag=="rules:" && FNR==NR { map[idx++]=$0 } END { tag="" } NR!=FNR && !/^[[:space:]]/ { if (tag=="rules:") { for (i in map) { print map[i]}} tag=$1 } NR!=FNR { print }' yamlb yamla解释：
awk 'NR==FNR && !/^[[:space:]]/ { # Processing yamlb (NR==FNR) and there there are spaces at the beginning of the line
tag=$1; # Set the variable tag to the first space delimited field
next # Skip to the next file
}
tag=="rules:" && FNR==NR { # Process where tag is "rules:" and we are processing yamlb
map[idx++]=$0 # Put the line in an array map with in incrementing index
}
END {
tag="" # At the end of the file reset the variable tag
}
NR!=FNR && !/^[[:space:]]/ { # Process yamla where there are no spaces at the start of the line
if (tag=="rules:") {
for (i in map) {
print map[i] # If tag is equal to rules: print the array map
}
}
tag=$1 # Set the variable tag to the first space delimited field.
}
NR!=FNR {
print # Print lines when we are processing yamla
}' yamlb yamla页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65611163
复制相关文章
相似问题
腾讯云开发者
