1、quote 强制转换字符串 " " ， squote 强制转换成字符串 ' '
# 示例
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name }}
version: {{ .Values.app.version }} # 添加一个version的标签
template:
metadata:
labels:
app: {{ .Chart.Name }}
version: {{ .Values.app.version }} # 添加一个version的标签
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
name: nginx
[root@master-11 mychart]# cat values.yaml
replicas: 1
image:
repository: registry.cn-beijing.aliyuncs.com/xwk123/nginx
tag: aaa
nodePort: 30000
app: # 添加标签
version: 1
[root@master-11 mychart]# helm install nginx . # 这里安装提示需要字符串类型的标签
Error: INSTALLATION FAILED: Deployment in version "v1" cannot be handled as a Deployment: json: cannot unmarshal number into Go struct field LabelSelector.spec.selector.matchLabels of type string
# 使用quote转换
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name }}
version: {{ quote .Values.app.version }} # 在前面添加quote
template:
metadata:
labels:
app: {{ .Chart.Name }}
version: {{ quote .Values.app.version }} # # 在前面添加quote
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
name: nginx
# 再次安装
[root@master-11 mychart]# helm uninstall nginx
release "nginx" uninstalled
[root@master-11 mychart]# helm install nginx .
NAME: nginx
LAST DEPLOYED: Sat Oct 4 00:09:58 2025
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: mychart-svc
labels:
app: mychart
spec:
type: NodePort
selector:
app: mychart
ports:
- port: 80
targetPort: 80
nodePort: 30000
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: mychart
version: "1" # 这个地方可以看见多了一个双引号，
template:
metadata:
labels:
app: mychart
version: "1"
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:aaa"
name: nginx
# squote和quote的区别就是squote是转换为'',示例
[root@master-11 mychart]# cat values.yaml
replicas: 1
image:
repository: registry.cn-beijing.aliyuncs.com/xwk123/nginx
tag: aaa
nodePort: 30000
app:
version: 1
enable: true # 添加
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }} # 添加squote
template:
metadata:
labels:
app: {{ .Chart.Name }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }} # 添加squote
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
name: nginx
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: mychart-svc
labels:
app: mychart
spec:
type: NodePort
selector:
app: mychart
ports:
- port: 80
targetPort: 80
nodePort: 30000
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: mychart
version: "1"
enable: 'true' # 变成了单引号
template:
metadata:
labels:
app: mychart
version: "1"
enable: 'true' # 变成了单引号
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:aaa"
name: nginx
2、default默认值
# 示例
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
template:
metadata:
labels:
app: {{ .Chart.Name }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "1" }}" # 在这个地方添加 | default "1"表示在.Values.image.tag不存在时将默认值设置为1
name: nginx
# 将tag注释掉
[root@master-11 mychart]# cat values.yaml
replicas: 1
image:
repository: registry.cn-beijing.aliyuncs.com/xwk123/nginx
# tag: aaa
nodePort: 30000
app:
version: 1
enable: true
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: mychart-svc
labels:
app: mychart
spec:
type: NodePort
selector:
app: mychart
ports:
- port: 80
targetPort: 80
nodePort: 30000
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: mychart
version: "1"
enable: 'true'
template:
metadata:
labels:
app: mychart
version: "1"
enable: 'true'
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:1" # 将tag注释掉以后使用了默认值"1"
name: nginx
3、upper,title,lower大小写转换
# upper将全部字母大写，title将首字母大写，lower全部小写，示例
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }} # 在后面添加| upper表示将所有的字母大写
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
template:
metadata:
labels:
app: {{ .Chart.Name | upper }} # 在后面添加| upper表示将所有的字母大写
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "1" }}"
name: nginx
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: mychart-svc
labels:
app: mychart
spec:
type: NodePort
selector:
app: mychart
ports:
- port: 80
targetPort: 80
nodePort: 30000
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: MYCHART # 这个地方成功的变成了大写
version: "1"
enable: 'true'
template:
metadata:
labels:
app: MYCHART # 这个地方成功的变成了大写
version: "1"
enable: 'true'
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:1"
name: nginx
4、indent,nindent缩进与换行缩进
# 效果展示
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name | indent 5 }} # 在后面添加| indent 5表示缩进5个字符
name: {{ .Chart.Name | nindent 5 }} # 在后面添加| nindent 5表示换行缩进5个字符
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
template:
metadata:
labels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "1" }}"
name: nginx
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart # 安装后这前面多了5个空格
name: # 这个地方放了一行并多了5个空格
mychart
spec:
replicas: 1
selector:
matchLabels:
app: MYCHART
version: "1"
enable: 'true'
template:
metadata:
labels:
app: MYCHART
version: "1"
enable: 'true'
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:1"
name: nginx
5、toYaml拷贝yaml块
# 示例
[root@master-11 mychart]# cat values.yaml
replicas: 1
image:
repository: registry.cn-beijing.aliyuncs.com/xwk123/nginx
# tag: aaa
#nodePort: 30000
app:
version: 1
enable: true
resources: # 在values字段中将resources下面的字段全部添加上
requests:
cpu: 1
memory: 1Gi
limits:
cpu: 2
memory: 2Gi
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
template:
metadata:
labels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "1" }}"
name: nginx
resources: {{ toYaml .Values.resources | nindent 10 }} # toYaml可以将values下的resources字段下的值全部引用，就像下面注释的效果一样，如果ninden不加上的话则requests就会跑到resources的同一行，所以需要给requests换一行再进行缩进
# resources:
# requests:
# cpu: 1
# memory: 1Gi
# limits:
# cpu: 2
# memory: 2Gi
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: MYCHART
version: "1"
enable: 'true'
template:
metadata:
labels:
app: MYCHART
version: "1"
enable: 'true'
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:1"
name: nginx
resources: # 此时resources的字段下的内容就都被打印出来了，可以在values中随意修改cpu与内存的值
limits:
cpu: 2
memory: 2Gi
requests:
cpu: 1
memory: 1Gi
# resources:
# requests:
# cpu: 1
# memory: 1Gi
# limits:
# cpu: 2
# memory: 2Gi
6、printf格式化输出
# 示例
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version) }} # 使用printf将后面的两个参数以"%s字符串-%s字符串"进行打印
template:
metadata:
labels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version) }} # 使用printf将后面的两个参数以"%s字符串-%s字符串"进行打印
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "1" }}"
name: nginx
resources: {{ toYaml .Values.resources | nindent 10 }}
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: MYCHART
version: "1"
enable: 'true'
chart: 'mychart-0.1.0' # 两个值成功以字符串的形式被拼接在一起
template:
metadata:
labels:
app: MYCHART
version: "1"
enable: 'true'
chart: 'mychart-0.1.0' # 两个值成功以字符串的形式被拼接在一起
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:1"
name: nginx
resources:
limits:
cpu: 2
memory: 2Gi
requests:
cpu: 1
memory: 1Gi
7、replace "A" "B"替换
# 示例
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version | replace "-" "_" ) }} # 在后面添加| replace "-" "_" 表示将"-"替换成"_"
template:
metadata:
labels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version | replace "-" "_" ) }} # 在后面添加| replace "-" "_" 表示将"-"替换成"_"
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "1" }}"
name: nginx
resources: {{ toYaml .Values.resources | nindent 10 }}
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: MYCHART
version: "1"
enable: 'true'
chart: 'mychart_0.1.0'
template:
metadata:
labels:
app: MYCHART
version: "1"
enable: 'true'
chart: 'mychart_0.1.0'
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:1"
name: nginx
resources:
limits:
cpu: 2
memory: 2Gi
requests:
cpu: 1
memory: 1Gi
8、trunc将字符缩短到指定长度，trimSuffix删除指定后缀，trimPrifix删除指定前缀
# 示例
[root@master-11 mychart]# cat values.yaml
replicas: 1
image:
repository: registry.cn-beijing.aliyuncs.com/xwk123/nginx
# tag: aaa
#nodePort: 30000
app:
version: 1
enable: true
resources:
requests:
cpu: 1
memory: 1Gi
limits:
cpu: 2
memory: 2Gi
address: # 将示例字段添加进去
a: beijing
b: shanghai
c: guangzhou
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version | replace "-" "_" ) }}
template:
metadata:
labels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version | replace "-" "_" ) }}
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "v1" }}"
name: nginx
resources: {{ toYaml .Values.resources | nindent 10 }}
env:
- name: address_a
value: {{ squote ( .Values.address.a | trunc 3 ) }} # 将地址a的字段裁剪到只剩3个字符
- name: address_b
value: {{ squote ( .Values.address.b | trimSuffix "hai" ) }} # 剔除结尾的hai
- name: address_c
value: {{ squote ( .Values.address.c | trimPrefix "guang" ) }} # 剔除开头的guang
[root@master-11 mychart]# helm template nginx .
---
# Source: mychart/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: mychart
name: mychart
spec:
replicas: 1
selector:
matchLabels:
app: MYCHART
version: "1"
enable: 'true'
chart: 'mychart_0.1.0'
template:
metadata:
labels:
app: MYCHART
version: "1"
enable: 'true'
chart: 'mychart_0.1.0'
spec:
containers:
- image: "registry.cn-beijing.aliyuncs.com/xwk123/nginx:v1"
name: nginx
resources:
limits:
cpu: 2
memory: 2Gi
requests:
cpu: 1
memory: 1Gi
env:
- name: address_a
value: 'bei'
- name: address_b
value: 'shang'
- name: address_c
value: 'zhou'
9、namespace优先级
[root@master-11 mychart]# cat templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: {{ .Chart.Name }}
name: {{ .Chart.Name }}
namespace: kube-system # 指定命名空间kube-system，安装时再次指定不一样的命名空间
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version | replace "-" "_" ) }}
template:
metadata:
labels:
app: {{ .Chart.Name | upper }}
version: {{ quote .Values.app.version }}
enable: {{ squote .Values.enable }}
chart: {{ squote (printf "%s-%s" .Chart.Name .Chart.Version | replace "-" "_" ) }}
spec:
containers:
- image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "v1" }}"
name: nginx
resources: {{ toYaml .Values.resources | nindent 10 }}
env:
- name: address_a
value: {{ squote ( .Values.address.a | trunc 3 ) }}
- name: address_b
value: {{ squote ( .Values.address.b | trimSuffix "hai" ) }}
- name: address_c
value: {{ squote ( .Values.address.c | trimPrefix "guang" ) }}
# 指定default命名空间
[root@master-11 mychart]# helm install nginx . -n default
NAME: nginx
LAST DEPLOYED: Sun Oct 5 00:49:44 2025
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
国亲节快乐
[root@master-11 mychart]# kubectl get pods # 此时default没有需要的资源
NAME READY STATUS RESTARTS AGE
[root@master-11 mychart]# kubectl get pods -n kube-system | grep mychart # 出现在了kube-system命名空间下
mychart-5f5c8df96f-x8lzr 1/1 Running 0 117s
# 由此可见当deployment中写了namespace后，helm -n就没有啥意义了
浙公网安备 33010602011771号