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use printf to replace printenv

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Signed-off-by: Weiping Cai <weiping.cai@daocloud.io>
This commit is contained in:
Weiping Cai
2020-07-01 14:48:38 +08:00
parent 506a57849b
commit 4490fe014f
2 changed files with 22 additions and 24 deletions
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content/en/docs/tasks/inject-data-application/define-interdependent-environment-variables.md
+4 -6
View File
@@ -53,12 +53,10 @@ Pod:
kubectl logs pod/dependent-envars-demo
```
```
SERVICE_ADDRESS
https://172.17.0.1:80
UNCHANGED_REFERENCE
$(PROTOCOL)://172.17.0.1:80
ESCAPED_REFERENCE
$(PROTOCOL)://172.17.0.1:80
UNCHANGED_REFERENCE=$(PROTOCOL)://172.17.0.1:80
SERVICE_ADDRESS=https://172.17.0.1:80
ESCAPED_REFERENCE=$(PROTOCOL)://172.17.0.1:80
```
As shown above, you have defined the correct dependency reference of `SERVICE_ADDRESS`, bad dependency reference of `UNCHANGED_REFERENCE` and skip dependent references of `ESCAPED_REFERENCE`.
content/en/examples/pods/inject/dependent-envars.yaml
+1 -1
View File
@@ -6,7 +6,7 @@ spec:
containers:
- name: dependent-envars-demo
args:
- while true; do echo -en '\n'; echo SERVICE_ADDRESS;printenv SERVICE_ADDRESS;echo UNCHANGE_REFERENCE;printenv UNCHANGE_REFERENCE;echo ESCAPED_REFERENCE;printenv ESCAPED_REFERENCE; sleep 30; done;
- while true; do echo -en '\n'; printf UNCHANGED_REFERENCE=$UNCHANGED_REFERENCE'\n'; printf SERVICE_ADDRESS=$SERVICE_ADDRESS'\n';printf ESCAPED_REFERENCE=$ESCAPED_REFERENCE'\n'; sleep 30; done;
command:
- sh
- -c