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Signed-off-by: Ed Costello <epc@epcostello.com>
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Ed Costello
2015-06-11 01:11:44 -04:00
parent 3ce7fe8310
commit 05714d416b
23 changed files with 31 additions and 31 deletions
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docs/design/expansion.md
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@@ -55,7 +55,7 @@ available to subsequent expansions.
### Use Case: Variable expansion in command
Users frequently need to pass the values of environment variables to a container's command.
Currently, Kubernetes does not perform any expansion of varibles. The workaround is to invoke a
Currently, Kubernetes does not perform any expansion of variables. The workaround is to invoke a
shell in the container's command and have the shell perform the substitution, or to write a wrapper
script that sets up the environment and runs the command. This has a number of drawbacks:
@@ -116,7 +116,7 @@ expanded, then `$(VARIABLE_NAME)` should be present in the output.
Although the `$(var)` syntax does overlap with the `$(command)` form of command substitution
supported by many shells, because unexpanded variables are present verbatim in the output, we
expect this will not present a problem to many users. If there is a collision between a varible
expect this will not present a problem to many users. If there is a collision between a variable
name and command substitution syntax, the syntax can be escaped with the form `$$(VARIABLE_NAME)`,
which will evaluate to `$(VARIABLE_NAME)` whether `VARIABLE_NAME` can be expanded or not.