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ansible default 行為

預設要觸發 default 值,需要上一個變數是未定義

"{{ undefined_variable | default(default_var) }}"

只有 undefinedvariable 未定義時,才會使用 defaultvar 的值

如果需要上一個變數是空值時,則用預設值,需要傳入 true 到 default 的第二個參數

"{{ empty_value | default(default_var, true) }}"

如果 emptyvalue 是空字串空陣列等,則會使用 defaultvar 的值


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