我需要在 /etc/mongodb.conf 中编辑一行
auth = true
Augeas 有一个mongo 镜头，但它只适用于 augeas > 1.0
我完全停留在 augeas 0.9 上，因为它是 epel repo 中的最新版本，我无法从 github 编译 augeas。
作为一种解决方法，我正在尝试编写自己的 augeas 镜头，该镜头适用于 augeas 0.9
到目前为止我所拥有的是这个
module Spencer =
autoload xfm
let entry = key /[a-z]+/ . del /[ \t]*=[ \t]*/ "=" . store /[a-z]+/
let lns = [ entry . del "\n" "\n" ] *
test lns get "auth = false\nfoo = bar\n" = ?
let filter = incl "/etc/mongodb.conf"
let xfm = transform lns filter
当我尝试使用 puppet 类型将镜头应用到 /etc/mongodb.conf 时，我收到错误“迭代镜头匹配少于应有的情况”。
puppet apply augmongo.pp --debug --verbose --summarize
Info: Applying configuration version '1385024927'
Debug: Augeas[auth-mongo](provider=augeas): Opening augeas with root /, lens path , flags 64
Debug: Augeas[auth-mongo](provider=augeas): Augeas version 0.9.0 is installed
Test result: /usr/share/augeas/lenses/dist/spencer.aug:8.0-.44:
{ "auth" = "false" }
{ "foo" = "bar" }
Debug: Augeas[auth-mongo](provider=augeas): Will attempt to save and only run if files changed
Debug: Augeas[auth-mongo](provider=augeas): sending command 'set' with params ["/files/etc/mongodb.conf/auth", "true"]
Debug: Augeas[auth-mongo](provider=augeas): Put failed on one or more files, output from /augeas//error:
Debug: Augeas[auth-mongo](provider=augeas): /augeas/files/etc/mongodb.conf/error = put_failed
Debug: Augeas[auth-mongo](provider=augeas): /augeas/files/etc/mongodb.conf/error/pos = 1
Debug: Augeas[auth-mongo](provider=augeas): /augeas/files/etc/mongodb.conf/error/lens = /usr/share/augeas/lenses/dist/spencer.aug:6.10-.37:
Debug: Augeas[auth-mongo](provider=augeas): /augeas/files/etc/mongodb.conf/error/message = Iterated lens matched less than it should
Debug: Augeas[auth-mongo](provider=augeas): Closed the augeas connection
Error: /Stage[main]/Augmongo/Augeas[auth-mongo]: Could not evaluate: Save failed with return code false, see debug
Debug: Finishing transaction 69857417180740
Debug: Storing state
Debug: Stored state in 0.13 seconds
镜头有什么问题？
如何从命令行测试镜头并将 puppet 排除在外？