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Don't allow data_directory to be set in postgresql.auto.conf by ALTER SYSTEM.

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data_directory could be set both in postgresql.conf and postgresql.auto.conf so far.
This could cause some problematic situations like circular definition. To avoid such
situations, this commit forbids a user to set data_directory in postgresql.auto.conf.

Backpatch this to 9.4 where ALTER SYSTEM command was introduced.

Amit Kapila, reviewed by Abhijit Menon-Sen, with minor adjustments by me.
This commit is contained in:
Fujii Masao
2014-06-19 20:31:20 +09:00
parent df8b7bc9ff
commit 9ba78fb0b9
3 changed files with 26 additions and 6 deletions
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10
doc/src/sgml/ref/alter_system.sgml
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@@ -76,6 +76,16 @@ ALTER SYSTEM SET <replaceable class="PARAMETER">configuration_parameter</replace
</variablelist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
This command can't be used to set <xref linkend="guc-data-directory">
and any parameters (e.g., <link linkend="runtime-config-preset">preset options</>)
that are not allowed in <filename>postgresql.conf</>.
</para>
</refsect1>
<refsect1>
<title>Examples</title>