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Default monitoring roles

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Three nologin roles with non-overlapping privs are created by default
* pg_read_all_settings - read all GUCs.
* pg_read_all_stats - pg_stat_*, pg_database_size(), pg_tablespace_size()
* pg_stat_scan_tables - may lock/scan tables

Top level role - pg_monitor includes all of the above by default, plus others

Author: Dave Page
Reviewed-by: Stephen Frost, Robert Haas, Peter Eisentraut, Simon Riggs
This commit is contained in:
Simon Riggs
2017-03-30 14:18:53 -04:00
parent e984ef5861
commit 25fff40798
30 changed files with 196 additions and 55 deletions
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3
src/backend/replication/walreceiver.c
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@@ -50,6 +50,7 @@
#include "access/timeline.h"
#include "access/transam.h"
#include "access/xlog_internal.h"
#include "catalog/pg_authid.h"
#include "catalog/pg_type.h"
#include "funcapi.h"
#include "libpq/pqformat.h"
@@ -1421,7 +1422,7 @@ pg_stat_get_wal_receiver(PG_FUNCTION_ARGS)
/* Fetch values */
values[0] = Int32GetDatum(walrcv->pid);
if (!superuser())
if (!is_member_of_role(GetUserId(), DEFAULT_ROLE_READ_ALL_STATS))
{
/*
* Only superusers can see details. Other users only get the pid value