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Add "dbname=replication" to all replication connection strings

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Previously repmgr was attempting to make replication connections
with "dbname" set to the repmgr database name. While this works
if e.g. the repmgr user also has replication permissions, it will
fail if a dedicated replication user is specified, who only has
permission to access the virtual "replication" database.

Change this to use "dbname=replication" if the replication connection
user is different to the normal repmgr database user.

(We could just always set it to "replication", but that might break
existing installations e.g. where a .pgpass file is in use and there's
no "replication" entry for the normal repmgr database user).

Addresses GitHub #421.
This commit is contained in:
Ian Barwick
2018-04-12 15:03:46 +09:00
parent 99ad57f88a
commit cda952f1e4
2 changed files with 27 additions and 5 deletions
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7
repmgr-action-node.c
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@@ -940,6 +940,7 @@ do_node_check_replication_connection(void)
return;
}
/* retrieve remote node record from local database */
local_conn = establish_db_connection(config_file_options.conninfo, true);
record_status = get_node_record(local_conn, runtime_options.remote_node_id, &node_record);
@@ -956,8 +957,12 @@ do_node_check_replication_connection(void)
initialize_conninfo_params(&remote_conninfo, false);
parse_conninfo_string(node_record.conninfo, &remote_conninfo, NULL, false);
if (strcmp(param_get(&remote_conninfo, "user"), node_record.repluser) != 0)
{
param_set(&remote_conninfo, "user", node_record.repluser);
param_set(&remote_conninfo, "dbname", "replication");
}
param_set(&remote_conninfo, "replication", "1");
param_set(&remote_conninfo, "user", node_record.repluser);
repl_conn = establish_db_connection_by_params(&remote_conninfo, false);