Thread: BDR error while adding 3rd node to cluster
Hi Everyone,
I am trying to setup three node bdr cluster, I am following the quick start guide,hakuna=# SELECT bdr.bdr_group_join(
local_node_name := 'node3',
node_external_dsn := 'host=pg3 port=5432 dbname=hakuna',
join_using_dsn := 'host=pg1 port=5432 dbname=hakuna'
);
ERROR: node identity for node_external_dsn does not match current node when connecting back via remote
DETAIL: The dsn '' connects to a node with identity (6229651217067355961,1,17161) but the local node is (6229649404569370556,1,19247)
HINT: The 'node_external_dsn' parameter must refer to the node you're running this function from, from the perspective of the node pointed to by join_using_dsn
I am able to access all three nodes to each other using psql.
--
On 21 December 2015 at 22:57, Amit Bondwal <bondwal.amit@gmail.com> wrote:
It is working well between first and 2nd node, but When I try to add 3rd node, it give the below error.Hi Everyone,I am trying to setup three node bdr cluster, I am following the quick start guide,
hakuna=# SELECT bdr.bdr_group_join(
local_node_name := 'node3',
node_external_dsn := 'host=pg3 port=5432 dbname=hakuna',
join_using_dsn := 'host=pg1 port=5432 dbname=hakuna'
);
ERROR: node identity for node_external_dsn does not match current node when connecting back via remote
DETAIL: The dsn '' connects to a node with identity (6229651217067355961,1,17161) but the local node is (6229649404569370556,1,19247)
Huh. That's interesting. The dsn '<empty string>'.
How'd we get there?
Can you show the output of
select * from bdr.bdr_nodes;
select * from bdr.bdr_connections;
on the new node you're trying to join?
On Tue, Dec 22, 2015 at 10:05 AM, Craig Ringer <craig@2ndquadrant.com> wrote:
select * from bdr.bdr_connections;
Hi Craig, Thanks for your reply, These commands shows nothing on 3rd node.
on node3:-
hakuna=# select * from bdr.bdr_nodes;
node_sysid | node_timeline | node_dboid | node_status | node_name | node_local_dsn | node_init_from_dsn
------------+---------------+------------+-------------+-----------+----------------+--------------------
(0 rows)
conn_sysid | conn_timeline | conn_dboid | conn_origin_sysid | conn_origin_timeline | conn_origin_dboid | conn_is_unidirectional | conn_dsn | conn_apply_delay | conn_replication_sets
------------+---------------+------------+-------------------+----------------------+-------------------+------------------------+----------+------------------+-----------------------
(0 rows)
on node3:-
hakuna=# select * from bdr.bdr_nodes;
node_sysid | node_timeline | node_dboid | node_status | node_name | node_local_dsn | node_init_from_dsn
------------+---------------+------------+-------------+-----------+----------------+--------------------
(0 rows)
conn_sysid | conn_timeline | conn_dboid | conn_origin_sysid | conn_origin_timeline | conn_origin_dboid | conn_is_unidirectional | conn_dsn | conn_apply_delay | conn_replication_sets
------------+---------------+------------+-------------------+----------------------+-------------------+------------------------+----------+------------------+-----------------------
(0 rows)
on node1:-
hakuna=# select * from bdr.bdr_nodes;
node_sysid | node_timeline | node_dboid | node_status | node_name | node_local_dsn | node_init_from_dsn
---------------------+---------------+------------+-------------+-----------+----------------------------------+----------------------------------
6229651184159874988 | 1 | 18719 | r | node1 | host=pg1 port=5432 dbname=hakuna |
6229651217067355961 | 1 | 17161 | r | node2 | host=pg2 port=5432 dbname=hakuna | host=pg1 port=5432 dbname=hakuna
(2 rows)
hakuna=# select * from bdr.bdr_nodes;
node_sysid | node_timeline | node_dboid | node_status | node_name | node_local_dsn | node_init_from_dsn
---------------------+---------------+------------+-------------+-----------+----------------------------------+----------------------------------
6229651184159874988 | 1 | 18719 | r | node1 | host=pg1 port=5432 dbname=hakuna |
6229651217067355961 | 1 | 17161 | r | node2 | host=pg2 port=5432 dbname=hakuna | host=pg1 port=5432 dbname=hakuna
(2 rows)
It is conflicting with ID of node 2 as it shows output of above command on node 1.
My OS is debian Jessie and I installed it from bdr repo. Current version of bdr is 0.9.3
Hi Craig,
I remove all the bdr packages and reinstall it and setup again the BDR cluster, still facing the same issue on 3rd node.
I remove all the bdr packages and reinstall it and setup again the BDR cluster, still facing the same issue on 3rd node.
On Tue, Dec 22, 2015 at 10:58 AM, Amit Bondwal <bondwal.amit@gmail.com> wrote:
On Tue, Dec 22, 2015 at 10:05 AM, Craig Ringer <craig@2ndquadrant.com> wrote:select * from bdr.bdr_connections;Hi Craig, Thanks for your reply, These commands shows nothing on 3rd node.
on node3:-
hakuna=# select * from bdr.bdr_nodes;
node_sysid | node_timeline | node_dboid | node_status | node_name | node_local_dsn | node_init_from_dsn
------------+---------------+------------+-------------+-----------+----------------+--------------------
(0 rows)
conn_sysid | conn_timeline | conn_dboid | conn_origin_sysid | conn_origin_timeline | conn_origin_dboid | conn_is_unidirectional | conn_dsn | conn_apply_delay | conn_replication_sets
------------+---------------+------------+-------------------+----------------------+-------------------+------------------------+----------+------------------+-----------------------
(0 rows)on node1:-
hakuna=# select * from bdr.bdr_nodes;
node_sysid | node_timeline | node_dboid | node_status | node_name | node_local_dsn | node_init_from_dsn
---------------------+---------------+------------+-------------+-----------+----------------------------------+----------------------------------
6229651184159874988 | 1 | 18719 | r | node1 | host=pg1 port=5432 dbname=hakuna |
6229651217067355961 | 1 | 17161 | r | node2 | host=pg2 port=5432 dbname=hakuna | host=pg1 port=5432 dbname=hakuna
(2 rows)It is conflicting with ID of node 2 as it shows output of above command on node 1.My OS is debian Jessie and I installed it from bdr repo. Current version of bdr is 0.9.3
On 22 December 2015 at 17:00, Amit Bondwal <bondwal.amit@gmail.com> wrote:
-- I remove all the bdr packages and reinstall it and setup again the BDR cluster, still facing the same issue on 3rd node.
At this point I'd really need to see the steps taken, in detail, to get to that point from a clean initial state.
If I had to guess right now I'd say that the host pg3 isn't actually the node node3 that you are connected to when you're joining the node, i.e. the error message is correctly telling you that you've given the wrong external DSN.
Thanks you very much Craig for this help. This is the error due to dns entry I pointed pg3 on two different IP.
I regret for wasting your precious time that I could not pick such a small thing.
I regret for wasting your precious time that I could not pick such a small thing.
thanks again.
On Thu, Dec 24, 2015 at 3:55 PM, Craig Ringer <craig@2ndquadrant.com> wrote:
On 22 December 2015 at 17:00, Amit Bondwal <bondwal.amit@gmail.com> wrote:--I remove all the bdr packages and reinstall it and setup again the BDR cluster, still facing the same issue on 3rd node.At this point I'd really need to see the steps taken, in detail, to get to that point from a clean initial state.If I had to guess right now I'd say that the host pg3 isn't actually the node node3 that you are connected to when you're joining the node, i.e. the error message is correctly telling you that you've given the wrong external DSN.