From: Andrew Morgan
Date: October 4 2012 4:02pm
Subject: RE: Problem with memcached
List-Archive: http://lists.mysql.com/cluster/8409
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Hi Maxime, could you please check the Cluster log (it should be located wit=
h the ndb_mgmd) to see if there's evidence of the memcached trying to conne=
ct? Otherwise, double check that the connect string is for the correct host=
 and port for the ndb_mgmd and that there are no firewall rules that would =
block communication between these hosts.

Regards, Andrew.

Andrew Morgan | MySQL Principal Product Manager
Mobile: +447833483595=20
Web: www.clusterdb.com
United Kingdom

ORACLE Corporation UK Ltd is a company incorporated in England & Wales | Co=
mpany Reg. No. 1782505 | Reg. office: Oracle Parkway, Thames Valley Park, R=
eading RG6 1RA=20

> -----Original Message-----
> From: Maxime Th=E9bault [mailto:webmaster@stripped]
> Sent: 04 October 2012 09:56
> To: cluster@stripped
> Subject: Problem with memcached
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> Hello,
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> I try to configure memcached on my mysql cluster but i have an error.
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> Result of ndb_mgm -e show :
> ndb_mgm -e show
> Connected to Management Server at: 3.3.3.3:1186 Cluster Configuration
> ---------------------
> [ndbd(NDB)]     2 node(s)
> id=3D3    @1.1.1.1  (mysql-5.5.22 ndb-7.2.6, Nodegroup: 0)
> id=3D4    @2.2.2.2  (mysql-5.5.22 ndb-7.2.6, Nodegroup: 0, Master)
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> [ndb_mgmd(MGM)] 2 node(s)
> id=3D1    @3.3.3.3  (mysql-5.5.22 ndb-7.2.6)
> id=3D2    @4.4.4.4  (mysql-5.5.22 ndb-7.2.6)
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> [mysqld(API)]   14 node(s)
> id=3D5    @2.2.2.2  (mysql-5.5.22 ndb-7.2.6)
> id=3D6    @1.1.1.1  (mysql-5.5.22 ndb-7.2.6)
> id=3D7 (not connected, accepting connect from any host)
> id=3D8 (not connected, accepting connect from any host)
> id=3D9 (not connected, accepting connect from any host)
> id=3D10 (not connected, accepting connect from any host)
> id=3D11 (not connected, accepting connect from any host)
> id=3D12 (not connected, accepting connect from any host)
> id=3D13 (not connected, accepting connect from any host)
> id=3D14 (not connected, accepting connect from any host)
> id=3D15 (not connected, accepting connect from any host)
> id=3D16 (not connected, accepting connect from any host)
> id=3D17 (not connected, accepting connect from any host)
> id=3D18 (not connected, accepting connect from any host)
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> But when i execute the command from 1.1.1.1 (api node) :
> memcached -E /usr/local/mysql/lib/ndb_engine.so -u mysql -e
> "connectstring=3D3.3.3.3:1186;role=3Ddb-only;debug=3Dtrue" -vv -c 20
> (3.3.3.3 is the manager)
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> The result is :
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> main --> ndb_initialize()
> main --> connect_to_primary_cluster()
> 04-Oct-2012 10:54:42 CEST NDB Memcache 5.5.22-ndb-7.2.6 started [NDB
> 7.2.6; MySQL 5.5.22] Contacting primary management server
> (37.59.48.15:1186) ...
> main --> ClusterConnectionPool::connect() FAILED.
> Could not connect to NDB.  Shutting down.
> main --> ndb_destroy()
> Failed to initialize instance. Error code: 255
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> I try with localhost, without connectstring...
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> Can you help me ?
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> Many thanks !
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