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Description:
Discussion about Codership products
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Galera issue
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I have installed galera with a Clustercontrol and two nodes DB01 & DB02 its well synchronised but there was a problem now that cluster control was restarted so DB01 & DB02 is syncd but clustercontrol is not Again i started services of Clustercontrol it worked,i started services but not syncd showed as wsrep_cluster_size=1... more »
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advice on reference node failure / recovery
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Hello, everyone, I would appreciate a bit of advice concerning the following scenario: Galera cluster (percona release) with 3 nodes (N1, N2, N3), out of which N1 is considered as a reference node. N1 has wsrep_cluster_address='gcom:// ', while N2 and N3 have it pointing to the IP of N1 (perhaps this is what I'm doing wrong, but need a double... more »
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User privileges replication
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Hi, Is this normal that this query is not propagated/replicated over the whole cluster please : SET PASSWORD FOR 'root'@'localhost' = PASSWORD( '********' ) This change the local node password on which I'm currently connected but does not update the password on the others connected node ? Thanks.... more »
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partial error when doing SST
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Hi guys, we are having some weird issue.
We got a 4 master cluster schema with galera/mysql 5.5.23 ( 3 r/w
nodes and one node of reference )
We create a new database and filled it with tables and data.
After that, i ran a "mysqldump" from the node of reference, and the
dump is ok, THEN! i stop and start the node of reference, the SST is... more »
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handlersocket and replication galera working together?
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I have installed Percona Xtradb Cluster Server 5.5 and set up galera replication. Everything worked fine so far. Then I wanted to install the handlersocket plugin in mysql, but it didn't worked out . After many tests, I came to a conclusion: - if i install percona-server-server-5.5 package, I can install... more »
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Galera configuration tips required for best usage
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Hi, I finally got the new hardware for my cluster so now we are running a full 3 nodes cluster using HP servers with Intel Xeon CPU X5690@ 3.47GHz, 156GB of RAM and a RAID-5 array of 7.4TB and the file system is XFS. I set up the cluster using Ubuntu 12.04 and now I am looking for the best configuration of my.cnf and wsrep.cnf.... more »
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Network IO performance
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Hi, I successfully installed Galera 5.5 on our latest hardware running Ubuntu 12.04. I am connected behind a Gigabit Switch, the DB size is about 40GB, plus all the network adapters (10) are sync in gigabits as per ethtool. When it needs to make a full state backup from one node to the others (I have 3 live nodes running all the exact same hardware) it only transfer at... more »
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Successfully installed galera
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Hi all,
I'm new to galera and by write up's as well as by googling i have
successfully installed galera which comprises of
1 -Cluster control
2 - Database 1
3 - Database 2
I have tested for replication but how come I can use galera more
productive and what parameters required to be alerted for performance... more »
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Serveral issue with 50GB data
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Hello all, I've setup a Galera cluster (using percona apt) trying to migrate our database to Galera cluster: ii percona-xtradb-cluster-galera- 2.x 112.squeeze Galera components of Percona XtraDB Cluster ii percona-xtradb-cluster-server- 5.5 5.5.23-23.5-333.squeeze Percona Server database server binaries... more »
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big db sync at node joining behaviour
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Hi! I set up replication on a two node cluster. Changed wsrep cluster address to other's node address and tested replication on small dbs. Everything was working perfectly. I tried a previous scenario (first server down, making changes on the second one) with a greater database (aprox. 40 GB). Now, it tells me failed... more »
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