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Changes in v1.2.9

Feb 8th, 2015

  • MySQL Replication (master ↔master) should not upgrade.
  • Support for PostgreSQL Servers!
      • Add Existing PostgreSQL Server (standalone). Only v9.x supported.
      • Monitor and schedule backups.
      • Query Monitor.
  • Port 9500 must be open on the controller for internal communication between UI and the CMON process.
  • Port 9999 (by default) must be open bi-directionally between controller and data nodes for streaming backups (mysqldumps, xtrabackup, pgdump).
  • Galera Cluster.
      • Bootstrap Cluster. Select a DB node to initialize the cluster from. Optionally enable/force SST for joining nodes and forcefully stop (SIGKILL) nodes.
      • Stop Cluster forcefully (SIGKILL) or with a graceful shutdown time.
      • Start DB node. Optionally enable SST at startup.
      • Stop DB node forcefully (SIGKILL) or with a graceful shutdown time.
      • Make a non-primary DB node primary.
      • Replication Slave Setup for Galera Cluster (GTID support). Slaves are bootstrapped with a Xtrabackup stream from a chosen Master.
      • Failover replication (GTID only) slave from to a new master.
      • Stage replication slave from master (Xtrabackup streamed from master to slave), useful in event of slave corruption.
      • Enable SSL Replication Encryption on the Galera Cluster. 2048-bit default key and certificate generated on the ClusterControl node and transferred to all the Galera nodes automatically.
      • SSL support between controller and managed nodes.
      • wsrep-recover is used to discover the most advanced Galera Node for recovery operations.
      • Removed manipulation of wsrep_cluster_address in my.cnf files meaning ClusterControl no longer makes any alterations of a node’s configuration file.
      • Backup functionality completely re-written, and netcat port for streaming backups is user specified.
      • Restore ClusterControl originated or external made backups on selected hosts.
      • Alarm is raised if a node has set wsrep_cluster_address=gcomm://.
      • Improved logging and hints to assist with failed recovery attempts.
      • Enable/Disable Node/Cluster Auto Recovery from UI.
  • Advanced HAProxy Deployment Settings
      • Set for example client and server timeouts, max connections for frontend and backend. Select which backend servers are Active or Backup.
      • It is possible to enable/disable nodes part of a load balancer.
      • Built-in HAProxy Statistics. No longer need to launch separate window to monitor the HAProxy performance.
      • Template configuration is stored on the controller in /usr/share/cmon/templates/haproxy,cfg , mysqlchk.*, and mysqlchk_xinetd and allows for pre-install modifications.
  • Deadlock and long running queries detection
      • db_long_query_time_alarm (specify in cmon.cnf). If a query takes longer than db_long_query_time_alarm to execute an alarm will be raised containing detailed information about blocked and long running transactions. db_long_query_time_alarm = 0 (disable), default value 5.
  • MySQL Replication / Single MySQL Server
      • Failover replication (GTID only) slave from to a new master.
      • Stage replication slave from master (Xtrabackup streamed from master to slave), useful in event of slave corruption.
  • MongoDB Cluster
      • New Overview page with global lock stats.
  • A new more modern front-end theme
      • Re-organized Cluster specific actions into an easy to access list.
      • A global alarm list which shows alarms per cluster. No need to drill into each cluster to see the alarms anymore.
  • Deprecated scripts (most of the below functionalities are now handled directly by the Controller process):
      • s9s_haproxy
      • s9s_backup/s9s_backupc
      • s9s_galera (—install/remove-garbd)
      • s9s_sw_update deprececated for mariadb/percona apt/yum installs
  • Chef recipe & Puppet manifest for ClusterControl Controller (CMON)
  • Zabbix Template, see http://www.severalnines.com/blog/clustercontrol-template-zabbix
  • Changes in the Controller (CMON)
    • New configuration options (cmon.cnf)
    • Enable_mysql_timemachine =[0|1] , default is 0, meaning it is disabled.
    • cmondb_ssl_key= path to SSL key, for SSL encryption between CMON and the CMON DB.
    • cmondb_ssl_cert = path to SSL cert, for SSL encryption between CMON and the CMON DB.
    • cmondb_ssl_ca = path to SSL CA, for SSL encryption between CMON and the CMON DB.
    • cluster_ssl_key= path to SSL key, for SSL encryption between CMON and managed MySQL Servers.
    • cluster_ssl_cert = path to SSL cert, for SSL encryption between CMON and managed MySQL Servers.
    • cluster_ssl_ca = path to SSL CA, for SSL encryption between CMON and managed MySQL Servers.
    • cluster_certs_store = path to storage location of SSL related files, defaults to /etc/ssl/<clustertype>/<cluster_id>
  • Monitoring:
    • New binary format for host statistics which consumes less space (cpu, memory, disk, network stats).
    • Fixed disk statistics collector to support non 4K block sizes.
  • Security:
    • E-mails do not contain IP addresses when hostnames are specified in the cmon configuration.
    • Password will not be logged (to jobs for example) or sent anymore.
  • Alarms:
    • Alarm will be raised when there is a missing MySQL GRANT.
    • Alarm will be raised/sent when there is a high IO wait for a period (>=50% average in 10 minutes).
    • New alarm for Galera configuration problems.
    • Improved alarm emails (for example: high cpu/mem usage mails will contain the output of ‘top’ command).
  • RPC:
    • Several new RPC interfaces (directly on the daemon) for jobs and statistics handling.
    • The web client has started to migrate over to use RPC API calls instead of the CMON API.
  • Testing:
    • Acceptance testsuite which runs daily using vm instances.
  • Other:
    • Job failures are much better explained.
    • Huge refactor for cluster handling, it is now mostly unifiedI.
    • Mproved host/node handling (makes it possible later on to add support for multiple services on a single host).
    • Better CentOS7 / systemd support.
    • Cmon init script updates (and unified across distros [redhat/debian]).
    • Support for more detailed SSH logging if needed.
    • Agents are no longer supported.
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