percona-server-tools

Manage percona-server server (or any other flavour of MySQL) in Debian-like systems.

Requirements

• mysql (will not be installed)
• mysqld, version >= 5.5 (will not be installed)

Variables

Reset root password

Uses the debian-sys-maint from /etc/mysql/debian.cnf to login with.

• percona_server_tools_reset_root_password: [default: {}]:

• percona_server_tools_reset_root_password.run: [default: false]: Whether or not to run reset-root-password.yml

• percona_server_tools_reset_root_password.root_password: [required]: Root password

• percona_server_tools_reset_root_password.unsafe_variables: [optional, default: []]: Variables (e.g. from plugins) that cause mysqld not to start when started with --skip-grant-tables (e.g. ^query_response_time_)

Resize InnoDB logs

Removes the current InnoDB log files in a safe way.

• percona_server_tools_reset_ib_logfile: [default: {}]:

• percona_server_tools_reset_ib_logfile.run: [default: false]: Whether or not to run reset-ib-logfile.yml

• percona_server_tools_reset_ib_logfile.check_innodb_shutdown_mode: [default: true]: Whether or not to check the InnoDB shutdown mode

• percona_server_tools_reset_ib_logfile.ib_logfiles: [default: [/var/lib/mysql/ib_logfile0, /var/lib/mysql/ib_logfile1]]: InnoDB logs to resize

Setup slave replication (using xtrabackup)

Sets up slave replication on one or more slaves from a healthy master. Assumes that the slaves are able to pull backups using rsync over ssh, so ssh (keys) need to be set up.

Notes

• Recommends using the any_errors_fatal option to interrupt execution on any error

---

• percona_server_tools_setup_slave_replication: [default: {}]:

• percona_server_tools_setup_slave_replication.run: [default: false]: Whether or not to run setup-slave-replication.yml

• percona_server_tools_setup_slave_replication.inventory: [required]: Inventory section

• percona_server_tools_setup_slave_replication.inventory.master: [required]: The inventory hostname of the master server (e.g. db-01.example.com)

• percona_server_tools_setup_slave_replication.inventory.slaves: [required]: The inventory hostname(s) of the slave server(s) (e.g. [db-02.example.com, db-03.example.com])

• percona_server_tools_setup_slave_replication.innobackupex: [required]: Innobackupex section

• percona_server_tools_setup_slave_replication.innobackupex.user: [optional]: Specifies the user (i.e., the MySQL username used when connecting to the server) to login as, if that's not the current user. It is passed to the mysql child process without alteration

• percona_server_tools_setup_slave_replication.innobackupex.password: [optional]: Specifies the password to use when connecting to the database. It is passed to the mysql child process without alteration

• percona_server_tools_setup_slave_replication.innobackupex.parallel: [optional]: Specifies the number of threads the xtrabackup child process should use to back up files concurrently

• percona_server_tools_setup_slave_replication.innobackupex.rsync: [optional]: Use the rsync utility to optimize local file transfers. When this option is specified, innobackupex uses rsync to copy all non-InnoDB files instead of spawning a separate cp for each file, which can be much faster for servers with a large number of databases or tables

• percona_server_tools_setup_slave_replication.innobackupex.backup_dir: [required]: Specifies the backup directory

• percona_server_tools_setup_slave_replication.innobackupex.use_memory: [optional]: Specifies the amount of memory in bytes for xtrabackup to use for crash recovery while preparing a backup

• percona_server_tools_setup_slave_replication.master: [required]: Master section

• percona_server_tools_setup_slave_replication.master.host: [required]: Specifies the MASTER_HOST, needed to setup the replication, but also the pull backups from the master (rsync over ssh) (e.g. {{ hostvars['db-01.example.com']['ansible_eth1']['ipv4']['address'] }})

• percona_server_tools_setup_slave_replication.master.user: [required]: Specifies the MASTER_USER (e.g. replicator)

• percona_server_tools_setup_slave_replication.master.password: [required]: Specifies the MASTER_PASSWORD

• percona_server_tools_setup_slave_replication.ssh_opts: [optional]: SSH options (e.g. ['-o Ciphers=arcfour'])

Setup master replication (using xtrabackup)

Sets up master replication on one master from a healthy master. Assumes that the master is able to pull backups using rsync over ssh, so ssh (keys) need to be set up. Also assumes that there are no writes on the (secondary) master during the run of this playbook.

Notes

• Recommends using the any_errors_fatal option to interrupt execution on any error
• Requires master(1|2).user to have both GRANT REPLICATION SLAVE and REPLICATION CLIENT grants

---

• percona_server_tools_setup_master_replication.run: [default: false]: Whether or not to run setup-master-replication.yml

• percona_server_tools_setup_master_replication.inventory.master1: [required]: The inventory hostname of the (primary) master server (e.g. db-01.example.com)

• percona_server_tools_setup_master_replication.inventory.master2: [required]: The inventory hostname of the (secondary) master server (e.g. db-02.example.com)

• percona_server_tools_setup_master_replication.innobackupex.user: [optional]: Specifies the user (i.e., the MySQL username used when connecting to the server) to login as, if that's not the current user. It is passed to the mysql child process without alteration

• percona_server_tools_setup_master_replication.innobackupex.password: [optional]: Specifies the password to use when connecting to the database. It is passed to the mysql child process without alteration

• percona_server_tools_setup_master_replication.innobackupex.parallel: [optional]: Specifies the number of threads the xtrabackup child process should use to back up files concurrently

• percona_server_tools_setup_master_replication.innobackupex.rsync: [optional]: Use the rsync utility to optimize local file transfers. When this option is specified, innobackupex uses rsync to copy all non-InnoDB files instead of spawning a separate cp for each file, which can be much faster for servers with a large number of databases or tables

• percona_server_tools_setup_master_replication.innobackupex.backup_dir: [required]: Specifies the backup directory

• percona_server_tools_setup_master_replication.innobackupex.use_memory: [optional]: Specifies the amount of memory in bytes for xtrabackup to use for crash recovery while preparing a backup

• percona_server_tools_setup_master_replication.master1.host: [required]: Specifies the MASTER_HOST (on master2), needed to setup the replication, but also the pull backups from the master (rsync over ssh) (e.g. {{ hostvars[percona_server_tools_setup_slave_replication_master]['ansible_eth1']['ipv4']['address'] }})

• percona_server_tools_setup_master_replication.master1.user: [required]: Specifies the MASTER_USER (e.g. replicator)

• percona_server_tools_setup_master_replication.master1.password: [required]: Specifies the MASTER_PASSWORD

• percona_server_tools_setup_master_replication.master2.host: [required]: Specifies the MASTER_HOST (on master1), needed to setup the replication, but also the pull backups from the master (rsync over ssh) (e.g. {{ hostvars[percona_server_tools_setup_slave_replication_master]['ansible_eth1']['ipv4']['address'] }})

• percona_server_tools_setup_master_replication.master2.user: [default: master1.user]: Same as above

• percona_server_tools_setup_master_replication.master2.password: [default: master1.password]: Same as above

• percona_server_tools_setup_master_replication.ssh_opts: [optional]: SSH options (e.g. ['-o Ciphers=arcfour'])

Dependencies

None

Recommended

• percona-client (see)
• percona-server (see)
• ssh-keys (see)

Example(s)

Reset root password

---
- hosts: all
  roles:
    - oefenweb.percona-server-tools
  vars:
    percona_server_tools_reset_root_password:
      run: true
      root_password: '6j~14F(Um~@nAz4hn6dT'

Resize InnoDB logs

---
- hosts: all
  roles:
    - oefenweb.percona-server-tools
  vars:
    percona_server_tools_reset_ib_logfile:
      run: true

Setup slave replication

---
- hosts: all
  roles:
    - oefenweb.percona-server-tools
  vars:
    percona_server_tools_setup_slave_replication:
      run: true
      inventory:
        master: db-01.example.com
        slaves:
          - db-02.example.com

      innobackupex:
        backup_dir: /tmp/xtrabackup

      master:
        host: "{{ hostvars[percona_server_tools_setup_slave_replication_master]['ansible_eth1']['ipv4']['address'] }}"
        user: replicator
        password: 'Z$8>YM"KUVRv6sW#=O-A'

Setup master replication

---
- hosts: all
  roles:
    - oefenweb.percona-server-tools
  vars:
    percona_server_tools_setup_master_replication:
      run: true
      inventory:
        master1: db-01.example.com
        master2: db-02.example.com

      innobackupex:
        backup_dir: /tmp/xtrabackup

      master1:
        host: "{{ hostvars['db-01.example.com']['ansible_eth1']['ipv4']['address'] }}"
        user: replicator
        password: 'Z$8>YM"KUVRv6sW#=O-A'
      master2:
        host: "{{ hostvars['db-02.example.com']['ansible_eth1']['ipv4']['address'] }}"

License

MIT

Author Information

Mischa ter Smitten

Feedback, bug-reports, requests, ...

Are welcome!