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ansible-role-percona

Ansible playbook to install, configure, monitor percona MySQL on RHEL/CentOS servers.

test with ansible 2.2.0.0

###note: install percona MySQL in linux generic way.

Requirements

pre_packages:

  - openssl098e.x86_64
  - perl-DBD-MySQL.x86_64
  - perl-DBI.x86_64
  - perl-Time-HiRes.x86_64
  - perl-TermReadKey.x86_64
  - MySQL-python.x86_64
  - numactl.x86_64

The perl package ensure that percona toolkit and percona-xtrabackup can be use; if percona Server support numa features, numactl shuld be installed. if you want manage MySQL with ansible, MySQL-python shuld be installed.

Structure after installed

/web/mysql/node3303/
├── data
│   ├── ibdata1
│   ├── ib_logfile0
│   ├── ib_logfile1
│   ├── ib_lru_dump
│   ├── mysql
│   ├── mysql-bin.000001
│   ├── mysql-bin.000002
│   ├── mysql-bin.000003
│   ├── mysql-bin.index
│   ├── mysql.pid
│   ├── performance_schema
│   ├── query.log
│   ├── s3303
│   ├── slow-query.log
│   └── test
├── my
├── my.node.cnf
├── node
├── noderc
├── README.txt
├── start
├── status
├── stop
└── use

/web/mysql: mysql instance dir.

nodexxxx: node name with port number.

data: mysql data dir.

s3303: mysql socket file.

my.node.cnf: mysql configuration file.

mysql manage tool:

  - README.txt
  - my
  - node
  - noderc
  - start  # start mysql instance
  - status # check status instance
  - stop   # stop mysql instance
  - use    # login mysql instance

Role Variables

Available variables are listed below, almost with default values (see defaults/main.yml):

percona_binary

Generic binary file path, such as "/root/Percona-Server-5.5.36-rel34.1-642.Linux.x86_64.tar.gz", see test/test.yml, if not exists mysql_basedir, ansible will extra binary file.

percona_ver

Specify percona MySQL version to identify different MySQL Server, and configure with matched percona variables.

mysql_numa

Whether enable numa feature or not, if yes, numactl shoule be installed.

mysql_malloclib

Configures libjemalloc if mysql_malloclib is yes.

mysql_basedir

MySQL base dir.

mysql_node

Multi mysql instance dir, one instance matched nodexxxx dir.

netaddress

Specify the network card to get the ip address, and calculate MySQL server id.

mysql_replication_role
mysql_replication_user

Setup the MySQL replication, the role is master or slave.

mysql_replication_master

Setup the master ip address for the slave host.

git_url
monitor_user
monitor_host

monitor mysql with zabbix and create monitor user.

mysql_root_username
mysql_root_password
mysql_run_user

The MySQL root user account name and password. run_user specify the user who run mysql process.

mysql_port
mysql_bind_address
mysql_node
mysql_nodedir
mysql_datadir
mysql_pid_file
mysql_socket
mysql_character_set
mysql_general_ci

MySQL connection settings.

mysql_slow_query_log_enabled: yes
mysql_slow_query_log_file: "slow-query.log"
mysql_slow_query_time: 1

Slow query log settings.

mysql_key_buffer_size: "64M"
mysql_max_allowed_packet: "32M"
mysql_table_open_cache: "1024"
mysql_sort_buffer_size: "2M"
mysql_read_buffer_size: "2M"
mysql_join_buffer_size: "2M"
mysql_read_rnd_buffer_size: "4M"
mysql_myisam_sort_buffer_size: "32M"
mysql_thread_cache_size: "64"
mysql_query_cache_size: "16M"
mysql_max_connections: 3000
mysql_max_connect_errors: 100000

MySQL's memory usage settings.

mysql_innodb_file_per_table: "1"
mysql_innodb_buffer_pool_size: "12228M"
mysql_innodb_additional_mem_pool_size: "20M"
mysql_innodb_log_file_size: "256M"
mysql_innodb_log_buffer_size: "16M"
mysql_innodb_flush_log_at_trx_commit: "2"
mysql_default_storage_engine: "innodb"
mysql_innodb_lock_wait_timeout: 50
mysql_innodb_read_io_threads: 8
mysql_innodb_write_io_threads: 8

MySQL innodb setttings. see templates/my.node.cnf.j2

Example Playbook

see tests dirs install Percona MySQL replication with ansible

inventory configure

[master]
10.0.21.7 mysql_replication_role='master'

[slave]
10.0.21.17 mysql_replication_role='slave'

[mysqldb:children]
master
slave

[mysqldb:vars]
percona_binary="/root/Percona-Server-5.6.21-rel69.0-675.Linux.x86_64.tar.gz"
percona_ver=56
gtid_mode=1
mysql_numa=yes
mysql_malloclib=yes
mysql_port=3308
mysql_basedir="/opt/{{ percona_binary | regex_replace('\.tar\.gz|\/root\/','') }}"
mysql_node="/web/mysql"
netaddress="{{ ansible_eth0.ipv4.address }}"
monitor_user="monitor"
monitor_host="{{ netaddress | regex_replace('.\\d+$','.%') }}"
mysql_replication_master='10.0.21.7'
mysql_replication_user_name='user_replica'
mysql_replication_user_host="{{ monitor_host }}"
mysql_replication_user_password='C_KJuDZMDLWvCAex'
mysql_replication_user_priv='*.*:REPLICATION SLAVE'
mha_node_rpm=mha4mysql-node-0.56-0.el6.noarch.rpm
mha_node_rpm_path="/root/{{ mha_node_rpm }}"
git_url='https://github.com/chenzhe07/zabbix_mysql.git'

the following vars can be change depend on your replication env:

percona_binary
percona_ver
mysql_port
mysql_replication_master

repl_test.yml configure

---
- hosts: master
  remote_user: root
  roles:
      - ansible-role-percona

- hosts: slave
  remote_user: root
  vars:
      mysql_replication_port: "{{ mysql_port }}"
  roles:
      - ansible-role-percona

run with: ansible-playbook --verbose -i tests/inventory tests/repl_test.yml

License

MIT / BSD