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tags/1.0
Ales Komarek 9 jaren geleden
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11 gewijzigde bestanden met toevoegingen van 798 en 0 verwijderingen
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      README.rst
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      galera/files/debian.cnf
  3. +189
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      galera/files/my.cnf
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      galera/files/my.cnf.bootstrap
  5. +188
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      galera/files/my.cnf.init
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      galera/init.sls
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      galera/map.jinja
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      galera/master.sls
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      galera/slave.sls
  10. +19
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      metadata/galera/service/master/cluster.yml
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      metadata/galera/service/slave/cluster.yml

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README.rst Bestand weergeven

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======
Galera
======

Galera Cluster for MySQL is a true Multimaster Cluster based on synchronous replication. Galera Cluster is an easy-to-use, high-availability solution, which provides high system uptime, no data loss and scalability for future growth.

Sample pillars
==============

Galera cluster master node

.. code-block:: yaml

galera:
master:
enabled: true
name: openstack
bind:
address: 192.168.0.1
port: 3306
members:
- host: 192.168.0.1
port: 4567
- host: 192.168.0.2
port: 4567
admin:
user: root
password: pass
database:
name:
encoding: 'utf8'
users:
- name: 'username'
password: 'password'
host: 'localhost'
rights: 'all privileges'

Galera cluster slave node

.. code-block:: yaml

galera:
slave:
enabled: true
name: openstack
bind:
address: 192.168.0.2
port: 3306
members:
- host: 192.168.0.1
port: 4567
- host: 192.168.0.2
port: 4567
admin:
user: root
password: pass

Usage
=====

MySQL Galera check sripts

.. code-block:: bash
mysql> SHOW STATUS LIKE 'wsrep%';

mysql> SHOW STATUS LIKE 'wsrep_cluster_size' ;"

Galera monitoring command, performed from extra server

.. code-block:: bash

garbd -a gcomm://ipaddrofone:4567 -g my_wsrep_cluster -l /tmp/1.out -d

1. salt-call state.sls mysql
2. Comment everything starting wsrep* (wsrep_provider, wsrep_cluster, wsrep_sst)
3. service mysql start
4. run on each node mysql_secure_install and filling root password.

.. code-block:: bash

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

Set root password? [Y/n] y
New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
... Success!

By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them. This is intended only for testing, and to make the installation
go a bit smoother. You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] y
... Success!

Normally, root should only be allowed to connect from 'localhost'. This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] n
... skipping.

By default, MySQL comes with a database named 'test' that anyone can
access. This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y
- Dropping test database...
... Success!
- Removing privileges on test database...
... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
... Success!

Cleaning up...

5. service mysql stop
6. uncomment all wsrep* lines except first server, where leave only in my.cnf wsrep_cluster_address='gcomm://';
7. start first node
8. Start third node which is connected to first one
9. Start second node which is connected to third one
10. After starting cluster, it must be change cluster address at first starting node without restart database and change config my.cnf.

.. code-block:: bash

mysql> SET GLOBAL wsrep_cluster_address='gcomm://10.0.0.2';

Read more
=========

* https://github.com/CaptTofu/ansible-galera
* http://www.sebastien-han.fr/blog/2012/04/15/active-passive-failover-cluster-on-a-mysql-galera-cluster-with-haproxy-lsb-agent/
* http://opentodo.net/2012/12/mysql-multi-master-replication-with-galera/
* http://www.codership.com/wiki/doku.php
* Best one: - http://www.sebastien-han.fr/blog/2012/04/01/mysql-multi-master-replication-with-galera/

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[client]
host = localhost
user = debian-sys-maint
password = {{ pillar['mysql_config']['maintenance_password'] }}
socket = /var/run/mysqld/mysqld.sock

[mysql_upgrade]
host = localhost
user = debian-sys-maint
password = {{ pillar['mysql_config']['maintenance_password'] }}
socket = /var/run/mysqld/mysqld.sock
basedir = /usr

+ 189
- 0
galera/files/my.cnf Bestand weergeven

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# All files in this package is subject to the GPL v2 license
# More information is in the COPYING file in the top directory of this package.
# Copyright (C) 2011 severalnines.com
{%- if pillar.galera.master is defined %}
{%- from "galera/map.jinja" import master with context %}
{%- set service = master %}
{%- endif %}
{%- if pillar.galera.slave is defined %}
{%- from "galera/map.jinja" import slave with context %}
{%- set service = slave %}
{%- endif %}
[MYSQLD]
user=mysql
basedir=/usr/
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
pid_file=mysqld.pid
port=3306
log_error=/var/log/mysql.log
log_warnings=2
#log_output=FILE
### INNODB OPTIONS
innodb_buffer_pool_size=9211M
innodb_flush_log_at_trx_commit=2
innodb_file_per_table=1
innodb_data_file_path = ibdata1:100M:autoextend
## You may want to tune the below depending on number of cores and disk sub
innodb_read_io_threads=4
innodb_write_io_threads=4
innodb_io_capacity=200
innodb_doublewrite=1
innodb_log_file_size=1024M
innodb_log_buffer_size=96M
innodb_buffer_pool_instances=8
innodb_log_files_in_group=2
innodb_thread_concurrency=64
#innodb_file_format=barracuda
innodb_flush_method = O_DIRECT
innodb_autoinc_lock_mode=2
## avoid statistics update when doing e.g show tables
innodb_stats_on_metadata=0
default_storage_engine=innodb

bind-address={{ service.bind.address }}

# CHARACTER SET
#collation_server = utf8_unicode_ci
#init_connect='SET NAMES utf8'
character_set_server = utf8

# REPLICATION SPECIFIC
#server_id must be unique across all mysql servers participating in replication.
#server_id=SERVERID
binlog_format=ROW
#log_slave_updates=1
#log_bin=binlog
#relay_log=relay-bin
#expire_logs_days=7
#gtid_mode=ON
#enforce_gtid_consistency=1
# OTHER THINGS, BUFFERS ETC
key_buffer_size = 24M
tmp_table_size = 64M
max_heap_table_size = 64M
max_allowed_packet = 512M
#sort_buffer_size = 256K
#read_buffer_size = 256K
#read_rnd_buffer_size = 512K
#myisam_sort_buffer_size = 8M
skip_name_resolve
memlock=0
sysdate_is_now=1
max_connections=2000
thread_cache_size=512
query_cache_type = 0
query_cache_size = 0
table_open_cache=1024
lower_case_table_names=0
# 5.6 backwards compatibility
#explicit_defaults_for_timestamp=1
##
## WSREP options
##

# Full path to wsrep provider library or 'none'
wsrep_provider=/usr/lib/galera/libgalera_smm.so

wsrep_node_address={{ service.bind.address }}
# Provider specific configuration options
wsrep_provider_options="gcache.size=8192M"

# Logical cluster name. Should be the same for all nodes.
wsrep_cluster_name="my_wsrep_cluster"

# Group communication system handle
#wsrep_cluster_address=gcomm://10.0.0.3:4567,10.0.0.4:4567,10.0.0.2:4567
wsrep_cluster_address=gcomm://{% for member in service.members %}{{ member.host}}{% if not loop.last %},{% endif %}{% endfor %}

# Human_readable node name (non-unique). Hostname by default.
wsrep_node_name={{ service.bind.address }}

# Address for incoming client connections. Autodetect by default.
#wsrep_node_incoming_address=

# How many threads will process writesets from other nodes
wsrep_slave_threads=8

# DBUG options for wsrep provider
#wsrep_dbug_option

# Generate fake primary keys for non-PK tables (required for multi-master
# and parallel applying operation)
wsrep_certify_nonPK=1

# Location of the directory with data files. Needed for non-mysqldump
# state snapshot transfers. Defaults to mysql_real_data_home.
#wsrep_data_home_dir=

# Maximum number of rows in write set
wsrep_max_ws_rows=131072

# Maximum size of write set
wsrep_max_ws_size=1073741824

# to enable debug level logging, set this to 1
wsrep_debug=0

# convert locking sessions into transactions
wsrep_convert_LOCK_to_trx=0

# how many times to retry deadlocked autocommits
wsrep_retry_autocommit=1

# change auto_increment_increment and auto_increment_offset automatically
wsrep_auto_increment_control=1

# replicate myisam
wsrep_replicate_myisam=1
# retry autoinc insert, which failed for duplicate key error
wsrep_drupal_282555_workaround=0

# enable "strictly synchronous" semantics for read operations
wsrep_causal_reads=0

# Command to call when node status or cluster membership changes.
# Will be passed all or some of the following options:
# --status - new status of this node
# --uuid - UUID of the cluster
# --primary - whether the component is primary or not ("yes"/"no")
# --members - comma-separated list of members
# --index - index of this node in the list
#wsrep_notify_cmd=

##
## WSREP State Transfer options
##

# State Snapshot Transfer method
# ClusterControl currently DOES NOT support wsrep_sst_method=mysqldump
wsrep_sst_method=xtrabackup

# Address on THIS node to receive SST at. DON'T SET IT TO DONOR ADDRESS!!!
# (SST method dependent. Defaults to the first IP of the first interface)
#wsrep_sst_receive_address=

# SST authentication string. This will be used to send SST to joining nodes.
# Depends on SST method. For mysqldump method it is root:<root password>
wsrep_sst_auth={{ service.admin.user }}:{{ service.admin.password }}

# Desired SST donor name.
#wsrep_sst_donor=

# Protocol version to use
# wsrep_protocol_version=
[MYSQL]
socket=/var/run/mysqld/mysqld.sock
#default_character_set=utf8
[client]
socket=/var/run/mysqld/mysqld.sock
default_character_set=utf8
[mysqldump]
max_allowed_packet = 512M
socket=/var/run/mysqld/mysqld.sock
default_character_set=utf8
[MYSQLD_SAFE]
pid_file=mysqld.pid
log_error=/var/log/mysql.log
basedir=/usr/
datadir=/var/lib/mysql

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galera/files/my.cnf.bootstrap Bestand weergeven

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# All files in this package is subject to the GPL v2 license
# More information is in the COPYING file in the top directory of this package.
# Copyright (C) 2011 severalnines.com
{%- if pillar.galera.master is defined %}
{%- from "galera/map.jinja" import master with context %}
{%- set service = master %}
{%- endif %}
{%- if pillar.galera.slave is defined %}
{%- from "galera/map.jinja" import slave with context %}
{%- set service = slave %}
{%- endif %}
[MYSQLD]
user=mysql
basedir=/usr/
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
pid_file=mysqld.pid
port=3306
log_error=/var/log/mysql.log
log_warnings=2
#log_output=FILE
### INNODB OPTIONS
innodb_buffer_pool_size=9211M
innodb_flush_log_at_trx_commit=2
innodb_file_per_table=1
innodb_data_file_path = ibdata1:100M:autoextend
## You may want to tune the below depending on number of cores and disk sub
innodb_read_io_threads=4
innodb_write_io_threads=4
innodb_io_capacity=200
innodb_doublewrite=1
innodb_log_file_size=1024M
innodb_log_buffer_size=96M
innodb_buffer_pool_instances=8
innodb_log_files_in_group=2
innodb_thread_concurrency=64
#innodb_file_format=barracuda
innodb_flush_method = O_DIRECT
innodb_autoinc_lock_mode=2
## avoid statistics update when doing e.g show tables
innodb_stats_on_metadata=0
default_storage_engine=innodb

bind-address={{ service.bind.address }}

# CHARACTER SET
#collation_server = utf8_unicode_ci
#init_connect='SET NAMES utf8'
character_set_server = utf8

# REPLICATION SPECIFIC
#server_id must be unique across all mysql servers participating in replication.
#server_id=SERVERID
binlog_format=ROW
#log_slave_updates=1
#log_bin=binlog
#relay_log=relay-bin
#expire_logs_days=7
#gtid_mode=ON
#enforce_gtid_consistency=1
# OTHER THINGS, BUFFERS ETC
key_buffer_size = 24M
tmp_table_size = 64M
max_heap_table_size = 64M
max_allowed_packet = 512M
#sort_buffer_size = 256K
#read_buffer_size = 256K
#read_rnd_buffer_size = 512K
#myisam_sort_buffer_size = 8M
skip_name_resolve
memlock=0
sysdate_is_now=1
max_connections=2000
thread_cache_size=512
query_cache_type = 0
query_cache_size = 0
table_open_cache=1024
lower_case_table_names=0
# 5.6 backwards compatibility
#explicit_defaults_for_timestamp=1
#

# Desired SST donor name.
#wsrep_sst_donor=

# Protocol version to use
# wsrep_protocol_version=
[MYSQL]
socket=/var/run/mysqld/mysqld.sock
#default_character_set=utf8
[client]
socket=/var/run/mysqld/mysqld.sock
default_character_set=utf8
[mysqldump]
max_allowed_packet = 512M
socket=/var/run/mysqld/mysqld.sock
default_character_set=utf8
[MYSQLD_SAFE]
pid_file=mysqld.pid
log_error=/var/log/mysql.log
basedir=/usr/
datadir=/var/lib/mysql

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galera/files/my.cnf.init Bestand weergeven

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# All files in this package is subject to the GPL v2 license
# More information is in the COPYING file in the top directory of this package.
# Copyright (C) 2011 severalnines.com
{%- if pillar.galera.master is defined %}
{%- from "galera/map.jinja" import master with context %}
{%- set service = master %}
{%- endif %}
{%- if pillar.galera.slave is defined %}
{%- from "galera/map.jinja" import slave with context %}
{%- set service = slave %}
{%- endif %}
[MYSQLD]
user=mysql
basedir=/usr/
datadir=/var/lib/mysql
socket=/var/run/mysqld/mysqld.sock
pid_file=mysqld.pid
port=3306
log_error=/var/log/mysql.log
log_warnings=2
#log_output=FILE
### INNODB OPTIONS
innodb_buffer_pool_size=9211M
innodb_flush_log_at_trx_commit=2
innodb_file_per_table=1
innodb_data_file_path = ibdata1:100M:autoextend
## You may want to tune the below depending on number of cores and disk sub
innodb_read_io_threads=4
innodb_write_io_threads=4
innodb_io_capacity=200
innodb_doublewrite=1
innodb_log_file_size=1024M
innodb_log_buffer_size=96M
innodb_buffer_pool_instances=8
innodb_log_files_in_group=2
innodb_thread_concurrency=64
#innodb_file_format=barracuda
innodb_flush_method = O_DIRECT
innodb_autoinc_lock_mode=2
## avoid statistics update when doing e.g show tables
innodb_stats_on_metadata=0
default_storage_engine=innodb

bind-address={{ service.bind.address }}

# CHARACTER SET
#collation_server = utf8_unicode_ci
#init_connect='SET NAMES utf8'
character_set_server = utf8

# REPLICATION SPECIFIC
#server_id must be unique across all mysql servers participating in replication.
#server_id=SERVERID
binlog_format=ROW
#log_slave_updates=1
#log_bin=binlog
#relay_log=relay-bin
#expire_logs_days=7
#gtid_mode=ON
#enforce_gtid_consistency=1
# OTHER THINGS, BUFFERS ETC
key_buffer_size = 24M
tmp_table_size = 64M
max_heap_table_size = 64M
max_allowed_packet = 512M
#sort_buffer_size = 256K
#read_buffer_size = 256K
#read_rnd_buffer_size = 512K
#myisam_sort_buffer_size = 8M
skip_name_resolve
memlock=0
sysdate_is_now=1
max_connections=2000
thread_cache_size=512
query_cache_type = 0
query_cache_size = 0
table_open_cache=1024
lower_case_table_names=0
# 5.6 backwards compatibility
#explicit_defaults_for_timestamp=1
##
## WSREP options
##

# Full path to wsrep provider library or 'none'
wsrep_provider=/usr/lib/galera/libgalera_smm.so

wsrep_node_address={{ service.bind.address }}
# Provider specific configuration options
wsrep_provider_options="gcache.size=8192M"

# Logical cluster name. Should be the same for all nodes.
wsrep_cluster_name="my_wsrep_cluster"

# Group communication system handle
wsrep_cluster_address=gcomm://

# Human_readable node name (non-unique). Hostname by default.
wsrep_node_name={{ service.bind.address }}

# Address for incoming client connections. Autodetect by default.
#wsrep_node_incoming_address=

# How many threads will process writesets from other nodes
wsrep_slave_threads=8

# DBUG options for wsrep provider
#wsrep_dbug_option

# Generate fake primary keys for non-PK tables (required for multi-master
# and parallel applying operation)
wsrep_certify_nonPK=1

# Location of the directory with data files. Needed for non-mysqldump
# state snapshot transfers. Defaults to mysql_real_data_home.
#wsrep_data_home_dir=

# Maximum number of rows in write set
wsrep_max_ws_rows=131072

# Maximum size of write set
wsrep_max_ws_size=1073741824

# to enable debug level logging, set this to 1
wsrep_debug=0

# convert locking sessions into transactions
wsrep_convert_LOCK_to_trx=0

# how many times to retry deadlocked autocommits
wsrep_retry_autocommit=1

# change auto_increment_increment and auto_increment_offset automatically
wsrep_auto_increment_control=1

# replicate myisam
wsrep_replicate_myisam=1
# retry autoinc insert, which failed for duplicate key error
wsrep_drupal_282555_workaround=0

# enable "strictly synchronous" semantics for read operations
wsrep_causal_reads=0

# Command to call when node status or cluster membership changes.
# Will be passed all or some of the following options:
# --status - new status of this node
# --uuid - UUID of the cluster
# --primary - whether the component is primary or not ("yes"/"no")
# --members - comma-separated list of members
# --index - index of this node in the list
#wsrep_notify_cmd=

##
## WSREP State Transfer options
##

# State Snapshot Transfer method
# ClusterControl currently DOES NOT support wsrep_sst_method=mysqldump
wsrep_sst_method=xtrabackup

# Address on THIS node to receive SST at. DON'T SET IT TO DONOR ADDRESS!!!
# (SST method dependent. Defaults to the first IP of the first interface)
#wsrep_sst_receive_address=

# SST authentication string. This will be used to send SST to joining nodes.
# Depends on SST method. For mysqldump method it is root:<root password>
wsrep_sst_auth={{ service.admin.user }}:{{ service.admin.password }}

# Desired SST donor name.
#wsrep_sst_donor=

# Protocol version to use
# wsrep_protocol_version=
[MYSQL]
socket=/var/run/mysqld/mysqld.sock
#default_character_set=utf8
[client]
socket=/var/run/mysqld/mysqld.sock
default_character_set=utf8
[mysqldump]
max_allowed_packet = 512M
socket=/var/run/mysqld/mysqld.sock
default_character_set=utf8
[MYSQLD_SAFE]
pid_file=mysqld.pid
log_error=/var/log/mysql.log
basedir=/usr/
datadir=/var/lib/mysql

+ 10
- 0
galera/init.sls Bestand weergeven

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{%- if pillar.galera is defined %}
include:
{%- if pillar.galera.master is defined %}
- galera.master
{%- endif %}
{%- if pillar.galera.slave is defined %}
- galera.slave
{%- endif %}
{%- endif %}

+ 24
- 0
galera/map.jinja Bestand weergeven

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{%- set master = salt['grains.filter_by']({
'Debian': {
'pkgs': ['mysql-server-wsrep', 'galera', 'rsync', 'python-mysqldb', 'libmysqlclient18', 'psmisc', 'netcat', 'percona-xtrabackup-21', 'socat'],
'service': 'mysql',
'config': '/etc/mysql/conf.d/wsrep.cnf',
},
'RedHat': {
'pkgs': ['MySQL-server', 'galera', 'MySQL-client', 'MySQL-python', 'rsync'],
'service': 'mysql',
},
}, merge=salt['pillar.get']('galera:master')) %}

{%- set slave = salt['grains.filter_by']({
'Debian': {
'pkgs': ['mysql-server-wsrep', 'galera', 'rsync', 'python-mysqldb', 'libmysqlclient18', 'psmisc', 'netcat', 'percona-xtrabackup-21', 'socat'],
'service': 'mysql',
'config': '/etc/mysql/conf.d/wsrep.cnf',
},
'RedHat': {
'pkgs': ['MySQL-server', 'galera', 'MySQL-client', 'MySQL-python', 'rsync'],
'service': 'mysql',
},
}, merge=salt['pillar.get']('galera:slave')) %}

+ 88
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galera/master.sls Bestand weergeven

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{%- from "galera/map.jinja" import master with context %}
{%- if master.enabled %}

{%- if grains.os_family == "Debian2" %}

galera_debconf:
debconf.set:
- name: mariadb-galera-server
- data:
'mysql-server/root_password': {'type':'string','value':'{{ server.admin.password }}'}
'mysql-server/root_password_again': {'type':'string','value':'{{ server.admin.password }}'}
- require_in:
- pkg: galera_packages

{%- endif %}

galera_packages:
pkg.installed:
- names: {{ master.pkgs }}

galera_log_dir:
file.directory:
- name: /var/log/mysql
- makedirs: true
- mode: 755
- require:
- pkg: galera_packages

{%- if not salt['cmd.run']('test -e /root/.galera_bootstrap') %}

galera_bootstrap_temp_config:
file.managed:
- name: {{ master.config }}
- source: salt://mysql/files/my.cnf.bootstrap
- mode: 644
- template: jinja
- require:
- pkg: galera_packages

galera_bootstrap_start_service:
service.running:
- name: mysql
- require:
- file: galera_bootstrap_temp_config

galera_bootstrap_set_root_password:
cmd.run:
- name: mysqladmin password "{{ master.admin.password }}"
- require:
- service: galera_bootstrap_start_service

mysql_bootstrap_update_maint_password:
cmd.run:
- name: mysql -u root -p{{ master.admin.password }} -e "GRANT ALL PRIVILEGES ON *.* TO 'debian-sys-maint'@'localhost' IDENTIFIED BY '{{ master.maintenance_password }}';"
- require:
- cmd: galera_bootstrap_set_root_password

galera_packages_bootstrap_stop_service:
service.dead:
- name: mysql
- require:
- cmd: mysql_bootstrap_update_maint_password

galera_bootstrap_init_config:
file.managed:
- name: {{ master.config }}
- source: salt://mysql/conf/my.cnf
- mode: 644
- template: jinja
- require:
- service: galera_bootstrap_stop_service

galera_bootstrap_temp_config:
file.touch:
- require:
- file: galera_bootstrap_init_config
- watch_in:
- service: galera_service

{%- endif %}

galera_service:
service.running:
- name: {{ master.service }}
- enable: true
- reload: true

{%- endif %}

+ 0
- 0
galera/slave.sls Bestand weergeven


+ 19
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metadata/galera/service/master/cluster.yml Bestand weergeven

@@ -0,0 +1,19 @@
applications:
- galera
parameters:
_param:
galera_server_cluster_name: galeracluster
galera_server_bind_address: 0.0.0.0
galera_server_bind_port: 0.0.0.0
galera_server_admin_user: root
galera_server_admin_password: root
galera:
master:
enabled: true
name: ${_param:galera_server_cluster_name}
bind:
address: ${_param:galera_server_bind_address}
port: ${_param:galera_server_bind_port}
admin:
user: ${_param:galera_server_admin_user}
password: ${_param:galera_server_admin_password}

+ 19
- 0
metadata/galera/service/slave/cluster.yml Bestand weergeven

@@ -0,0 +1,19 @@
applications:
- galera
parameters:
_param:
galera_server_cluster_name: galeracluster
galera_server_bind_address: 0.0.0.0
galera_server_bind_port: 0.0.0.0
galera_server_admin_user: root
galera_server_admin_password: root
galera:
slave:
enabled: true
name: ${_param:galera_server_cluster_name}
bind:
address: ${_param:galera_server_bind_address}
port: ${_param:galera_server_bind_port}
admin:
user: ${_param:galera_server_admin_user}
password: ${_param:galera_server_admin_password}

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