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Add receipes for mariadb cluster deployment

After removal of the percona cluster receipes, add support for deploying
a galera-based mariadb cluster instead.

Change-Id: I7e4d0fc804be242302d2e7b7202159d4b7ba8c97
changes/19/529819/5
Jens Harbott 4 years ago
committed by Jens Harbott (frickler)
parent
commit
3731993f6a
4 changed files with 193 additions and 0 deletions
  1. +106
    -0
      files/default/clustercheck
  2. +2
    -0
      metadata.rb
  3. +19
    -0
      recipes/mariadb-cluster-client.rb
  4. +66
    -0
      recipes/mariadb-cluster-server.rb

+ 106
- 0
files/default/clustercheck View File

@ -0,0 +1,106 @@
#!/bin/bash
#
# Script to make a proxy (ie HAProxy) capable of monitoring MariaDB Cluster nodes properly
#
# Author: Olaf van Zandwijk <olaf.vanzandwijk@nedap.com>
# Author: Raghavendra Prabhu <raghavendra.prabhu@percona.com>
#
# Documentation and download: https://github.com/olafz/percona-clustercheck
#
# Based on the original script from Unai Rodriguez
#
# Updated for MariaDB by: Jens Harbott <j.harbott@x-ion.de>
#
if [[ $1 == '-h' || $1 == '--help' ]];then
echo "Usage: $0 <user> <pass> <available_when_donor=0|1> <log_file> <available_when_readonly=0|1> <defaults_extra_file>"
exit
fi
# if the disabled file is present, return 503. This allows
# admins to manually remove a node from a cluster easily.
if [ -e "/var/tmp/clustercheck.disabled" ]; then
# Shell return-code is 1
echo -en "HTTP/1.1 503 Service Unavailable\r\n"
echo -en "Content-Type: text/plain\r\n"
echo -en "Connection: close\r\n"
echo -en "Content-Length: 51\r\n"
echo -en "\r\n"
echo -en "MariaDB Cluster Node is manually disabled.\r\n"
sleep 0.1
exit 1
fi
MYSQL_USERNAME="${1-clustercheckuser}"
MYSQL_PASSWORD="${2-clustercheckpassword!}"
AVAILABLE_WHEN_DONOR=${3:-0}
ERR_FILE="${4:-/dev/null}"
AVAILABLE_WHEN_READONLY=${5:-1}
DEFAULTS_EXTRA_FILE=${6:-/etc/my.cnf}
#Timeout exists for instances where mysqld may be hung
TIMEOUT=10
EXTRA_ARGS=""
if [[ -n "$MYSQL_USERNAME" ]]; then
EXTRA_ARGS="$EXTRA_ARGS --user=${MYSQL_USERNAME}"
fi
if [[ -n "$MYSQL_PASSWORD" ]]; then
EXTRA_ARGS="$EXTRA_ARGS --password=${MYSQL_PASSWORD}"
fi
if [[ -r $DEFAULTS_EXTRA_FILE ]];then
MYSQL_CMDLINE="mysql --defaults-extra-file=$DEFAULTS_EXTRA_FILE -nNE --connect-timeout=$TIMEOUT \
${EXTRA_ARGS}"
else
MYSQL_CMDLINE="mysql -nNE --connect-timeout=$TIMEOUT ${EXTRA_ARGS}"
fi
#
# Perform the query to check the wsrep_local_state
#
WSREP_STATUS=$($MYSQL_CMDLINE -e "SHOW STATUS LIKE 'wsrep_local_state';" \
2>${ERR_FILE} | tail -1 2>>${ERR_FILE})
if [[ "${WSREP_STATUS}" == "4" ]] || [[ "${WSREP_STATUS}" == "2" && ${AVAILABLE_WHEN_DONOR} == 1 ]]
then
# Check only when set to 0 to avoid latency in response.
if [[ $AVAILABLE_WHEN_READONLY -eq 0 ]];then
READ_ONLY=$($MYSQL_CMDLINE -e "SHOW GLOBAL VARIABLES LIKE 'read_only';" \
2>${ERR_FILE} | tail -1 2>>${ERR_FILE})
if [[ "${READ_ONLY}" == "ON" ]];then
# MariaDB Cluster node local state is 'Synced', but it is in
# read-only mode. The variable AVAILABLE_WHEN_READONLY is set to 0.
# => return HTTP 503
# Shell return-code is 1
echo -en "HTTP/1.1 503 Service Unavailable\r\n"
echo -en "Content-Type: text/plain\r\n"
echo -en "Connection: close\r\n"
echo -en "Content-Length: 43\r\n"
echo -en "\r\n"
echo -en "MariaDB Cluster Node is read-only.\r\n"
sleep 0.1
exit 1
fi
fi
# MariaDB Cluster node local state is 'Synced' => return HTTP 200
# Shell return-code is 0
echo -en "HTTP/1.1 200 OK\r\n"
echo -en "Content-Type: text/plain\r\n"
echo -en "Connection: close\r\n"
echo -en "Content-Length: 40\r\n"
echo -en "\r\n"
echo -en "MariaDB Cluster Node is synced.\r\n"
sleep 0.1
exit 0
else
# MariaDB Cluster node local state is not 'Synced' => return HTTP 503
# Shell return-code is 1
echo -en "HTTP/1.1 503 Service Unavailable\r\n"
echo -en "Content-Type: text/plain\r\n"
echo -en "Connection: close\r\n"
echo -en "Content-Length: 44\r\n"
echo -en "\r\n"
echo -en "MariaDB Cluster Node is not synced.\r\n"
sleep 0.1
exit 1
fi

+ 2
- 0
metadata.rb View File

@ -11,6 +11,8 @@ recipe 'mysql-client', 'Installs MySQL client packages.'
recipe 'mysql-server', 'Installs and configures MySQL server packages.'
recipe 'mariadb-client', 'Installs MariaDB client packages.'
recipe 'mariadb-server', 'Installs and configures MariaDB server packages.'
recipe 'mariadb-cluster-client', 'Installs MariaDB Cluster client packages.'
recipe 'mariadb-cluster-server', 'Installs and configures MariaDB Cluster server packages.'
recipe 'openstack-db', 'Creates necessary tables, users, and grants for OpenStack.'
%w(ubuntu redhat centos).each do |os|


+ 19
- 0
recipes/mariadb-cluster-client.rb View File

@ -0,0 +1,19 @@
# encoding: UTF-8
#
# Cookbook Name:: openstack-ops-database
# Recipe:: mariadb-cluster-client
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
include_recipe 'openstack-ops-database::mariadb-client'

+ 66
- 0
recipes/mariadb-cluster-server.rb View File

@ -0,0 +1,66 @@
# encoding: UTF-8
#
# Cookbook Name:: openstack-ops-database
# Recipe:: mariadb-cluster-server
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
class ::Chef::Recipe
include ::Openstack
end
## INFO: to use this recipe, set node['openstack']['db']['service_type'] = 'mariadb-cluster' in your environment
bind_db = node['openstack']['bind_service']['db']
if bind_db['interface']
listen_address = address_for bind_db['interface']
node.normal['mariadb']['galera']['options']['port'] = bind_db['port']
else
listen_address = bind_db['host']
node.normal['mariadb']['galera']['options']['port'] = node['openstack']['endpoints']['db']['port']
end
node.normal['mariadb']['galera']['options']['bind-address'] = listen_address
## CLUSTER SPECIFIC CONFIG
node.normal['mariadb']['galera']['cluster_name'] = 'openstack'
node.normal['mariadb']['galera']['wsrep_provider_options']['gmcast.listen_addr'] = "tcp://#{listen_address}:4567"
### find all nodes in the mariadb cluster
cluster_nodes = search(:node, 'recipes:"openstack-ops-database\:\:mariadb-cluster-server"').sort
# if it's the first node make sure that wsrep_cluster_address is set to nothing to be able to bootstrap.
is_first_node = cluster_nodes.empty? || (cluster_nodes.size == 1 && cluster_nodes.first['fqdn'] == node['fqdn'])
if is_first_node
node.normal['mariadb']['galera']['gcomm_address'] = 'gcomm://'
else
# otherwise set the correct cluster address with all cluster nodes
family = node['openstack']['endpoints']['family']
cluster_nodes_addresses = []
cluster_nodes.each do |cluster_node|
address = address_for bind_db['interface'], family, cluster_node
cluster_nodes_addresses << address
end
cluster_address = cluster_nodes_addresses.join(',')
node.normal['mariadb']['galera']['gcomm_address'] = "gcomm://#{cluster_address}"
end
include_recipe 'openstack-ops-database::mariadb-client'
include_recipe 'mariadb::galera'
# Install clustercheck tool
cookbook_file '/usr/bin/clustercheck' do
source 'clustercheck'
owner 'root'
group 'root'
mode '0755'
action :create_if_missing
end

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