After removal of the percona cluster receipes, add support for deploying a galera-based mariadb cluster instead. Change-Id: I7e4d0fc804be242302d2e7b7202159d4b7ba8c97changes/19/529819/5
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#!/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 |
@ -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' |
@ -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 |