remerging wsrep files from lp:codership-mysql

2 files changed, 231 insertions, 0 deletions

diff --git a/support-files/wsrep.cnf.sh b/support-files/wsrep.cnf.sh
new file mode 100644
index 00000000000..507f83324b9
--- /dev/null
+++ b/support-files/wsrep.cnf.sh
@@ -0,0 +1,129 @@
+# This file contains wsrep-related mysqld options. It should be included
+# in the main MySQL configuration file.
+#
+# Options that need to be customized:
+#  - wsrep_provider
+#  - wsrep_cluster_address
+#  - wsrep_sst_auth
+# The rest of defaults should work out of the box.
+
+##
+## mysqld options _MANDATORY_ for correct opration of the cluster
+##
+[mysqld]
+
+# (This must be substituted by wsrep_format)
+binlog_format=ROW
+
+# Currently only InnoDB storage engine is supported
+default-storage-engine=innodb
+
+# to avoid issues with 'bulk mode inserts' using autoinc
+innodb_autoinc_lock_mode=2
+
+# This is a must for paralell applying
+innodb_locks_unsafe_for_binlog=1
+
+# Query Cache is not supported with wsrep
+query_cache_size=0
+query_cache_type=0
+
+# Override bind-address
+# In some systems bind-address defaults to 127.0.0.1, and with mysqldump SST
+# it will have (most likely) disastrous consequences on donor node
+bind-address=0.0.0.0
+
+##
+## WSREP options
+##
+
+# Full path to wsrep provider library or 'none'
+wsrep_provider=none
+
+# Provider specific configuration options
+#wsrep_provider_options=
+
+# Logical cluster name. Should be the same for all nodes.
+wsrep_cluster_name="my_wsrep_cluster"
+
+# Group communication system handle
+#wsrep_cluster_address="dummy://"
+
+# Human-readable node name (non-unique). Hostname by default.
+#wsrep_node_name=
+
+# Base replication <address|hostname>[:port] of the node.
+# The values supplied will be used as defaults for state transfer receiving,
+# listening ports and so on. Default: address of the first network interface.
+#wsrep_node_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=1
+
+# 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
+
+# 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
+
+# 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
+wsrep_sst_method=mysqldump
+
+# Address which donor should send State Snapshot to.
+# Should be the address of THIS node. 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=root:
+
+# Desired SST donor name.
+#wsrep_sst_donor=
+
+# Reject client queries when donating SST (false)
+#wsrep_sst_donor_rejects_queries=0
+
+# Protocol version to use
+# wsrep_protocol_version=
diff --git a/support-files/wsrep_notify.sh b/support-files/wsrep_notify.sh
new file mode 100644
index 00000000000..bdbe3d12a39
--- /dev/null
+++ b/support-files/wsrep_notify.sh
@@ -0,0 +1,102 @@
+#!/bin/sh -eu
+
+# This is a simple example of wsrep notification script (wsrep_notify_cmd).
+# It will create 'wsrep' schema and two tables in it: 'membeship' and 'status'
+# and fill them on every membership or node status change.
+#
+# Edit parameters below to specify the address and login to server.
+
+USER=root
+PSWD=rootpass
+HOST=127.0.0.1
+PORT=3306
+
+SCHEMA="wsrep"
+MEMB_TABLE="$SCHEMA.membership"
+STATUS_TABLE="$SCHEMA.status"
+
+BEGIN="
+SET wsrep_on=0;
+DROP SCHEMA IF EXISTS $SCHEMA; CREATE SCHEMA $SCHEMA;
+CREATE TABLE $MEMB_TABLE (
+    idx  INT UNIQUE PRIMARY KEY,
+    uuid CHAR(40) UNIQUE, /* node UUID */
+    name VARCHAR(32),     /* node name */
+    addr VARCHAR(256)     /* node address */
+) ENGINE=MEMORY;
+CREATE TABLE $STATUS_TABLE (
+    size   INT,      /* component size   */
+    idx    INT,      /* this node index  */
+    status CHAR(16), /* this node status */
+    uuid   CHAR(40), /* cluster UUID */
+    prim   BOOLEAN   /* if component is primary */
+) ENGINE=MEMORY;
+BEGIN;
+DELETE FROM $MEMB_TABLE;
+DELETE FROM $STATUS_TABLE;
+"
+END="COMMIT;"
+
+configuration_change()
+{
+    echo "$BEGIN;"
+
+    local idx=0
+
+    for NODE in $(echo $MEMBERS | sed s/,/\ /g)
+    do
+        echo "INSERT INTO $MEMB_TABLE VALUES ( $idx, "
+        # Don't forget to properly quote string values
+        echo "'$NODE'" | sed  s/\\//\',\'/g
+        echo ");"
+        idx=$(( $idx + 1 ))
+    done
+
+    echo "INSERT INTO $STATUS_TABLE VALUES($idx, $INDEX, '$STATUS', '$CLUSTER_UUID', $PRIMARY);"
+
+    echo "$END"
+}
+
+status_update()
+{
+    echo "SET wsrep_on=0; BEGIN; UPDATE $STATUS_TABLE SET status='$STATUS'; COMMIT;"
+}
+
+COM=status_update # not a configuration change by default
+
+while [ $# -gt 0 ]
+do
+    case $1 in
+    --status)
+        STATUS=$2
+        shift
+        ;;
+    --uuid)
+        CLUSTER_UUID=$2
+        shift
+        ;;
+    --primary)
+        [ "$2" = "yes" ] && PRIMARY="1" || PRIMARY="0"
+        COM=configuration_change
+        shift
+        ;;
+    --index)
+        INDEX=$2
+        shift
+        ;;
+    --members)
+        MEMBERS=$2
+        shift
+        ;;
+    esac
+    shift
+done
+
+# Undefined means node is shutting down
+if [ "$STATUS" != "Undefined" ]
+then
+    $COM | mysql -B -u$USER -p$PSWD -h$HOST -P$PORT
+fi
+
+exit 0
+#