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Edit File : wsrep_notify \| Size : 4.86 KB
#!/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' # # If these parameters are not set, then the values # passed by the server are taken: # HOST="127.0.0.1" PORT=3306 # # Edit parameters below to specify SSL parameters: # ssl_cert="" ssl_key="" ssl_ca="" ssl_capath="" ssl_cipher="" ssl_crl="" ssl_crlpath="" ssl_verify_server_cert=0 # # Client executable path: # CLIENT="mysql" # # Name of schema and tables: # SCHEMA="wsrep" MEMB_TABLE="$SCHEMA.membership" STATUS_TABLE="$SCHEMA.status" WSREP_ON='SET wsrep_on=ON' WSREP_OFF='SET wsrep_on=OFF' BEGIN="CREATE SCHEMA IF NOT EXISTS $SCHEMA; CREATE TABLE IF NOT EXISTS $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 IF NOT EXISTS $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" END="COMMIT; $WSREP_ON" configuration_change() { echo "$WSREP_OFF; DROP SCHEMA IF EXISTS $SCHEMA; $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 "$WSREP_OFF; $BEGIN; UPDATE $STATUS_TABLE SET status='$STATUS'; $END;" } trim_string() { if [ -n "${BASH_VERSION:-}" ]; then local pattern="[![:space:]${2:-}]" local x="${1#$pattern}" local z=${#1} x=${#x} if [ $x -ne $z ]; then local y="${1%$pattern}" y=${#y} x=$(( z-x-1 )) y=$(( y-x+1 )) printf '%s' "${1:$x:$y}" else printf '' fi else local pattern="[[:space:]${2:-}]" echo "$1" \| sed -E "s/^$pattern+\|$pattern+\$//g" fi } COM='status_update' # not a configuration change by default STATUS="" CLUSTER_UUID="" PRIMARY=0 INDEX="" MEMBERS="" while [ $# -gt 0 ]; do case $1 in '--status') STATUS=$(trim_string "$2") shift ;; '--uuid') CLUSTER_UUID=$(trim_string "$2") shift ;; '--primary') arg=$(trim_string "$2") [ "$arg" = 'yes' ] && PRIMARY=1 \|\| PRIMARY=0 COM='configuration_change' shift ;; '--index') INDEX=$(trim_string "$2") shift ;; '--members') MEMBERS=$(trim_string "$2") shift ;; esac shift done USER=$(trim_string "$USER") PSWD=$(trim_string "$PSWD") HOST=$(trim_string "$HOST") PORT=$(trim_string "$PORT") case "$HOST" in \[) HOST="${HOST##\[}" HOST=$(trim_string "${HOST%%\]}") ;; esac if [ -z "$HOST" ]; then HOST="${NOTIFY_HOST:-}" fi if [ -z "$PORT" ]; then PORT="${NOTIFY_PORT:-}" fi ssl_key=$(trim_string "$ssl_key"); ssl_cert=$(trim_string "$ssl_cert"); ssl_ca=$(trim_string "$ssl_ca"); ssl_capath=$(trim_string "$ssl_capath"); ssl_cipher=$(trim_string "$ssl_cipher"); ssl_crl=$(trim_string "$ssl_crl"); ssl_crlpath=$(trim_string "$ssl_crlpath"); ssl_verify_server_cert=$(trim_string "$ssl_verify_server_cert"); SSL_PARAM="" if [ -n "$ssl_key$ssl_cert$ssl_ca$ssl_capath$ssl_cipher$ssl_crl$ssl_crlpath" ] then SSL_PARAM=' --ssl' [ -n "$ssl_key" ] && SSL_PARAM="$SSL_PARAM --ssl-key='$ssl_key'" [ -n "$ssl_cert" ] && SSL_PARAM="$SSL_PARAM --ssl-cert='$ssl_cert'" [ -n "$ssl_ca" ] && SSL_PARAM="$SSL_PARAM --ssl-ca='$ssl_ca'" [ -n "$ssl_capath" ] && SSL_PARAM="$SSL_PARAM --ssl-capath='$ssl_capath'" [ -n "$ssl_cipher" ] && SSL_PARAM="$SSL_PARAM --ssl-cipher='$ssl_cipher'" [ -n "$ssl_crl" ] && SSL_PARAM="$SSL_PARAM --ssl-crl='$ssl_crl'" [ -n "$ssl_crlpath" ] && SSL_PARAM="$SSL_PARAM --ssl-crlpath='$ssl_crlpath'" if [ -n "$ssl_verify_server_cert" ]; then if [ "$ssl_verify_server_cert" != "0" -o \ "$ssl_verify_server_cert" = "on" ] then SSL_PARAM="$SSL_PARAM --ssl-verify-server-cert" fi fi fi case "$STATUS" in 'joined' \| 'donor' \| 'synced') "$COM" \| eval "$CLIENT" -B "-u'$USER'"${PSWD:+" -p'$PSWD'"}\ "-h'$HOST'" "-P$PORT"$SSL_PARAM ;; *) # The node might be shutting down or not initialized ;; esac exit 0 Back

Edit File : wsrep_notify | Size : 4.86 KB

#!/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'
#
# If these parameters are not set, then the values
# passed by the server are taken:
#
HOST="127.0.0.1"
PORT=3306
#
# Edit parameters below to specify SSL parameters:
#
ssl_cert=""
ssl_key=""
ssl_ca=""
ssl_capath=""
ssl_cipher=""
ssl_crl=""
ssl_crlpath=""
ssl_verify_server_cert=0
#
# Client executable path:
#
CLIENT="mysql"
#
# Name of schema and tables:
#
SCHEMA="wsrep"
MEMB_TABLE="$SCHEMA.membership"
STATUS_TABLE="$SCHEMA.status"

WSREP_ON='SET wsrep_on=ON'
WSREP_OFF='SET wsrep_on=OFF'

BEGIN="CREATE SCHEMA IF NOT EXISTS $SCHEMA;
CREATE TABLE IF NOT EXISTS $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 IF NOT EXISTS $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"
END="COMMIT; $WSREP_ON"

configuration_change()
{
    echo "$WSREP_OFF; DROP SCHEMA IF EXISTS $SCHEMA; $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 "$WSREP_OFF; $BEGIN; UPDATE $STATUS_TABLE SET status='$STATUS'; $END;"
}

trim_string()
{
    if [ -n "${BASH_VERSION:-}" ]; then
        local pattern="[![:space:]${2:-}]"
        local x="${1#*$pattern}"
        local z=${#1}
        x=${#x}
        if [ $x -ne $z ]; then
            local y="${1%$pattern*}"
            y=${#y}
            x=$(( z-x-1 ))
            y=$(( y-x+1 ))
            printf '%s' "${1:$x:$y}"
        else
            printf ''
        fi
    else
        local pattern="[[:space:]${2:-}]"
        echo "$1" | sed -E "s/^$pattern+|$pattern+\$//g"
    fi
}

COM='status_update' # not a configuration change by default

STATUS=""
CLUSTER_UUID=""
PRIMARY=0
INDEX=""
MEMBERS=""

while [ $# -gt 0 ]; do
    case $1 in
    '--status')
        STATUS=$(trim_string "$2")
        shift
        ;;
    '--uuid')
        CLUSTER_UUID=$(trim_string "$2")
        shift
        ;;
    '--primary')
        arg=$(trim_string "$2")
        [ "$arg" = 'yes' ] && PRIMARY=1 || PRIMARY=0
        COM='configuration_change'
        shift
        ;;
    '--index')
        INDEX=$(trim_string "$2")
        shift
        ;;
    '--members')
        MEMBERS=$(trim_string "$2")
        shift
        ;;
    esac
    shift
done

USER=$(trim_string "$USER")
PSWD=$(trim_string "$PSWD")

HOST=$(trim_string "$HOST")
PORT=$(trim_string "$PORT")

case "$HOST" in
\[*)
    HOST="${HOST##\[}"
    HOST=$(trim_string "${HOST%%\]}")
    ;;
esac

if [ -z "$HOST" ]; then
    HOST="${NOTIFY_HOST:-}"
fi
if [ -z "$PORT" ]; then
    PORT="${NOTIFY_PORT:-}"
fi

ssl_key=$(trim_string "$ssl_key");
ssl_cert=$(trim_string "$ssl_cert");
ssl_ca=$(trim_string "$ssl_ca");
ssl_capath=$(trim_string "$ssl_capath");
ssl_cipher=$(trim_string "$ssl_cipher");
ssl_crl=$(trim_string "$ssl_crl");
ssl_crlpath=$(trim_string "$ssl_crlpath");
ssl_verify_server_cert=$(trim_string "$ssl_verify_server_cert");

SSL_PARAM=""

if [ -n "$ssl_key$ssl_cert$ssl_ca$ssl_capath$ssl_cipher$ssl_crl$ssl_crlpath" ]
then
    SSL_PARAM=' --ssl'
    [ -n "$ssl_key" ]     && SSL_PARAM="$SSL_PARAM --ssl-key='$ssl_key'"
    [ -n "$ssl_cert" ]    && SSL_PARAM="$SSL_PARAM --ssl-cert='$ssl_cert'"
    [ -n "$ssl_ca" ]      && SSL_PARAM="$SSL_PARAM --ssl-ca='$ssl_ca'"
    [ -n "$ssl_capath" ]  && SSL_PARAM="$SSL_PARAM --ssl-capath='$ssl_capath'"
    [ -n "$ssl_cipher" ]  && SSL_PARAM="$SSL_PARAM --ssl-cipher='$ssl_cipher'"
    [ -n "$ssl_crl" ]     && SSL_PARAM="$SSL_PARAM --ssl-crl='$ssl_crl'"
    [ -n "$ssl_crlpath" ] && SSL_PARAM="$SSL_PARAM --ssl-crlpath='$ssl_crlpath'"
    if [ -n "$ssl_verify_server_cert" ]; then
        if [ "$ssl_verify_server_cert" != "0" -o \
             "$ssl_verify_server_cert" = "on" ]
        then
            SSL_PARAM="$SSL_PARAM --ssl-verify-server-cert"
        fi
    fi
fi

case "$STATUS" in
    'joined' | 'donor' | 'synced')
        "$COM" | eval "$CLIENT" -B "-u'$USER'"${PSWD:+" -p'$PSWD'"}\
                      "-h'$HOST'" "-P$PORT"$SSL_PARAM
        ;;
    *)
        # The node might be shutting down or not initialized
        ;;
esac

exit 0

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