This file is indexed.

/usr/bin/wsrep_sst_rsync is in percona-xtradb-cluster-server-5.5 5.5.34-25.9+dfsg-0ubuntu4.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
#!/bin/bash -ue

# Copyright (C) 2010 Codership Oy
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
# MA  02110-1301  USA.

# This is a reference script for rsync-based state snapshot tansfer

RSYNC_PID=
RSYNC_CONF=
OS=$(uname)
[ "$OS" == "Darwin" ] && export -n LD_LIBRARY_PATH

. $(dirname $0)/wsrep_sst_common

cleanup_joiner()
{
    wsrep_log_info "Joiner cleanup."
    local PID=$(cat "$RSYNC_PID" 2>/dev/null || echo 0)
    [ "0" != "$PID" ] && kill $PID && sleep 0.5 && kill -9 $PID >/dev/null 2>&1 \
    || :
    rm -rf "$RSYNC_CONF"
    rm -rf "$MAGIC_FILE"
    rm -rf "$RSYNC_PID"
    wsrep_log_info "Joiner cleanup done."
    if [ "${WSREP_SST_OPT_ROLE}" = "joiner" ];then
        wsrep_cleanup_progress_file
    fi
}

check_pid()
{
    local pid_file=$1
    [ -r "$pid_file" ] && ps -p $(cat $pid_file) >/dev/null 2>&1
}

check_pid_and_port()
{
    local pid_file=$1
    local rsync_pid=$(cat $pid_file)
    local rsync_port=$2

    if [ "$OS" == "Darwin" -o "$OS" == "FreeBSD" ]; then
        # no netstat --program(-p) option in Darwin and FreeBSD
        check_pid $pid_file && \
        lsof -i -Pn 2>/dev/null | \
        grep "(LISTEN)" | grep ":$rsync_port" | grep -w '^rsync[[:space:]]\+'"$rsync_pid" >/dev/null
    else
        check_pid $pid_file && \
        netstat -lnpt 2>/dev/null | \
        grep LISTEN | grep \:$rsync_port | grep $rsync_pid/rsync >/dev/null
    fi
}

MAGIC_FILE="$WSREP_SST_OPT_DATA/rsync_sst_complete"
rm -rf "$MAGIC_FILE"

SCRIPT_DIR=$(cd "$(dirname "$0")"; pwd -P)
WSREP_LOG_DIR=${WSREP_LOG_DIR:-$($SCRIPT_DIR/my_print_defaults --defaults-file "$WSREP_SST_OPT_CONF" mysqld server mysqld-5.5 \
	| grep -- '--innodb[-_]log[-_]group[-_]home[-_]dir=' | cut -b 29- )}
if [ -n "${WSREP_LOG_DIR:-""}" ]; then
    WSREP_LOG_DIR=$(cd $WSREP_SST_OPT_DATA; mkdir -p "$WSREP_LOG_DIR"; cd $WSREP_LOG_DIR; pwd -P)
else
    WSREP_LOG_DIR=$(cd $WSREP_SST_OPT_DATA; pwd -P)
fi

# Old filter - include everything except selected
# FILTER=(--exclude '*.err' --exclude '*.pid' --exclude '*.sock' \
#         --exclude '*.conf' --exclude core --exclude 'galera.*' \
#         --exclude grastate.txt --exclude '*.pem' \
#         --exclude '*.[0-9][0-9][0-9][0-9][0-9][0-9]' --exclude '*.index')

# New filter - exclude everything except dirs (schemas) and innodb files
FILTER=(-f '- /lost+found' -f '- /.fseventsd' -f '- /.Trashes'
        -f '+ /ib_lru_dump' -f '+ /ibdata*' -f '+ /*/' -f '- /*')

if [ "$WSREP_SST_OPT_ROLE" = "donor" ]
then

    if [ $WSREP_SST_OPT_BYPASS -eq 0 ]
    then

        FLUSHED="$WSREP_SST_OPT_DATA/tables_flushed"
        rm -rf "$FLUSHED"

        # Use deltaxfer only for WAN
        inv=$(basename $0)
        [ "$inv" = "wsrep_sst_rsync_wan" ] && WHOLE_FILE_OPT="" \
                                           || WHOLE_FILE_OPT="--whole-file"

        echo "flush tables"

        # wait for tables flushed and state ID written to the file
        while [ ! -r "$FLUSHED" ] && ! grep -q ':' "$FLUSHED" >/dev/null 2>&1
        do
            sleep 0.2
        done

        STATE="$(cat $FLUSHED)"
        rm -rf "$FLUSHED"

        sync

        # first, the normal directories, so that we can detect incompatible protocol
        RC=0
        rsync --owner --group --perms --links --specials \
              --ignore-times --inplace --dirs --delete --quiet \
              $WHOLE_FILE_OPT "${FILTER[@]}" "$WSREP_SST_OPT_DATA/" \
              rsync://$WSREP_SST_OPT_ADDR >&2 || RC=$?

        if [ "$RC" -ne 0 ]; then
            wsrep_log_error "rsync returned code $RC:"

            case $RC in
            12) RC=71  # EPROTO
                wsrep_log_error \
                "rsync server on the other end has incompatible protocol. " \
                "Make sure you have the same version of rsync on all nodes."
                ;;
            22) RC=12  # ENOMEM
                ;;
            *)  RC=255 # unknown error
                ;;
            esac
            exit $RC
        fi

        # second, we transfer InnoDB log files
        rsync --owner --group --perms --links --specials \
              --ignore-times --inplace --dirs --delete --quiet \
              $WHOLE_FILE_OPT -f '+ /ib_logfile[0-9]*' -f '- **' "$WSREP_LOG_DIR/" \
              rsync://$WSREP_SST_OPT_ADDR-log_dir >&2 || RC=$?

        if [ $RC -ne 0 ]; then
            wsrep_log_error "rsync innodb_log_group_home_dir returned code $RC:"
            exit 255 # unknown error
        fi

        # then, we parallelize the transfer of database directories, use . so that pathconcatenation works
        pushd "$WSREP_SST_OPT_DATA" >/dev/null

        count=1
        [ "$OS" == "Linux" ] && count=$(grep -c processor /proc/cpuinfo)
        [ "$OS" == "Darwin" -o "$OS" == "FreeBSD" ] && count=$(sysctl -n hw.ncpu)

        find . -maxdepth 1 -mindepth 1 -type d -print0 | xargs -I{} -0 -P $count \
             rsync --owner --group --perms --links --specials \
             --ignore-times --inplace --recursive --delete --quiet \
	     $WHOLE_FILE_OPT --exclude '*/ib_logfile*' "$WSREP_SST_OPT_DATA"/{}/ \
             rsync://$WSREP_SST_OPT_ADDR/{} >&2 || RC=$?

        popd >/dev/null

        if [ $RC -ne 0 ]; then
            wsrep_log_error "find/rsync returned code $RC:"
            exit 255 # unknown error
        fi

    else # BYPASS
        wsrep_log_info "Bypassing state dump."
        STATE="$WSREP_SST_OPT_GTID"
    fi

    echo "continue" # now server can resume updating data

    echo "$STATE" > "$MAGIC_FILE"
    rsync --archive --quiet --checksum "$MAGIC_FILE" rsync://$WSREP_SST_OPT_ADDR

    echo "done $STATE"

elif [ "$WSREP_SST_OPT_ROLE" = "joiner" ]
then
    [[ -n $SST_PROGRESS_FILE ]] && touch $SST_PROGRESS_FILE
    MYSQLD_PID=$WSREP_SST_OPT_PARENT

    MODULE="rsync_sst"

    RSYNC_PID="$WSREP_SST_OPT_DATA/$MODULE.pid"

    if check_pid $RSYNC_PID
    then
        wsrep_log_error "rsync daemon already running."
        exit 114 # EALREADY
    fi
    rm -rf "$RSYNC_PID"

    ADDR=$WSREP_SST_OPT_ADDR
    RSYNC_PORT=$(echo $ADDR | awk -F ':' '{ print $2 }')
    if [ -z "$RSYNC_PORT" ]
    then
        RSYNC_PORT=4444
        ADDR="$(echo $ADDR | awk -F ':' '{ print $1 }'):$RSYNC_PORT"
    fi

    trap "exit 32" HUP PIPE
    trap "exit 3"  INT TERM ABRT
    trap cleanup_joiner EXIT

    MYUID=$(id -u)
    MYGID=$(id -g)
    RSYNC_CONF="$WSREP_SST_OPT_DATA/$MODULE.conf"

cat << EOF > "$RSYNC_CONF"
pid file = $RSYNC_PID
use chroot = no
read only = no
timeout = 300
uid = $MYUID
gid = $MYGID
[$MODULE]
    path = $WSREP_SST_OPT_DATA
[$MODULE-log_dir]
    path = $WSREP_LOG_DIR
EOF

#    rm -rf "$DATA"/ib_logfile* # we don't want old logs around

    # listen at all interfaces (for firewalled setups)
    rsync --daemon --port $RSYNC_PORT --config "$RSYNC_CONF"

    until check_pid_and_port $RSYNC_PID $RSYNC_PORT
    do
        sleep 0.2
    done

    echo "ready $ADDR/$MODULE"

    # wait for SST to complete by monitoring magic file
    while [ ! -r "$MAGIC_FILE" ] && check_pid "$RSYNC_PID" && \
          ps -p $MYSQLD_PID >/dev/null
    do
        sleep 1
    done

    if ! ps -p $MYSQLD_PID >/dev/null
    then
        wsrep_log_error \
        "Parent mysqld process (PID:$MYSQLD_PID) terminated unexpectedly."
        exit 32
    fi

    if [ -r "$MAGIC_FILE" ]
    then
        cat "$MAGIC_FILE" # output UUID:seqno
    else
        # this message should cause joiner to abort
        echo "rsync process ended without creating '$MAGIC_FILE'"
    fi
    wsrep_cleanup_progress_file
#    cleanup_joiner
else
    wsrep_log_error "Unrecognized role: '$WSREP_SST_OPT_ROLE'"
    exit 22 # EINVAL
fi

exit 0