Merge pull request #549 from grooverdan/10.0-galera-sst-default-options

MDEV-15044 - sst use of mysqld --default* options, sst script enhancements, mtr tests

mysql-test/suite/galera_3nodes/galera_3nodes.cnf

@@ -12,6 +12,9 @@ wsrep-causal-reads=ON
 wsrep-sync-wait=15
 
 [mysqld.1]
+#galera_port=@OPT.port
+#ist_port=@OPT.port
+#sst_port=@OPT.port
 wsrep-cluster-address='gcomm://'
 wsrep_provider_options='base_port=@mysqld.1.#galera_port;evs.suspect_timeout=PT10S;evs.inactive_timeout=PT30S;evs.install_timeout=PT15S'
 

mysql-test/suite/galera_3nodes/include/have_ipv6.inc

+# Check if ipv6 is available.
+#
+--disable_query_log
+--disable_result_log
+connect (checkcon123456789,::1,root,,test);
+if($mysql_errno)
+{
+    skip No IPv6 support;
+}
+connection default;
+disconnect checkcon123456789;
+--enable_result_log
+--enable_query_log
+# end check
+

mysql-test/suite/galera_3nodes/t/galera_innobackupex_backup.test

@@ -16,7 +16,7 @@ SELECT COUNT(*) = 10 FROM t1;
 --exec innobackupex --defaults-file=$MYSQLTEST_VARDIR/my.cnf --defaults-group=mysqld.2 $MYSQL_TMP_DIR/innobackupex_backup --galera-info --port=$NODE_MYPORT_2 --host=127.0.0.1 --no-timestamp > $MYSQL_TMP_DIR/innobackupex-backup.log
 --exec innobackupex --defaults-file=$MYSQLTEST_VARDIR/my.cnf --defaults-group=mysqld.2 $MYSQL_TMP_DIR/innobackupex_backup --apply-log --galera-info --port=$NODE_MYPORT_2 --host=127.0.0.1 --no-timestamp > $MYSQL_TMP_DIR/innobackupex-apply.log
 
---source include/kill_galera.inc
+--source ../galera/include/kill_galera.inc
 --sleep 1
 
 --connection node_1

mysql-test/suite/galera_3nodes/t/galera_safe_to_bootstrap.test

@@ -109,7 +109,7 @@ SET SESSION wsrep_on = OFF;
 --let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
 --source include/wait_condition.inc
 
---source include/kill_galera.inc
+--source ../galera/include/kill_galera.inc
 
 #
 # Only node #1 should have safe_to_bootstrap: 1

mysys/my_default.c

@@ -88,15 +88,6 @@ static char my_defaults_extra_file_buffer[FN_REFLEN];
 
 static my_bool defaults_already_read= FALSE;
 
-#ifdef WITH_WSREP
-/*
-  The only purpose of this global array is to hold full name of my.cnf
-  which seems to be otherwise unavailable.
-*/
-char wsrep_defaults_file[FN_REFLEN + 10]= {0,};
-char wsrep_defaults_group_suffix[FN_EXTLEN]= {0,};
-#endif /* WITH_WSREP */
-
 /* Which directories are searched for options (and in which order) */
 
 #define MAX_DEFAULT_DIRS 7
@@ -442,16 +433,6 @@ int get_defaults_options(int argc, char **argv,
     if (!*group_suffix && is_prefix(*argv, "--defaults-group-suffix="))
     {
       *group_suffix= *argv + sizeof("--defaults-group-suffix=")-1;
-
-#ifdef WITH_WSREP
-      /* make sure we do this only once - for top-level file */
-      if ('\0' == wsrep_defaults_group_suffix[0])
-      {
-        strncpy(wsrep_defaults_group_suffix, *group_suffix,
-                sizeof(wsrep_defaults_group_suffix) - 1);
-      }
-#endif /* WITH_WSREP */
-
       argc--;
       continue;
     }
@@ -823,12 +804,6 @@ static int search_default_file_with_ext(Process_option_func opt_handler,
   if (!(fp= mysql_file_fopen(key_file_cnf, name, O_RDONLY, MYF(0))))
     return 1;					/* Ignore wrong files */
 
-#ifdef WITH_WSREP
-  /* make sure we do this only once - for top-level file */
-  if ('\0' == wsrep_defaults_file[0])
-    strncpy(wsrep_defaults_file, name, sizeof(wsrep_defaults_file) - 1);
-#endif /* WITH_WSREP */
-
   while (mysql_file_fgets(buff, sizeof(buff) - 1, fp))
   {
     line++;

scripts/wsrep_sst_common.sh

@@ -20,11 +20,13 @@ set -u
 
 WSREP_SST_OPT_BYPASS=0
 WSREP_SST_OPT_BINLOG=""
-WSREP_SST_OPT_CONF_SUFFIX=""
 WSREP_SST_OPT_DATA=""
 WSREP_SST_OPT_AUTH=${WSREP_SST_OPT_AUTH:-}
 WSREP_SST_OPT_USER=${WSREP_SST_OPT_USER:-}
 WSREP_SST_OPT_PSWD=${WSREP_SST_OPT_PSWD:-}
+WSREP_SST_OPT_DEFAULT=""
+WSREP_SST_OPT_EXTRA_DEFAULT=""
+WSREP_SST_OPT_SUFFIX_DEFAULT=""
 
 while [ $# -gt 0 ]; do
 case "$1" in
@@ -33,19 +35,22 @@ case "$1" in
         #
         # Break address string into host:port/path parts
         #
-        if echo $WSREP_SST_OPT_ADDR | grep -qe '^\[.*\]'
+        readonly WSREP_SST_OPT_HOST=${WSREP_SST_OPT_ADDR%%[:/]*}
+        if [ ${WSREP_SST_OPT_HOST:0:1} = '[' ]
         then
             # IPv6 notation
-            readonly WSREP_SST_OPT_HOST=${WSREP_SST_OPT_ADDR/\]*/\]}
-            readonly WSREP_SST_OPT_HOST_UNESCAPED=$(echo $WSREP_SST_OPT_HOST | \
-                 cut -d '[' -f 2 | cut -d ']' -f 1)
+            readonly WSREP_SST_OPT_HOST_UNESCAPED=${WSREP_SST_OPT_HOST:1:-1}
         else
-            # "traditional" notation
-            readonly WSREP_SST_OPT_HOST=${WSREP_SST_OPT_ADDR%%[:/]*}
+            readonly WSREP_SST_OPT_HOST_UNESCAPED=${WSREP_SST_OPT_HOST}
         fi
         readonly WSREP_SST_OPT_PORT=$(echo $WSREP_SST_OPT_ADDR | \
                 cut -d ']' -f 2 | cut -s -d ':' -f 2 | cut -d '/' -f 1)
         readonly WSREP_SST_OPT_PATH=${WSREP_SST_OPT_ADDR#*/}
+        readonly WSREP_SST_OPT_MODULE=${WSREP_SST_OPT_PATH%%/*}
+        remain=${WSREP_SST_OPT_PATH#*/}
+        readonly WSREP_SST_OPT_LSN=${remain%%/*}
+        remain=${remain#*/}
+        readonly WSREP_SST_OPT_SST_VER=${remain%%/*}
         shift
         ;;
     '--bypass')
@@ -56,11 +61,15 @@ case "$1" in
         shift
         ;;
     '--defaults-file')
-        readonly WSREP_SST_OPT_CONF="$2"
+        readonly WSREP_SST_OPT_DEFAULT="$1=$2"
+        shift
+        ;;
+    '--defaults-extra-file')
+        readonly WSREP_SST_OPT_EXTRA_DEFAULT="$1=$2"
         shift
         ;;
     '--defaults-group-suffix')
-        WSREP_SST_OPT_CONF_SUFFIX="$2"
+        readonly WSREP_SST_OPT_SUFFIX_DEFAULT="$1=$2"
         shift
         ;;
     '--host')
@@ -112,7 +121,6 @@ shift
 done
 readonly WSREP_SST_OPT_BYPASS
 readonly WSREP_SST_OPT_BINLOG
-readonly WSREP_SST_OPT_CONF_SUFFIX
 
 # try to use my_print_defaults, mysql and mysqldump that come with the sources
 # (for MTR suite)
@@ -140,17 +148,18 @@ else
     MY_PRINT_DEFAULTS=$(which my_print_defaults)
 fi
 
+readonly WSREP_SST_OPT_CONF="$WSREP_SST_OPT_DEFAULT $WSREP_SST_OPT_EXTRA_DEFAULT $WSREP_SST_OPT_SUFFIX_DEFAULT"
+readonly MY_PRINT_DEFAULTS="${MY_PRINT_DEFAULTS} $WSREP_SST_OPT_CONF"
+
 wsrep_auth_not_set()
 {
     [ -z "$WSREP_SST_OPT_AUTH" -o "$WSREP_SST_OPT_AUTH" = "(null)" ]
 }
 
-# For Bug:1200727
-if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF sst | grep -q "wsrep_sst_auth"
-then
-    if wsrep_auth_not_set
-    then
-        WSREP_SST_OPT_AUTH=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF sst | grep -- "--wsrep_sst_auth" | cut -d= -f2)
+# State Snapshot Transfer authentication password was displayed in the ps output. Bug fixed #1200727.
+if $MY_PRINT_DEFAULTS sst | grep -q "wsrep_sst_auth"; then
+    if wsrep_auth_not_set; then
+            WSREP_SST_OPT_AUTH=$($MY_PRINT_DEFAULTS sst | grep -- "--wsrep_sst_auth" | cut -d= -f2)
     fi
 fi
 readonly WSREP_SST_OPT_AUTH
@@ -229,7 +238,7 @@ wsrep_check_programs()
 # process like encryption, etc.....
 # parse such configuration option. (group for xb settings is [sst] in my.cnf
 #
-# 1st param: group : name of the config file section, e.g. mysqld
+# 1st param: group (config file section like sst) or my_print_defaults argument (like --mysqld)
 # 2nd param: var : name of the variable in the section, e.g. server-id
 # 3rd param: - : default value for the param
 parse_cnf()
@@ -238,20 +247,11 @@ parse_cnf()
     local var=$2
     local reval=""
 
-    # print the default settings for given group using my_print_default.
     # normalize the variable names specified in cnf file (user can use _ or - for example log-bin or log_bin)
-    # then grep for needed variable
+    # then search for needed variable
     # finally get the variable value (if variables has been specified multiple time use the last value only)
 
-    # look in group+suffix
-    if [ -n $WSREP_SST_OPT_CONF_SUFFIX ]; then
-        reval=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF "${group}${WSREP_SST_OPT_CONF_SUFFIX}" | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
-    fi
-
-    # look in group
-    if [ -z $reval ]; then
-        reval=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF $group | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
-    fi
+    reval=$($MY_PRINT_DEFAULTS "${group}" | awk -v var="${var}" 'BEGIN { OFS=FS="=" } { gsub(/_/,"-",$1); if ( $1=="--"var) lastval=substr($0,length($1)+2) } END { print lastval}')
 
     # use default if we haven't found a value
     if [ -z $reval ]; then

scripts/wsrep_sst_mysqldump.sh

@@ -17,10 +17,6 @@
 
 # This is a reference script for mysqldump-based state snapshot tansfer
 
-# This variable is not used in mysqldump sst, so better initialize it
-# to avoid shell's "parameter not set" message.
-WSREP_SST_OPT_CONF=""
-
 . $(dirname $0)/wsrep_sst_common
 PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin
 
@@ -106,8 +102,8 @@ GTID_BINLOG_STATE=$(echo "SHOW GLOBAL VARIABLES LIKE 'gtid_binlog_state'" |\
 $MYSQL_CLIENT $AUTH -S$WSREP_SST_OPT_SOCKET --disable-reconnect --connect_timeout=10 |\
 tail -1 | awk -F ' ' '{ print $2 }')
 
-MYSQL="$MYSQL_CLIENT --defaults-extra-file=$WSREP_SST_OPT_CONF "\
-"$AUTH -h${WSREP_SST_OPT_HOST_UNESCAPED:-$WSREP_SST_OPT_HOST} "\
+MYSQL="$MYSQL_CLIENT $WSREP_SST_OPT_CONF "\
+"$AUTH -h${WSREP_SST_OPT_HOST_UNESCAPED} "\
 "-P$WSREP_SST_OPT_PORT --disable-reconnect --connect_timeout=10"
 
 # Check if binary logging is enabled on the joiner node.

scripts/wsrep_sst_rsync.sh

@@ -102,19 +102,7 @@ fi
 WSREP_LOG_DIR=${WSREP_LOG_DIR:-""}
 # if WSREP_LOG_DIR env. variable is not set, try to get it from my.cnf
 if [ -z "$WSREP_LOG_DIR" ]; then
-    WSREP_LOG_DIR=$(parse_cnf mariadb-10.0 innodb_log_group_home_dir "")
-fi
-if [ -z "$WSREP_LOG_DIR" ]; then
-    WSREP_LOG_DIR=$(parse_cnf mysqld innodb_log_group_home_dir "")
-fi
-if [ -z "$WSREP_LOG_DIR" ]; then
-    WSREP_LOG_DIR=$(parse_cnf server innodb_log_group_home_dir "")
-fi
-if [ -z "$WSREP_LOG_DIR" ]; then
-    WSREP_LOG_DIR=$(parse_cnf mariadb innodb_log_group_home_dir "")
-fi
-if [ -z "$WSREP_LOG_DIR" ]; then
-    WSREP_LOG_DIR=$(parse_cnf mysqld-10.0 innodb_log_group_home_dir "")
+    WSREP_LOG_DIR=$(parse_cnf --mysqld innodb-log-group-home-dir '')
 fi
 
 if [ -n "$WSREP_LOG_DIR" ]; then

scripts/wsrep_sst_xtrabackup.sh

@@ -30,15 +30,13 @@ encrypt=0
 nproc=1
 ecode=0
 XTRABACKUP_PID=""
-SST_PORT=""
-REMOTEIP=""
 tcert=""
 tpem=""
 sockopt=""
 progress=""
 ttime=0
 totime=0
-lsn=""
+lsn="${WSREP_SST_OPT_LSN}"
 incremental=0
 ecmd=""
 rlimit=""
@@ -99,7 +97,7 @@ get_keys()
     fi
 
     if [[ $encrypt -eq 0 ]];then 
-        if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF xtrabackup | grep -q encrypt;then
+        if $MY_PRINT_DEFAULTS xtrabackup | grep -q encrypt;then
             wsrep_log_error "Unexpected option combination. SST may fail. Refer to http://www.percona.com/doc/percona-xtradb-cluster/manual/xtrabackup_sst.html "
         fi
         return
@@ -136,11 +134,7 @@ get_keys()
 
 get_transfer()
 {
-    if [[ -z $SST_PORT ]];then 
-        TSST_PORT=4444
-    else 
-        TSST_PORT=$SST_PORT
-    fi
+    TSST_PORT=${WSREP_SST_OPT_PORT:-4444}
 
     if [[ $tfmt == 'nc' ]];then
         if [[ ! -x `which nc` ]];then 
@@ -155,7 +149,7 @@ get_transfer()
                 tcmd="nc -dl ${TSST_PORT}"
             fi
         else
-            tcmd="nc ${REMOTEIP} ${TSST_PORT}"
+            tcmd="nc ${WSREP_SST_OPT_HOST_UNESCAPED} ${TSST_PORT}"
         fi
     else
         tfmt='socat'
@@ -181,35 +175,24 @@ get_transfer()
                 tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=$tpem,cafile=${tcert}${sockopt} stdio"
             else
                 wsrep_log_info "Encrypting with PEM $tpem, CA: $tcert"
-                tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=$tpem,cafile=${tcert}${sockopt}"
+                tcmd="socat -u stdio openssl-connect:${WSREP_SST_OPT_HOST}:${TSST_PORT},cert=$tpem,cafile=${tcert}${sockopt}"
             fi
         else 
             if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
                 tcmd="socat -u TCP-LISTEN:${TSST_PORT},reuseaddr${sockopt} stdio"
             else
-                tcmd="socat -u stdio TCP:${REMOTEIP}:${TSST_PORT}${sockopt}"
+                tcmd="socat -u stdio TCP:${WSREP_SST_OPT_HOST}:${TSST_PORT}${sockopt}"
             fi
         fi
     fi
 
 }
 
-parse_cnf()
-{
-    local group=$1
-    local var=$2
-    reval=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF $group | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2-)
-    if [[ -z $reval ]];then 
-        [[ -n $3 ]] && reval=$3
-    fi
-    echo $reval
-}
-
 get_footprint()
 {
     pushd $WSREP_SST_OPT_DATA 1>/dev/null
-    payload=$(find . -regex '.*\.ibd$\|.*\.MYI$\|.*\.MYD$\|.*ibdata1$' -type f -print0 | du --files0-from=- --block-size=1 -c | awk 'END { print $1 }')
-    if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF xtrabackup | grep -q -- "--compress";then 
+    payload=$(find . -regex '.*\.ibd$\|.*\.MYI$\|.*\.MYD$\|.*ibdata1$' -type f -print0 | du --files0-from=- --block-size=1 -c -s | awk 'END { print $1 }')
+    if $MY_PRINT_DEFAULTS xtrabackup | grep -q -- "--compress";then 
         # QuickLZ has around 50% compression ratio
         # When compression/compaction used, the progress is only an approximate.
         payload=$(( payload*1/2 ))
@@ -354,17 +337,6 @@ kill_xtrabackup()
     rm -f "$XTRABACKUP_PID"
 }
 
-setup_ports()
-{
-    if [[ "$WSREP_SST_OPT_ROLE"  == "donor" ]];then
-        SST_PORT=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $2 }')
-        REMOTEIP=$(echo $WSREP_SST_OPT_ADDR | awk -F ':' '{ print $1 }')
-        lsn=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $4 }')
-    else
-        SST_PORT=$(echo ${WSREP_SST_OPT_ADDR} | awk -F ':' '{ print $2 }')
-    fi
-}
-
 # waits ~10 seconds for nc to open the port and then reports ready
 # (regardless of timeout)
 wait_for_listen()
@@ -388,8 +360,8 @@ check_extra()
 {
     local use_socket=1
     if [[ $uextra -eq 1 ]];then 
-        if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF mysqld | tr '_' '-' | grep -- "--thread-handling=" | grep -q 'pool-of-threads';then 
-            local eport=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF mysqld | tr '_' '-' | grep -- "--extra-port=" | cut -d= -f2)
+        if [ $(parse_cnf --mysqld thread-handling) = 'pool-of-threads'];then
+            local eport=$(parse_cnf --mysqld extra-port)
             if [[ -n $eport ]];then 
                 # Xtrabackup works only locally.
                 # Hence, setting host to 127.0.0.1 unconditionally. 
@@ -427,8 +399,8 @@ get_stream
 get_transfer
 
 INNOEXTRA=""
-INNOAPPLY="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} --apply-log \$rebuildcmd \${DATA} &>\${DATA}/innobackup.prepare.log"
-INNOBACKUP="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} \$INNOEXTRA --galera-info --stream=\$sfmt \${TMPDIR} 2>\${DATA}/innobackup.backup.log"
+INNOAPPLY="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} --apply-log \$rebuildcmd \${DATA} &>\${DATA}/innobackup.prepare.log"
+INNOBACKUP="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} \$INNOEXTRA --galera-info --stream=\$sfmt \${TMPDIR} 2>\${DATA}/innobackup.backup.log"
 
 if [ "$WSREP_SST_OPT_ROLE" = "donor" ]
 then
@@ -466,7 +438,7 @@ then
 
         check_extra
 
-        wsrep_log_info "Streaming the backup to joiner at ${REMOTEIP} ${SST_PORT}"
+        wsrep_log_info "Streaming the backup to joiner at ${WSREP_SST_OPT_HOST} ${WSREP_SST_OPT_PORT}"
 
         if [[ -n $progress ]];then 
             get_footprint
@@ -533,7 +505,7 @@ then
 
     if [[ $incremental -eq 1 ]];then 
         wsrep_log_info "Incremental SST enabled"
-        #lsn=$(/pxc/bin/mysqld --defaults-file=$WSREP_SST_OPT_CONF  --basedir=/pxc  --wsrep-recover 2>&1 | grep -o 'log sequence number .*' | cut -d " " -f 4 | head -1)
+        #lsn=$(/pxc/bin/mysqld $WSREP_SST_OPT_CONF  --basedir=/pxc  --wsrep-recover 2>&1 | grep -o 'log sequence number .*' | cut -d " " -f 4 | head -1)
         lsn=$(grep to_lsn xtrabackup_checkpoints | cut -d= -f2 | tr -d ' ')
         wsrep_log_info "Recovered LSN: $lsn"
     fi
@@ -546,14 +518,9 @@ then
     # May need xtrabackup_checkpoints later on
     rm -f ${DATA}/xtrabackup_binary ${DATA}/xtrabackup_galera_info  ${DATA}/xtrabackup_logfile
 
-    ADDR=${WSREP_SST_OPT_ADDR}
-    if [ -z "${SST_PORT}" ]
-    then
-        SST_PORT=4444
-        ADDR="$(echo ${WSREP_SST_OPT_ADDR} | awk -F ':' '{ print $1 }'):${SST_PORT}"
-    fi
+    ADDR="${WSREP_SST_OPT_HOST}:${WSREP_SST_OPT_PORT:-4444}"
 
-    wait_for_listen ${SST_PORT} ${ADDR} ${MODULE} &
+    wait_for_listen ${WSREP_SST_OPT_PORT:-4444} ${ADDR} ${MODULE} &
 
     trap sig_joiner_cleanup HUP PIPE INT TERM
     trap cleanup_joiner EXIT
@@ -686,7 +653,7 @@ then
 
         if [[ $incremental -eq 1 ]];then 
             # Added --ibbackup=xtrabackup_55 because it fails otherwise citing connection issues.
-            INNOAPPLY="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} \
+            INNOAPPLY="${INNOBACKUPEX_BIN} ${WSREP_SST_OPT_CONF} \
                 --ibbackup=xtrabackup_55 --apply-log $rebuildcmd --redo-only $BDATA --incremental-dir=${DATA} &>>${BDATA}/innobackup.prepare.log"
         fi
 

sql/wsrep_sst.cc

@@ -30,8 +30,10 @@
 #include <cstdio>
 #include <cstdlib>
 
-extern const char wsrep_defaults_file[];
-extern const char wsrep_defaults_group_suffix[];
+static char wsrep_defaults_file[FN_REFLEN * 2 + 10 + 30 +
+                                sizeof(WSREP_SST_OPT_CONF) +
+                                sizeof(WSREP_SST_OPT_CONF_SUFFIX) +
+                                sizeof(WSREP_SST_OPT_CONF_EXTRA)] = {0};
 
 const char* wsrep_sst_method          = WSREP_SST_DEFAULT;
 const char* wsrep_sst_receive_address = WSREP_SST_ADDRESS_AUTO;
@@ -61,6 +63,28 @@ bool wsrep_sst_method_update (sys_var *self, THD* thd, enum_var_type type)
     return 0;
 }
 
+
+static void make_wsrep_defaults_file()
+{
+  if (!wsrep_defaults_file[0])
+  {
+    char *ptr= wsrep_defaults_file;
+    char *end= ptr + sizeof(wsrep_defaults_file);
+    if (my_defaults_file)
+      ptr= strxnmov(ptr, end - ptr,
+                    WSREP_SST_OPT_CONF, " '", my_defaults_file, "' ", NULL);
+
+    if (my_defaults_extra_file)
+      ptr= strxnmov(ptr, end - ptr,
+                    WSREP_SST_OPT_CONF_EXTRA, " '", my_defaults_extra_file, "' ", NULL);
+
+    if (my_defaults_group_suffix)
+      ptr= strxnmov(ptr, end - ptr,
+                    WSREP_SST_OPT_CONF_SUFFIX, " '", my_defaults_group_suffix, "' ", NULL);
+  }
+}
+
+
 // TODO: Improve address verification.
 static bool sst_receive_address_check (const char* str)
 {
@@ -512,17 +536,18 @@ static ssize_t sst_prepare_other (const char*  method,
   }
   if (strlen(binlog_opt_val)) binlog_opt= WSREP_SST_OPT_BINLOG;
 
+  make_wsrep_defaults_file();
+
   ret= snprintf (cmd_str(), cmd_len,
                  "wsrep_sst_%s "
                  WSREP_SST_OPT_ROLE" 'joiner' "
                  WSREP_SST_OPT_ADDR" '%s' "
                  WSREP_SST_OPT_DATA" '%s' "
-                 WSREP_SST_OPT_CONF" '%s' "
-                 WSREP_SST_OPT_CONF_SUFFIX" '%s' "
+                 " %s "
                  WSREP_SST_OPT_PARENT" '%d'"
                  " %s '%s' ",
                  method, addr_in, mysql_real_data_home,
-                 wsrep_defaults_file, wsrep_defaults_group_suffix,
+                 wsrep_defaults_file,
                  (int)getpid(), binlog_opt, binlog_opt_val);
   my_free(binlog_opt_val);
 
@@ -785,12 +810,14 @@ static int sst_donate_mysqldump (const char*         addr,
 
   if (!bypass && wsrep_sst_donor_rejects_queries) sst_reject_queries(TRUE);
 
+  make_wsrep_defaults_file();
+
   int ret= snprintf (cmd_str(), cmd_len,
                      "wsrep_sst_mysqldump "
                      WSREP_SST_OPT_ADDR" '%s' "
                      WSREP_SST_OPT_LPORT" '%u' "
                      WSREP_SST_OPT_SOCKET" '%s' "
-                     WSREP_SST_OPT_CONF" '%s' "
+                     " '%s' "
                      WSREP_SST_OPT_GTID" '%s:%lld'"
                      "%s",
                      addr, mysqld_port, mysqld_unix_port,
@@ -1091,19 +1118,20 @@ static int sst_donate_other (const char*   method,
   }
   if (strlen(binlog_opt_val)) binlog_opt= WSREP_SST_OPT_BINLOG;
 
+  make_wsrep_defaults_file();
+
   ret= snprintf (cmd_str(), cmd_len,
                  "wsrep_sst_%s "
                  WSREP_SST_OPT_ROLE" 'donor' "
                  WSREP_SST_OPT_ADDR" '%s' "
                  WSREP_SST_OPT_SOCKET" '%s' "
                  WSREP_SST_OPT_DATA" '%s' "
-                 WSREP_SST_OPT_CONF" '%s' "
-                 WSREP_SST_OPT_CONF_SUFFIX" '%s' "
+                 " %s "
                  " %s '%s' "
                  WSREP_SST_OPT_GTID" '%s:%lld'"
                  "%s",
                  method, addr, mysqld_unix_port, mysql_real_data_home,
-                 wsrep_defaults_file, wsrep_defaults_group_suffix,
+                 wsrep_defaults_file,
                  binlog_opt, binlog_opt_val,
                  uuid, (long long) seqno,
                  bypass ? " " WSREP_SST_OPT_BYPASS : "");

sql/wsrep_sst.h

@@ -25,6 +25,7 @@
 #define WSREP_SST_OPT_DATA     "--datadir"
 #define WSREP_SST_OPT_CONF     "--defaults-file"
 #define WSREP_SST_OPT_CONF_SUFFIX "--defaults-group-suffix"
+#define WSREP_SST_OPT_CONF_EXTRA  "--defaults-extra-file"
 #define WSREP_SST_OPT_PARENT   "--parent"
 #define WSREP_SST_OPT_BINLOG   "--binlog"