From 83664e21e4fb6755c8c0c90d3dee8819d36928c9 Mon Sep 17 00:00:00 2001
From: Alexey Yurchenko <ayurchen@galeracluster.com>
Date: Fri, 3 Mar 2017 20:28:27 +0000
Subject: MW-366 Improved support for IPv6 networks - made mysqld and SST
 scripts to recognize []-escaped IPv6 addresses - pulled in latest Percona and
 MariaDB updates to SST scripts - instruct netcat and socat in
 wsrep_sst_xtrabackup-v2 to listen on IPv6 socket via sockopt parameter in the
 [sst] section of my.cnf

In summary, wsrep_node_address and wsrep_sst_receive_address can now
be set to IPv6 addresses escaped by []. Rsync SST works out ouf the
box thanks to rsync daemon listening on both IPv4 and IPv6 sockets by
default. For xtrabackup SST onver IPv6 one needs to set sockopt in
the [sst] section of joiner's configuration file to ",pf=ip6" if
using socat as a streamer or to "-6" if using netcat.
---
 scripts/wsrep_sst_rsync.sh | 44 +++++++++++++++++++++++++++++---------------
 1 file changed, 29 insertions(+), 15 deletions(-)

(limited to 'scripts/wsrep_sst_rsync.sh')

diff --git a/scripts/wsrep_sst_rsync.sh b/scripts/wsrep_sst_rsync.sh
index 62f9e234d0e..1c1b09ce68f 100644
--- a/scripts/wsrep_sst_rsync.sh
+++ b/scripts/wsrep_sst_rsync.sh
@@ -67,6 +67,11 @@ check_pid_and_port()
       exit 2 # ENOENT
     fi
 
+    if ! which lsof > /dev/null; then
+        wsrep_log_error "lsof tool not found in PATH! Make sure you have it installed."
+        exit 2 # ENOENT
+    fi
+
     local port_info=$(lsof -i :$rsync_port -Pn 2>/dev/null | \
         grep "(LISTEN)")
     local is_rsync=$(echo $port_info | \
@@ -97,10 +102,19 @@ fi
 WSREP_LOG_DIR=${WSREP_LOG_DIR:-""}
 # if WSREP_LOG_DIR env. variable is not set, try to get it from my.cnf
 if [ -z "$WSREP_LOG_DIR" ]; then
-    WSREP_LOG_DIR=$($MY_PRINT_DEFAULTS --defaults-file \
-                   "$WSREP_SST_OPT_CONF" mysqld server mysqld-10.0 mariadb mariadb-10.0 \
-                    | grep -- '--innodb[-_]log[-_]group[-_]home[-_]dir=' \
-                    | cut -b 29- )
+    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 "")
 fi
 
 if [ -n "$WSREP_LOG_DIR" ]; then
@@ -208,8 +222,8 @@ then
         [ "$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 -not -name "lost+found" -print0 | \
-             xargs -I{} -0 -P $count \
+        find . -maxdepth 1 -mindepth 1 -type d -not -name "lost+found" \
+             -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"/{}/ \
@@ -252,25 +266,24 @@ then
     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
 
     RSYNC_CONF="$WSREP_SST_OPT_DATA/$MODULE.conf"
 
+    if [ -n "${MYSQL_TMP_DIR:-}" ] ; then
+        SILENT="log file = $MYSQL_TMP_DIR/rsyncd.log"
+    else
+        SILENT=""
+    fi
+
 cat << EOF > "$RSYNC_CONF"
 pid file = $RSYNC_PID
 use chroot = no
 read only = no
 timeout = 300
+$SILENT
 [$MODULE]
     path = $WSREP_SST_OPT_DATA
 [$MODULE-log_dir]
@@ -280,6 +293,7 @@ EOF
 #    rm -rf "$DATA"/ib_logfile* # we don't want old logs around
 
     # listen at all interfaces (for firewalled setups)
+    readonly RSYNC_PORT=${WSREP_SST_OPT_PORT:-4444}
     rsync --daemon --no-detach --port $RSYNC_PORT --config "$RSYNC_CONF" &
     RSYNC_REAL_PID=$!
 
@@ -288,7 +302,7 @@ EOF
         sleep 0.2
     done
 
-    echo "ready $ADDR/$MODULE"
+    echo "ready $WSREP_SST_OPT_HOST:$RSYNC_PORT/$MODULE"
 
     # wait for SST to complete by monitoring magic file
     while [ ! -r "$MAGIC_FILE" ] && check_pid "$RSYNC_PID" && \
-- 
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