Index: scripts/wsrep_sst_rsync.sh
--- scripts/wsrep_sst_rsync.sh.orig
+++ scripts/wsrep_sst_rsync.sh
@@ -117,9 +117,14 @@ check_pid_and_port()
                 fi
                 port_info=$(sockstat "$opts" "$port" 2>/dev/null | \
                     grep -E '[[:space:]]LISTEN' | grep -o -E "$filter")
-            else
+            elif [ $ss_available -ne 0 ]; then
                 port_info=$(ss -nlpH "( sport = :$port )" 2>/dev/null | \
                     grep -F 'users:(' | grep -o -E "$filter")
+            elif [ $fstat_available -ne 0 ]; then
+                port_info=$(fstat -n 2>/dev/null | grep -E "[[:space:]](\\*|\\[?::\\]?):$port\$")
+            else
+                wsrep_log_error "Unknown sockets utility"
+                exit 2 # ENOENT
             fi
             echo "$port_info" | \
             grep -q -E "[[:space:]](\\*|\\[?::\\]?):$port\$" && busy=1
@@ -474,9 +479,9 @@ EOF
                     # Preparing binlog files for transfer:
                     wsrep_log_info "Preparing binlog files for transfer:"
                     tar_type=0
-                    if tar --help | grep -qw -F -- '--transform'; then
+                    if tar --help 2>/dev/null | grep -qw -F -- '--transform'; then
                         tar_type=1
-                    elif tar --version | grep -qw -E '^bsdtar'; then
+                    elif tar --version 2>/dev/null | grep -qw -E '^bsdtar'; then
                         tar_type=2
                     fi
                     if [ $tar_type -eq 2 ]; then
@@ -974,7 +979,7 @@ EOF
             fi
             # Extracting binlog files:
             wsrep_log_info "Extracting binlog files:"
-            if tar --version | grep -qw -E '^bsdtar'; then
+            if tar --version 2>/dev/null | grep -qw -E '^bsdtar'; then
                 tar -tf "$BINLOG_TAR_FILE" > "$tmpfile" && \
                 tar -xvf "$BINLOG_TAR_FILE" > /dev/null || RC=$?
             else