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samba-mirror/ctdb/tests/complex/36_smb_reset_server.sh
Martin Schwenke 9e954bcbf4 ctdb-tests: Don't use nc -d or -w options
nmap-ncat is used in some distributions to replace netcat.  It has a
different meaning for these options.

We can get the same effect as the current combination of -d and -w by
piping a sleep process to nc.  Subsequent use of $! works because it
gets the last process in pipeline.

Note that redirecting from /dev/null doesn't work with some versions
of nc.  They just exit when they get EOF.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>

Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Mar  9 12:24:13 CET 2018 on sn-devel-144
2018-03-09 12:24:13 +01:00

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#!/bin/bash
test_info()
{
cat <<EOF
Verify that the server end of an SMB connection is correctly reset
Prerequisites:
* An active CTDB cluster with at least 2 nodes with public addresses.
* Test must be run on a real or virtual cluster rather than against
local daemons.
* Test must not be run from a cluster node.
* Clustered Samba must be listening on TCP port 445.
Expected results:
* CTDB should correctly record the connection and the releasing node
should reset the server end of the connection.
EOF
}
. "${TEST_SCRIPTS_DIR}/integration.bash"
set -e
ctdb_test_init "$@"
ctdb_test_check_real_cluster
cluster_is_healthy
# Reset configuration
ctdb_restart_when_done
# We need this for later, so we know how long to sleep.
try_command_on_node 0 $CTDB getvar MonitorInterval
monitor_interval="${out#*= }"
select_test_node_and_ips
test_port=445
echo "Set NoIPTakeover=1 on all nodes"
try_command_on_node all $CTDB setvar NoIPTakeover 1
echo "Give the recovery daemon some time to reload tunables"
sleep_for 5
echo "Connecting to node ${test_node} on IP ${test_ip}:${test_port} with nc..."
sleep $((monitor_interval * 4)) | nc $test_ip $test_port &
nc_pid=$!
ctdb_test_exit_hook_add "kill $nc_pid >/dev/null 2>&1"
wait_until_get_src_socket "tcp" "${test_ip}:${test_port}" $nc_pid "nc"
src_socket="$out"
echo "Source socket is $src_socket"
# This should happen as soon as connection is up... but unless we wait
# we sometimes beat the registration.
echo "Checking if CIFS connection is tracked by CTDB on test node..."
wait_until 10 check_tickles $test_node $test_ip $test_port $src_socket
echo "$out"
if [ "${out/SRC: ${src_socket} /}" != "$out" ] ; then
echo "GOOD: CIFS connection tracked OK by CTDB."
else
echo "BAD: Socket not tracked by CTDB."
exit 1
fi
# It would be nice if ss consistently used local/peer instead of src/dst
ss_filter="src ${test_ip}:${test_port} dst ${src_socket}"
try_command_on_node $test_node \
"ss -tn state established '${ss_filter}' | tail -n +2"
if [ -z "$out" ] ; then
echo "BAD: ss did not list the socket"
exit 1
fi
echo "GOOD: ss lists the socket:"
echo "$out"
echo "Disabling node $test_node"
try_command_on_node 1 $CTDB disable -n $test_node
wait_until_node_has_status $test_node disabled
try_command_on_node $test_node \
"ss -tn state established '${ss_filter}' | tail -n +2"
if [ -n "$out" ] ; then
echo "BAD: ss listed the socket after failover"
exit 1
fi
echo "GOOD: ss no longer lists the socket"