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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
91 lines
2.7 KiB
Bash
Executable File
91 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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test_info()
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{
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cat <<EOF
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Verify that NFS connections are monitored and that NFS tickles are sent.
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We create a connection to the NFS server on a node and confirm that
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this connection is registered in the nfs-tickles/ subdirectory in
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shared storage. Then kill ctdbd on the relevant NFS server node and
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ensure that the takeover node sends an appropriate reset packet.
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Prerequisites:
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* An active CTDB cluster with at least 2 nodes with public addresses.
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* Test must be run on a real or virtual cluster rather than against
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local daemons.
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* Test must not be run from a cluster node.
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* Cluster nodes must be listening on the NFS TCP port (2049).
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Expected results:
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* CTDB should correctly record the socket and on failover the takeover
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node should send a reset packet.
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EOF
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}
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. "${TEST_SCRIPTS_DIR}/integration.bash"
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set -e
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ctdb_test_init "$@"
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ctdb_test_check_real_cluster
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cluster_is_healthy
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# Reset configuration
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ctdb_restart_when_done
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# We need this for later, so we know how long to run nc for.
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try_command_on_node any $CTDB getvar MonitorInterval
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monitor_interval="${out#*= }"
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#echo "Monitor interval on node $test_node is $monitor_interval seconds."
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select_test_node_and_ips
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try_command_on_node $test_node "$CTDB listnodes | wc -l"
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numnodes="$out"
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test_port=2049
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echo "Connecting to node ${test_node} on IP ${test_ip}:${test_port} with netcat..."
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sleep $((monitor_interval * 4)) | nc $test_ip $test_port &
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nc_pid=$!
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ctdb_test_exit_hook_add "kill $nc_pid >/dev/null 2>&1"
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wait_until_get_src_socket "tcp" "${test_ip}:${test_port}" $nc_pid "nc"
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src_socket="$out"
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echo "Source socket is $src_socket"
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wait_for_monitor_event $test_node
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echo "Wait until NFS connection is tracked by CTDB on test node ..."
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wait_until 10 check_tickles $test_node $test_ip $test_port $src_socket
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echo "Getting TicklesUpdateInterval..."
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try_command_on_node $test_node $CTDB getvar TickleUpdateInterval
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update_interval="$out"
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echo "Wait until NFS connection is tracked by CTDB on all nodes..."
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wait_until $(($update_interval * 2)) \
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check_tickles_all $numnodes $test_ip $test_port $src_socket
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tcptickle_sniff_start $src_socket "${test_ip}:${test_port}"
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# We need to be nasty to make that the node being failed out doesn't
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# get a chance to send any tickles and confuse our sniff. IPs also
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# need to be dropped because we're simulating a dead node rather than
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# a CTDB failure. To properly handle a CTDB failure we would need a
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# watchdog to drop the IPs when CTDB disappears.
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echo "Killing ctdbd on ${test_node}..."
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try_command_on_node -v $test_node "killall -9 ctdbd ; $CTDB_TEST_WRAPPER drop_ips ${test_node_ips}"
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wait_until_node_has_status $test_node disconnected
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tcptickle_sniff_wait_show
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