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These tests simulate a dead node rather than a CTDB failure, so drop IP addresses when killing a "node" to avoid problems with duplicates. To cope with a CTDB failure a watchdog would be needed to ensure that the public IPs are dropped when CTDB dies. Let's not do that now. 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 Dec 5 23:29:39 CET 2014 on sn-devel-104
102 lines
3.1 KiB
Bash
Executable File
102 lines
3.1 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 disable the relevant NFS server node and ensure
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that it send 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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Steps:
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1. Verify that the cluster is healthy.
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2. Connect from the current host (test client) to TCP port 2049 using
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the public address of a cluster node.
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3. Determine the source socket used for the connection.
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4. Ensure that CTDB records the source socket details in the nfs-tickles
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directory on shared storage.
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5. Disable the node that the connection has been made to.
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6. Verify that a TCP tickle (a reset packet) is sent to the test client.
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Expected results:
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* CTDB should correctly record the socket and should send a reset
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packet when the node is disabled.
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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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nc -d -w $(($monitor_interval * 4)) $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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