diff options
Diffstat (limited to 'ctdb/tests/CLUSTER/complex/33_gratuitous_arp.sh')
-rwxr-xr-x | ctdb/tests/CLUSTER/complex/33_gratuitous_arp.sh | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/ctdb/tests/CLUSTER/complex/33_gratuitous_arp.sh b/ctdb/tests/CLUSTER/complex/33_gratuitous_arp.sh new file mode 100755 index 0000000..7a0944f --- /dev/null +++ b/ctdb/tests/CLUSTER/complex/33_gratuitous_arp.sh @@ -0,0 +1,74 @@ +#!/bin/bash + +# Verify that a gratuitous ARP is sent when a node is failed out. + +# We ping a public IP and lookup the MAC address in the ARP table. We +# then disable the node and check the ARP table again - the MAC address +# should have changed. This test does NOT test connectivity after the +# failover. + +# 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. + +# Steps: + +# 1. Verify that the cluster is healthy. +# 2. Select a public address and its corresponding node. +# 3. Remove any entries for the chosen address from the ARP table. +# 4. Send a single ping request packet to the selected public address. +# 5. Determine the MAC address corresponding to the public address by +# checking the ARP table. +# 6. Disable the selected node. +# 7. Check the ARP table and check the MAC associated with the public +# address. + +# Expected results: + +# * When a node is disabled the MAC address associated with public +# addresses on that node should change. + +. "${TEST_SCRIPTS_DIR}/cluster.bash" + +set -e + +ctdb_test_init + +select_test_node_and_ips + +echo "Removing ${test_ip} from the local ARP table..." +ip neigh flush "$test_prefix" >/dev/null 2>&1 || true + +echo "Pinging ${test_ip}..." +ping_wrapper -q -n -c 1 $test_ip + +echo "Getting MAC address associated with ${test_ip}..." +original_mac=$(ip neigh show $test_prefix | awk '$4 == "lladdr" {print $5}') +[ -n "$original_mac" ] || die "Couldn't get MAC address for ${test_prefix}" + +echo "MAC address is: ${original_mac}" + +gratarp_sniff_start + +echo "Disabling node $test_node" +try_command_on_node 1 $CTDB disable -n $test_node +wait_until_node_has_status $test_node disabled + +gratarp_sniff_wait_show + +echo "Getting MAC address associated with ${test_ip} again..." +new_mac=$(ip neigh show $test_prefix | awk '$4 == "lladdr" {print $5}') +[ -n "$new_mac" ] || die "Couldn't get MAC address for ${test_prefix}" + +echo "MAC address is: ${new_mac}" + +if [ "$original_mac" != "$new_mac" ] ; then + echo "GOOD: MAC address changed" +else + die "BAD: MAC address did not change" +fi |