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93 lines
3.1 KiB
93 lines
3.1 KiB
7 years ago
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diff -uNr a/heartbeat/rabbitmq-cluster b/heartbeat/rabbitmq-cluster
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--- a/heartbeat/rabbitmq-cluster 2016-02-22 11:09:48.989128414 +0100
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+++ b/heartbeat/rabbitmq-cluster 2016-02-22 11:10:12.011835745 +0100
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@@ -39,7 +39,14 @@
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RMQ_LOG_DIR="/var/log/rabbitmq"
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NODENAME=$(ocf_local_nodename)
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+# this attr represents the current active local rmq node name.
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+# when rmq stops or the node is fenced, this attr disappears
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RMQ_CRM_ATTR_COOKIE="rmq-node-attr-${OCF_RESOURCE_INSTANCE}"
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+# this attr represents the last known active local rmq node name
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+# when rmp stops or the node is fenced, the attr stays forever so
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+# we can continue to map an offline pcmk node to it's rmq node name
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+# equivalent.
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+RMQ_CRM_ATTR_COOKIE_LAST_KNOWN="rmq-node-attr-last-known-${OCF_RESOURCE_INSTANCE}"
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meta_data() {
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cat <<END
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@@ -79,7 +86,7 @@
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rmq_usage() {
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cat <<END
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-usage: $0 {start|stop|monitor|migrate_to|migrate_from|validate-all|meta-data}
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+usage: $0 {start|stop|monitor|notify|validate-all|meta-data}
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Expects to have a fully populated OCF RA-compliant environment set.
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END
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@@ -116,8 +123,13 @@
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exit $OCF_ERR_GENERIC
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fi
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- # store the pcmknode to rmq node mapping as an attribute
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+ # store the pcmknode to rmq node mapping as a transient attribute. This allows
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+ # us to retrieve the join list with a simple xpath.
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${HA_SBIN_DIR}/crm_attribute -N $NODENAME -l reboot --name "$RMQ_CRM_ATTR_COOKIE" -v "$node_name"
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+
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+ # the pcmknode to rmq node mapping as a permanent attribute as well. this lets
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+ # us continue to map offline nodes to their equivalent rmq node name
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+ ${HA_SBIN_DIR}/crm_attribute -N $NODENAME -l forever --name "$RMQ_CRM_ATTR_COOKIE_LAST_KNOWN" -v "$node_name"
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}
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rmq_delete_nodename()
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@@ -262,6 +274,41 @@
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return $OCF_SUCCESS
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}
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+
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+rmq_notify() {
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+ node_list="${OCF_RESKEY_CRM_meta_notify_stop_uname}"
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+ mode="${OCF_RESKEY_CRM_meta_notify_type}-${OCF_RESKEY_CRM_meta_notify_operation}"
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+
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+
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+ # When notifications are on, this agent is going to "forget" nodes once they
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+ # leave the cluster. This is thought to resolve some issues where rabbitmq
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+ # blocks trying to sync with an offline node after a fencing action occurs.
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+ if ! [ "${mode}" = "post-stop" ]; then
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+ return $OCF_SUCCESS
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+ fi
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+
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+ rmq_monitor
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+ if [ $? -ne $OCF_SUCCESS ]; then
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+ # only run forget when we are for sure active
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+ return $OCF_SUCCESS
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+ fi
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+
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+ # forget each stopped rmq instance in the provided pcmk node in the list.
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+ for node in $(echo "$node_list"); do
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+ local rmq_node="$(${HA_SBIN_DIR}/crm_attribute -N $node -l forever --query --name $RMQ_CRM_ATTR_COOKIE_LAST_KNOWN -q)"
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+ if [ -z "$rmq_node" ]; then
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+ ocf_log warn "Unable to map pcmk node $node to a known rmq node."
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+ continue
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+ fi
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+ ocf_log notice "Forgetting stopped node $rmq_node"
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+ $RMQ_CTL forget_cluster_node $rmq_node
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+ if [ $? -ne 0 ]; then
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+ ocf_log warn "Unable to forget offline node $rmq_node."
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+ fi
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+ done
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+ return $OCF_SUCCESS
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+}
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+
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rmq_start() {
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local join_list=""
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local rc
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@@ -357,6 +404,7 @@
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stop) rmq_stop;;
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monitor) rmq_monitor;;
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validate-all) rmq_validate;;
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+notify) rmq_notify;;
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usage|help) rmq_usage
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exit $OCF_SUCCESS
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;;
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