Hello,
First of all I want to excuse me for my bad english!
We use heartbeat 2.1.2-3 in a 2 node cluster, just to manage the virtual
IP adress 172.30.4.170. We have a network service that have to run
at both nodes to make sure they have a synchronous data set.
Therefore both nodes have to know which one holds the virtual IP.
I would like to implement that with the heartbeat API.
Now I've several questions about the heartbeat API client:
- Is it possible to gain the current location of the resource (VIP) via
get_resources(hb); or node_status(hb, node); ?
Or is there any other way to get this information inside a C++ program?
- Is there anywhere a documentation about the function "node_status()"?
- What does the second parameter "gboolean need_destroy_chan" of the
function signoff() mean? He is missing in the docu.
- the apigroupname in the apiauth directive (in ha.cf) is the same
as the service name that I have to pass the signon() function?
e.g. If I use the function like this: 'hb->llc_ops->signon(hb, "rsc_loc");'
then I have to use the apiauth directive in this way, right?
apiauth rsc_loc uid=my_service_user gid=my_service_group
- Is there another way to avoid the C++ keyword conflict than in that way?:
#ifdef __cplusplus
extern "C" {
# define delete __fake_delete
# define private __fake_private
// Add other defines for any conflicting C++ keyword
#endif
#include <hb_api.h>
#ifdef __cplusplus
}
#endif
Here are my 2 versions of the code for that:
(only fragments of the whole code from the service)
----
char const *resources;
ll_cluster_t *hb;
hb = ll_cluster_new("heartbeat");
if(hb->llc_ops->signon(hb, "rsc_loc") != HA_OK) {
write_log("HB: signon error: %s\n", hb->llc_ops->errmsg(hb));
}
if ((resources = hb->llc_ops->get_resources(hb)) == NULL) {
write_log("HB: get_resource error: %s\n", hb->llc_ops->errmsg(hb));
} else {
write_log("HB: Current resource status: %s", resources);
// possible are: local, foreign, all, none, transition
}
if (hb->llc_ops->signoff(hb, FALSE) != HA_OK) {
write_log("HB: signoff error: %s\n", hb->llc_ops->errmsg(hb));
}
if (hb->llc_ops->delete(hb) != HA_OK) {
write_log("HB: delete error: %s\n", hb->llc_ops->errmsg(hb));
}
----
----
const char *node;
ll_cluster_t *hb;
static int hb_new = 1;
static int hb_up = 1;
hb = ll_cluster_new("heartbeat");
if (hb == NULL) {
hb_new = 0;
}
write_log("BH: hb_new = %i\n", hb_new);
if (hb_new) {
if (hb->llc_ops->signon(hb, "rsc_loc2") != HA_OK) {
hb_up = 0;
}
write_log("BH: hb_up = %i\n", hb_up);
if (hb_up) {
hb->llc_ops->init_nodewalk(hb);
while ((node = hb->llc_ops->nextnode(hb)) != NULL) {
write_log("HB: %s = %s\n", node,
hb->llc_ops->node_status(hb, node));
}
hb->llc_ops->end_nodewalk(hb);
hb->llc_ops->signoff(hb, FALSE);
}
hb->llc_ops->delete(hb);
}
----
I'm running heartbeat under CentOS release 4.5 (Final) 2.6.9-55.EL i686
on the nodes defas1 (172.30.4.150) and defas2 (172.30.4.160).
I've installed heartbeat with following RPM-packets:
heartbeat-2.1.2-3.el4.centos, hetbeat-ldirectord-2.1.2-3.el4.centos
(I want to use LVS later), heartbeat-pils-2.1.2-3.el4.centos,
heartbeat-gui-2.1.2-3.el4.centos and heartbeat-stonith-2.1.2-3.el4.centos.
The other configurations are attached to this mail.
Do I'd made any fundamental errors?
Thanks in advance,
Stephan
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use_logd yes
udpport 694
keepalive 5
deadtime 15
warntime 10
initdead 45
bcast eth1
serial /dev/ttyS0
baud 115200
ping 172.30.4.170
node defas1 defas2
crm on
auto_failback yes
respawn cluster /etc/init.d/httpd
respawn cluster /usr/lib/heartbeat/ipfail
apiauth rsc_loc uid=defas
# cibadmin -Ql
<cib admin_epoch="0" have_quorum="true" ignore_dtd="false" num_peers="2"
cib_feature_revision="1.3" generated="true" epoch="2" ccm_transition="2"
dc_uuid="6ca8e370-6b00-4b8c-85fe-a67da4c562ba" num_updates="16">
<configuration>
<crm_config>
<cluster_property_set id="cib-bootstrap-options">
<attributes>
<nvpair id="cib-bootstrap-options-symmetric-cluster"
name="symmetric-cluster" value="true"/>
<nvpair id="cib-bootstrap-options-no-quorum-policy"
name="no-quorum-policy" value="stop"/>
<nvpair id="cib-bootstrap-options-default-resource-stickiness"
name="default-resource-stickiness" value="0"/>
<nvpair
id="cib-bootstrap-options-default-resource-failure-stickiness"
name="default-resource-failure-stickiness" value="0"/>
<nvpair id="cib-bootstrap-options-stonith-enabled"
name="stonith-enabled" value="false"/>
<nvpair id="cib-bootstrap-options-stonith-action"
name="stonith-action" value="reboot"/>
<nvpair id="cib-bootstrap-options-stop-orphan-resources"
name="stop-orphan-resources" value="true"/>
<nvpair id="cib-bootstrap-options-stop-orphan-actions"
name="stop-orphan-actions" value="true"/>
<nvpair id="cib-bootstrap-options-remove-after-stop"
name="remove-after-stop" value="false"/>
<nvpair id="cib-bootstrap-options-short-resource-names"
name="short-resource-names" value="true"/>
<nvpair id="cib-bootstrap-options-transition-idle-timeout"
name="transition-idle-timeout" value="5min"/>
<nvpair id="cib-bootstrap-options-default-action-timeout"
name="default-action-timeout" value="15s"/>
<nvpair id="cib-bootstrap-options-is-managed-default"
name="is-managed-default" value="true"/>
</attributes>
</cluster_property_set>
</crm_config>
<nodes>
<node id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c" uname="defas2"
type="normal">
<instance_attributes id="nodes-8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<attributes>
<nvpair id="standby-8d083aa4-14cc-4cca-9a8c-e7308fb2743c"
name="standby" value="off"/>
</attributes>
</instance_attributes>
</node>
<node id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba" uname="defas1"
type="normal"/>
</nodes>
<resources>
<primitive class="ocf" id="IPaddr_172_30_4_170" provider="heartbeat"
type="IPaddr">
<operations>
<op id="IPaddr_172_30_4_170_mon" interval="5s" name="monitor"
timeout="5s"/>
</operations>
<instance_attributes id="IPaddr_172_30_4_170_inst_attr">
<attributes>
<nvpair id="IPaddr_172_30_4_170_attr_0" name="ip"
value="172.30.4.170"/>
</attributes>
</instance_attributes>
</primitive>
</resources>
<constraints>
<rsc_location id="rsc_location_IPaddr_172_30_4_170"
rsc="IPaddr_172_30_4_170">
<rule id="prefered_location_IPaddr_172_30_4_170" score="100">
<expression attribute="#uname"
id="prefered_location_IPaddr_172_30_4_170_expr" operation="eq" value="defas1"/>
</rule>
</rsc_location>
</constraints>
</configuration>
<status>
<node_state uname="defas1" crmd="online" shutdown="0" in_ccm="true"
ha="active" join="member" expected="member"
id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<lrm id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<lrm_resources>
<lrm_resource type="IPaddr" class="ocf" provider="heartbeat"
id="IPaddr_172_30_4_170">
<lrm_rsc_op operation="monitor"
transition_key="3:0:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="2"
crm_feature_set="1.0.9" rc_code="7" interval="0"
op_digest="13778353ce3bc00b69d81fa556ee96bc" id="IPaddr_172_30_4_170_monitor_0"
transition_magic="4:7;3:0:178e89cb-1e2f-42d4-b61d-495f88443227" op_status="4"/>
<lrm_rsc_op id="IPaddr_172_30_4_170_start_0" operation="start"
crm-debug-origin="do_update_resource"
transition_key="4:0:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="0:0;4:0:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="3"
crm_feature_set="1.0.9" rc_code="0" op_status="0" interval="0"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
<lrm_rsc_op id="IPaddr_172_30_4_170_monitor_5000"
operation="monitor" crm-debug-origin="do_update_resource"
transition_key="5:1:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="0:0;5:1:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="4"
crm_feature_set="1.0.9" rc_code="0" op_status="0" interval="5000"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
</lrm_resource>
</lrm_resources>
</lrm>
<transient_attributes id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<instance_attributes id="status-6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<attributes>
<nvpair
id="status-6ca8e370-6b00-4b8c-85fe-a67da4c562ba-probe_complete"
name="probe_complete" value="true"/>
</attributes>
</instance_attributes>
</transient_attributes>
</node_state>
<node_state id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c" uname="defas2"
ha="active" crm-debug-origin="do_cib_replaced" crmd="online" shutdown="0"
in_ccm="true" join="member" expected="member">
<lrm id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<lrm_resources>
<lrm_resource id="IPaddr_172_30_4_170" type="IPaddr" class="ocf"
provider="heartbeat">
<lrm_rsc_op id="IPaddr_172_30_4_170_monitor_0" operation="monitor"
crm-debug-origin="do_update_resource"
transition_key="4:2:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="0:7;4:2:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="2"
crm_feature_set="1.0.9" rc_code="7" op_status="0" interval="0"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
</lrm_resource>
</lrm_resources>
</lrm>
<transient_attributes id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<instance_attributes id="status-8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<attributes>
<nvpair
id="status-8d083aa4-14cc-4cca-9a8c-e7308fb2743c-probe_complete"
name="probe_complete" value="true"/>
</attributes>
</instance_attributes>
</transient_attributes>
</node_state>
</status>
</cib>
use_logd yes
udpport 694
keepalive 5
deadtime 15
warntime 10
initdead 45
bcast eth1
serial /dev/ttyS0
baud 115200
ping 172.30.4.170
node defas1 defas2
crm on
auto_failback yes
respawn cluster /etc/init.d/httpd
respawn cluster /usr/lib/heartbeat/ipfail
apiauth rsc_loc uid=defas
# cibadmin -Ql
<cib admin_epoch="0" have_quorum="true" ignore_dtd="false" num_peers="2"
cib_feature_revision="1.3" generated="true" epoch="2" num_updates="16"
cib-last-written="Wed Jan 2 11:54:15 2008" ccm_transition="2"
dc_uuid="6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<configuration>
<crm_config>
<cluster_property_set id="cib-bootstrap-options">
<attributes>
<nvpair id="cib-bootstrap-options-symmetric-cluster"
name="symmetric-cluster" value="true"/>
<nvpair id="cib-bootstrap-options-no-quorum-policy"
name="no-quorum-policy" value="stop"/>
<nvpair id="cib-bootstrap-options-default-resource-stickiness"
name="default-resource-stickiness" value="0"/>
<nvpair
id="cib-bootstrap-options-default-resource-failure-stickiness"
name="default-resource-failure-stickiness" value="0"/>
<nvpair id="cib-bootstrap-options-stonith-enabled"
name="stonith-enabled" value="false"/>
<nvpair id="cib-bootstrap-options-stonith-action"
name="stonith-action" value="reboot"/>
<nvpair id="cib-bootstrap-options-stop-orphan-resources"
name="stop-orphan-resources" value="true"/>
<nvpair id="cib-bootstrap-options-stop-orphan-actions"
name="stop-orphan-actions" value="true"/>
<nvpair id="cib-bootstrap-options-remove-after-stop"
name="remove-after-stop" value="false"/>
<nvpair id="cib-bootstrap-options-short-resource-names"
name="short-resource-names" value="true"/>
<nvpair id="cib-bootstrap-options-transition-idle-timeout"
name="transition-idle-timeout" value="5min"/>
<nvpair id="cib-bootstrap-options-default-action-timeout"
name="default-action-timeout" value="15s"/>
<nvpair id="cib-bootstrap-options-is-managed-default"
name="is-managed-default" value="true"/>
</attributes>
</cluster_property_set>
</crm_config>
<nodes>
<node id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c" uname="defas2"
type="normal">
<instance_attributes id="nodes-8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<attributes>
<nvpair id="standby-8d083aa4-14cc-4cca-9a8c-e7308fb2743c"
name="standby" value="off"/>
</attributes>
</instance_attributes>
</node>
<node id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba" uname="defas1"
type="normal"/>
</nodes>
<resources>
<primitive class="ocf" id="IPaddr_172_30_4_170" provider="heartbeat"
type="IPaddr">
<operations>
<op id="IPaddr_172_30_4_170_mon" interval="5s" name="monitor"
timeout="5s"/>
</operations>
<instance_attributes id="IPaddr_172_30_4_170_inst_attr">
<attributes>
<nvpair id="IPaddr_172_30_4_170_attr_0" name="ip"
value="172.30.4.170"/>
</attributes>
</instance_attributes>
</primitive>
</resources>
<constraints>
<rsc_location id="rsc_location_IPaddr_172_30_4_170"
rsc="IPaddr_172_30_4_170">
<rule id="prefered_location_IPaddr_172_30_4_170" score="100">
<expression attribute="#uname"
id="prefered_location_IPaddr_172_30_4_170_expr" operation="eq" value="defas1"/>
</rule>
</rsc_location>
</constraints>
</configuration>
<status>
<node_state id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba" uname="defas1"
crmd="online" crm-debug-origin="do_lrm_query" shutdown="0" in_ccm="true"
ha="active" join="member" expected="member">
<transient_attributes id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<instance_attributes id="status-6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<attributes>
<nvpair
id="status-6ca8e370-6b00-4b8c-85fe-a67da4c562ba-probe_complete"
name="probe_complete" value="true"/>
</attributes>
</instance_attributes>
</transient_attributes>
<lrm id="6ca8e370-6b00-4b8c-85fe-a67da4c562ba">
<lrm_resources>
<lrm_resource id="IPaddr_172_30_4_170" type="IPaddr" class="ocf"
provider="heartbeat">
<lrm_rsc_op id="IPaddr_172_30_4_170_monitor_0" operation="monitor"
crm-debug-origin="build_active_RAs"
transition_key="3:0:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="4:7;3:0:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="2"
crm_feature_set="1.0.9" rc_code="7" op_status="4" interval="0"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
<lrm_rsc_op id="IPaddr_172_30_4_170_start_0" operation="start"
crm-debug-origin="build_active_RAs"
transition_key="4:0:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="0:0;4:0:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="3"
crm_feature_set="1.0.9" rc_code="0" op_status="0" interval="0"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
<lrm_rsc_op id="IPaddr_172_30_4_170_monitor_5000"
operation="monitor" crm-debug-origin="build_active_RAs"
transition_key="5:1:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="0:0;5:1:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="4"
crm_feature_set="1.0.9" rc_code="0" op_status="0" interval="5000"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
</lrm_resource>
</lrm_resources>
</lrm>
</node_state>
<node_state id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c" uname="defas2"
ha="active" crm-debug-origin="do_update_resource" crmd="online" shutdown="0"
in_ccm="true" join="member" expected="member">
<lrm id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<lrm_resources>
<lrm_resource id="IPaddr_172_30_4_170" type="IPaddr" class="ocf"
provider="heartbeat">
<lrm_rsc_op id="IPaddr_172_30_4_170_monitor_0" operation="monitor"
crm-debug-origin="do_update_resource"
transition_key="4:2:178e89cb-1e2f-42d4-b61d-495f88443227"
transition_magic="0:7;4:2:178e89cb-1e2f-42d4-b61d-495f88443227" call_id="2"
crm_feature_set="1.0.9" rc_code="7" op_status="0" interval="0"
op_digest="13778353ce3bc00b69d81fa556ee96bc"/>
</lrm_resource>
</lrm_resources>
</lrm>
<transient_attributes id="8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<instance_attributes id="status-8d083aa4-14cc-4cca-9a8c-e7308fb2743c">
<attributes>
<nvpair
id="status-8d083aa4-14cc-4cca-9a8c-e7308fb2743c-probe_complete"
name="probe_complete" value="true"/>
</attributes>
</instance_attributes>
</transient_attributes>
</node_state>
</status>
</cib>
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