@Override
public Status isAgentAlive(Host agent) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("checking if agent (" + agent.getId() + ") is alive");
}
if (agent.getPodId() == null) {
return null;
}
List<Long> otherHosts = findHostByPod(agent.getPodId(), agent.getId());
for (Long hostId : otherHosts) {
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"sending ping from ("
+ hostId
+ ") to agent's host ip address ("
+ agent.getPrivateIpAddress()
+ ")");
}
Status hostState = testIpAddress(hostId, agent.getPrivateIpAddress());
if (hostState == null) {
continue;
}
if (hostState == Status.Up) {
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"ping from ("
+ hostId
+ ") to agent's host ip address ("
+ agent.getPrivateIpAddress()
+ ") successful, returning that agent is disconnected");
}
return Status
.Disconnected; // the computing host ip is ping-able, but the computing agent is down,
// report that the agent is disconnected
} else if (hostState == Status.Down) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("returning host state: " + hostState);
}
return hostState;
}
}
// could not reach agent, could not reach agent's host, unclear what the problem is but it'll
// require more investigation...
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"could not reach agent, could not reach agent's host, returning that we don't have enough information");
}
return null;
}
@Override
public Boolean fenceOff(VirtualMachine vm, Host host) {
if (host.getHypervisorType() != HypervisorType.KVM
&& host.getHypervisorType() != HypervisorType.LXC) {
s_logger.warn("Don't know how to fence non kvm hosts " + host.getHypervisorType());
return null;
}
List<HostVO> hosts = _resourceMgr.listAllHostsInCluster(host.getClusterId());
FenceCommand fence = new FenceCommand(vm, host);
int i = 0;
for (HostVO h : hosts) {
if (h.getHypervisorType() == HypervisorType.KVM
|| h.getHypervisorType() == HypervisorType.LXC) {
if (h.getStatus() != Status.Up) {
continue;
}
i++;
if (h.getId() == host.getId()) {
continue;
}
FenceAnswer answer;
try {
answer = (FenceAnswer) _agentMgr.send(h.getId(), fence);
} catch (AgentUnavailableException e) {
s_logger.info("Moving on to the next host because " + h.toString() + " is unavailable");
continue;
} catch (OperationTimedoutException e) {
s_logger.info("Moving on to the next host because " + h.toString() + " is unavailable");
continue;
}
if (answer != null && answer.getResult()) {
return true;
}
}
}
_alertMgr.sendAlert(
AlertManager.AlertType.ALERT_TYPE_HOST,
host.getDataCenterId(),
host.getPodId(),
"Unable to fence off host: " + host.getId(),
"Fencing off host "
+ host.getId()
+ " did not succeed after asking "
+ i
+ " hosts. "
+ "Check Agent logs for more information.");
s_logger.error("Unable to fence off " + vm.toString() + " on " + host.toString());
return false;
}
public boolean shouldAvoid(Host host) {
if (_dcIds != null && _dcIds.contains(host.getDataCenterId())) {
return true;
}
if (_podIds != null && _podIds.contains(host.getPodId())) {
return true;
}
if (_clusterIds != null && _clusterIds.contains(host.getClusterId())) {
return true;
}
if (_hostIds != null && _hostIds.contains(host.getId())) {
return true;
}
return false;
}