Github user ustcweizhou commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/1198#discussion_r47202713
--- Diff:
engine/orchestration/src/org/apache/cloudstack/engine/orchestration/NetworkOrchestrator.java
---
@@ -2558,6 +2575,62 @@ public boolean restartNetwork(Long networkId,
Account callerAccount, User caller
}
}
+ /* If there are redundant routers in the isolated network, we follow
the steps to make the network working better
+ * (1) destroy backup router if exists
+ * (2) create new backup router
+ * (3) destroy master router (then the backup will become master)
+ * (4) create a new router as backup router.
+ */
+ private boolean restartGuestNetworkWithRedundantRouters(NetworkVO
network, List<DomainRouterVO> routers, ReservationContext context) throws
ResourceUnavailableException, ConcurrentOperationException,
InsufficientCapacityException {
+ Account caller = CallContext.current().getCallingAccount();
+ long callerUserId = CallContext.current().getCallingUserId();
+
+ // check the master and backup redundant state
+ DomainRouterVO masterRouter = null;
+ DomainRouterVO backupRouter = null;
+ if (routers != null && routers.size() == 1) {
+ masterRouter = routers.get(0);
+ } if (routers != null && routers.size() == 2) {
+ DomainRouterVO router1 = routers.get(0);
+ DomainRouterVO router2 = routers.get(1);
+ if (router1.getRedundantState() == RedundantState.MASTER ||
router2.getRedundantState() == RedundantState.BACKUP) {
+ masterRouter = router1;
+ backupRouter = router2;
+ } else if (router1.getRedundantState() ==
RedundantState.BACKUP || router2.getRedundantState() == RedundantState.MASTER) {
+ masterRouter = router2;
+ backupRouter = router1;
+ } else { // both routers are in UNKNOWN state
+ masterRouter = router1;
+ backupRouter = router2;
+ }
+ }
+
+ NetworkOfferingVO offering =
_networkOfferingDao.findByIdIncludingRemoved(network.getNetworkOfferingId());
+ DeployDestination dest = new
DeployDestination(_dcDao.findById(network.getDataCenterId()), null, null, null);
+ List<Provider> providersToImplement =
getNetworkProviders(network.getId());
+
+ // destroy backup router
+ if (backupRouter != null) {
+ _routerService.destroyRouter(backupRouter.getId(), caller,
callerUserId);
+ }
+ // create new backup router
+ implementNetworkElements(dest, context, network, offering,
providersToImplement);
+
+ // destroy master router
+ if (masterRouter != null) {
+ try {
+ Thread.sleep(10000); // wait 10s for the
keepalived/conntrackd on backup router
--- End diff --
if we can make sure that the keepalived/conntrackd are running when the VR
becomes Running.
I think the sleep is needed, no matter we destroy/create backup or master
router at first, because there is always a state change from BACKUP to MASTER.
in your method, the sleep is not needed at the first step, but it does at
the second step.
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