The different MAC address for a pair of redundant router have issues when short
time network outrage happened. When this happened:
1. BACKUP(r-2) cannot receive the broadcast from MASTER(r-1).
2. Then r-2 would announce it's MASTER after 3 seconds, and send gratuitous ARP
to the gateway of public ip(usually a rack router).
3. The gateway of public ip would update it's ARP cache to associate the public
ip of the network to the MAC of r-2.
4. In the meantime, r-1 still sending out VRRP broadcast(due to network issue,
the broadcast never arrived at r-2), and acting as MASTER.
5. After network outrage, r-2 would receive the higher priority VRRP broadcast
from MASTER again, then receded as BACKUP.
6. But the public gateway would still associate public ip with MAC of r-2, thus
caused the issue. r-1 would no longer able to receive any packets from public
network.
And there is no way for r-1 to send gratuitous ARP again, because it's always
consider itself as MASTER, no state changed, and no hook existed for receiving
lower priority broadcast.
So I would revert this change, and introduce another commit to ensure the newly
create redundant router would share the same MAC as the first one.
This reverts commit 9f257aa60b62f24193bba3f7c902e7779632e01e.
Detail: Previously in the code we allowed the configuration to create ssh
keypairs and put them in the configuration table so that systemvms could have
ssh key auth and work properly if the user was 'cloud' or if the developer
configuration item was set to true. It got changed to requiring both the cloud
user and the developer flag (using an || on a negative) somwhere along the way.
This changes it back to && on a negative to allow us to run as non-cloud users
with the dev flag set, and for cloud to deploy properly without the developer
flag.
Signed-off-by: Marcus Sorensen <marcus@betterservers.com> 1358285190 -0700
CS allows to add multiple VLANs and subnets to a shared network, but it doesn't really work, for example , vm on second VLAN or subnet cannot get IP through DHCP
This patch will not allow to add mulitple VLANS or subnets into shared network
CLOUDSTACK-982:Do not allow add multiple VLANs or subnets into shared network
A couple of lines back there is:
if (isSystem != null) {
sc.addAnd("systemUse", SearchCriteria.Op.EQ, isSystem);
}
So it was set redundantly, this can be removed.
Plugin should not be responsible for existence of checking an API, this was wrong.
Throw exception boldly when checkAccess fails.
Signed-off-by: Rohit Yadav <bhaisaab@apache.org>
- Makes plugins self contained so they decide their properties file format
- PluggableService creates the contract that implementing entity will return a
properties map which is apiname:rolemask (both are strings)
Signed-off-by: Rohit Yadav <bhaisaab@apache.org>
NetworkServiceImpl does not need a cache of system network offerings
Ensure mocks build to new APIs.
Signed-off-by: Chiradeep Vittal <chiradeep@apache.org>
