Hello All
Recently, we found that VM IP lost in share network. Further analysis of the 
log shows that when VM is deleted, the IP address is deleted incorrectly.I 
can't reproduce this fault, but I've had two such incidents.
Have you ever had such a situation, how to check it or is it a known bug?

cloudstack: 4.13.0

Here are the logs on management and VR (time difference between management and 
VR + 8)

The IP address that should be deleted is: 10.40.59.35
The IP address actually deleted by VR is: 10.40.59.143
That's the problem.

Management.log

2020-02-29 15:47:50,691 DEBUG [c.c.v.VirtualMachineManagerImpl] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) 
Destroying vm VM[User|i-31-4604-VM]
2020-02-29 15:47:50,691 DEBUG [c.c.v.VirtualMachineManagerImpl] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) 
Cleaning up NICS
2020-02-29 15:47:50,691 DEBUG [o.a.c.e.o.NetworkOrchestrator] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) 
Cleaning network for vm: 4604
2020-02-29 15:47:50,703 DEBUG [o.a.c.n.t.AdvancedNetworkTopology] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) 
REMOVE VPC DHCP ENTRY RULES
2020-02-29 15:47:50,704 DEBUG [o.a.c.n.t.BasicNetworkTopology] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) 
Applying dhcp entry in network Ntwk[264|Guest|13]
2020-02-29 15:47:50,726 DEBUG [c.c.a.t.Request] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) Seq 
17-4102497785557818386: Sending  { Cmd , MgmtId: 240661250348494, via: 
17(wxac6005), Ver: v1, Flags: 100011, 
[{"com.cloud.agent.api.routing.DhcpEntryCommand":{"vmMac":"1e:00:c1:00:04:51","vmIpAddress":"10.40.59.35","vmName":"Test-AD01","defaultRouter":"10.40.59.1","defaultDns":"10.40.59.251","duid":"00:03:00:01:1e:00:c1:00:04:51","isDefault":true,"executeInSequence":false,"remove":true,"accessDetails":{"router.name":"r-1247-VM","router.guest.ip":"10.40.59.251","router.ip":"169.254.2.248","zone.network.type":"Advanced"},"wait":0}}]
 }
2020-02-29 15:47:50,726 DEBUG [c.c.a.t.Request] 
(API-Job-Executor-88:ctx-3177c6e5 job-168703 ctx-539ad775) (logid:5de4a319) Seq 
17-4102497785557818386: Executing:  { Cmd , MgmtId: 240661250348494, via: 
17(wxac6005), Ver: v1, Flags: 100011, 
[{"com.cloud.agent.api.routing.DhcpEntryCommand":{"vmMac":"1e:00:c1:00:04:51","vmIpAddress":"10.40.59.35","vmName":"Test-AD01","defaultRouter":"10.40.59.1","defaultDns":"10.40.59.251","duid":"00:03:00:01:1e:00:c1:00:04:51","isDefault":true,"executeInSequence":false,"remove":true,"accessDetails":{"router.name":"r-1247-VM","router.guest.ip":"10.40.59.251","router.ip":"169.254.2.248","zone.network.type":"Advanced"},"wait":0}}]
 }
2020-02-29 15:47:50,726 DEBUG [c.c.a.m.DirectAgentAttache] 
(DirectAgent-426:ctx-eb96586b) (logid:c53c10cb) Seq 17-4102497785557818386: 
Executing request
2020-02-29 15:47:50,726 DEBUG [c.c.a.r.v.VirtualRoutingResource] 
(DirectAgent-426:ctx-eb96586b) (logid:5de4a319) Transforming 
com.cloud.agent.api.routing.DhcpEntryCommand to ConfigItems
2020-02-29 15:47:50,726 DEBUG [c.c.a.r.v.f.AbstractConfigItemFacade] 
(DirectAgent-426:ctx-eb96586b) (logid:5de4a319) Transformed filename: 
vm_dhcp_entry.json to: vm_dhcp_entry.json.c841db94-4a2e-4130-babe-6e8173dbebf4
2020-02-29 15:47:51,053 DEBUG [c.c.h.x.r.CitrixResourceBase] 
(DirectAgent-426:ctx-eb96586b) (logid:5de4a319) Copying VR with ip 
169.254.2.248 config file into host 10.40.38.248


Vr cloud.log
2020-02-29 07:47:54,992  update_config.py <module>:146 update_config.py :: 
Processing incoming file => 
vm_dhcp_entry.json.c841db94-4a2e-4130-babe-6e8173dbebf4
2020-02-29 07:47:54,992  update_config.py process_file:50 Processing JSON file 
vm_dhcp_entry.json.c841db94-4a2e-4130-babe-6e8173dbebf4
2020-02-29 07:47:54,992  merge.py load:296 Continuing with the processing of 
file '/var/cache/cloud/vm_dhcp_entry.json.c841db94-4a2e-4130-babe-6e8173dbebf4'
2020-02-29 07:47:54,996  merge.py process:101 Command of type dhcpentry received
2020-02-29 07:47:55,004  CsHelper.py execute:188 Executing: ip addr show dev 
eth1
2020-02-29 07:47:55,023  CsHelper.py execute:188 Executing: ip addr show dev 
eth0
2020-02-29 07:47:55,042  CsHelper.py execute:188 Executing: ip addr show dev 
eth1
2020-02-29 07:47:55,061  CsAddress.py process:108 Address found in DataBag ==> 
{u'public_ip': u'169.254.2.248', u'one_to_one_nat': False, u'nic_dev_id': u'1', 
u'network': u'169.254.0.0/16', u'netmask': u'255.255.0.0', u'source_nat': 
False, u'broadcast': u'169.254.255.255', u'add': True, u'nw_type': u'control', 
u'device': u'eth1', u'cidr': u'169.254.2.248/16', u'gateway': u'', u'size': 
u'16'}
2020-02-29 07:47:55,061  CsAddress.py process:116 Address 169.254.2.248/16 on 
device eth1 already configured
2020-02-29 07:47:55,062  CsRoute.py defaultroute_exists:115 Checking if default 
ipv4 route is present
2020-02-29 07:47:55,062  CsHelper.py execute:188 Executing: ip -4 route list 0/0
2020-02-29 07:47:55,080  CsRoute.py defaultroute_exists:119 Default route 
found: default via 10.40.59.1 dev eth0
2020-02-29 07:47:55,081  CsHelper.py execute:188 Executing: ip addr show dev 
eth0
2020-02-29 07:47:55,100  CsAddress.py process:108 Address found in DataBag ==> 
{u'public_ip': u'10.40.59.251', u'one_to_one_nat': False, u'nic_dev_id': u'0', 
u'network': u'10.40.59.0/24', u'netmask': u'255.255.255.0', u'source_nat': 
False, u'broadcast': u'10.40.59.255', u'add': True, u'nw_type': u'guest', 
u'device': u'eth0', u'cidr': u'10.40.59.251/24', u'gateway': u'', u'size': 
u'24'}
2020-02-29 07:47:55,101  CsAddress.py process:116 Address 10.40.59.251/24 on 
device eth0 already configured
2020-02-29 07:47:55,101  CsRoute.py add_table:37 Adding route table: 100 
Table_eth0 to /etc/iproute2/rt_tables if not present
2020-02-29 07:47:55,102  CsHelper.py execute:188 Executing: ip rule show
2020-02-29 07:47:55,118  CsHelper.py execute:188 Executing: ip rule show
2020-02-29 07:47:55,136  CsHelper.py execute:188 Executing: ip link show eth0 | 
grep 'state DOWN'
2020-02-29 07:47:55,154  CsHelper.py execute:193 Command 'ip link show eth0 | 
grep 'state DOWN'' returned non-zero exit status 1
2020-02-29 07:47:55,167  CsRoute.py add_network_route:73 Adding route: dev eth0 
table: Table_eth0 network: 10.40.59.0/24 if not present
2020-02-29 07:47:55,168  CsHelper.py execute:188 Executing: ip route show type 
throw 10.40.59.0/24 table Table_eth0 proto static
2020-02-29 07:47:55,186  CsHelper.py execute:188 Executing: sudo ip route flush 
cache
2020-02-29 07:47:55,226  CsHelper.py execute:188 Executing: systemctl start 
cloud-password-server@10.40.59.251
2020-02-29 07:47:55,252  CsHelper.py service:225 Service 
cloud-password-server@10.40.59.251 start
2020-02-29 07:47:55,253  CsRoute.py defaultroute_exists:115 Checking if default 
ipv4 route is present
2020-02-29 07:47:55,253  CsHelper.py execute:188 Executing: ip -4 route list 0/0
2020-02-29 07:47:55,269  CsRoute.py defaultroute_exists:119 Default route 
found: default via 10.40.59.1 dev eth0
2020-02-29 07:47:55,288  CsHelper.py execute:188 Executing: ip addr show
2020-02-29 07:47:55,320  CsFile.py commit:60 Nothing to commit. The 
/etc/dnsmasq.d/cloud.conf file did not change
2020-02-29 07:47:55,320  CsFile.py commit:66 Wrote edited file 
/etc/dhcphosts.txt
2020-02-29 07:47:55,321  CsFile.py commit:68 Updated file in-cache configuration
2020-02-29 07:47:55,321  CsFile.py commit:60 Nothing to commit. The 
/etc/dhcpopts.txt file did not change
2020-02-29 07:47:55,321  CsDhcp.py delete_leases:122 Attempting to delete 
entries from dnsmasq.leases file for VMs which are not on dhcphosts file
2020-02-29 07:47:55,321  CsDhcp.py delete_leases:133 dhcp_release $(ip route 
get 10.40.59.143 | grep eth | head -1 | awk '{print $3}') 10.40.59.143 
1e:00:86:00:04:bd
2020-02-29 07:47:55,321  CsHelper.py execute:188 Executing: dhcp_release $(ip 
route get 10.40.59.143 | grep eth | head -1 | awk '{print $3}') 10.40.59.143 
1e:00:86:00:04:bd
2020-02-29 07:47:55,348  CsDhcp.py delete_leases:137 Deleted 1 entries from 
dnsmasq.leases file
2020-02-29 07:47:55,355  CsFile.py commit:66 Wrote edited file /etc/hosts
2020-02-29 07:47:55,355  CsFile.py commit:68 Updated file in-cache configuration
2020-02-29 07:47:55,355  CsDhcp.py write_hosts:156 Updated hosts file
2020-02-29 07:47:55,355  CsHelper.py execute:188 Executing: systemctl restart 
dnsmasq
2020-02-29 07:47:55,614  CsHelper.py service:225 Service dnsmasq restart
2020-02-29 07:47:55,615  CsHelper.py execute:188 Executing: systemctl stop 
conntrackd
2020-02-29 07:47:55,641  CsHelper.py service:225 Service conntrackd stop
2020-02-29 07:47:55,642  CsHelper.py execute:188 Executing: systemctl stop 
keepalived
2020-02-29 07:47:55,668  CsHelper.py service:225 Service keepalived stop
2020-02-29 07:47:55,668  CsHelper.py execute:188 Executing: mount


-Jerry

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