[KARAF-1309] Cellar causes Karaf container to freeze if system got network interface changes between container restarts

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: cellar-2.2.4
• Fix Version/s: cellar-3.0.0, cellar-2.2.7, cellar-2.3.3
• Component/s: cellar

Environment

Karaf-2.2.6-SNAPSHOT from 20120403, Cellar-2.2.4-SNAPSHOT from 20120312

• Assignee: Jean-Baptiste Onofré
• Reporter: Alexey Bespaly
• Created: 04/Apr/12 15:30
• Updated: 13/Sep/18 14:27
• Resolved: 23/Jun/14 14:16

Description

1. Started 4 Karaf instances and installed Cellar on those
cluster:node-list
No. Host Name Port ID

• 1 opti.local 5701 opti.local:5701
  2 opti.local 5702 opti.local:5702
  3 opti.local 5703 opti.local:5703
  4 opti.local 5704 opti.local:5704

opti.local = 192.168.1.86

2. 1,2 - default group; 3,4 - "group1" (not sure if groups are essential here, but were a part of the test case)

cluster:group-list
Node Group
opti.local:5701 default
opti.local:5702 default
opti.local:5703 group1

• opti.local:5704 group1

3. Stopped Karaf containers

4. Got the VPN client on - tun0 (172.27.210.11) network interface added

5. Restarted Karaf containers

• the 1st and the 2nd ones seemed to be working fine:
  cluster:node-list
  No. Host Name Port ID

• 1 172.27.210.11 5701 172.27.210.11:5701
  2 172.27.210.11 5703 172.27.210.11:5703
  3 172.27.210.11 5702 172.27.210.11:5702
  4 172.27.210.11 5704 172.27.210.11:5704

• the 3rd container got inresponsive:

karaf@trun> osgi:list
...no response....

• the 4th shows the following static picture:

...skipped...
[ 211] [Active ] [Creating ] [ ] [ 60] hazelcast (1.9.4.6)
Fragments: 213
[ 212] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Core (2.2.4.SNAPSHOT)
[ 213] [Resolved ] [ ] [ ] [ 60] Apache Karaf :: Cellar :: Hazelcast (2.2.4.SNAPSHOT)
Hosts: 211
[ 214] [Active ] [GracePeriod ] [ ] [ 60] Apache Karaf :: Cellar :: Config (2.2.4.SNAPSHOT)
[ 215] [Active ] [GracePeriod ] [ ] [ 60] Apache Karaf :: Cellar :: Features (2.2.4.SNAPSHOT)
[ 216] [Active ] [GracePeriod ] [ ] [ 60] Apache Karaf :: Cellar :: Bundle (2.2.4.SNAPSHOT)
[ 217] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: DOSGi (2.2.4.SNAPSHOT)
[ 218] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Utils (2.2.4.SNAPSHOT)
[ 219] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Shell (2.2.4.SNAPSHOT)
[ 220] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Management (2.2.4.SNAPSHOT)
karaf@trun>
...and the status does not get changed over the time

Could it be that the stored config conflicts with the newly detected one and brings such an instability in?

Logs of 4 Karaf instances are attached.