I have akka-cluster in production.
One of the nodes crushed (or stopped, I do not know exact what happened).
I restarted the node, but it did not join to the cluster. It did not
received cluster-member-up event.
And when I tried to access to this node through JMX, it just returned false.
There is actual cluster-status result:
{
"self-address": "akka.tcp://HubCache@hubcache1:2552",
"members": [
{
"address": "akka.tcp://HubCache@hubcache1:2552",
"status": "Up",
"roles": [
"HUB"
]
},
{
"address": "akka.tcp://HubCache@hubcache2:2552",
"status": "Up",
"roles": [
"HUB"
]
},
{
"address": "akka.tcp://HubCache@hubcache3:2552",
"status": "Up",
"roles": [
"HUB"
]
},
{
"address": "akka.tcp://HubCache@webbackend1:2552",
"status": "Leaving",
"roles": [
"WEB"
]
},
{
"address": "akka.tcp://HubCache@webbackend2:2552",
"status": "Up",
"roles": [
"WEB"
]
},
{
"address": "akka.tcp://HubCache@webbackend3:2552",
"status": "Up",
"roles": [
"WEB"
]
}
],
"unreachable": [
{
"node": "akka.tcp://HubCache@hubcache3:2552",
"observed-by": [
"akka.tcp://HubCache@webbackend3:2552"
]
},
{
"node": "akka.tcp://HubCache@webbackend1:2552",
"observed-by": [
"akka.tcp://HubCache@hubcache2:2552",
"akka.tcp://HubCache@hubcache3:2552",
"akka.tcp://HubCache@webbackend2:2552",
"akka.tcp://HubCache@webbackend3:2552"
]
},
{
"node": "akka.tcp://HubCache@webbackend3:2552",
"observed-by": [
"akka.tcp://HubCache@hubcache3:2552"
]
}
]
}
Then I tried to remove node:
# /opt/akka/bin/akka-cluster localhost 9999 down
akka.tcp://HubCache@webbackend1:2552
Marking akka.tcp://HubCache@webbackend1:2552 as DOWN
Leave - the same:
# /opt/akka/bin/akka-cluster localhost 9999 leave
akka.tcp://HubCache@webbackend1:2552
Scheduling akka.tcp://HubCache@webbackend1:2552 to LEAVE cluster
No logs related with such commands in the leader. No actions, state does
not change at all.
How can I repair cluster without stopping all nodes?
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