I am facing a strange problem with cassandra connection, after I added new cassandra node.
Situation before adding node:
- 1 cassandra node on server 1 in data center 1
- Fully operational java applications distributed over many machines
- PHP nginx web server on server 1 in data center 1
- Fully operational PHP application (for displaying results)
Then I added second storage server in data center 2. Both storage servers have replication factor 1 (all data are on both servers). Thus I altered keyspaces. Consequently, data have been synchronized smoothly and their validity has been checked via Datastax Devcenter app.
Situation after adding node:
- 1 cassandra node on server 1 in data center 1
- 1 cassandra node on server 2 in data center 2
- Fully operational java applications distributed over many machines
- PHP nginx web server on server 1 in data center 1
- PHP application crashes with exception:
All connections on all I/O threads are busy..even if there are all connections available.
What I tried next:
- I downloaded Github Datastax PHP code sample
- If I ran this piece from code via console php command, it worked
- If I ran same code in browser through nginx, i received again
All connections on all I/O threads are busy
I haven't changed anything in nginx configuration, or PHP webapp. I just changed keyspaces and synced servers.
Any idea how to get rid of that "connections busy" error?
