3 Commits

Author SHA1 Message Date
Alex Ellis (OpenFaaS Ltd)
df4126d8f5 Scale functions with namespace option
Allows alerts to trigger functions to scale when they
also have an optional namespace set.

Tested e2e with Kubernetes 1.15 and a non-default namespace.

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
2019-09-20 18:38:55 +01:00
Alex Ellis (VMware)
299e5a5933 Read config values from environment for max_conns tuning
- max_conns / idle / per host are now read from env-vars and have
defaults set to 1024 for both values
- logging / metrics are collected in the client transaction
rather than via defer (this may impact throughput)
- function cache moved to use RWMutex to try to improve latency
around locking when updating cache
- logging message added to show latency in running GetReplicas
because this was observed to increase in a linear fashion under
high concurrency
- changes tested against 3-node bare-metal 1.13 K8s cluster
with kubeadm

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2019-02-04 11:50:25 +00:00
Alex Ellis (VMware)
9cea08c728 Extract scaling from zero
- extracting this package means it can be used in other components
such as the asynchronous nats-queue-worker which may need to
invoke functions which are scaled down to zero replicas.

Ref: https://github.com/openfaas/nats-queue-worker/issues/32

Tested on Docker Swarm for scaling up, already scaled and not
found error.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>
2018-11-01 15:10:08 +00:00