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6b65b0c982
Tested with `kind` and GKE. Note: "nodes" shown in `docker buildx ls` are unrelated to Kubernetes "nodes". Probably buildx should come up with an alternative term. Usage: $ kind create cluster $ export KUBECONFIG="$(kind get kubeconfig-path --name="kind")" $ docker buildx create --driver kubernetes --driver-opt replicas=3 --use $ docker buildx build -t foo --load . `--load` loads the image into the local Docker. Driver opts: - `image=IMAGE` - Sets the container image to be used for running buildkit. - `namespace=NS` - Sets the Kubernetes namespace. Defaults to the current namespace. - `replicas=N` - Sets the number of `Pod` replicas. Defaults to 1. - `rootless=(true|false)` - Run the container as a non-root user without `securityContext.privileged`. Defaults to false. - `loadbalance=(sticky|random)` - Load-balancing strategy. If set to "sticky", the pod is chosen using the hash of the context path. Defaults to "sticky" Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp> |
5 years ago | |
|---|---|---|
| .. | ||
| LICENSE | 5 years ago | |
| README.md | 5 years ago | |
| hashring.go | 5 years ago | |
README.md
hashring
Implements consistent hashing that can be used when the number of server nodes can increase or decrease (like in memcached). The hashing ring is built using the same algorithm as libketama.
This is a port of Python hash_ring library https://pypi.python.org/pypi/hash_ring/ in Go with the extra methods to add and remove nodes.
Using
Importing ::
import "github.com/serialx/hashring"
Basic example usage ::
memcacheServers := []string{"192.168.0.246:11212",
"192.168.0.247:11212",
"192.168.0.249:11212"}
ring := hashring.New(memcacheServers)
server, _ := ring.GetNode("my_key")
To fulfill replication requirements, you can also get a list of servers that should store your key.
serversInRing := []string{"192.168.0.246:11212",
"192.168.0.247:11212",
"192.168.0.248:11212",
"192.168.0.249:11212",
"192.168.0.250:11212",
"192.168.0.251:11212",
"192.168.0.252:11212"}
replicaCount := 3
ring := hashring.New(serversInRing)
server, _ := ring.GetNodes("my_key", replicaCount)
Using weights example ::
weights := make(map[string]int)
weights["192.168.0.246:11212"] = 1
weights["192.168.0.247:11212"] = 2
weights["192.168.0.249:11212"] = 1
ring := hashring.NewWithWeights(weights)
server, _ := ring.GetNode("my_key")
Adding and removing nodes example ::
memcacheServers := []string{"192.168.0.246:11212",
"192.168.0.247:11212",
"192.168.0.249:11212"}
ring := hashring.New(memcacheServers)
ring = ring.RemoveNode("192.168.0.246:11212")
ring = ring.AddNode("192.168.0.250:11212")
server, _ := ring.GetNode("my_key")