Merge pull request #6 from Roblox/examples

Add example jobs.

example/README.md

@@ -0,0 +1,62 @@
+Example jobs
+======
+
+## Redis Server
+
+```
+$ nomad job run redis.nomad
+```
+will start a `redis` server using `nomad-driver-containerd`
+
+### Exec into redis container
+
+```
+$ nomad job status redis
+```
+Copy the allocation ID from the output of `nomad job status` command.
+
+```
+$ nomad alloc exec -i -t <allocation_id> /bin/sh
+```
+
+## Signal Handler
+
+```
+$ nomad job run signal.nomad
+```
+will start the signal handler container. You can send any signal
+[(from a list of supported signals)](https://github.com/hashicorp/consul-template/blob/master/signals/signals_unix.go)
+to this container and it will print the signal on `stdout` for you.
+
+```
+$ nomad job status signal
+```
+Copy the allocation ID from the output of `nomad job status` command.
+
+```
+$ nomad alloc signal -s <signal> <allocation_id>
+```
+
+## Stress
+
+```
+$ nomad job run stress.nomad
+```
+will start a stress test container. This container is based on linux `stress-ng` tool which is used for generating
+heavy load on CPU and memory to do stress testing.
+
+This container executes the following command as an entrypoint to the container:
+```
+stress-ng --cpu 4 --io 4 --vm 4 --vm-bytes 256M --fork 4 --timeout 180s
+```
+The above command will run stress tests for 3 minutes (180 secs).
+
+```
+$ nomad job status stress
+```
+Copy the allocation ID from the output of `nomad job status` command.
+
+While the container is running, you can check the stats using:
+```
+$ nomad alloc status -stats <allocation_id>
+```

example/stress.nomad

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+job "stress" {
+  datacenters = ["dc1"]
+
+  group "stress-group" {
+    task "stress-task" {
+      driver = "containerd-driver"
+
+      config {
+        image = "docker.io/shm32/stress:1.0"
+      }
+
+      restart {
+        attempts = 5
+        delay    = "30s"
+      }
+
+      resources {
+        cpu    = 500
+        memory = 256
+        network {
+          mbits = 10
+        }
+      }
+    }
+  }
+}