luxolus/open-nomad
2
0
Fork 0
Code Issues 1 Pull requests Packages Releases Wiki Activity

docs: fixup from cr comments

Browse source
This commit is contained in:
Seth Hoenig 2022-07-07 08:37:10 -05:00
parent 1c31ef285e
commit b9fe6c8d2c
1 changed files with 8 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
website/content/docs/job-specification/template.mdx
View file

@ -324,15 +324,19 @@ To enable simple load balancing, the `nomadService` function requires 3 argument
- The hashing key (should be unique, but consistent per requester) - The hashing key (should be unique, but consistent per requester)
- The service name - The service name
By using `NOMAD_ALLOC_ID` as the hashing key, the selected instances will remain mostly By using `NOMAD_ALLOC_ID` as the hashing key, the selected instances will remain
stable for the allocation, even as instances of the service are added or removed. mostly stable for the allocation. Each time the template is run, `nomadService`
will return the same set of instances for each allocation - unless N instances of
the service are added or removed, in which case there is a 1/N chance of a selected
instance being replaced. This helps maintain a more consistent output when rendering
configuration files, triggering fewer restarts and signaling of Nomad tasks.
```hcl ```hcl
template { template {
data = <<EOH data = <<EOH
# Configuration for 1 redis instances, as assigned via rendezvous hashing.
{{$allocID := env "NOMAD_ALLOC_ID" -}} {{$allocID := env "NOMAD_ALLOC_ID" -}}
# Configuration for 3 redis instances, as assigned via rendezvous hashing. {{range nomadService 1 $allocID "redis"}}
{{range nomadService 3 $allocID "redis"}}
server {{ .Address }}:{{ .Port }};{{- end }} server {{ .Address }}:{{ .Port }};{{- end }}
{{- end}} {{- end}}
EOH EOH