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dummy server properly configured, nginx configuration for dummy server too, I just need to verify that the nginx configuration is properly modified when dummy server replicas are added/removed (done: it works)

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LUXEY Adrien 2021-05-08 16:36:44 +02:00
parent fab59e7a7a
commit 560e1f1d90
4 changed files with 30 additions and 30 deletions
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11
hammerhead/README.md
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@ -10,9 +10,14 @@
1. Base components: things that need to be installed before services 1. Base components: things that need to be installed before services
* [x] Dummy HTTP server to have something to work with. * [x] Dummy HTTP server to have something to work with.
* [x] Reverse-proxy/load-balancer: `nginx` is a good match for a one-node deployment. Installing it with Nomad/Consul will make me practice Consul Template etc. * [x] Reverse-proxy/load-balancer: nginx is a good match for a one-node deployment. Installing it with Nomad/Consul will make me practice Consul Template etc.
* Generate services configuration outside the `nginx` service definition. * [x] Generate services configuration outside the nginx service definition.
* TLS: Let's Encrypt will probably be part of the same job definition as `nginx`.
Can't do because of *separation of concerns*: files needed by nginx need to be defined in the nginx job specification.
Solution: each new service needs to add its nginx configuration to `app/nginx/config`.
* TLS: Let's Encrypt will probably be part of the same job definition as nginx.
2. Gitea migration 2. Gitea migration

6
hammerhead/app/dummy-http-server/deploy/dummy-http-server.hcl
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@ -3,11 +3,6 @@ job "dummy-http-server" {
group "server-group" { group "server-group" {
count = 5 count = 5
# update {
# canary = 1
# max_parallel = 5
# }
network { network {
port "http" {} port "http" {}
} }
@ -27,6 +22,7 @@ job "dummy-http-server" {
driver = "docker" driver = "docker"
config { config {
ports = ["http"]
image = "hashicorp/http-echo:latest" image = "hashicorp/http-echo:latest"
args = [ args = [
"-listen", ":${NOMAD_PORT_http}", "-listen", ":${NOMAD_PORT_http}",

17
hammerhead/app/nginx/config/dummy-http-server.tpl Normal file
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@ -0,0 +1,17 @@
upstream dummy-http-server-backend {
{{ range service "dummy-http-server" }}
server {{ .Address }}:{{ .Port }};
{{ else }}
server 127.0.0.1:65535; # force a 502
{{ end }}
}
server {
listen 80;
listen [::]:80;
server_name dummy.hammerhead.luxeylab.net;
location / {
proxy_pass http://dummy-http-server-backend;
}
}

26
hammerhead/app/nginx/deploy/nginx.hcl
View file

@ -6,7 +6,7 @@ job "nginx" {
network { network {
port "http" { port "http" {
static = 8080 static = 80
} }
} }
@ -19,34 +19,16 @@ job "nginx" {
driver = "docker" driver = "docker"
config { config {
image = "nginx"
ports = ["http"] ports = ["http"]
image = "nginx"
volumes = [ volumes = [
"local:/etc/nginx/conf.d", "local:/etc/nginx/conf.d",
] ]
} }
template { template {
data = <<EOF data = file("../config/dummy-http-server.tpl")
upstream dummy-http-server-backend { destination = "local/dummy-http-server.conf"
{{ range service "dummy-http-server" }}
server {{ .Address }}:{{ .Port }};
{{ else }}server 127.0.0.1:65535; # force a 502
{{ end }}
}
server {
listen 8080;
location / {
proxy_pass http://dummy-http-server-backend;
}
}
EOF
destination = "local/dummy-http-server-load-balancer.conf"
change_mode = "signal" change_mode = "signal"
change_signal = "SIGHUP" change_signal = "SIGHUP"
} }