NewsBlur/docker/haproxy/haproxy.consul.cfg.j2

global
    maxconn 100000
    daemon
    ca-base /srv/newsblur/config/certificates
    crt-base /srv/newsblur/config/certificates
    tune.bufsize 32000
    tune.maxrewrite 8196
    tune.ssl.default-dh-param 2048
    log 127.0.0.1 local0 notice
    log 127.0.0.1 local1 info

resolvers consul
    nameserver consul 127.0.0.1:53
    accepted_payload_size 8192 # allow larger DNS payloads

defaults
    log global
    maxconn 100000
    mode http
    option forwardfor
    option http-server-close
    option httpclose
    option log-health-checks
    option log-separate-errors
    option httplog
    option redispatch
    option abortonclose
    timeout connect 10s
    timeout client 10s
    timeout server 30s
    timeout tunnel 1h
    retries 3
    errorfile 502 /srv/newsblur/templates/502.http
    errorfile 503 /srv/newsblur/templates/502.http
    errorfile 504 /srv/newsblur/templates/502.http

    # balance roundrobin

frontend public
    bind :80
    bind :443 ssl crt /srv/newsblur/config/certificates/newsblur.com.pem ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES128-SHA:AES256-SHA256:AES256-SHA no-sslv3
    http-response add-header Strict-Transport-Security max-age=0;\ includeSubDomains
    option http-server-close

    acl gunicorn_dead nbsrv(app_django) lt 1
    acl nginx_dead nbsrv(nginx) lt 1
    acl mx_mode nbsrv(maintenance) lt 1
    acl is_unread_count url_beg /reader/feed_unread_count
    acl is_refresh_feeds url_beg /reader/refresh_feed
    acl is_dashboard url_param(dashboard) -i true

    monitor-uri /status
    monitor fail if gunicorn_dead
    monitor fail if nginx_dead
    monitor fail if mx_mode

    # Redirect all HTTP traffic to HTTPS
    acl is_root path /
    redirect scheme https if is_root !{ ssl_fc }
    
    use_backend app_push if { hdr_end(host) -i push.newsblur.com }
    use_backend node_socket if { path_beg /v3/socket.io/ }
    use_backend node_favicon if { path_beg /rss_feeds/icon/ }
    use_backend node_text if { path_beg /rss_feeds/original_text_fetcher }
    use_backend node_images if { hdr_end(host) -i imageproxy.newsblur.com }
    use_backend node_images if { hdr_end(host) -i imageproxy2.newsblur.com }
    use_backend node_page if { path_beg /original_page/ }
    use_backend blog if { hdr_end(host) -i blog.newsblur.com }
    use_backend blog if { hdr_end(host) -i blog2.newsblur.com }
    use_backend nginx if { path_beg /media/ }
    use_backend nginx if { path_beg /static/ }
    use_backend nginx if { path_beg /favicon }
    use_backend nginx if { path_beg /crossdomain/ }
    use_backend nginx if { path_beg /robots }
    #use_backend self if { path_beg /munin/ }
    use_backend db_metrics if { hdr_end(host) -i metrics.newsblur.com }
    use_backend consul_manager if { hdr_end(host) -i consul.newsblur.com }
    use_backend nginx if mx_mode

    use_backend app_counts if is_unread_count
    use_backend app_refresh if is_refresh_feeds
    use_backend app_refresh if is_dashboard
    use_backend app_django unless gunicorn_dead || nginx_dead

backend nginx
    option httpchk GET /_nginxchk
    http-check expect rstatus 200|503
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.web %}
        server {{host}}-nginx {{host}}.node.nyc1.consul:80
    {% endfor %}

backend app_django
    option httpchk GET /_haproxychk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.django %}
        server {{host}} {{host}}.node.nyc1.consul:8000
    {% endfor %}

backend app_counts
    balance roundrobin
    option httpchk GET /_haproxychk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.counts %}
        server {{host}} {{host}}.node.nyc1.consul:8000
    {% endfor %}
    # server-template app-counts 1 _app-counts._tcp.service.nyc1.consul:8000 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    
backend app_refresh
    balance roundrobin
    option httpchk GET /_haproxychk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.refresh %}
        server {{host}} {{host}}.node.nyc1.consul:8000
    {% endfor %}
    # server-template app-refresh 1 _app-refresh._tcp.service.nyc1.consul:8000 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

backend app_push
    balance roundrobin
    option httpchk GET /_haproxychk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.push %}
        server {{host}} {{host}}.node.nyc1.consul:8000
    {% endfor %}
    # server-template app-push 1 _app-push._tcp.service.nyc1.consul:8000 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

backend blog
    balance roundrobin
    option httpchk GET /_nginxchk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.blogs %}
        server {{host}} {{host}}.node.nyc1.consul:80
    {% endfor %}

backend node_images
    option httpchk HEAD /sc,sN1megONJiGNy-CCvqzVPTv-TWRhgSKhFlf61XAYESl4=/http:/samuelclay.com/static/images/2019%20-%20Cuba.jpg
    http-check expect rstatus 200|301
    server-template node-images 1 _node-images._tcp.service.nyc1.consul:8088 check inter 2000ms resolvers consul resolve-opts allow-dup-ip

backend node_socket
    balance roundrobin
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.node_socket %}
        server {{host}} {{host}}.node.nyc1.consul:8008
    {% endfor %}

backend node_favicon
    http-check expect rstatus 200|503
    option httpchk GET /rss_feeds/icon/1
    balance roundrobin
    server-template node-favicons 1 _node-favicons._tcp.service.nyc1.consul:8008 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

backend node_text
    http-check expect rstatus 200|503
    option httpchk GET /rss_feeds/original_text_fetcher?test=1
    balance roundrobin
    server-template node-text 1 _node-text._tcp.service.nyc1.consul:8008 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

backend node_page
    http-check expect rstatus 200|503
    option httpchk GET /original_page/1?test=1
    balance roundrobin
    server-template node-page 1 _node-page._tcp.service.nyc1.consul:8008 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

backend postgres
    option httpchk GET /db_check/postgres
    server db-postgres db-postgres.node.nyc1.consul:5579 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

backend mongo
    option httpchk GET /db_check/mongo
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.mongo %}
        server {{host}} {{host}}.node.nyc1.consul:5579
    {% endfor %}

backend mongo_analytics
    option httpchk GET /db_check/mongo_analytics
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    {% for host in groups.mongo_analytics %}
        server {{host}} {{host}}.node.nyc1.consul:5579
    {% endfor %}

backend db_redis_user
    option httpchk GET /db_check/redis
    server db-redis-user db-redis-user.node.nyc1.consul:5579 check inter 2000ms resolvers consul resolve-opts allow-dup-ip init-addr none

backend db_redis_story
    option httpchk GET /db_check/redis_story
    server db-redis-story db-redis-story.node.nyc1.consul:5579 check inter 2000ms resolvers consul resolve-opts allow-dup-ip init-addr none

backend db_redis_sessions
    option httpchk GET /db_check/redis_sessions
    server db-redis-sessions db-redis-sessions.node.nyc1.consul:5579 check inter 2000ms resolvers consul resolve-opts allow-dup-ip init-addr none

backend db_redis_pubsub
    option httpchk GET /db_check/redis_pubsub
    server db-redis-pubsub db-redis-pubsub.node.nyc1.consul:5579 check inter 2000ms resolvers consul resolve-opts allow-dup-ip init-addr none

backend db_elasticsearch
    option httpchk GET /db_check/elasticsearch
    server elasticsearch db-elasticsearch.node.nyc1.consul:5579 check inter 2000ms resolvers consul resolve-opts allow-dup-ip init-addr none

backend db_metrics
    balance roundrobin
    # option httpchk GET /_haproxychk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    server grafana grafana.service.nyc1.consul:3000

backend consul_manager
    balance roundrobin
    # option httpchk GET /_haproxychk
    default-server check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none
    server consul_manager consul-manager.service.nyc1.consul:8500

backend maintenance
    option httpchk HEAD /maintenance
    http-check expect status 404
    http-check send-state
    server nginx app-django1.node.nyc1.consul:80 check inter 2000ms resolvers consul resolve-prefer ipv4 resolve-opts allow-dup-ip init-addr none

listen stats
bind :1936 ssl crt {{ ssl_certificate }}

stats enable
stats hide-version
stats realm Haproxy\ Statistics
stats uri /
stats auth gimmiestats:StatsGiver
stats refresh 15s