169 lines
6 KiB
Markdown
169 lines
6 KiB
Markdown
# Ansible Role: HAProxy
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Install and configure HAProxy load balancer with flexible frontends, backends, and stats.
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## Variables
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### Global Settings
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| Variable | Required | Default | Description |
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|----------|----------|---------|-------------|
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| `haproxy_global.log` | No | `/dev/log local2` | Log target |
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| `haproxy_global.chroot` | No | `/var/lib/haproxy` | Chroot directory |
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| `haproxy_global.pidfile` | No | `/var/run/haproxy.pid` | PID file location |
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| `haproxy_global.maxconn` | No | `35000` | Maximum connections |
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| `haproxy_global.user` | No | `haproxy` | User to run as |
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| `haproxy_global.group` | No | `haproxy` | Group to run as |
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| `haproxy_global.daemon` | No | `true` | Run as daemon |
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| `haproxy_global.stats_socket` | No | See defaults | Stats socket configuration |
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### Default Settings
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| Variable | Required | Default | Description |
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|----------|----------|---------|-------------|
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| `haproxy_defaults.log` | No | `global` | Log setting |
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| `haproxy_defaults.mode` | No | `tcp` | Default mode (tcp/http) |
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| `haproxy_defaults.option` | No | `tcplog` | Default option |
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| `haproxy_defaults.timeout_check` | No | `5s` | Health check timeout |
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| `haproxy_defaults.timeout_connect` | No | `10s` | Connection timeout |
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| `haproxy_defaults.timeout_client` | No | `600s` | Client timeout |
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| `haproxy_defaults.timeout_server` | No | `600s` | Server timeout |
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### Stats Listener
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| Variable | Required | Default | Description |
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|----------|----------|---------|-------------|
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| `haproxy_stats.enabled` | No | `false` | Enable stats interface |
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| `haproxy_stats.bind` | No | `10.120.32.10:9000` | Bind address for stats |
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| `haproxy_stats.mode` | No | `http` | Stats mode |
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| `haproxy_stats.uri` | No | `/` | Stats URI path |
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| `haproxy_stats.show_node` | No | `true` | Show node name |
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| `haproxy_stats.refresh` | No | `10s` | Refresh interval |
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| `haproxy_stats.auth` | No | `admin:password` | Basic auth credentials |
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### Frontends
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| Variable | Required | Default | Description |
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|----------|----------|---------|-------------|
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| `haproxy_frontends` | No | `[]` | List of frontends |
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| `haproxy_frontends[].name` | Yes | - | Frontend name |
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| `haproxy_frontends[].bind` | Yes | - | Bind address and port |
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| `haproxy_frontends[].default_backend` | Yes | - | Default backend name |
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| `haproxy_frontends[].mode` | No | - | Override default mode |
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| `haproxy_frontends[].options` | No | `[]` | Additional options |
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### Backends
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| Variable | Required | Default | Description |
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|----------|----------|---------|-------------|
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| `haproxy_backends` | No | `[]` | List of backends |
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| `haproxy_backends[].name` | Yes | - | Backend name |
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| `haproxy_backends[].balance` | No | - | Load balancing algorithm |
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| `haproxy_backends[].hash_type` | No | - | Hash type for balancing |
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| `haproxy_backends[].mode` | No | - | Override default mode |
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| `haproxy_backends[].stick_table` | No | - | Stick table configuration |
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| `haproxy_backends[].acls` | No | `[]` | List of ACL rules |
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| `haproxy_backends[].tcp_request` | No | `[]` | TCP request rules |
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| `haproxy_backends[].tcp_response` | No | `[]` | TCP response rules |
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| `haproxy_backends[].stick` | No | `[]` | Stick rules |
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| `haproxy_backends[].options` | No | `[]` | Additional options |
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| `haproxy_backends[].servers` | Yes | - | List of backend servers |
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| `haproxy_backends[].servers[].name` | Yes | - | Server name |
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| `haproxy_backends[].servers[].address` | Yes | - | Server address:port |
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| `haproxy_backends[].servers[].check` | No | `false` | Enable health checks |
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| `haproxy_backends[].servers[].send_proxy` | No | `false` | Enable send-proxy |
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| `haproxy_backends[].servers[].extra_params` | No | - | Additional server parameters |
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## Full Example
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```yaml
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---
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# Example playbook using role-haproxy
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- name: "Deploy HAProxy Load Balancer"
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hosts: "haproxy_servers"
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become: true
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vars:
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# enable stats interface
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haproxy_stats:
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enabled: true
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bind: "10.120.32.10:9000"
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mode: "http"
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uri: "/"
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show_node: true
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refresh: "10s"
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auth: "admitcreation:gZ4hWWeMWy7Bd8"
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# frontends
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haproxy_frontends:
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# http frontend
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- name: "http-in"
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bind: "10.120.32.15:80"
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default_backend: "waf_itcreation_tools_http"
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# https frontend
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- name: "https-in"
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bind: "10.120.32.15:443"
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default_backend: "waf_itcreation_tools_https"
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# backends
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haproxy_backends:
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# http backend with simple load balancing
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- name: "waf_itcreation_tools_http"
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balance: "source"
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hash_type: "consistent"
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options:
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- "option httpchk GET /health"
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servers:
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# waf0.itcreation.tools
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- name: "waf0.itcreation.tools"
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address: "10.120.32.20:80"
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check: true
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send_proxy: true
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# waf1.itcreation.tools
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- name: "waf1.itcreation.tools"
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address: "10.120.32.21:80"
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check: true
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send_proxy: true
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# https backend with SSL session persistence
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- name: "waf_itcreation_tools_https"
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balance: "roundrobin"
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stick_table: "type binary len 2048 size 300k expire 30m"
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acls:
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- "clienthello req.ssl_hello_type 1"
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- "serverhello res.ssl_hello_type 2"
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tcp_request:
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- "inspect-delay 10s"
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- "content accept if clienthello"
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tcp_response:
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- "content accept if serverhello"
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stick:
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- "on req.payload_lv(43,1) if clienthello"
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- "store-response res.payload_lv(43,1) if serverhello"
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options:
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- "option httpchk GET /health"
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servers:
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# waf0.itcreation.tools
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- name: "waf0.itcreation.tools"
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address: "10.120.32.20:443"
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send_proxy: true
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check: true
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extra_params: "check-ssl verify none"
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# waf0.itcreation.tools
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- name: "waf1.itcreation.tools"
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address: "10.120.32.21:443"
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send_proxy: true
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check: true
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extra_params: "check-ssl verify none"
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roles:
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- "role-haproxy"
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```
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