Please note that the original design goal of this role was more concerned with the initial installation and bootstrapping environment, which currently does not involve performing continuous maintenance, and therefore are only suitable for testing and development purposes, should not be used in production environments. The author does not guarantee the accuracy, completeness, reliability, and availability of the role content. Under no circumstances will the author be held responsible or liable in any way for any claims, damages, losses, expenses, costs or liabilities whatsoever, including, without limitation, any direct or indirect damages for loss of profits, business interruption or loss of information.
请注意，此角色的最初设计目标更关注初始安装和引导环境，目前不涉及执行连续维护，因此仅适用于测试和开发目的，不应在生产环境中使用。作者不对角色内容之准确性、完整性、可靠性、可用性做保证。在任何情况下，作者均不对任何索赔，损害，损失，费用，成本或负债承担任何责任，包括但不限于因利润损失，业务中断或信息丢失而造成的任何直接或间接损害。
Table of Contents
- Overview
- Requirements
- Role variables
- Dependencies
- Example Playbook
- License
- Author Information
- Donations
This Ansible role installs HaProxy on linux operating system, including establishing a filesystem structure and server configuration with some common operational features.The keepalived daemon can be used to monitor services or systems and to automatically failover to a standby if problems occur. Keepalived will configure a floating IP address that can be moved between three capable load balancers. These will each be configured to split traffic between backend web servers. If the primary load balancer goes down, the floating IP will be moved to the second load balancer automatically, keep the service availability.
This role will work on the following operating systems:
- CentOS 7, 8
The following list of supported the haproxy releases:
- 2.x
There are some variables in defaults/main.yml which can (Or needs to) be overridden:
haproxy_version: Specify the HaProxy version.
haproxy_port_arg.haproxy_exporter: HaProxy Exporter network communication port.haproxy_port_arg.keepalived_exporter: Keepalived exporter network communication port.haproxy_port_arg.stats: The HaProxy stats page port.
haproxy_syslog_server: Defines the address list of a syslog server.haproxy_syslog_port: Defines the input port of a syslog server for access log.
haproxy_keepalived_dept: A boolean value, whether provides High-Availability.haproxy_keepalived_vip: Virtual IP address.
haproxy_arg.maxconn: The maximum per-process number of concurrent connections.haproxy_arg.retries: The number of retries to perform on a server after a connection failure.haproxy_arg.timeout_http_request: The maximum allowed time to wait for a complete HTTP request.haproxy_arg.timeout_queue: The maximum time to wait in the queue for a connection slot to be free.haproxy_arg.timeout_connect: The maximum time to wait for a connection attempt to a server to succeed.haproxy_arg.timeout_client: The inactivity timeout on the client side for half-closed connections.haproxy_arg.timeout_server: The maximum inactivity time on the server side.haproxy_arg.timeout_client_fin: The inactivity timeout applies when the client is shut down.haproxy_arg.timeout_tunnel: Set the maximum inactivity time on the client and server side for tunnels.haproxy_arg.timeout_http_keep_alive: The maximum allowed time to wait for a new HTTP request to appear.haproxy_arg.timeout_check: Global Check timeout.haproxy_arg.options: Global Server options.
haproxy_proxy_args: Essential configuration sections.
environments: Define the service environment.datacenter: Define the DataCenter.domain: Define the Domain.customer: Define the customer name.tags: Define the service custom label.exporter_is_install: Whether to install prometheus exporter.consul_public_register: Whether register a exporter service with public consul client.consul_public_exporter_token: Public Consul client ACL token.consul_public_http_prot: The consul Hypertext Transfer Protocol.consul_public_clients: List of public consul clients.consul_public_http_port: The consul HTTP API port.
There are some variables in vars/main.yml:
- Ansible versions >= 2.8
- Python >= 2.7.5
See tests/inventory for an example.
node01 ansible_host='192.168.1.10' haproxy_version='28'
Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
- hosts: all
roles:
- role: ansible-role-linux-haproxy
haproxy_version: '28'
You can also use the group_vars or the host_vars files for setting the variables needed for this role. File you should change: group_vars/all or host_vars/group_name
haproxy_version: '28'
haproxy_port_arg:
haproxy_exporter: '9101'
keepalived_exporter: '9650'
stats: '10089'
haproxy_syslog_server:
- '127.0.0.1'
haproxy_syslog_port: '1514'
haproxy_keepalived_dept: true
haproxy_keepalived_vip: '10.10.10.10'
haproxy_arg:
maxconn: '4000'
retries: '3'
timeout_http_request: '10s'
timeout_queue: '10s'
timeout_connect: '10s'
timeout_client: '30s'
timeout_server: '30s'
timeout_tunnel: '30s'
timeout_client_fin: '30s'
timeout_http_keep_alive: '10s'
timeout_check: '10s'
options:
- 'httplog'
- 'dontlognull'
- 'http-server-close'
- 'forwardfor except 127.0.0.0/8'
- 'redispatch'
haproxy_proxy_args:
- name: 'k8s-api'
port: '16443'
syntax:
- "frontend k8s-api"
- " bind 0.0.0.0:16443"
- " mode tcp"
- " option tcplog"
- " default_backend k8s-api"
- "backend k8s-api"
- " mode tcp"
- " option tcp-check"
- " balance roundrobin"
- " default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100"
- " server k8s-api-1 10.10.10.11:6443 check"
- " server k8s-api-2 10.10.10.12:6443 check"
- " server k8s-api-3 10.10.10.13:6443 check"
environments: 'prd'
datacenter: 'dc01'
domain: 'local'
customer: 'demo'
tags:
subscription: 'default'
owner: 'nobody'
department: 'Infrastructure'
organization: 'The Company'
region: 'China'
exporter_is_install: true
consul_public_register: true
consul_public_exporter_token: '00000000-0000-0000-0000-000000000000'
consul_public_http_prot: 'https'
consul_public_http_port: '8500'
consul_public_clients:
- '127.0.0.1'
Please send your suggestions to make this role better.
Please donate to the following monero address.
46CHVMbb6wQV2PJYEbahb353SYGqXhcdFQVEWdCnHb6JaR5125h3kNQ6bcqLye5G7UF7qz6xL9qHLDSAY3baagfmLZABz75
