尝试启动redis服务，启动redis服务失败开始安装redis并创建redis集群

---

- name: check redis service

shell: "ps -ef|grep redis|grep -v grep|awk '{print $2}'"

register: redis_process_result

- name: try to start redis service

shell: "/var/redis/{{redis.package_name}}/{{redis.cluster.port1}}/bin/redis-server /var/redis/{{redis.package_name}}/{{redis.cluster.port1}}/config/redis.conf &&

/var/redis/{{redis.package_name}}/{{redis.cluster.port2}}/bin/redis-server /var/redis/{{redis.package_name}}/{{redis.cluster.port2}}/config/redis.conf"

ignore_errors: true

register: redis_start_process

when: redis_process_result.stdout_lines==[]

- fail:

msg: "try to start redis fail, start setup redis later"

register: redis_setup

ignore_errors: true

when: redis_start_process is not skip and redis_start_process is failure

- name: setup redis

block:

- name: copy packages

copy:

src: "{{copy_path}}/{{redis.package_name}}.tar"

dest: "/var/redis/"

owner: root

group: root

mode: 0755

ignore_errors: yes

- name: unzip redis package

shell: cd /var/redis && tar -xvf {{redis.package_name}}.tar

- name: copy redis.conf

template:

src: "{{ item.src }}"

dest: "{{ item.dest }}"

backup: yes

with_items:

- { src: 'redis_1.conf.j2', dest: '/var/redis/{{redis.package_name}}/{{redis.cluster.port1}}/config/redis.conf' }

- { src: 'redis_2.conf.j2', dest: '/var/redis/{{redis.package_name}}/{{redis.cluster.port2}}/config/redis.conf' }

- name: copy redis service

template: src=redis.service.j2 dest=/usr/lib/systemd/system/redis.service

- name: enable redis service

shell: systemctl enable redis

- name: start redis service

shell: service redis start

- name: check cluster info

shell: /var/redis/{{redis.package_name}}/{{redis.cluster.port1}}/bin/redis-cli -h {{redis.redis_cli_addr}} -p {{redis.cluster.port1}} -a {{redis.password}} cluster info 2>/dev/null |grep "cluster_state"

register: redis_cluster_info

- name: create redis cluster

shell: yes yes | /var/redis/{{redis.package_name}}/{{redis.cluster.port1}}/bin/redis-cli --cluster create {{redis.cluster.addr1}}:{{redis.cluster.port1}} {{redis.cluster.addr2}}:{{redis.cluster.port1}}

{{redis.cluster.addr3}}:{{redis.cluster.port1}} {{redis.cluster.addr3}}:{{redis.cluster.port2}} {{redis.cluster.addr1}}:{{redis.cluster.port2}} {{redis.cluster.addr2}}:{{redis.cluster.port2}} --cluster-replicas 1 -a {{redis.password}}

ignore_errors: yes

when: "'fail' in redis_cluster_info.stdout"

- name: clean install package

shell: rm -f /var/redis/{{redis.package_name}}.tar

rescue:

- name:

shell: "echo setup end"

when: redis_setup is not skip

可以通过以下命令进行redis集群部署

ansible-playbook -i hosts playbook/redis.yml --tag install