- block:
    - name: Checking system requirements,if current CPU has support for SSE 4.2
      shell: lscpu |grep sse4_2 | wc -l
      register: check_cpu_out
      
    - name: Checking system requirements result
      fail:
        msg: "Running ClickHouse on processors that do not support SSE 4.2 or have AArch64 or PowerPC64LE architecture."
      when: check_cpu_out.stdout < '1'

    - name: Check the Zookeeper status
      shell: netstat -anlp | egrep "2181" | grep LISTEN | wc -l
      register: port_out
      delegate_to: '{{ groups.zookeeper[0] }}'
    
    - name: To terminate execution
      fail:
       msg: "Port 2181 of the zookeeper node is not monitored. The status may be abnormal"
      run_once: true
      delegate_to: 127.0.0.1
      when: port_out.stdout != '1'


- name: Getting readonly key sha256
  shell: echo -n "{{ clickhouse_query_pin }}"|sha256sum | tr -d '-' | sed -e 's/^[ ]*//g' | sed -e 's/[ ]*$//g'
  register: readonly_key_out

- name: Setting readonly_key_sha variable
  set_fact: readonly_key_sha="{{readonly_key_out.stdout}}"

- name: Getting root key sha256
  shell: echo -n "{{ clickhouse_default_pin }}"|sha256sum| tr -d '-' | sed -e 's/^[ ]*//g' | sed -e 's/[ ]*$//g'
  register: root_key_out

- name: Setting root_key_sha variable
  set_fact: root_key_sha="{{root_key_out.stdout}}"
    
- name: Creating ClickHouse install path
  file:
    state: directory
    path: '{{ deploy_dir }}/{{ item.path }}'
  with_items:
    - { path: 'clickhouse/clickhouse-server' }  
    - { path: 'clickhouse/rpm' }
    - { path: 'clickhouse/logs' }
    - { path: 'clickhouse/monitor' }
    
- name: Copying ClickHouse config files
  template: 
    src: '{{ item.src }}'
    dest: '{{ item.dest }}'
    mode: 0755
    force: true
  with_items:
    - { src: 'clickhouse-server.j2', dest: '{{ deploy_dir }}/clickhouse/clickhouse-server/clickhouse-server' }
    - { src: 'clickhouse-server.j2', dest: '/etc/init.d/clickhouse-server' }
    - { src: 'ck_monitor.sh.j2', dest: '{{ deploy_dir }}/clickhouse/monitor/ck_monitor.sh' }
    
- name: Copying ClickHouse configuration files to {{ deploy_dir }}/clickhouse/clickhouse-server/
  template: 
    src: '{{ item.src }}'
    dest: '{{ item.dest }}'
    force: true
  with_items:
    - { src: 'config.xml.j2', dest: '{{ deploy_dir }}/clickhouse/clickhouse-server/config.xml' }
    - { src: 'users.xml.j2', dest: '{{ deploy_dir }}/clickhouse/clickhouse-server/users.xml' }
    - { src: 'docker-compose_exporter.yml.j2', dest: '{{ deploy_dir }}/clickhouse/monitor/docker-compose.yml' }

- name: Copying ClickHouse config files
  template:
    src: 'metrika_query.xml.j2'
    dest: '{{ deploy_dir }}/clickhouse/clickhouse-server/metrika.xml'
    force: true
  when: inventory_hostname in groups['clickhouse'][:2]    
     
- name: Copying ClickHouse config files
  template:
    src: 'metrika_data.xml.j2'
    dest: '{{ deploy_dir }}/clickhouse/clickhouse-server/metrika.xml'
    force: true
  when: inventory_hostname not in groups['clickhouse'][:2]        
    
- name: Modify clickhouse process limits
  shell: if [ `cat /etc/security/limits.d/20-nproc.conf | grep clickhouse | wc -l` -eq "0" ];then echo "clickhouse       soft    nproc     65535" >> /etc/security/limits.d/20-nproc.conf ;fi

#复制tar到目标服务器
- name: Copying clickhouse rpm files
  copy: 
    src: 'files/{{ item.file }}'
    dest: '{{ deploy_dir }}/clickhouse/rpm/'
    force: true
  with_items:
    - { file: 'clickhouse-client-21.8.13.1.altinitystable-2.noarch.rpm' }
    - { file: 'clickhouse-common-static-21.8.13.1.altinitystable-2.x86_64.rpm' }
    - { file: 'clickhouse-server-21.8.13.1.altinitystable-2.noarch.rpm' }

    
- name: Installing Data nodes Clickhouse
  shell: "if [ `rpm -qa | grep {{ item.file }} | wc -l` -eq '0' ]; then rpm -ivh --nodeps {{ deploy_dir }}/clickhouse/rpm/{{ item.file }} ; fi"
  with_items:
    - { file: 'clickhouse-client-21.8.13.1.altinitystable-2.noarch.rpm' }
    - { file: 'clickhouse-common-static-21.8.13.1.altinitystable-2.x86_64.rpm' }
    - { file: 'clickhouse-server-21.8.13.1.altinitystable-2.noarch.rpm' }
  ignore_errors: true

- name: Ansible delete new version clickhouse start shell
  file:
    path: "{{ item.filename }}"
    state: absent
  with_items:
    - { filename: '/etc/systemd/system/clickhouse-server.service' }
    - { filename: '/usr/lib/systemd/system/clickhouse-server.service' }
    - { filename: '/etc/clickhouse-server' }

- name: enable clickhouse bootstrap
  shell: chkconfig --add clickhouse-server && chkconfig clickhouse-server on && service clickhouse-server start

- name: Copying clickhouse_exporter-2.0.tar
  copy:
    src: 'files/clickhouse_exporter-2.0.tar'
    dest: '{{ deploy_dir }}/clickhouse/monitor/'
    force: true    
  notify:
    - Loading Exporter Image
    - Start Exporter Container

- name: Adding a cron -> Check Clickhouse up to node_exporter
  cron: 
    name: 'Check Clickhouse up to node_exporter'
    minute: "*/5"
    job: '{{ deploy_dir }}/clickhouse/monitor/ck_monitor.sh'
    user: root