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---
######## role is fits for monitoring server and monitored nodes
# configure:
# munin
# munin-node
# nagios
# nrpe
########

## package installation
- name: debug commands
  shell:  yum --version ; yum list installed | grep -e '(nagios|nrpe)'
  register: yum_info
  ignore_errors: true

- name: debug output
  debug: msg="{{ yum_info }}"

- name: install monitoring agents and plugins
  yum: pkg={{ item }} state=latest update_cache=yes
  with_items:
   - munin-common
   - munin-node
   - nrpe
   - nagios-plugins
   - nagios-plugins-http
   - nagios-plugins-disk
   - nagios-plugins-load
   - nagios-plugins-procs
   - nagios-plugins-swap
   - nagios-plugins-users
   - nagios-plugins-mysql
   - perl-Cache-Memcached
   - net-tools
  tags: package
  when: "inventory_hostname != monitoring_server"

- name: install monitoring servers
  yum: pkg={{ item }} state=latest update_cache=yes
  with_items:
   - munin
   - munin-common
   - munin-node
   - nagios
   - nagios-plugins-nrpe
   - nagios-plugins-tcp
   - nagios-plugins-http
   - nagios-plugins-ping
   - nagios-plugins-ssh
   - nrpe
   - nagios-plugins
   - nagios-plugins-http
   - nagios-plugins-disk
   - nagios-plugins-load
   - nagios-plugins-procs
   - nagios-plugins-swap
   - nagios-plugins-users
   - nagios-plugins-mysql
   - perl-Cache-Memcached
   - net-tools
  tags: package
  when: "inventory_hostname == monitoring_server"

## create users
- name: create user for munin and munin-node services
  user: state=present system=yes name={{ munin_server_user }} 
    group={{ munin_server_group }}
    comment="{{ munin_server_user }} monitoring user"
  tags: users

- name: create user for nrpe service
  user: state=present system=yes name={{ nrpe_server_user }} 
    group={{ nrpe_server_group }}
    comment="{{ nrpe_server_user }} monitoring user"
  tags: users

- name: create user for nagios service
  user: state=present system=yes name={{ nagios_server_user }} 
    group={{ nagios_server_group }}
    comment="{{ nagios_server_user }} monitoring user"
  tags: users
  when: "'bitrix-mgmt' in group_names"

- name: update apache user
  user: state=present append=yes 
    groups={{ apache_group }} name={{ apache_user }}
  tags: users
  when: "'bitrix-mgmt' in group_names"

- name: set access rights for munin and munin-node service - log dir
  file: state=directory path={{ item }} 
    owner={{ munin_server_user }} 
    group={{ munin_server_group }} 
    mode=0775 recurse=yes
  with_items:
   - "{{ munin_server_logs_dir }}"
   - "{{ munin_client_logs_dir }}"
   - "{{ munin_server_data_dir }}"
   - "{{ munin_server_data_dir }}/{{ munin_plugins_state_dir }}"
   - "{{ munin_server_data_dir }}/{{ munin_graph_group }}"
  tags: dirs

- name: test if host folder existen on monitoring server
  shell: test -d "{{ munin_server_data_dir }}/{{ inventory_hostname }}" && echo "FolderExist" || echo "FolderNotExist"
  delegate_to: "{{ monitoring_server }}"
  tags: dirs
  register: host_dir_status
  ignore_errors: True

- name: move old content to new folder
  shell: rsync -a "{{ munin_server_data_dir }}/{{ inventory_hostname }}/" "{{ munin_server_data_dir }}/{{ munin_graph_group }}/"
  delegate_to: "{{ monitoring_server }}"
  tags: dirs
  when: "'FolderExist' in host_dir_status.stdout"

- name: delete old content
  file: path="{{ munin_server_data_dir }}/{{ inventory_hostname }}"
    state=absent
  delegate_to: "{{ monitoring_server }}"
  tags: dirs
  when: "'FolderExist' in host_dir_status.stdout"

- name: create symbolic link from group folder
  file: src="{{ munin_server_data_dir }}/{{ munin_graph_group }}"
    dest="{{ munin_server_data_dir }}/{{ inventory_hostname }}"
    state=link
  delegate_to: "{{ monitoring_server }}"
  tags: dirs

- name: set access rights for nrpe service
  file: state=directory path={{ nrpe_server_data_dir }} owner={{ nrpe_server_user }} group={{ nrpe_server_user }} mode=0775 recurse=yes
  tags: dirs

- name: set access rights for nagios service
  file: state=directory path={{ item }} 
    owner={{ nagios_server_user }} group={{ nagios_server_group }} mode=0775 recurse=yes
  tags: dirs
  with_items:
    - "{{ nagios_server_data_dir }}"
    - "{{ nagios_server_data_dir }}/checkresults"
  when: "'bitrix-mgmt' in group_names"

## configure munin-node ( monitoring agents )
- name: munin - create plugins directory
  file: path=/etc/munin/{{ item }} state=directory owner={{ munin_server_user }} group={{ munin_server_group }} mode=0775
  with_items:
    - plugins
    - plugin-conf.d
  tags: configure_monitor_agents

- name: munin - additional plugins for munin
  copy: src={{ item }} dest=/usr/share/munin/plugins/
    owner=root group=root mode=0755
  with_items:
   - process_status_
   - df_size
   - memcached_
  tags: configure_monitor_agents

- name: munin - enable munitoring plugins
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }} state=link
  with_items:
   - iostat
   - load
   - memory
   - netstat
   - open_files
   - processes
   - swap
   - threads
   - df_size
   - meminfo
  tags: configure_monitor_agents

- name: munin - create link for iface plugin
  file: src=/usr/share/munin/plugins/if_ dest=/etc/munin/plugins/if_{{ iface }} state=link
  tags: config_munin_node

- name: munin - enable munitoring plugins - db servers
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }} state=link
  with_items:
   - mysql_bytes
   - mysql_queries
   - mysql_slowqueries
   - mysql_threads
  tags: configure_monitor_agents
  when: "'bitrix-mysql' in group_names"

- name: munin - enable munitoring plugins - db servers - bitrix plugins
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }}mysqld state=link
  with_items:
   - process_status_
  tags: configure_monitor_agents
  when: "'bitrix-mysql' in group_names"

- name: copy apache status config to httpd dir
  template: src=bx_apache_status.conf.j2 dest=/etc/httpd/bx/conf/bx_apache_status.conf
    owner=bitrix group=root mode=0644
  tags: configure_monitor_agents
  when: "'bitrix-web' in group_names"
  notify: restart httpd

- name: copy nginx status config to nginx dir
  template: src=nginx_server_status.conf.j2 
    dest=/etc/nginx/bx/site_avaliable/nginx_server_status.conf
    owner=bitrix group=root mode=0644
  tags: configure_monitor_agents
  when: "'bitrix-web' in group_names"

- name: enable nginx status for server
  file: src=/etc/nginx/bx/site_avaliable/nginx_server_status.conf 
    dest=/etc/nginx/bx/site_enabled/nginx_server_status.conf
    state=link
  tags: configure_monitor_agents
  when: "'bitrix-web' in group_names"
  notify: restart nginx

- name: munin - enable munitoring plugins - httpd servers
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }} state=link
  with_items:
   - apache_accesses
   - apache_processes
   - apache_volume
   - nginx_request
   - nginx_status
  tags: configure_monitor_agents
  when: "'bitrix-web' in group_names"

- name: munin - enable munitoring plugins - httpd servers - bitrix plugins
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }}httpd state=link
  with_items:
   - process_status_
  tags: configure_monitor_agents
  when: "'bitrix-web' in group_names"

- name: munin - enable munitoring plugins - httpd servers - bitrix plugins
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }}nginx state=link
  with_items:
   - process_status_
  tags: configure_monitor_agents
  when: "'bitrix-web' in group_names"

- name: munin - enable munitoring plugins - memcached servers - bitrix plugins
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }}memcached state=link
  with_items:
   - process_status_
  tags: configure_monitor_agents
  when: "'bitrix-memcached' in group_names"

- name: munin - enable munitoring plugins - memcached service - instance monitoring
  file: src=/usr/share/munin/plugins/memcached_ dest=/etc/munin/plugins/memcached_{{ item }} state=link
  with_items:
   - bytes
   - counters
   - rates
  tags: configure_monitor_agents
  when: "'bitrix-memcached' in group_names"

- name: munin - enable munitoring plugins - serachd servers - bitrix plugins
  file: src=/usr/share/munin/plugins/{{ item }} dest=/etc/munin/plugins/{{ item }}searchd state=link
  with_items:
   - process_status_
  tags: configure_monitor_agents
  when: "'bitrix-searchd' in group_names"

- name: munin - bitrix configuration for plugins
  template: src=plugin-conf.d/{{ item }}.j2 dest=/etc/munin/plugin-conf.d/{{ item }} 
    owner={{ munin_server_user }} group={{ munin_server_group }} mode=0664
  with_items:
    - bx
  tags: configure_monitor_agents

- name: munin - additional configs for plugins
  copy: src=plugin-conf.d/{{ item }} dest=/etc/munin/plugin-conf.d/{{ item }} owner={{ munin_server_user }} group={{ munin_server_group }} mode=0664
  with_items:
   - df
   - fw_
   - hddtemp_smartctl
   - munin-node
   - postfix
   - sendmail
  tags: configure_monitor_agents

- name: Create munin-tmpfiles config 
  copy:
    src: munin.conf
    dest: /etc/tmpfiles.d/munin.conf
  when: inventory_hostname == monitoring_server
    and ansible_distribution == "CentOS"
    and ansible_distribution_major_version == "7"

- name: Re-run systemd-tmpfiles
  shell: systemd-tmpfiles --create /etc/tmpfiles.d/munin.conf
  when: inventory_hostname == monitoring_server
    and ansible_distribution == "CentOS"
    and ansible_distribution_major_version == "7"

- name: munin - disable munin crontab for client nodes
  copy: src=crond_munin_disable dest=/etc/cron.d/munin
  tags: configure_monitor_agents
  when: "'bitrix-mgmt' not in group_names"

- name: munin - create agent configuration file
  template: src=munin-node.conf.j2  dest=/etc/munin/munin-node.conf owner={{ munin_server_user }} group={{ munin_server_group }} mode=0664
  tags: config_munin_node

- name: munin - ensure service started in system
  service: name=munin-node state=started enabled=yes
  tags: service

- name: munin - restart munin-node
  service: name=munin-node state=restarted 
  tags: service

### configuration nrpe agents
# Nagios Remote Plugin Executor
- name: nrpe - create additional config directory
  file: path={{ nrpe_server_include_dir }} state=directory
  tags: configure_monitor_agents

- name: nrpe - create nrpe config
  template: src=nrpe.cfg.j2 dest=/etc/nagios/nrpe.cfg
  tags: configure_monitor_agents

- name: nrpe - ensure service started in system
  service: name=nrpe state=started enabled=yes
  tags: service

- name: nrpe - restart nrpe
  service: name=nrpe state=restarted
  tags: service


### configure munin server ( monitoring server )
# munin master is responsible for gathering data from munin nodes
- name: munin-master - create munin-master config
  template: src=munin.conf.j2 dest=/etc/munin/munin.conf 
    owner={{ munin_server_user }} group={{ munin_server_group }} mode=0664
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: munin-master - create directory for additional configs
  file: path=/etc/munin/conf.d state=directory 
    owner={{ munin_server_user }} group={{ munin_server_group }} mode=0775
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: munin-master - add all hosts from default group on monitoring
  template: src=munin-hosts.conf.j2 dest=/etc/munin/conf.d/munin-hosts.conf
    owner={{ munin_server_user }} group={{ munin_server_group }} mode=0664
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

### nagios monitoring server
# Nagios offers monitoring and alerting services for servers, switches, applications, and services.
- name: nagios - create config
  template:  src=nagios.cfg.j2 dest=/etc/nagios/nagios.cfg
    owner={{ nagios_server_user }} group={{ nagios_server_group }}
    mode=0640
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: nagios - create bitrix-pool directory
  file: path={{ nagios_server_include_dir }} 
    state=directory 
    owner={{ nagios_server_user }} group={{ nagios_server_group }} 
    mode=0750 
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: nagios - replace default localhost file
  template: src=nagios-localhost.cfg.j2 
    dest=/etc/nagios/objects/localhost.cfg 
    owner={{ nagios_server_user }} group={{ nagios_server_group }} 
    mode=0644
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: nagios - create conf.d directory
  file:
    path: "/etc/nagios/conf.d"
    state: directory
    owner: "{{ nagios_server_user }}"
    group: "{{ nagios_server_group }}"
  when: "'bitrix-mgmt' in group_names"

- name: nagios - create commands and default tests definitions 
  template: src=nagios-{{ item }}.j2 
    dest=/etc/nagios/conf.d/{{ item }} 
    owner={{ nagios_server_user }} group={{ nagios_server_group }} 
    mode=0644
  with_items:
    - check_nrpe_commands.cfg
    - default_tests_for_servers.cfg
    - email_commands.cfg
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: nagios - define variables
  set_fact:
    nagios_ip: "{{ bx_netaddr }}"
    nagios_alias: "{{ inventory_hostname }}"
    nagios_host: "{{ bx_host|default(inventory_hostname) }}"
  tags: facts

- name: nagios - create hosts configuration
  delegate_to: 127.0.0.1
  template: src=nagios-host.cfg.j2 
    dest={{ nagios_server_include_dir }}/{{ nagios_alias }}.cfg 
    owner={{ nagios_server_user }} group={{ nagios_server_group }} mode=0644
  tags: configure_monitor_servers

- name: nagios - configure contacts
  template: src=contacts.cfg.j2
    dest=/etc/nagios/objects/contacts.cfg
    owner={{ nagios_server_user  }} group={{ nagios_server_group  }}
    mode=0644
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: nagios - configure web interface
  template: src=cgi.cfg.j2
    dest=/etc/nagios/cgi.cfg
    owner={{ nagios_server_user  }} group={{ nagios_server_group  }}
    mode=0644
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

- name: nagios - change access for config
  file: path=/etc/nagios
    state=directory
    owner={{ nagios_server_user }} group={{ nagios_server_group }} 
    recurse=yes
  tags: configure_monitor_servers

- name: nagios - change access for log files
  file: path={{ nagios_server_log_dir }}
    state=directory
    owner={{ nagios_server_user }} group={{ nagios_server_group }} 
  tags: configure_monitor_servers

- name: nagios - configure msmtp
  template: src=nagios-msmtprc.j2
    dest={{ nagios_msmtp_config }}
    owner={{ nagios_server_user  }} group={{ nagios_server_group  }}
    mode=0600 
  tags: configure_monitor_servers
  when: "monitoring_status == 'enable' and 'bitrix-mgmt' in group_names"

- name: nagios - ensure service started
  service: name=nagios state=started enabled=yes
  tags: service
  when: "'bitrix-mgmt' in group_names"

- name: nagios - restart service
  service: name=nagios state=restarted
  tags: configure_monitor_servers
  when: "'bitrix-mgmt' in group_names"

### http access on monitoring server for 
# munin
# nagios
- name: munin-master - remove existen login from httpasswd file
  htpasswd: path={{ munin_server_htpasswd }} 
    name={{ munin_server_login }}
    owner=root group=bitrix mode=0640 state=absent
  tags: configure_basic_access
  when: "'bitrix-mgmt' in group_names"

- name: munin-master - add login to httpasswd file
  htpasswd: path={{ munin_server_htpasswd }} 
    name={{ munin_server_login }} password={{ munin_server_password|string }}
    owner=root group=bitrix mode=0640 state=present create=yes
  tags: configure_basic_access
  when: "'bitrix-mgmt' in group_names"

- name: nagios - remove existen login from httpasswd file
  htpasswd: path={{ nagios_server_htpasswd }} 
    name={{ nagios_server_login }}
    owner=root group=bitrix mode=0640 state=absent
  tags: configure_basic_access
  when: "'bitrix-mgmt' in group_names"

- name: nagios - add login to httpasswd file
  htpasswd: path={{ nagios_server_htpasswd }} 
    name={{ nagios_server_login }} password={{ nagios_server_password|string }} 
    owner=root group=bitrix mode=0640 state=present create=yes
  tags: configure_basic_access
  when: "'bitrix-mgmt' in group_names"

- name: apache - create config for monitoring locations
  template: src=apache-nagios.conf.j2 dest=/etc/httpd/bx/conf/nagios.conf
  tags: configure_web_service
  when: "'bitrix-mgmt' in group_names"

- name: apache - restart
  service: name=httpd state=restarted
  tags: configure_web_service
  when: "'bitrix-mgmt' in group_names"

- name: nginx - create config for monitoring locations
  template: src=nginx_server_monitor.conf.j2 dest=/etc/nginx/bx/conf/server_monitor.conf
  tags: configure_web_service
  when: "'bitrix-mgmt' in group_names"

- name: nginx - enable monitor config
  file: dest=/etc/nginx/bx/server_monitor.conf src=/etc/nginx/bx/conf/server_monitor.conf state=link force=yes
  tags: configure_web_service
  when: "'bitrix-mgmt' in group_names"

- name: nginx - restart service
  service: name=nginx state=restarted
  tags: configure_web_service
  when: "'bitrix-mgmt' in group_names"

# group_vars: bitrix-hosts
- name: update group variables
  delegate_to: "{{ cluster_web_server }}"
  bx_conf: group=hosts state=update 
    monitoring_status=enable nagios_server_login={{ nagios_server_login }}
    nagios_server_password={{ nagios_server_password }}
    munin_server_login={{ munin_server_login }}
    munin_server_password={{ munin_server_password }}
  when: "'bitrix-mgmt' in group_names"
  tags: ansible_hosts

- name: update group variables for email settings
  delegate_to: "{{ cluster_web_server }}"
  bx_conf: group=hosts state=update 
    notify_nagios={{ notify_nagios }}
    monitor_email={{ monitor_email }}
  when: "notify_nagios is defined and notify_nagios and 'bitrix-mgmt' in group_names"
  tags: ansible_hosts

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