简介:
当下有许多的运维自动化工具( 配置管理 ),例如:Ansible、SaltStack、Puppet、Fabric 等。
Ansible 一种集成 IT 系统的配置管理、应用部署、执行特定任务的开源平台,是 AnsibleWorks 公司名下的项目,该公司由 Cobbler 及 Func 的作者于 2012 年创建成立。
Ansible 基于 Python 语言实现,由 Paramiko 和 PyYAML 两个关键模块构建。
Ansible 特点:
>> 部署简单,只需在主控端部署 Ansible 环境,被控端无需做任何操作。
>> 默认使用 SSH(Secure Shell)协议对设备进行管理。
>> 主从集中化管理。
>> 配置简单、功能强大、扩展性强。
>> 支持 API 及自定义模块,可通过 Python 轻松扩展。
>> 通过 Playbooks 来定制强大的配置、状态管理。
>> 对云计算平台、大数据都有很好的支持。
>> 提供一个功能强大、操作性强的 Web 管理界面和 REST API 接口 ---- AWX 平台。
Ansible 与 SaltStack
>> 最大的区别是 Ansible 无需在被监控主机部署任何客户端代理,默认通过 SSH 通道进行远程命令执行或下发配置。
>> 相同点是都具备功能强大、灵活的系统管理、状态配置,都使用 YAML 格式来描述配置,两者都提供丰富的模板及 API,对云计算平台、大数据都有很好的支持。
一、安装 Ansible
yum -y install ansible
二、配置 Ansible
ls /etc/ansible # ansible.cfg 是 Ansible 工具的配置文件; #hosts 用来配置被管理的机器; #roles 是一个目录,playbook 将使用它ansible.cfg hosts roles
1、Ansible 管理机与被管理机做秘钥认证
ssh-keygen # 生成秘钥 Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Created directory '/root/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: ea:11:72:ea:d2:d1:fa:1c:e0:df:4f:b0:98:31:be:fe root@localhost.localdomain The key's randomart image is: +--[ RSA 2048]----+ | | | | | | | | | o.= S | | ..*.B o | | .ooB . . | | ..o+ = . | | ..oB.E.. | +-----------------+ ssh-copy-id -i ~/.ssh/id_rsa.pub "-p 22 root@192.168.10.228" # 将公钥写入被管理机 The authenticity of host '192.168.12.129 (192.168.12.129)' can't be established. RSA key fingerprint is f0:9e:01:73:a4:bf:14:10:ac:46:a9:48:cd:c5:d8:1c. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.12.129' (RSA) to the list of known hosts. root@192.168.12.129's password: Now try logging into the machine, with "ssh '-p 22 root@192.168.12.129'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting.
2、hosts 文件添加被管理机
vim /etc/ansible/hosts [Client] 192.168.10.228
三、测试 Ansible
ansible Client -m ping # 操作 Client 组 ( all 为操作 hosts 文件中所有主机 ),-m 指定执行 ping 模块,下面是返回结果 192.168.12.129 | SUCCESS => { "changed": false, "ping": "pong" } # -i 指定 hosts 文件位置 # -u username 指定 SSH 连接的用户名 # -k 指定远程用户密码 # -f 指定并发数 # -s 如需要 root 权限执行时使用 ( 连接用户不是 root 时 ) # -K -s 时,-K 输入 root 密码
四、附加
1、/etc/ansible/hosts 文件
## Ansible 定义主机、组规则的配置文件
vim /etc/ansible/hosts www.abc.com # 定义域名 192.168.1.100 # 定义 IP 192.168.1.150:37268 # 指定端口号 [WebServer] # 定义分组 192.168.1.10 192.168.1.20 192.168.1.30 [DBServer] # 定义多个分组 192.168.1.50 192.168.1.60 Monitor ansible_ssh_port=12378 ansible_ssh_host=192.168.1.200 # 定义别名 # ansible_ssh_host 连接目标主机的地址 # ansible_ssh_port 连接目标主机的端口,默认 22 时无需指定 # ansible_ssh_user 连接目标主机默认用户 # ansible_ssh_pass 连接目标主机默认用户密码 # ansible_ssh_connection 目标主机连接类型,可以是 local 、ssh 或 paramiko # ansible_ssh_private_key_file 连接目标主机的 ssh 私钥 # ansible_*_interpreter 指定采用非 Python 的其他脚本语言,如 Ruby 、Perl 或其他类似 ansible_python_interpreter 解释器 [webservers] # 主机名支持正则描述 www[01:50].example.com [dbservers] db-[a:f].example.com
2、Ansible 常用模块学习
ansible-doc -l # 列出 Ansible 支持的模块 ansible-doc ping # 查看该模块帮助信息
远程命令模块( command / script / shell )
command 作为 Ansible 的默认模块,可以运行远程权限范围所有的 shell 命令,不支持管道符。 shell > ansible Client -m command -a "free -m" # 查看 Client 分组主机内存使用情况 script 的功能是在远程主机执行主控端存储的 shell 脚本文件,相当于 scp + shell 组合。 ansible Client -m script -a "/home/test.sh 12 34" # 远程执行本地脚本 shell 的功能是执行远程主机上的 shell 脚本文件,支持管道符。 ansible Client -m shell -a "/home/test.sh" # 执行远程脚本 copy 模块(实现主控端向目标主机拷贝文件,类似于 scp 功能) ansible Client -m copy -a "src=/home/test.sh desc=/tmp/ owner=root group=root mode=0755"
# 向 Client 组中主机拷贝 test.sh 到 /tmp 下,属主、组为 root ,权限为 0755 stat 模块(获取远程文件状态信息,atime/ctime/mtime/md5/uid/gid 等信息) ansible Client -m stat -a "path=/etc/syctl.conf" get_url 模块(实现在远程主机下载指定 URL 到本地,支持 sha256sum 文件校验) ansible Client -m get_utl -a "url=http://www.baidu.com dest=/tmp/index.html mode=0440 force=yes" yum 模块(软件包管理) ansible Client -m yum -a "name=curl state=latest" cron 模块(远程主机 crontab 配置) ansible Client -m cron -a "name='check dirs' hour='5,2' job='ls -alh > /dev/null'" 效果: #Ansible: check dirs * 5,2 * * * ls -alh > /dev/null mount 模块(远程主机分区挂载) ansible Client -m mount -a "name=/mnt/data src=/dev/sd0 fstype=ext4 opts=ro state=present" service 模块(远程主机系统服务管理) ansible Client -m service -a "name=nginx state=stoped" ansible Client -m service -a "name=nginx state=restarted" ansible Client -m service -a "name=nginx state=reloaded" user 服务模块(远程主机用户管理) ansible Client -m user -a "name=wang comment='user wang'" ansible Client -m user -a "name=wang state=absent remove=yes" # 添加删除用户
五、Ansible-playbook
# 使用 Ansible-playbook 可以完成一组复杂的动作,例如部署环境、搭建服务、修改配置等。
vim /etc/ansible/playbook.yml # 将远程主机IP地址写入文件中保存 --- - hosts: Client remote_user: root tasks: - name: Save IP To info.txt shell: "ifconfig eth0 | awk -F '[ :]'+ '/inet addr/{print $4}' > ~/info.txt" # hosts 指定执行操作主机 # remote_user 指定执行用户 # tasks 指明有哪些动作 # name 动作描述 # shell 模块,后面为具体指令
Playbook 实战:
一、目录结构
cd /etc/ansible/ ; tree . . ├── ansible.cfg ├── delete_zabbix_agent.yml ├── hosts ├── install_zabbix_agent.yml └── roles ├── delete_zabbix_agent │ ├── tasks │ │ └── main.yml │ └── vars │ └── main.yml └── install_zabbix_agent ├── files │ └── zabbix-2.4.5.tar.gz ├── tasks │ └── main.yml ├── templates │ ├── zabbix_agentd │ └── zabbix_agentd.conf └── vars └── main.yml ## ansible.cfg 此文件为 ansible 的主配置文件 ## hosts 用于定义主机组 ## roles 定义不同的角色 ## install_zabbix_agent.yml 用于安装 zabbix_agent 的引导文件 ## delete_zabbix_agent.yml 删除已安装的 zabbix_agent 的引导文件 └── install_zabbix_agent ├── files │ └── zabbix-2.4.5.tar.gz ├── tasks │ └── main.yml ├── templates │ ├── zabbix_agentd │ └── zabbix_agentd.conf └── vars └── main.yml ## 其中,install_zabbix_agent 为一个角色,用于安装 zabbix_agent ## file 目录:用于存放将要拷贝到远程主机的安装包等 ## tasks 目录:将要执行的所有任务,如果比较复杂,可以单独定义不同的任务,最后在 main.yml 文件中引用即可 ## templates 目录:模板目录,这里存放着一些可变的文件,即:每台主机上的这些文件中的内容都不完全相同 ## vars 目录:用于存放变量 ## 这是一个比较简单的结构,其实一个角色中还可以有 meta 、handlers 等
二、Playbook 安装软件需要的步骤
1、定义 hosts( 给哪些主机安装软件 )
vim /etc/ansible/hosts [mini] 129.139.153.78:16283 155.139.190.94:12573
2、定义入口文件 install_zabbix_agent.yml
vim /etc/ansible/install_zabbix_agent.yml --- - hosts: mini roles: - install_zabbix_agent ## 可以看到将要安装的主机组为 mini 组,角色为 install_zabbix_agent
3、定义角色 install_zabbix_agent
tree /etc/ansible/roles/install_zabbix_agent/ ├── files │ └── zabbix-2.4.5.tar.gz ├── tasks │ └── main.yml ├── templates │ ├── zabbix_agentd │ └── zabbix_agentd.conf └── vars └── main.yml ## 建立 files 目录,存放编译安装过的 zabbix_agent 目录的压缩文件,用于拷贝到远程主机 ## 建立 tasks 目录,用于编写将要执行的任务 ## 建立 templates 目录,用于存放可变的模板文件 ## 建立 vars 目录,用于存放变量信息
cat /etc/ansible/roles/install_zabbix_agent/tasks/main.yml --- - name: Install Software yum: name={{ item }} state=latest with_items: - libcurl-devel - name: Create Zabbix User user: name={{ zabbix_user }} state=present createhome=no shell=/sbin/nologin - name: Copy Zabbix.tar.gz copy: src=zabbix-{{ zabbix_version }}.tar.gz dest={{ zabbix_dir }}/src/zabbix-{{ zabbix_version }}.tar.gz owner=root group=root - name: Uncompression Zabbix.tar.gz shell: tar zxf {{ zabbix_dir }}/src/zabbix-{{ zabbix_version }}.tar.gz -C {{ zabbix_dir }}/ - name: Copy Zabbix Start Script template: src=zabbix_agentd dest=/etc/init.d/zabbix_agentd owner=root group=root mode=0755 - name: Copy Zabbix Config File template: src=zabbix_agentd.conf dest={{ zabbix_dir }}/zabbix/etc/zabbix_agentd.conf owner={{ zabbix_user }} group={{ zabbix_user }} mode=0644 - name: Modify Zabbix Dir Permisson file: path={{ zabbix_dir }}/zabbix owner={{ zabbix_user }} group={{ zabbix_user }} mode=0755 recurse=yes - name: Start Zabbix Service shell: /etc/init.d/zabbix_agentd start - name: Add Boot Start Zabbix Service shell: chkconfig --level 35 zabbix_agentd on
cat /etc/ansible/roles/install_zabbix_agent/vars/main.yml zabbix_dir: /usr/local zabbix_version: 2.4.5 zabbix_user: zabbix zabbix_port: 10050 zabbix_server_ip: 131.142.101.120
cat /etc/ansible/roles/install_zabbix_agent/templates/zabbix_agentd #!/bin/bash # # chkconfig: - 90 10 # description: Starts and stops Zabbix Agent using chkconfig # Tested on Fedora Core 2 - 5 # Should work on all Fedora Core versions # # @name: zabbix_agentd # @author: Alexander Hagenah <hagenah@topconcepts.com> # @created: 18.04.2006 # # Modified for Zabbix 2.0.0 # May 2012, Zabbix SIA # # Source function library. . /etc/init.d/functions # Variables # Edit these to match your system settings # Zabbix-Directory BASEDIR={{ zabbix_dir }}/zabbix # Binary File BINARY_NAME=zabbix_agentd # Full Binary File Call FULLPATH=$BASEDIR/sbin/$BINARY_NAME # PID file PIDFILE=/tmp/$BINARY_NAME.pid # Establish args ERROR=0 STOPPING=0 # # No need to edit the things below # # application checking status if [ -f $PIDFILE ] && [ -s $PIDFILE ] then PID=`cat $PIDFILE` if [ "x$PID" != "x" ] && kill -0 $PID 2>/dev/null && [ $BINARY_NAME == `ps -e | grep $PID | awk '{print $4}'` ] then STATUS="$BINARY_NAME (pid `pidof $APP`) running.." RUNNING=1 else rm -f $PIDFILE STATUS="$BINARY_NAME (pid file existed ($PID) and now removed) not running.." RUNNING=0 fi else if [ `ps -e | grep $BINARY_NAME | head -1 | awk '{ print $1 }'` ] then STATUS="$BINARY_NAME (pid `pidof $APP`, but no pid file) running.." else STATUS="$BINARY_NAME (no pid file) not running" fi RUNNING=0 fi # functions start() { if [ $RUNNING -eq 1 ] then echo "$0 $ARG: $BINARY_NAME (pid $PID) already running" else action $"Starting $BINARY_NAME: " $FULLPATH touch /var/lock/subsys/$BINARY_NAME fi } stop() { echo -n $"Shutting down $BINARY_NAME: " killproc $BINARY_NAME RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$BINARY_NAME RUNNING=0 } # logic case "$1" in start) start ;; stop) stop ;; status) status $BINARY_NAME ;; restart) stop sleep 10 start ;; help|*) echo $"Usage: $0 {start|stop|status|restart|help}" cat <<EOF start - start $BINARY_NAME stop - stop $BINARY_NAME status - show current status of $BINARY_NAME restart - restart $BINARY_NAME if running by sending a SIGHUP or start if not running help - this screen EOF exit 1 ;; esac exit 0
cat /etc/ansible/roles/install_zabbix_agent/templates/zabbix_agentd.conf # This is a config file for the Zabbix agent daemon (Unix) # To get more information about Zabbix, visit http://www.zabbix.com ############ GENERAL PARAMETERS ################# ### Option: PidFile # Name of PID file. # # Mandatory: no # Default: # PidFile=/tmp/zabbix_agentd.pid ### Option: LogFile # Name of log file. # If not set, syslog is used. # # Mandatory: no # Default: # LogFile= LogFile=/tmp/zabbix_agentd.log ### Option: LogFileSize # Maximum size of log file in MB. # 0 - disable automatic log rotation. # # Mandatory: no # Range: 0-1024 # Default: # LogFileSize=1 ### Option: DebugLevel # Specifies debug level # 0 - basic information about starting and stopping of Zabbix processes # 1 - critical information # 2 - error information # 3 - warnings # 4 - for debugging (produces lots of information) # # Mandatory: no # Range: 0-4 # Default: # DebugLevel=3 ### Option: SourceIP # Source IP address for outgoing connections. # # Mandatory: no # Default: # SourceIP= ### Option: EnableRemoteCommands # Whether remote commands from Zabbix server are allowed. # 0 - not allowed # 1 - allowed # # Mandatory: no # Default: # EnableRemoteCommands=0 ### Option: LogRemoteCommands # Enable logging of executed shell commands as warnings. # 0 - disabled # 1 - enabled # # Mandatory: no # Default: # LogRemoteCommands=0 ##### Passive checks related ### Option: Server # List of comma delimited IP addresses (or hostnames) of Zabbix servers. # Incoming connections will be accepted only from the hosts listed here. # If IPv6 support is enabled then '127.0.0.1', '::127.0.0.1', '::ffff:127.0.0.1' are treated equally. # # Mandatory: no # Default: # Server= Server={{ zabbix_server_ip }} ### Option: ListenPort # Agent will listen on this port for connections from the server. # # Mandatory: no # Range: 1024-32767 # Default: # ListenPort=10050 ListenPort={{ zabbix_port }} ### Option: ListenIP # List of comma delimited IP addresses that the agent should listen on. # First IP address is sent to Zabbix server if connecting to it to retrieve list of active checks. # # Mandatory: no # Default: # ListenIP=0.0.0.0 ### Option: StartAgents # Number of pre-forked instances of zabbix_agentd that process passive checks. # If set to 0, disables passive checks and the agent will not listen on any TCP port. # # Mandatory: no # Range: 0-100 # Default: # StartAgents=3 ##### Active checks related ### Option: ServerActive # List of comma delimited IP:port (or hostname:port) pairs of Zabbix servers for active checks. # If port is not specified, default port is used. # IPv6 addresses must be enclosed in square brackets if port for that host is specified. # If port is not specified, square brackets for IPv6 addresses are optional. # If this parameter is not specified, active checks are disabled. # Example: ServerActive=127.0.0.1:20051,zabbix.domain,[::1]:30051,::1,[12fc::1] # # Mandatory: no # Default: # ServerActive= #ServerActive=127.0.0.1:10051 ### Option: Hostname # Unique, case sensitive hostname. # Required for active checks and must match hostname as configured on the server. # Value is acquired from HostnameItem if undefined. # # Mandatory: no # Default: # Hostname= Hostname={{ ansible_all_ipv4_addresses[1] }} ### Option: HostnameItem # Item used for generating Hostname if it is undefined. Ignored if Hostname is defined. # Does not support UserParameters or aliases. # # Mandatory: no # Default: # HostnameItem=system.hostname ### Option: HostMetadata # Optional parameter that defines host metadata. # Host metadata is used at host auto-registration process. # An agent will issue an error and not start if the value is over limit of 255 characters. # If not defined, value will be acquired from HostMetadataItem. # # Mandatory: no # Range: 0-255 characters # Default: # HostMetadata= ### Option: HostMetadataItem # Optional parameter that defines an item used for getting host metadata. # Host metadata is used at host auto-registration process. # During an auto-registration request an agent will log a warning message if # the value returned by specified item is over limit of 255 characters. # This option is only used when HostMetadata is not defined. # # Mandatory: no # Default: # HostMetadataItem= ### Option: RefreshActiveChecks # How often list of active checks is refreshed, in seconds. # # Mandatory: no # Range: 60-3600 # Default: # RefreshActiveChecks=120 ### Option: BufferSend # Do not keep data longer than N seconds in buffer. # # Mandatory: no # Range: 1-3600 # Default: # BufferSend=5 ### Option: BufferSize # Maximum number of values in a memory buffer. The agent will send # all collected data to Zabbix Server or Proxy if the buffer is full. # # Mandatory: no # Range: 2-65535 # Default: # BufferSize=100 ### Option: MaxLinesPerSecond # Maximum number of new lines the agent will send per second to Zabbix Server # or Proxy processing 'log' and 'logrt' active checks. # The provided value will be overridden by the parameter 'maxlines', # provided in 'log' or 'logrt' item keys. # # Mandatory: no # Range: 1-1000 # Default: # MaxLinesPerSecond=100 ############ ADVANCED PARAMETERS ################# ### Option: Alias # Sets an alias for an item key. It can be used to substitute long and complex item key with a smaller and simpler one. # Multiple Alias parameters may be present. Multiple parameters with the same Alias key are not allowed. # Different Alias keys may reference the same item key. # For example, to retrieve the ID of user 'zabbix': # Alias=zabbix.userid:vfs.file.regexp[/etc/passwd,^zabbix:.:([0-9]+),,,,1] # Now shorthand key zabbix.userid may be used to retrieve data. # Aliases can be used in HostMetadataItem but not in HostnameItem parameters. # # Mandatory: no # Range: # Default: ### Option: Timeout # Spend no more than Timeout seconds on processing # # Mandatory: no # Range: 1-30 # Default: Timeout=20 ### Option: AllowRoot # Allow the agent to run as 'root'. If disabled and the agent is started by 'root', the agent # will try to switch to the user specified by the User configuration option instead. # Has no effect if started under a regular user. # 0 - do not allow # 1 - allow # # Mandatory: no # Default: # AllowRoot=0 ### Option: User # Drop privileges to a specific, existing user on the system. # Only has effect if run as 'root' and AllowRoot is disabled. # # Mandatory: no # Default: # User=zabbix ### Option: Include # You may include individual files or all files in a directory in the configuration file. # Installing Zabbix will create include directory in /usr/local/etc, unless modified during the compile time. # # Mandatory: no # Default: # Include= # Include=/usr/local/etc/zabbix_agentd.userparams.conf # Include=/usr/local/etc/zabbix_agentd.conf.d/ # Include=/usr/local/etc/zabbix_agentd.conf.d/*.conf ####### USER-DEFINED MONITORED PARAMETERS ####### ### Option: UnsafeUserParameters # Allow all characters to be passed in arguments to user-defined parameters. # 0 - do not allow # 1 - allow # # Mandatory: no # Range: 0-1 # Default: UnsafeUserParameters=1 ### Option: UserParameter # User-defined parameter to monitor. There can be several user-defined parameters. # Format: UserParameter=<key>,<shell command> # See 'zabbix_agentd' directory for examples. # # Mandatory: no # Default: # UserParameter= ####### LOADABLE MODULES ####### ### Option: LoadModulePath # Full path to location of agent modules. # Default depends on compilation options. # # Mandatory: no # Default: # LoadModulePath=${libdir}/modules ### Option: LoadModule # Module to load at agent startup. Modules are used to extend functionality of the agent. # Format: LoadModule=<module.so> # The modules must be located in directory specified by LoadModulePath. # It is allowed to include multiple LoadModule parameters. # # Mandatory: no # Default: # LoadModule=
4、执行安装
ansible-playbook /etc/ansible/install_zabbix_agent.yml PLAY [mini] ******************************************************************* GATHERING FACTS *************************************************************** ok: [129.139.153.78] ok: [155.139.190.94] TASK: [install_zabbix_agent | Install Software] ******************************* changed: [155.139.190.94] => (item=libcurl-devel) changed: [129.139.153.78] => (item=libcurl-devel) TASK: [install_zabbix_agent | Create Zabbix User] ***************************** changed: [129.139.153.78] changed: [155.139.190.94] TASK: [install_zabbix_agent | Copy Zabbix.tar.gz] ***************************** changed: [129.139.153.78] changed: [155.139.190.94] TASK: [install_zabbix_agent | Uncompression Zabbix.tar.gz] ******************** changed: [129.139.153.78] changed: [155.139.190.94] TASK: [install_zabbix_agent | Copy Zabbix Start Script] *********************** changed: [155.139.190.94] changed: [129.139.153.78] TASK: [install_zabbix_agent | Copy Zabbix Config File] ************************ changed: [129.139.153.78] changed: [155.139.190.94] TASK: [install_zabbix_agent | Modify Zabbix Dir Permisson] ******************** changed: [155.139.190.94] changed: [129.139.153.78] TASK: [install_zabbix_agent | Start Zabbix Service] *************************** changed: [129.139.153.78] changed: [155.139.190.94] TASK: [install_zabbix_agent | Add Boot Start Zabbix Service] ****************** changed: [129.139.153.78] changed: [155.139.190.94] PLAY RECAP ******************************************************************** 155.139.190.94 : ok=10 changed=9 unreachable=0 failed=0 129.139.153.78 : ok=10 changed=9 unreachable=0 failed=0 ## 关注一下,启动脚本跟配置文件中变量的引用。 ## 完成安装,可以去客户机检查效果了 !
附上:delete_zabbix_agent.yml 相关内容
vim /etc/ansible/delete_zabbix_agent.yml --- - hosts: mini roles: - delete_zabbix_agent shell > vim /etc/ansible/roles/delete_zabbix_agent/tasks/main.yml --- - name: Stop Zabbix_agent shell: pgrep zabbix_agentd | xargs kill ignore_errors: yes - name: Delete Boot Start shell: chkconfig --del zabbix_agentd - name: Delete Start Script shell: rm -rf /etc/init.d/zabbix_agentd - name: Delete Install Dir shell: rm -rf {{ zabbix_dir }}/zabbix - name: Delete Software shell: rm -rf {{ zabbix_dir }}/src/zabbix-{{ zabbix_version }}.tar.gz - name: Delete Log File shell: rm -rf /tmp/zabbix_agentd.log - name: Delete Zabbix User user: name={{ zabbix_user }} state=absent remove=yes vim /etc/ansible/roles/delete_zabbix_agent/vars/main.yml zabbix_dir: /usr/local zabbix_version: 2.4.5 zabbix_user: zabbix