Ambari简介
Ambari概述
Apache Ambari是一种基于Web的工具，支持Apache Hadoop集群的创建、管理和监控。Ambari已支持大多数Hadoop组件，包括HDFS、MapReduce、Hive、Pig、 Hbase、Zookeeper、Sqoop和Hcatalog等；除此之外，Ambari还支持Spark、Storm等计算框架及资源调度平台YARN。
Apache Ambari 从集群节点和服务收集大量信息，并把它们表现为容易使用的，集中化的接口：Ambari Web.
Ambari Web显示诸如服务特定的摘要、图表以及警报信息。可通过Ambari Web对Hadoop集群进行创建、管理、监视、添加主机、更新服务配置等；也可以利用Ambari Web执行集群管理任务，例如启用 Kerberos 安全以及执行Stack升级。任何用户都可以查看Ambari Web特性。拥有administrator-level 角色的用户可以访问比 operator-level 或 view-only 的用户能访问的更多选项。例如，Ambari administrator 可以管理集群安全，一个 operator 用户可以监控集群，而 view-only 用户只能访问系统管理员授予他的必要的权限。
Ambari体系结构
Ambari 自身也是一个分布式架构的软件，主要由两部分组成：Ambari Server 和 Ambari Agent。简单来说，用户通过Ambari Server通知 Ambari Agent 安装对应的软件；Agent 会定时地发送各个机器每个软件模块的状态给 Ambari Server，最终这些状态信息会呈现在 Ambari 的 GUI，方便用户了解到集群的各种状态，并进行相应的维护。
Ambari Server 从整个集群上收集信息。每个主机上都有 Ambari Agent, Ambari Server 通过 Ambari Agent 控制每部主机。
Ambari安装
http://doc.ailinux.net/docs/data/data-1ardi0l817b5q[[1]][1]
安装准备阶段：
本文介绍ambari安装及常用大数据组件安装配置等
HDP版本兼容性
CentOS 7 Python 2.7.x JDK1.8+ Mariadb 5.5 Ambari2.6.1.5 HDP 2.6.4
查看一下地址获取软件版本兼容性支持
https://supportmatrix.hortonworks.com/
由于严格依赖版本，所以要先确定安装的版本。
系统初始化
更新yum源
yum install -y wget wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo yum clean all yum makecache
修改主机名
sudo hostnamectl set-hostname test-bg-xx sudo hostname test-bg-xx
修改时区：
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
同步集群时间
yum install –y ntp ntpdate -u cn.pool.ntp.org 或： ntpdate time1.aliyun.com ### 硬件时间和系统时间同步: clock -w 配置自动同步:/etc/crontab写入 */1 * * * * root ntpdate -u cn.pool.ntp.org >> /dev/null 2>&1
关闭防火墙和selinux
#关闭防火墙 systemctl stop firewalld systemctl disable firewalld #关闭selinux 修改配置 sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux 临时关闭 setenforce 0
配置免密钥登录
为了让Ambari服务器在所有集群主机上自动安装Ambari代理，您必须在Ambari服务器主机和集群中的所有其他主机之间设置无密码SSH连接。Ambari服务器主机使用SSH公钥认证来远程访问和安装Ambari代理 ssh-keygen -t rsa ssh-copy-id -i ~/.ssh/id_rsa.pub root@node1 ssh-copy-id -i ~/.ssh/id_rsa.pub root@node2 ssh-copy-id -i ~/.ssh/id_rsa.pub root@node3 注意：您可以选择在每个集群主机上手动安装Ambari代理。在这种情况下，您不需要生成和分发SSH密钥 可以使用非root SSH帐户，如果该帐户可以执行sudo而不输入密码 # #如果ssh端口不是默认，可以在.ssh下创建config文件,修改文件权限 配置如下: touch config chmod 600 config [jt_ops@test-bg-m01 .ssh]$ cat config Host test-bg-m01 HostName test-bg-m01 User jt_ops Port xx Host test-bg-w01 HostName test-bg-w01 User jt_ops Port xx 也可以修改/etc/sshd/ssh_config配置文件中的端口
系统初始化参数
cat >> /etc/sysctl.conf << EOF fs.file-max=1000000 net.ipv4.tcp_max_tw_buckets = 6000 net.ipv4.tcp_sack = 1 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_rmem = 4096 87380 4194304 net.ipv4.tcp_wmem = 4096 16384 4194304 net.ipv4.tcp_max_syn_backlog = 16384 net.core.netdev_max_backlog = 32768 net.core.somaxconn = 32768 net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_timestamps = 1 net.ipv4.tcp_fin_timeout = 20 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 2 net.ipv4.tcp_syncookies = 1 #net.ipv4.tcp_tw_len = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_mem = 94500000 915000000 927000000 net.ipv4.tcp_max_orphans = 3276800 net.ipv4.ip_local_port_range = 1024 65000 net.nf_conntrack_max = 6553500 net.netfilter.nf_conntrack_max = 6553500 net.netfilter.nf_conntrack_tcp_timeout_close_wait = 60 net.netfilter.nf_conntrack_tcp_timeout_fin_wait = 120 net.netfilter.nf_conntrack_tcp_timeout_time_wait = 120 net.netfilter.nf_conntrack_tcp_timeout_established = 3600 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 kernel.numa_balancing = 0 kernel.shmmax = 68719476736 kernel.printk = 5 kernel.sysrq = 1 vm.overcommit_memory = 0 vm.swappiness = 0 EOF
文件描述符和用户最大进程数
### 调整文件描述符 cat >> /etc/security/limits.conf <<EOF * soft nproc 65535 * hard nproc 65535 * soft nofile 65535 * hard nofile 65535 EOF ##用户进程限制 cat >> /etc/security/limits.d/20-nproc.conf <<EOF * soft nproc 8192 root soft nproc unlimited EOF
安装
安装有两种方法：
在线安装和搭建本地yum源仓库安装
在线安装
下载yum源配置文件repo
#如果做了免秘钥登陆，则只需要在主节点下载yum源 ```javascript sudo wget -nv http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.6.1.5/ambari.repo -O /etc/yum.repos.d/ambari.repo sudo wget –nv http://public-repo-1.hortonworks.com/HDP/centos7/2.x/updates/2.6.4.0/hdp.repo -O /etc/yum.repos.d/hdp.rep sudo wget -nv http://public-repo-1.hortonworks.com/HDP-GPL/centos7/2.x/updates/2.6.4.0/hdp.gpl.repo -O /etc/yum.repos.d/hdp.gpl.repo
离线安装
制作本地源
制作本地镜像源安装HDP，可以在主节点或者单独的一台服务器（建议）
选择一台可以访问internet的服务器配置本地源
apache httpd
提供离线仓库的下载服务
#安装apache
yum install httpd –y
下载软件源
在httpd网站根目录,默认是即/var/www/html/，创建目录ambari，
并且将下载的压缩包解压到/var/www/html/ambari目录
cd /var/www/html/
mkdir ambari
cd /var/www/html/ambari/
http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.6.1.5/ambari-2.6.1.5-centos7.tar.gz
http://public-repo-1.hortonworks.com/HDP/centos6/2.x/updates/2.6.4.0/HDP-2.6.4.0-centos6-rpm.tar.gz
http://public-repo-1.hortonworks.com/HDP-UTILS-1.1.0.22/repos/centos6/HDP-UTILS-1.1.0.22-centos6.tar.gz
http://public-repo-1.hortonworks.com/HDP-GPL/centos6/2.x/updates/2.6.4.0/HDP-GPL-2.6.4.0-centos6-rpm.tar.gz
解压下载的tar包
[root@dev-bg-m01 html]# cd /var/www/html/
[root@dev-bg-m01 html]# pwd
/var/www/html
[root@dev-bg-m01 html]#
[root@dev-bg-m01 html]# tree -L 2 ambari/
ambari/
├── ambari
│ └── centos7
├── HDP
│ └── centos7
├── HDP-GPL
│ └── centos7
└── HDP-UTILS-1.1.0.22
├── hdp-utils.repo
├── openblas
├── repodata
├── RPM-GPG-KEY
└── snappy
11 directories, 1 file
[root@dev-bg-m01 html]#
编辑ambari yum源文件
[root@dev-bg-m01 yum.repos.d]# cat ambari.repo #VERSION_NUMBER=2.6.1.5-3 [ambari-2.6.1.5] name=ambari Version - ambari-2.6.1.5 baseurl=http://192.168.103.3/ambari/ambari/centos7/2.6.1.5-3/ gpgcheck=1 gpgkey=http://192.168.103.3/ambari/ambari/centos7/2.6.1.5-3/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins enabled=1 priority=1 [root@dev-bg-m01 yum.repos.d]# [root@dev-bg-m01 yum.repos.d]# cat hdp.repo #VERSION_NUMBER=2.6.4.0-91 [HDP-2.6.4.0] name=HDP Version - HDP-2.6.4.0 baseurl=http://192.168.103.3/ambari/HDP/centos7/2.6.4.0-91/ gpgcheck=1 gpgkey=http://192.168.103.3/ambari/HDP/centos7/2.6.4.0-91/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins enabled=1 priority=1 [HDP-UTILS-1.1.0.22] name=HDP-UTILS Version - HDP-UTILS-1.1.0.22 baseurl=http://192.168.103.3/ambari/HDP-UTILS-1.1.0.22/ gpgcheck=1 gpgkey=http://192.168.103.3/ambari/HDP-UTILS-1.1.0.22/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins enabled=1 priority=1 [root@dev-bg-m01 yum.repos.d]# [root@dev-bg-m01 yum.repos.d]# cat hdp.gpl.repo [HDP-2.6-GPL-repo-1] name=HDP-2.6-GPL-repo-1 baseurl=http://192.168.103.3/ambari/HDP-GPL/centos7/2.6.4.0-91/ gpgkey=http://192.168.103.3/ambari/HDP-GPL/centos7/2.6.4.0-91/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins path=/ enabled=1 gpgcheck=0 [root@dev-bg-m01 yum.repos.d]# 更新yum 元数据 yum clean all yum makecache yum repolist
安装Ambari-server
在主节点安装ambari-server sudo yum install -y ambari-server
配置Ambari-server
配置mysql连接器 由于ambari要访问数据库，所以要添加lib包，请自行去mysql官网下载 sudo mkdir -p /usr/share/java sudo cp /opt/mysql-connector-java-5.1.47/mysql-connector-java-5.1.47-bin.jar /usr/share/java/ 在ambari-server配置文件中添加mysql lib包路径地址 执行一下命令配置jdbc环境 ambari-server setup --jdbc-db=mysql --jdbc-driver=/usr/share/java/mysql-connector-java-5.1.47-bin.jar vim /etc/ambari-server/conf/ambari.properties ###在jdbc区下面找个位置添加如下如下语句 server.jdbc.driver.path=/usr/share/java/mysql-connector-java-5.1.47-bin.jar 检查环境并配置 执行以下命令 sudo ambari-server setup 按提示操作 会检查selinux，是否自定义用户，检查防火墙，设置JDK路径，数据库配置等，按提示操作即可 具体操作如下： ```javascript [root@dev-bg-m01 opt]# vim /etc/ambari-server/conf/ambari.properties [root@dev-bg-m01 opt]# ambari-server setup --jdbc-db=mysql --jdbc-driver=/usr/share/java/mysql-connector-java-5.1.47-bin.jar Using python /usr/bin/python Setup ambari-server Copying /usr/share/java/mysql-connector-java-5.1.47-bin.jar to /var/lib/ambari-server/resources If you are updating existing jdbc driver jar for mysql with mysql-connector-java-5.1.47-bin.jar. Please remove the old driver jar, from all hosts. Restarting services that need the driver, will automatically copy the new jar to the hosts. JDBC driver was successfully initialized. Ambari Server 'setup' completed successfully. [root@dev-bg-m01 opt]# vim /etc/ambari-server/conf/ambari.properties [root@dev-bg-m01 opt]# ambari-server setup Using python /usr/bin/python Setup ambari-server Checking SELinux... SELinux status is 'disabled' Customize user account for ambari-server daemon [y/n] (n)? y Enter user account for ambari-server daemon (root):ambari Adjusting ambari-server permissions and ownership... Checking firewall status... Checking JDK... Do you want to change Oracle JDK [y/n] (n)? y [1] Oracle JDK 1.8 + Java Cryptography Extension (JCE) Policy Files 8 [2] Oracle JDK 1.7 + Java Cryptography Extension (JCE) Policy Files 7 [3] Custom JDK ============================================================================== Enter choice (1): 3 WARNING: JDK must be installed on all hosts and JAVA_HOME must be valid on all hosts. WARNING: JCE Policy files are required for configuring Kerberos security. If you plan to use Kerberos,please make sure JCE Unlimited Strength Jurisdiction Policy Files are valid on all hosts. Path to JAVA_HOME: /opt/jdk1.8.0_161 Validating JDK on Ambari Server...done. Checking GPL software agreement... Completing setup... Configuring database... Enter advanced database configuration [y/n] (n)? y Configuring database... ============================================================================== Choose one of the following options: [1] - PostgreSQL (Embedded) [2] - Oracle [3] - MySQL / MariaDB [4] - PostgreSQL [5] - Microsoft SQL Server (Tech Preview) [6] - SQL Anywhere [7] - BDB ========================================== Enter choice (1): 3 Hostname (localhost): 192.168.103.3 Port (3306): Database name (ambari): Username (ambari): Enter Database Password (bigdata): Re-enter password: Configuring ambari database... Configuring remote database connection properties... WARNING: Before starting Ambari Server, you must run the following DDL against the database to create the schema: /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql Proceed with configuring remote database connection properties [y/n] (y)? n WARNING: Remote database setup aborted. Ambari Server 'setup' completed with warnings. [root@dev-bg-m01 opt]#
将Ambari数据库脚本导入到数据库
mysql -uambari -pxxx use ambari; source /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql 启动ambari server ambari-server start 在浏览器中访问ip:8080，默认登录名：admin 密码:admin
spark配置
由于spark要访问数据库，所以要添加mysql lib包 cp /opt/mysql-connector-java-5.1.47/mysql-connector-java-5.1.47-bin.jar /usr/hdp/2.6.4.0-91/spark/lib/
安装数据库
使用现有数据库或者自己安装
创建ambari和hive库 create database ambari character set utf8 ; 添加权限 GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' IDENTIFIED BY 'ambari'; FLUSH PRIVILEGES; 删除权限： revoke all privileges on ambari.* from ambari@'%';
程序安装目录
程序默认安装目录 [root@test-bg-m01 2.6.4.0-91]# pwd /usr/hdp/2.6.4.0-91 [root@test-bg-m01 2.6.4.0-91]# ls atlas hadoop hadoop-mapreduce hbase hive2 kafka pig ranger-hdfs-plugin ranger-kafka-plugin ranger-yarn-plugin spark storm tez usr etc hadoop-hdfs hadoop-yarn hive hive-hcatalog livy ranger-hbase-plugin ranger-hive-plugin ranger-storm-plugin slider spark2 storm-slider-client tez_hive2 zookeeper [root@test-bg-m01 2.6.4.0-91]# PID目录 /var/run/ 日志目录 /var/logs/ 一般修改log目录，在安装大数据组件的时候，修改配置文件即可。
删除服务
先停止服务 Service Actions > Delete Service yum remove xx https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.1.5/bk_ambari-administration/content/ambari_admin_overview.html
ambari监控
ambari安装默认用户和用户组
常见问题
问题1：Centos 7安装 ambari-agent报错NetUtil.py-[SSL: CERTIFICATE_VERIFY_FAILED] Centos 7安装 ambari通过Ambari部署系统时，ambari-agent注册失败，在/var/log/ambari-agent的log中可以看到日志显示： ERROR 2018-03-08 15:02:25,223 NetUtil.py:88 - [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579) ERROR 2018-03-08 15:02:25,223 NetUtil.py:89 - SSLError: Failed to connect. Please check openssl library versions. 解决方法： 修改/etc/python/cert-verification.cfg配置文件： # vim /etc/python/cert-verification.cfg [https] verify=platform_default ###(这是默认配置) 修改为verify=disable 编辑 /etc/ambari-agent/conf/ambari-agent.ini 配置文件，在 [security] 节部分，确保设置如下两个值，其它值保持不变： [root@ambari ~]# vim /etc/ambari-agent/conf/ambari-agent.ini [security] ssl_verify_cert=0 force_https_protocol=PROTOCOL_TLSv1_2 以上配置修改完后，重试即可通过ambari-agent注册，执行即可下一步
参考文档
官方文档安装文档
未完待续~