在 OracleLinux7.4(Centos7.4) 上安装

1. 概述

OpenFalcon 是一款企业级、高可用、可扩展的开源监控解决方案，详细介绍请查看官方资料，我是参照官方手册进行安装的，记录了一些特殊的问题点。

2. 环境准备

• Oracle Linux 7.4

• 更换阿里 yum 源:centos、epel、mysql（centos 源中已经拿掉了mysql，需要额外添加）

  $ wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
  ###注意，我用的 OracleLinux7.4，还需要将 Centos-7.repo 中的 $releasever 替换为7，Centos 不需要修改。
  $ wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
  $ wget http://repo.mysql.com/mysql57-community-release-el7.rpm
  $ rpm -ivh mysql57-community-release-el7.rpm
  $ yum makecache
  

• 安装 redis

  $ yum install -y redis
  $ systemctl start redis
  

• 安装 mysql

  $ yum install -y mysql-community-server
  $ systemctl start mysql
  # 初次安装修改 root 密码
  $ grep 'password' /var/log/mysqld.log
  2018-01-18T07:40:04.075286Z 1 [Note] A temporary password is generated for root@localhost: .>!66%z*_f:N
  $ mysql -uroot -p.>!66%z*_f:N
  # 改密码
  mysql> set password=password('123456');
  
  

• 初始化 MySQL 表结构

$ cd /tmp/ && git clone https://github.com/open-falcon/falcon-plus.git
$ cd /tmp/falcon-plus/scripts/mysql/db_schema/
$ mysql -h 127.0.0.1 -u root -p < 1_uic-db-schema.sql
$ mysql -h 127.0.0.1 -u root -p < 2_portal-db-schema.sql
$ mysql -h 127.0.0.1 -u root -p < 3_dashboard-db-schema.sql
$ mysql -h 127.0.0.1 -u root -p < 4_graph-db-schema.sql
$ mysql -h 127.0.0.1 -u root -p < 5_alarms-db-schema.sql
$ rm -rf /tmp/falcon-plus/

• 下载编译好的二进制版本

  下载地址

3. 安装服务端

• 创建工作目录

$ export FALCON_HOME=/home/work
$ export WORKSPACE=$FALCON_HOME/open-falcon
$ mkdir -p $WORKSPACE        

• 解压二进制包

$ tar -xzvf open-falcon-v0.2.1.tar.gz -C $WORKSPACE

• 修改配置文件中的数据库账号信息

$ cd $WORKSPACE
$ grep -Ilr 3306 ./
aggregator/config/cfg.json
hbs/config/cfg.json
api/config/cfg.json
graph/config/cfg.json
alarm/config/cfg.json
nodata/config/cfg.json
# 确保上面配置文件中的数据库连接的账号密码与自己配置的一致    

• 启动

cd $WORKSPACE
./open-falcon start
# 检查所有模块的启动状况
./open-falcon check

• 更多命令

# ./open-falcon [start|stop|restart|check|monitor|reload] module
$ ./open-falcon start agent
$ ./open-falcon check
        falcon-graph         UP           53007
          falcon-hbs         UP           53014
        falcon-judge         UP           53020
     falcon-transfer         UP           53026
       falcon-nodata         UP           53032
   falcon-aggregator         UP           53038
        falcon-agent         UP           53044
      falcon-gateway         UP           53050
          falcon-api         UP           53056
        falcon-alarm         UP           53063

# For debugging , You can check $WorkDir/$moduleName/log/logs/xxx.log

4. 安装前端

• 进入工作目录

$ cd $WORKSPACE

• 克隆前端组件代码

$ git clone https://github.com/open-falcon/dashboard.git

• 尝试安装依赖包

$ yum install -y python-virtualenv
# 结果遇到问题，python-virtualenv 依赖 python-2.7.5-58.el7.x86_64，已经安装的是 python-2.7.5-58.0.1.el7.x86_64，具体解决办法请看下面“python 依赖包版本低需要降级”，解决之后继续下面的步骤.
$ yum install -y python-devel
$ yum install -y openldap-devel
$ yum install -y mysql-devel
$ yum groupinstall "Development tools"
$ cd $WORKSPACE/dashboard/
$ virtualenv ./env
$ ./env/bin/pip install -r pip_requirements.txt -i http://mirrors.aliyun.com/pypi/simple/

• 修改配置

#dashboard的配置文件为： 'rrd/config.py'，请根据实际情况修改
$ vim ./rrd/config.py
## API_ADDR 表示后端api组件的地址
API_ADDR = "http://127.0.0.1:8080/api/v1" 

## 根据实际情况，修改PORTAL_DB_*, 默认用户名为root，默认密码为""
## 根据实际情况，修改ALARM_DB_*, 默认用户名为root，默认密码为""

• 以开发者模式启动

$ ./env/bin/python wsgi.py

• 在生产环境启动

$ bash control start

• 停止dashboard运行

$ bash control stop

• 查看日志

$ bash control tail

• 打开浏览器使用吧 http://ip:8081

python 依赖包版本低需要降级

1. 问题描述：

python-virtualenv 依赖 python-2.7.5-58.el7.x86_64 ，已经安装的是 python-2.7.5-58.0.1.el7.x86_64，我需要卸载python-2.7.5-58.0.1.el7.x86_64，然后重新安装 python-2.7.5-58.el7.x86_64。

2. 卸载 python

$ rpm -qa|grep python|xargs rpm -e --allmatches --nodeps
$ whereis python|xargs rm -fr

3. 卸载 yum

$ rpm -qa|grep yum|xargs rpm -e --allmatches --nodeps
$ mv /etc/yum.repos.d /etc/yyyyy.repos.d
$ whereis yum|xargs rm -fr

4. 下载 python 安装包并安装

$ mkdir /usr/local/src/python
$ cd /usr/local/src/python
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/glibc-2.17-196.el7.x86_64.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/python-2.7.5-58.el7.x86_64.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/python-devel-2.7.5-58.el7.x86_64.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/python-libs-2.7.5-58.el7.x86_64.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/rpm-python-4.11.3-25.el7.x86_64.rpm
$ rpm -ivh  glibc* ./python-* ./rpm-python-*

5. 下载 yum 安装包并安装

$ mkdir /usr/local/src/yum
$ cd /usr/local/src/yum
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/yum-3.4.3-154.el7.centos.noarch.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
$ wget https://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm
$ rpm -ivh ./yum*
$ mv /etc/yyyyy.repos.d /etc/yum.repos.d
$ yum makecache