一、grafana的（192.168.80.174，rhel7.4）安装：
1.
按照如下的指导进行按照
http://docs.grafana.org/installation/rpm/
2.
systemctl disable firewalld
systemctl stop firewalld
二、influxdb的安装：
安装在grafana服务器上，
[root@localhost ~]# wget https://dl.influxdata.com/influxdb/releases/influxdb-1.5.2.x86_64.rpm
--2018-05-07 02:27:44-- https://dl.influxdata.com/influxdb/releases/influxdb-1.5.2.x86_64.rpm
Resolving dl.influxdata.com (dl.influxdata.com)... 52.85.83.158, 52.85.83.236, 52.85.83.161, ...
Connecting to dl.influxdata.com (dl.influxdata.com)|52.85.83.158|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 22475137 (21M) [application/octet-stream]
Saving to: ‘influxdb-1.5.2.x86_64.rpm’
100%[=======================================================================================================================================================================>] 22,475,137 6.11MB/s in 4.9s
2018-05-07 02:27:50 (4.41 MB/s) - ‘influxdb-1.5.2.x86_64.rpm’ saved [22475137/22475137]
[root@localhost ~]# ls -lrt
total 4054008
-rw-r--r--. 1 root root 17575240 Oct 5 2016 influxdb-1.0.2.x86_64.rpm
-rw-r--r--. 1 root root 4059037696 Aug 3 2017 rhel-server-7.4-x86_64-dvd.iso
-rw-r--r--. 1 root root 22475137 Apr 12 21:00 influxdb-1.5.2.x86_64.rpm
-rw-------. 1 root root 1934 May 4 02:34 anaconda-ks.cfg
-rw-r--r--. 1 root root 52207581 May 4 06:19 grafana-5.1.0-1.x86_64.rpm
[root@localhost ~]# rpm -Uvh influxdb-1.5.2.x86_64.rpm
Preparing... ################################# [100%]
Updating / installing...
1:influxdb-1.5.2-1 ################################# [100%]
Created symlink from /etc/systemd/system/influxd.service to /usr/lib/systemd/system/influxdb.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/influxdb.service to /usr/lib/systemd/system/influxdb.service.
[root@localhost ~]# systemctl enable influxdb.service
[root@localhost ~]# systemctl start influxdb.service
[root@localhost ~]# influx
Connected to http://localhost:8086 version 1.5.2
InfluxDB shell version: 1.5.2
> CREATE DATABASE telegraf --->>>此处是建立telegraf的数据库
>
> show databases
name: databases
name
----
_internal
telegraf
>
三、telegraf的安装：
https://docs.influxdata.com/telegraf/v1.6/
安装在HGDB服务器上，telegraf作为agent
[root@hgdb01 ~]# wget https://dl.influxdata.com/telegraf/releases/telegraf-1.6.1-1.x86_64.rpm
[root@hgdb01 ~]# ls -lrt
total 3547904
-rw-r--r--. 1 oracle oinstall 3453696911 Mar 5 2017 linuxx64_12201_database.zip
-rw-------. 1 root root 1854 Apr 1 15:54 anaconda-ks.cfg
drwxr-xr-x. 5 3434 3434 36 Apr 24 05:22 telegraf
-rw-r--r--. 1 root root 9547459 Apr 24 05:22 telegraf-1.6.1-1.x86_64.rpm ---->>>>此处
-rw-r--r--. 1 root root 9666445 Apr 24 05:22 telegraf-1.6.1_linux_amd64.tar.gz
-rw-r--r--. 1 root root 160133538 Apr 28 08:00 hgdb4.3.2_installer_redhat7.x_Enterprise_x86-64_20180118.tar.gz
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Downloads
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Desktop
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Videos
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Templates
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Public
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Pictures
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Music
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Documents
[root@hgdb01 ~]# pwd
/root
[root@hgdb01 ~]# ls -lrt
total 3547904
-rw-r--r--. 1 oracle oinstall 3453696911 Mar 5 2017 linuxx64_12201_database.zip
-rw-------. 1 root root 1854 Apr 1 15:54 anaconda-ks.cfg
drwxr-xr-x. 5 3434 3434 36 Apr 24 05:22 telegraf
-rw-r--r--. 1 root root 9547459 Apr 24 05:22 telegraf-1.6.1-1.x86_64.rpm
-rw-r--r--. 1 root root 9666445 Apr 24 05:22 telegraf-1.6.1_linux_amd64.tar.gz
-rw-r--r--. 1 root root 160133538 Apr 28 08:00 hgdb4.3.2_installer_redhat7.x_Enterprise_x86-64_20180118.tar.gz
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Downloads
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Desktop
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Videos
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Templates
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Public
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Pictures
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Music
drwxr-xr-x. 2 root root 6 Apr 28 13:15 Documents
[root@hgdb01 ~]# rpm -Uvh telegraf-1.6.1-1.x86_64.rpm
Preparing... ################################# [100%]
Updating / installing...
1:telegraf-1.6.1-1 ################################# [100%]
Created symlink from /etc/systemd/system/multi-user.target.wants/telegraf.service to /usr/lib/systemd/system/telegraf.service.
[root@hgdb01 ~]# systemctl start telegraf
[root@hgdb01 ~]# systemctl enable telegraf
[root@hgdb01 ~]#
[root@hgdb01 telegraf]# ll
total 116
-rw-r--r--. 1 root root 118108 Apr 24 05:22 telegraf.conf
drwxr-xr-x. 2 root root 6 Apr 24 05:22 telegraf.d
[root@hgdb01 telegraf]# pwd
/etc/telegraf
[root@hgdb01 telegraf]#
需要修改/etc/telegraf/telegraf.conf文件里边的内容：
81 ###############################################################################
82 # OUTPUT PLUGINS #
83 ###############################################################################
84
85 # Configuration for sending metrics to InfluxDB
86 [[outputs.influxdb]]
87 ## The full HTTP or UDP URL for your InfluxDB instance.
88 ##
89 ## Multiple URLs can be specified for a single cluster, only ONE of the
90 ## urls will be written to each interval.
91 # urls = ["unix:///var/run/influxdb.sock"]
92 # urls = ["udp://127.0.0.1:8089"]
93 urls = ["http://192.168.80.174:8086"] -------->>>>此处的192.168.80.174是influxdb服务器端的IP地址。
94
95 ## The target database for metrics; will be created as needed.
96 database = "telegraf" -------->>>>数据库名字是telegraf，取自“二、influxdb的安装”中建立的database
97
98 ## If true, no CREATE DATABASE queries will be sent. Set to true when using
99 ## Telegraf with a user without permissions to create databases or when the
100 ## database already exists.
101 # skip_database_creation = false
102
103 ## Name of existing retention policy to write to. Empty string writes to
104 ## the default retention policy.
105 # retention_policy = ""
106
107 ## Write consistency (clusters only), can be: "any", "one", "quorum", "all"
108 # write_consistency = "any"
109
110 ## Timeout for HTTP messages.
111 timeout = "5s"
112
113 ## HTTP Basic Auth
114 username = "telegraf" -------->>>>注意此处
115 password = "telegraf" -------->>>>注意此处
3407 [[inputs.postgresql]] --->>>固定写法
3408 address = "postgres://highgo:[email protected]" --->>>格式为postgres://[dbusername[:password]]@localhost[/dbname]
3409 databases = ["highgo"] --->>database的名字
参考资料：
postgresql的插件：
https://www.influxdata.com/integration/postgresql-monitoring/
https://github.com/influxdata/telegraf/tree/master/plugins/inputs/postgresql
https://github.com/influxdata/docs.influxdata.com/blob/master/content/telegraf/v1.6/introduction/_index.md
四： http://192.168.80.174:3000访问即可。