目标

• 在服务器以centos和docker安装telegraf。

centos_6">一、centos主机安装

1. In your terminal, enter the following command to add the InfluxData repository to the yum configuration:

cat <<EOF | sudo tee /etc/yum.repos.d/influxdb.repo
[influxdb]
name = InfluxData Repository - Stable
baseurl = https://repos.influxdata.com/stable/\$basearch/main
enabled = 1
gpgcheck = 1
gpgkey = https://repos.influxdata.com/influxdata-archive_compat.key
EOF

2. Enter the following command to install telegraf from the repository.

sudo yum install telegraf

3. The telegraf configuration file is installed at /etc/telegraf/telegraf.conf. 并修改配置，注意hostname为变量，后面操作中会进行替换，这里不用管。下面配置中的ip和port改为自己的。token和organization也需要替换。

• 这个 token 是从 InfluxDB 中生成的，代表授权的用户或服务，允许 Telegraf 将数据写入或读取指定的 bucket。
• organization 是 InfluxDB 中的组织名称。替换 “your organization” 为你在 InfluxDB 中的实际组织名称。

tee /etc/telegraf/telegraf.conf <<-'EOF'
[global_tags]nodetype = "controller" # will tag all metrics with dc=us-east-1
[agent]interval = "5s"round_interval = truemetric_batch_size = 1000metric_buffer_limit = 10000collection_jitter = "0s"flush_interval = "10s"flush_jitter = "0s"precision = ""debug = falsequiet = falselogfile = ""hostname = "Host-CUSTOMER_IP_ADDR_IN_TEMPLATE"omit_hostname = false
[[outputs.influxdb_v2]]
urls = ["http://ip:port"]## Token for authentication.
token = "your token"
organization = "your organization "
bucket = "telegraf"## CPU cell
[[inputs.cpu]]percpu = falsetotalcpu = truecollect_cpu_time = false
## Disk usage cell
[[inputs.disk]]ignore_fs = ["tmpfs", "devtmpfs", "devfs"]
[[inputs.mem]]## disk IO cell
[[inputs.diskio]]## Network
[[inputs.net]]## porcess cell
[[inputs.processes]]##
[[inputs.netstat]]
[[inputs.swap]]
## 系统负载信息
[[inputs.system]]
EOF

4. 替换hostname变量

HOST_IP_ADDR=`ifconfig eth0 |grep -E 'inet '|awk '{print $2}'`
sed -i "s/CUSTOMER_IP_ADDR_IN_TEMPLATE/$HOST_IP_ADDR/g" /etc/telegraf/telegraf.conf

5. 启动服务

systemctl restart telegraf
systemctl status telegraf

二、Docker安装telegraf

1. 检查是否存在docker

docker --version

不存在说明未安装

2. 安装docker

# 001 安装docker# 安装yum-config-manager配置工具 
yum -y install yum-utils 
# 建议使用阿里云yum源：（推荐） 
# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo 
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo 
# 安装docker-ce版本 
yum install -y docker-ce 
# 启动并开机启动 
systemctl enable --now docker 
docker --version

3. 安装docker-compose

# 使用代理
curl -SL https://ghp.ci/https://github.com/docker/compose/releases/download/v2.30.1/docker-compose-linux-x86_64 -o /usr/local/bin/docker-composechmod +x /usr/local/bin/docker-compose 
docker-compose --version

• 参考（https://juejin.cn/post/7223027325037789241）

4. 使用容器化安装telegraf

WORK_HOME='/opt/test'
mkdir -p $WORK_HOME
cd $WORK_HOME
mkdir -p $WORK_HOME/telegraf/

## 上传容器镜像
## rz-be 
tar zxvf telegraf-1.30.3.tar.tgz
docker load -i telegraf-1.30.3.tar
docker tag  0ba979829ba8 telegraf:1.30.3

tee ./docker-compose.yaml <<-'EOF'
version: "3"
services:telegraf:container_name: telegrafimage:  telegraf:1.30.3volumes:- /opt/test/telegraf/telegraf.conf:/etc/telegraf/telegraf.conf
EOF

ip和port同样需要替换。token和organization也需要替换。

tee ./telegraf/telegraf.conf <<-'EOF'
[global_tags]nodetype = "controller" # will tag all metrics with dc=us-east-1
[agent]interval = "5s"round_interval = truemetric_batch_size = 1000metric_buffer_limit = 10000collection_jitter = "0s"flush_interval = "10s"flush_jitter = "0s"precision = ""debug = falsequiet = falselogfile = ""hostname = "Host-CUSTOMER_IP_ADDR_IN_TEMPLATE"omit_hostname = false
[[outputs.influxdb_v2]]
urls = ["http://ip:port"]## Token for authentication.
token = "token"
organization = "organization"
bucket = "telegraf"## CPU cell
[[inputs.cpu]]percpu = falsetotalcpu = truecollect_cpu_time = false
## Disk usage cell
[[inputs.disk]]ignore_fs = ["tmpfs", "devtmpfs", "devfs"]
[[inputs.mem]]## disk IO cell
[[inputs.diskio]]## Network
[[inputs.net]]## porcess cell
[[inputs.processes]]##
[[inputs.netstat]]
[[inputs.swap]]
## 系统负载信息
[[inputs.system]]
EOF

HOST_IP_ADDR=`ifconfig eth0 |grep -E 'inet '|awk '{print $2}'`
sed -i "s/CUSTOMER_IP_ADDR_IN_TEMPLATE/$HOST_IP_ADDR/g" ./telegraf/telegraf.conf

# 赋予权限
chmod 777 -R ./telegraf/*
# 使用 Docker Compose 来启动容器
docker-compose -f   docker-compose.yaml  up -d
# 查看运行的容器
docker ps