k8s集群容器监控
硬件环境：两台虚拟机，
10.10.20.203 部署docker、etcd、flannel、kube-apiserver、kube-controller-manager、kube-scheduler、influxdb、grafana
10.10.20.206 部署docker、flannel、kubelet、kube-proxy、cadvisor
10.10.20.207 部署docker、flannel、kubelet、kube-proxy、cadvisor
【安装influxdb】
1、添加yum源，执行如下指令：
cat <<EOF | sudo tee /etc/yum.repos.d/influxdb.repo，添加以下内容
name
= InfluxDB Repository - RHEL \$releasever
baseurl
= https://repos.influxdata.com/rhel/\$releasever/\$basearch/stable
enabled = 1
gpgcheck = 1
gpgkey = https://repos.influxdata.com/influxdb.key
EOF
2、安装influxdb
yum install influxdb
3、重启服务
systemctl enable influxdb
systemctl start influxdb
systemctl status influxdb
4、编辑配置文件（查看配置文件路径，可以执行rpm -qc influxdb）
vi /etc/influxdb/influxdb.conf
将hostname修改为本机IP
hostname = "10.10.20.203"
5、创建库和用户，执行以下指令
influx
CREATE DATABASE testdb
SHOW DATABASES
use testdb
Using database testdb
CREATE USER
"root" WITH PASSWORD 'root' WITH ALL PRIVILEGES
show users
【grafana】
1、下载grafana，需要FQ，地址为https://grafanarel.s3.amazonaws.com/builds/grafana-2.6.0-1.x86_64.rpm
2、安装grafana，rpm -ivh grafana-2.6.0-1.x86_64.rpm
3、重启服务
systemctl enable grafana-server
systemctl start grafana
-server
systemctl status grafana
-server
4、访问http://10.10.20.203:3000，用户名密码：admin/admin
5、添加数据源，连接testdb
https://images2015.cnblogs.com/blog/481443/201609/481443-20160901104314918-1681550662.png
【cadvisor】
在需要监控的服务器上安装cadvisor，执行以下指令
docker run -d \
--volume=/:/rootfs:ro \
--volume=/var/run:/var/run:rw \
--volume=/sys:/sys:ro \
--volume=/var/lib/docker/:/var/lib/docker:ro \
--publish=8080:8080 \
--detach=true \
--name=k8s-slave1-206-monitor \
10.10.20.201/library/cadvisor:v1 \
-storage_driver=influxdb \
-storage_driver_db=k8s \
-storage_driver_host=10.10.20.203:8086
所有软件都已经安装完毕，可以在grafana上制定dashborad了。
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