Kubernetes相关组件监控指标采集

洗尽了浮华

发布于 2019-05-25 16:51:05

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发布于 2019-05-25 16:51:05

线上部署了kuberneter集群环境，需要在zabbix上对相关组件运行情况进行监控。kuberneter组件监控指标分为固定指标数据采集和动态指标数据采集。其中，固定指标数据在终端命令行可以通过metrics接口获取, 在zabbix里"自动发现"；动态指标数据通过python脚本获获取，并返回JSON 字符串格式，在zabbix里添加模板或配置主机的自动发现策略。

一、固定指标数据采集（zabbix自动发现，采集间隔建议5min）

1. Master指标【采集范围：Master集群的3个节点，测试环境为192.168.10.93/94/95】

1、指标标识：kube_apiserver_process_cpu_seconds_total
采集指令示例：curl -s --cacert kubernetes-ca/ca.pem --cert kubernetes-ca/admin.pem --key kubernetes-ca/admin-key.pem  https://192.168.10.93:6443/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

2、指标标识：kube_apiserver_process_open_fds
采集指令示例：curl -s --cacert kubernetes-ca/ca.pem --cert kubernetes-ca/admin.pem --key kubernetes-ca/admin-key.pem  https://192.168.10.93:6443/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

3、指标标识：kube_apiserver_process_virtual_memory_bytes
采集指令示例：curl -s --cacert kubernetes-ca/ca.pem --cert kubernetes-ca/admin.pem --key kubernetes-ca/admin-key.pem  https://192.168.10.93:6443/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

4、指标标识：kube_apiserver_rest_client_requests_total_200_put
采集指令示例：curl -s --cacert kubernetes-ca/ca.pem --cert kubernetes-ca/admin.pem --key kubernetes-ca/admin-key.pem  https://192.168.10.93:6443/metrics | grep rest_client_requests_total | grep -v '#' | grep PUT | grep 200 | awk '{print $2}'

5、指标标识：kube_apiserver_rest_client_requests_total_200_get
采集指令示例：curl -s --cacert kubernetes-ca/ca.pem --cert kubernetes-ca/admin.pem --key kubernetes-ca/admin-key.pem  https://192.168.10.93:6443/metrics | grep rest_client_requests_total | grep -v '#' | grep GET | grep 200 | awk '{print $2}'

6、指标标识：etcd_debugging_mvcc_db_total_size_in_bytes
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep etcd_debugging_mvcc_db_total_size_in_bytes | grep -v '#' | awk '{print $2}'

7、指标标识：etcd_server_has_leader
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep etcd_server_has_leader | grep -v '#' | awk '{print $2}'

8、指标标识：etcd_server_leader_changes_seen_total
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep etcd_server_leader_changes_seen_total | grep -v '#' | awk '{print $2}'

9、指标标识：etcd_server_proposals_failed_total
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep etcd_server_proposals_failed_total | grep -v '#' | awk '{print $2}'

10、指标标识：etcd_process_cpu_seconds_total
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

11、指标标识：etcd_process_open_fds
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

12、指标标识：etcd_process_virtual_memory_bytes
采集指令示例：curl -s --cacert etcd/ca.pem --cert etcd/healthcheck-client.pem --key etcd/healthcheck-client-key.pem  https://192.168.10.93:2379/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

13、指标标识：kube_controller_manager_process_cpu_seconds_total
采集指令示例：curl -s 192.168.10.93:10252/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

14、指标标识：kube_controller_manager_process_open_fds
采集指令示例：curl -s 192.168.10.93:10252/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

15、指标标识：kube_controller_manager_process_virtual_memory_bytes
采集指令示例：curl -s 192.168.10.93:10252/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

16、指标标识：kube_controller_manager_rest_client_requests_total_200_put
采集指令示例：curl -s 192.168.10.93:10252/metrics | grep rest_client_requests_total | grep -v '#' | grep PUT | grep 200 | awk '{print $2}'

17、指标标识：kube_controller_manager_rest_client_requests_total_200_get
采集指令示例：curl -s 192.168.10.93:10252/metrics | grep rest_client_requests_total | grep -v '#' | grep GET | grep 200 | awk '{print $2}'

18、指标标识：kube_scheduler_process_cpu_seconds_total
采集指令示例：curl -s 192.168.10.93:10251/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

19、指标标识：kube_scheduler_process_open_fds
采集指令示例：curl -s 192.168.10.93:10251/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

20、指标标识：kube_scheduler_process_virtual_memory_bytes
采集指令示例：curl -s 192.168.10.93:10251/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

21、指标标识：kube_scheduler_rest_client_requests_total_200_put
采集指令示例：curl -s 192.168.10.93:10251/metrics | grep rest_client_requests_total | grep -v '#' | grep PUT | grep 200 | awk '{print $2}'

22、指标标识：kube_scheduler_rest_client_requests_total_200_get
采集指令示例：curl -s 192.168.10.93:10251/metrics | grep rest_client_requests_total | grep -v '#' | grep GET | grep 200 | awk '{print $2}'

2. Node指标【采集范围：Node的5个节点，测试环境为192.168.10.230/231/232/233/234】

1、指标标识：kubelet_docker_operations_errors_inspect_container
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep kubelet_docker_operations_errors | grep -v '#' | grep inspect_container | awk '{print $2}'

2、指标标识：kubelet_docker_operations_errors_inspect_image
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep kubelet_docker_operations_errors | grep -v '#' | grep inspect_image | awk '{print $2}'

3、指标标识：kubelet_docker_operations_errors_start_container
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep kubelet_docker_operations_errors | grep -v '#' | grep start_container | awk '{print $2}'

4、指标标识：kubelet_docker_operations_errors_stop_container
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep kubelet_docker_operations_errors | grep -v '#' | grep stop_container | awk '{print $2}'

5、指标标识：kubelet_node_config_error
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep kubelet_node_config_error | grep -v '#' | awk '{print $2}'

6、指标标识：kubelet_process_cpu_seconds_total
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

7、指标标识：kubelet_process_open_fds
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

8、指标标识：kubelet_process_virtual_memory_bytes
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

9、指标标识：kubelet_rest_client_requests_total_200_put
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep rest_client_requests_total | grep -v '#' | grep PUT | grep 200 | awk '{print $2}'

10、指标标识：kubelet_rest_client_requests_total_200_get
采集指令示例：curl -s 192.168.10.230:10255/metrics | grep rest_client_requests_total | grep -v '#' | grep GET | grep 200 | awk '{print $2}'

11、指标标识：kube_proxy_process_cpu_seconds_total
采集指令示例：curl -s 192.168.10.230:10249/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

12、指标标识：kube_proxy_process_open_fds
采集指令示例：curl -s 192.168.10.230:10249/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

13、指标标识：kube_proxy_process_virtual_memory_bytes
采集指令示例：curl -s 192.168.10.230:10249/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

14、指标标识：kube_proxy_rest_client_requests_total_200_put
采集指令示例：curl -s 192.168.10.230:10249/metrics | grep rest_client_requests_total | grep -v '#' | grep PUT | grep 200 | awk '{print $2}'

15、指标标识：kube_proxy_rest_client_requests_total_200_get
采集指令示例：curl -s 192.168.10.230:10249/metrics | grep rest_client_requests_total | grep -v '#' | grep GET | grep 200 | awk '{print $2}'

3. 整体指标【采集Node集群中任一节点即可，测试环境可采集其中一台192.168.10.230即可。在采集对应node节点的指标数据中，如果node节点宕机，则监控指标数据就会失败。为了防止这种情况，采集的IP可以建议修改为Nginx-Ingress IP或内部Service IP】

1、指标标识：coredns_process_cpu_seconds_total
采集指令示例：curl -s 192.168.10.230:9153/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

2、指标标识：coredns_process_open_fds
采集指令示例：curl -s 192.168.10.230:9153/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

3、指标标识：coredns_process_virtual_memory_bytes
采集指令示例：curl -s 192.168.10.230:9153/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

4、指标标识：kube_state_metrics_metrics_process_cpu_seconds_total
采集指令示例：curl -s 192.168.10.230:8081/metrics | grep process_cpu_seconds_total | grep -v '#' | awk '{print $2}'

5、指标标识：kube_state_metrics_metrics_process_open_fds
采集指令示例：curl -s 192.168.10.230:8081/metrics | grep process_open_fds | grep -v '#' | awk '{print $2}'

6、指标标识：kube_state_metrics_metrics_process_virtual_memory_bytes
采集指令示例：curl -s 192.168.10.230:8081/metrics | grep process_virtual_memory_bytes | grep -v '#' | awk '{print $2}'

二、固定指标数据采集

动态指标采集的python脚本（将各个动态指标数据采集脚本整合到了一个脚本里）

[root@bz4ccs001ap1001 ~]# cat zabbix-metrics-find.py 
#!/usr/bin/env python
# coding:utf-8

import json
import os
import re
import sys

#kube-state-metrics自动发现for zabbix
#python传参value/values(不区分大小写)时显示监控值，其他参数或无参数显示监控KEY
#采集范围：任一Node节点，测试可在192.168.10.230，此IP后续建议改为Nginx-Ingress的负载IP,或内部service IP
#采集间隔建议5min
#Author: GaoKan
#Created: 2019-5-22
#Updated:
def main():
    ip = '192.168.10.230'
    flag = 'key'
    if len(sys.argv) > 1:
        if sys.argv[1].lower() in ('value', 'values'):
            flag = 'value'
    keys = []
    values = []    
    metrics_dict = {
        #DaemonSet-Metrics
        'kube_daemonset_status_number_misscheduled' : {
            'forshort' : 'ds_misscheduled',
            'tags' : ['namespace', 'daemonset',],            
        },
        'kube_daemonset_status_number_unavailable' : {
            'forshort' : 'ds_unavailable',
            'tags' : ['namespace', 'daemonset',],
        },
        #Deployment-Metrics
        'kube_deployment_status_replicas_unavailable' : {
            'forshort' : 'deploy_unavailable',
            'tags' : ['namespace', 'deployment',],
        },
        #Pod-Metrics
        'kube_pod_container_status_waiting_reason' : {
            'forshort' : 'po_cntr_waiting_reason',
            'tags' : ['namespace', 'pod', 'container', 'reason',],
        },
        'kube_pod_container_status_terminated_reason' : {
            'forshort' : 'po_cntr_terminated_reason',
            'tags' : ['namespace', 'pod', 'container', 'reason',],
        },
        'kube_pod_container_status_restarts_total' : {
            'forshort' : 'po_cntr_restarts_total',
            'tags' : ['namespace', 'pod', 'container',],
        },
        #ReplicaSet-Metrics
        'kube_replicaset_status_ready_replicas' : {
            'forshort' : 'rs_ready_replicas',
            'tags' : ['namespace', 'replicaset',],           
        },
        'kube_replicaset_status_replicas' : {
            'forshort' : 'rs_replicas',
            'tags' : ['namespace', 'replicaset',],  
        },
        #Endpoint-Metrics
        'kube_endpoint_address_not_ready' : {
            'forshort' : 'ep_not_ready',
            'tags' : ['namespace', 'endpoint',],                       
        },
    }   
    metrics = os.popen('curl -s ' + ip + ':8080/metrics')   
    for row in metrics:
        if row.startswith('#'):
            continue
        pos1 = row.find('{')
        pos2 = row.find('}')
        if row[: pos1] in metrics_dict.keys():
            key = metrics_dict[row[: pos1]]['forshort']
            for tag in metrics_dict[row[: pos1]]['tags']:
                key += '_' + re.search(r'' + tag + '=\"(.*?)\"', row[pos1 + 1 : pos2]).group(1)
            keys.append({"{#METRICSNAME}" : key})
            values.append({"{#METRICSVALUE}" : row[pos2 + 2 : -1]})                    
    if flag == 'value':
        print(json.dumps({"data":values},indent = 4))
    else:
        print(json.dumps({"data":keys},indent = 4))

if __name__ == "__main__":
    main()

执行脚本，返回json字符串格式（执行结果显示的是kubernetes所有的对象资源，如pod，deploy，service等的运行状态，根据跑的业务量，可能会有成百上千个）

[root@bz4ccs001ap1001 ~]# python zabbix-metrics-find.py 
{
    "data": [
        {
            "{#METRICSNAME}": "ds_misscheduled_test-rg_test-rg-005"
        }, 
        {
            "{#METRICSNAME}": "ds_misscheduled_cattle-system_cattle-node-agent"
        }, 
        {
            "{#METRICSNAME}": "ds_misscheduled_test-rg_test-rg-001"
        }, 
        {
            "{#METRICSNAME}": "ds_misscheduled_test-rg_test-rg-002"
        }, 
        {
            "{#METRICSNAME}": "ds_misscheduled_test-rg_test-rg-003"
        }, 
        {
            "{#METRICSNAME}": "ds_misscheduled_test-rg_test-rg-004"
        }, 
        {
            "{#METRICSNAME}": "ds_unavailable_test-rg_test-rg-003"
        }, 
        {
            "{#METRICSNAME}": "ds_unavailable_test-rg_test-rg-004"
        }, 
        {
            "{#METRICSNAME}": "ds_unavailable_test-rg_test-rg-005"
        }, 
...................
...................
       {
            "{#METRICSNAME}": "po_cntr_restarts_total_test-rg_test-rg-005-jvkm6_test-rg-005"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_cattle-system_cattle-node-agent-mdl9x_agent"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_test-rg_test-rg-005-wpsbq_test-rg-005"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_test-rg_test-rg-004-9s57x_test-rg-004"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_test-rg_test-rg-005-wxk54_test-rg-005"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_cattle-system_cattle-node-agent-r46bz_agent"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_default_mysql-ceph-test-76697d98d6-4gj9v_mysql-ceph-test"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_kube-system_coredns-5cbf6655f-6wxqz_coredns"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_kube-system_kube-state-metrics-576fbb446d-ctl4p_addon-resizer"
        }, 
        {
            "{#METRICSNAME}": "po_cntr_restarts_total_kube-system_kube-state-metrics-576fbb446d-ctl4p_kube-state-metrics"
        },

...................
...................
        {
            "{#METRICSNAME}": "rs_ready_replicas_test_nginx-5c689d88bb"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_two-test_aicase-docker-5784b5749b"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_cattle-system_cattle-cluster-agent-d59dbdb55"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_test_nginx-589dcbcbd6"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_test_nginx-5b677cdf4f"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_default_mysql-ceph-test-76697d98d6"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_kube-system_kube-state-metrics-75bbc44548"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_kube-system_traefik-ingress-controller-6db4877748"
        }, 
        {
            "{#METRICSNAME}": "rs_ready_replicas_two-test_aicase-docker-57d445cbf"
        }
    ]
}

查询values

[root@bz4ccs001ap1001 ~]# python zabbix-metrics-find.py values
{
    "data": [
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
.................
.................
        {
            "{#METRICSVALUE}": "1"
        }, 
        {
            "{#METRICSVALUE}": "27"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "3"
        }, 
        {
            "{#METRICSVALUE}": "0"
        },
.................
.................
        {
            "{#METRICSVALUE}": "1"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "2"
        }, 
        {
            "{#METRICSVALUE}": "1"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }, 
        {
            "{#METRICSVALUE}": "2"
        }, 
        {
            "{#METRICSVALUE}": "0"
        }
    ]
}

在被监控节点上配置zabbix_agent

UserParameter 填写的是key值，这个可以随便定义
后面跟上监控脚本的执行过程
[root@bz4ccs001ap1001 ~]# cat /etc/zabbix/zabbix_agentd.d/ceshi.conf 
UserParameter=k8s.autofind.metrics,/bin/python /root/zabbix-metrics-find.py

查询键值(key)
[root@bz4ccs001ap1001 ~]# zabbix_agentd -t k8s.autofind.metrics
这个命令查询出来的结果和上面执行"python zabbix-metrics-find.py"出来的结果一样

===================================================================================
然后登录zabbix，在"配置"->"主机"->"自动发现", 添加自动发现即可

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原始发表：2019-05-24 ，如有侵权请联系 cloudcommunity@tencent.com 删除

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