排除Docker群集中CPS-DRA VM的状态问题(&Q)

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已更新: 2024 年 6 月 25 日

文档 ID:222069

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简介

本文档介绍如何排除Cisco Policy Suite (CPS)-Diameter Routing Agent (DRA)虚拟机(VM)的状态问题JOINING。

`先决条件`

`要求`

Cisco 建议您了解以下主题：

 Linux
 CPS

  
     
     注意：思科建议您必须具有对CPS DRA CLI的超级用户访问权限。

`使用的组件`

本文档中的信息基于以下软件和硬件版本：

 CPS-DRA 22.2
 统一计算系统(UCS)-B

本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您的网络处于活动状态，请确保您了解所有命令的潜在影响。

`背景信息`

CPS Virtual Diameter Routing Agent (vDRA)充当网络中的操作组件，通过使用路由算法将消息引导至其预定目的节点。

CPS vDRA的核心作用是消息路由和随后将响应传输到原始源点。

CPS vDRA包含使用Docker引擎作为集群协调的虚拟机(VM)集合，由不同的实体组成，即主虚拟机、控制虚拟机、导向虚拟机、分发服务器虚拟机和工作服务器VM。

admin@orchestrator[master-1]# show docker engine
Fri Jul 14 09:36:18.635 UTC+00:00
MISSED 
ID STATUS PINGS 
----------------------------------
control-1 CONNECTED 0 
control-2 CONNECTED 0 
director-1 CONNECTED 0 
director-2 CONNECTED 0 
director-3 CONNECTED 0 
director-4 CONNECTED 0 
director-5 CONNECTED 0 
director-6 CONNECTED 0 
director-7 CONNECTED 0 
director-8 CONNECTED 0 
distributor-1 CONNECTED 0 
distributor-2 CONNECTED 0 
distributor-3 CONNECTED 0 
distributor-4 CONNECTED 0 
master-1 CONNECTED 0 
worker-1 CONNECTED 0 
worker-2 CONNECTED 0 
worker-3 CONNECTED 0 
admin@orchestrator[master-1]#

状态-指示计划应用程序是否连接到Docker引擎并在主机上运行。

错过的ping -给定主机连续错过的ping数。

`问题`

有时，CPS vDRA VM由于各种原因而停滞在JOINING状态。

admin@orchestrator[master-1]# show docker engine
Fri Jul 14 09:36:18.635 UTC+00:00
MISSED 
ID STATUS PINGS 
----------------------------------
control-1 CONNECTED 0 
control-2 CONNECTED 0 
director-1 JOINING 57
director-2 JOINING 130
director-3 JOINING 131
director-4 JOINING 130
director-5 JOINING 30
director-6 JOINING 129 
distributor-1 CONNECTED 0 
distributor-2 CONNECTED 0 
distributor-3 CONNECTED 0 
distributor-4 CONNECTED 0 
master-1 CONNECTED 0 
worker-1 CONNECTED 0 
worker-2 CONNECTED 0 
worker-3 CONNECTED 0 
admin@orchestrator[master-1]#

导致VM停滞在JOINING状态的可能原因

1. 无法从主VM访问虚拟机。

1.1.验证受影响虚拟机上的编织连接状态是否为套筒模式。

 
      
      注意：Weave Net会创建一个虚拟网络，用于连接部署在多个主机上的Docker容器并启用其自动发现。借助Weave Net，由多个容器组成的便携式微服务应用可以在任何地方运行：一台主机、多台主机，甚至跨云提供商和数据中心运行。应用程序使用网络的方式与将容器全部插入同一网络交换机一样，无需配置端口映射、大使或链路。

CPS-DRA有两种主要的编织连接状态：fastdp和套筒。CPS-DRA集群中的首选项始终倾向于使编织连接处于fastdp 状态。

cps@director-1:~$ weave status connections
-> xx.xx.xx.xx:6783 established sleeve 4e:5f:58:99:d5:65(worker-1) mtu=1438
-> xx.xx.xx.xx:6783 established sleeve 76:33:17:3a:c7:ec(worker-2) mtu=1438
<- xx.xx.xx.xx:54751 established sleeve 76:3a:e9:9b:24:84(director-1) mtu=1438
-> xx.xx.xx.xx:6783 established sleeve 6e:62:58:a3:7a:a0(director-2) mtu=1438
-> xx.xx.xx.xx:6783 established sleeve de:89:d0:7d:b2:4e(director-3) mtu=1438

1.2.验证受影响的VM上的journalctl 日志中是否存在这些日志消息。

2023-08-01T10:20:25.896+00:00  docker-engine  Docker engine control-1 is unreachable                     
2023-08-01T10:20:25.897+00:00  docker-engine  Docker engine control-2 is unreachable                     
2023-08-01T10:20:25.935+00:00  docker-engine  Docker engine distributor-1 is unreachable                     
2023-08-01T10:20:25.969+00:00  docker-engine  Docker engine worker-1 is unreachable  

INFO: 2023/08/02 20:46:26.297275 overlay_switch ->[ee:87:68:44:fc:6a(worker-3)] fastdp timed out waiting for vxlan heartbeat
INFO: 2023/08/02 20:46:26.297307 overlay_switch ->[ee:87:68:44:fc:6a(worker-3)] using sleeve

2. VM磁盘空间耗尽。

2.1.验证受影响虚拟机上的磁盘空间使用情况，并确定磁盘空间使用率较高的分区。

 cps@control-2:~$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 32G 0 32G 0% /dev
tmpfs 6.3G 660M 5.7G 11% /run
/dev/sda3 97G 97G 0 100% /
tmpfs 32G 0 32G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup
/dev/sdb1 69G 4.7G 61G 8% /data
/dev/sda1 180M 65M 103M 39% /boot
/dev/sdb2 128G 97G 25G 80% /stats
overlay 97G 97G 0 100% /var/lib/docker/overlay2/63854e8173b46727e11de3751c450037b5f5565592b83112a3863febf3940792/merged
overlay 97G 97G 0 100% /var/lib/docker/overlay2/a86da2c7a289dc2b71359654c5160a9a8ae334960e78def78e6eecea95855853/merged
overlay 97G 97G 0 100% /var/lib/docker/overlay2/9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7/merged
overlay 97G 97G 0 100% /var/lib/docker/overlay2/49ee42311e82974707a6041d82e6c550004d1ce25349478bb974cc017a84aff5/merged
cps@control-2:~$

`将CPS-DRA VM从加入状态恢复的过程`

方法1.

如果无法从主VM访问VM，请使用此方法。

1. 验证受影响虚拟机上的编织连接状态（如果为套筒模式）。

#weave connection status

Sample output:

cps@director-1:~$ weave status connections
-> xx.xx.xx.xx:6783 established sleeve 4e:5f:58:99:d5:65(worker-1) mtu=1438
-> xx.xx.xx.xx:6783 established sleeve 76:33:17:3a:c7:ec(worker-2) mtu=1438
<- xx.xx.xx.xx:54751 established sleeve 76:3a:e9:9b:24:84(director-1) mtu=1438
-> xx.xx.xx.xx:6783 established sleeve 6e:62:58:a3:7a:a0(director-2) mtu=1438
-> xx.xx.xx.xx:6783 established sleeve de:89:d0:7d:b2:4e(director-3) mtu=1438

2. 在各自的虚拟机上重新启动编织。

#docker restart weave

3. 验证编织连接状态是否已移至fastdp状态，受影响虚拟机是否已移至CONNECTED状态。

4. 如果VM仍停滞在JOINING状态，请重新启动那些受影响的VM。

      #sudo reboot now     or   #init 6

5. 现在验证受影响的VM是否已变为CONNECTED状态。

admin@orchestrator[master-1]# show docker engine
Fri Jul 14 09:36:18.635 UTC+00:00
MISSED 
ID STATUS PINGS 
----------------------------------
control-1 CONNECTED 0 
control-2 CONNECTED 0 
director-1 CONNECTED 0 
director-2 CONNECTED 0 
director-3 CONNECTED 0 
director-4 CONNECTED 0 
distributor-1 CONNECTED 0 
distributor-2 CONNECTED 0 
distributor-3 CONNECTED 0 
distributor-4 CONNECTED 0 
master-1 CONNECTED 0 
worker-1 CONNECTED 0 
worker-2 CONNECTED 0 
worker-3 CONNECTED 0 
admin@orchestrator[master-1]#

6. 验证vPAS是否启动餐饮流量，并且所有容器均处于UP状态（尤其是diameter终端），否则在drc01 VM中重新启动orchestrator-backup-a容器。

#docker restart orchestrator-backup-a

7. 现在，验证vPAS是否开始处理流量。

方法2.

如果VM的磁盘空间耗尽。

1. 确定占用高磁盘空间的目录。

root@control-2:/var/lib/docker/overlay2#du -ah / --exclude=/proc | sort -r -h | head -n 10
176G 9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7

2. 验证占用大量磁盘空间的文件/日志/转储。

root@control-2:/var/lib/docker/overlay2/9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7/diff# ls -lrtha | grep G
total 88G
-rw------- 1 root root 1.1G Jul 12 18:10 core.22781
-rw------- 1 root root 1.2G Jul 12 18:12 core.24213
-rw------- 1 root root 1.2G Jul 12 18:12 core.24606
-rw------- 1 root root 1.1G Jul 12 18:12 core.24746
-rw------- 1 root root 1.1G Jul 12 18:13 core.25398

3. 确定在受影响虚拟机上运行的容器（尤其是不健康的容器）。

admin@orchestrator[master-1]# show docker service | exclude HEALTHY
Fri Jul 14 09:37:20.325 UTC+00:00
PENALTY 
MODULE INSTANCE NAME VERSION ENGINE CONTAINER ID STATE BOX MESSAGE 
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
cc-monitor 103 cc-monitor 22.1.1-release control-2 cc-monitor-s103 STARTED true Pending health check 
mongo-node 103 mongo-monitor 22.1.1-release control-2 mongo-monitor-s103 STARTED true Pending health check 
mongo-status 103 mongo-status 22.1.1-release control-2 mongo-status-s103 STARTED false - 
policy-builder 103 policy-builder 22.1.1-release control-2 policy-builder-s103 STARTED true Pending health check 
prometheus 103 prometheus-hi-res 22.1.1-release control-2 prometheus-hi-res-s103 STARTED true Pending health check 
prometheus 103 prometheus-planning 22.1.1-release control-2 prometheus-planning-s103 STARTED false -

admin@orchestrator[master-1]#

4. 确定触发大容量核心文件的容器，以逐个检查受影响虚拟机上托管的每个容器。

Sample output for container "cc-monitor-s103":

root@control-2:/var/lib/docker/overlay2/9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7/merged# docker inspect cc-monitor-s103| grep /var/lib/docker/overlay2/| grep merged
"MergedDir": "/var/lib/docker/overlay2/9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7/merged",
root@control-2:/var/lib/docker/overlay2/9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7/merged#

5. 检查您是否有权访问该特定容器。

#admin@orchestrator[master-0]# docker connect cc-monitor-s103

6. 如果无法访问容器，请删除大块的核心文件以释放一些空间。

root@control-2:/var/lib/docker/overlay2/9dfd1bf36282c4e707a3858beba91bfaa383c78b5b9eb3acf0e58f335126d9b7/diff#  rm -rf core*

7. 从受影响的VM登录受影响的容器。

     #docker exec -it cc-monitor-s103 bash

8. 重新启动容器中的app进程，以停止生成大容量核心文件。

root@cc-monitor-s103:/# supervisorctl status
app STARTING 
app-logging-status RUNNING pid 30, uptime 21 days, 23:02:17
consul RUNNING pid 26, uptime 21 days, 23:02:17
consul-template RUNNING pid 27, uptime 21 days, 23:02:17
haproxy RUNNING pid 25, uptime 21 days, 23:02:17
root@cc-monitor-s103:/#

root@cc-monitor-s103:/# date; supervisorctl restart app
Fri Jul 14 09:08:38 UTC 2023
app: stopped
app: started
root@cc-monitor-s103:/# 

root@cc-monitor-s103:/# supervisorctl status
app RUNNING pid 26569, uptime 0:00:01
app-logging-status RUNNING pid 30, uptime 21 days, 23:02:44
consul RUNNING pid 26, uptime 21 days, 23:02:44
consul-template RUNNING pid 27, uptime 21 days, 23:02:44
haproxy RUNNING pid 25, uptime 21 days, 23:02:44
root@cc-monitor-s103:/#

9. 如果步骤8.无助于停止生成批量核心文件，请重新启动受影响的容器。

      #docker restart cc-monitor-s103

10. 检查批量核心文件生成是否已停止。

11. 要将受影响的VM恢复为“已连接”状态，请登录orchestrator容器并执行重orchestration-engine 启。

cps@master-1:~$ date; docker exec -it orchestrator bash
Fri Jul 14 09:26:12 UTC 2023
root@orchestrator:/#

root@orchestrator:/# supervisorctl status
confd RUNNING pid 20, uptime 153 days, 23:33:33
consul RUNNING pid 19, uptime 153 days, 23:33:33
consul-template RUNNING pid 26, uptime 153 days, 23:33:33
haproxy RUNNING pid 17, uptime 153 days, 23:33:33
mongo RUNNING pid 22, uptime 153 days, 23:33:33
monitor-elastic-server RUNNING pid 55, uptime 153 days, 23:33:33
monitor-log-forward RUNNING pid 48, uptime 153 days, 23:33:33
orchestration-engine RUNNING pid 34, uptime 153 days, 23:33:33
orchestrator_back_up RUNNING pid 60, uptime 153 days, 23:33:33
remove-duplicate-containers RUNNING pid 21, uptime 153 days, 23:33:33
rolling-restart-mongo RUNNING pid 18, uptime 153 days, 23:33:33
simplehttp RUNNING pid 31, uptime 153 days, 23:33:33
root@orchestrator:/#

root@orchestrator:/# date; supervisorctl restart orchestration-engine
Fri Jul 14 09:26:39 UTC 2023
orchestration-engine: stopped
orchestration-engine: started
root@orchestrator:/#

12. 如果步骤11.对恢复VM没有帮助，请在受影响的VM中执行引擎代理重新启动。

cps@control-2:~$ docker ps | grep engine
0b778fae2616 engine-proxy:latest "/w/w /usr/local/bin…" 5 months ago Up 3 weeks engine-proxy-ddd7e7ec4a70859b53b24f3926ce6f01

cps@control-2:~$ docker restart engine-proxy-ddd7e7ec4a70859b53b24f3926ce6f01
engine-proxy-ddd7e7ec4a70859b53b24f3926ce6f01
cps@control-2:~$

cps@control-2:~$ docker ps | grep engine
0b778fae2616 engine-proxy:latest "/w/w /usr/local/bin…" 5 months ago Up 6 seconds engine-proxy-ddd7e7ec4a70859b53b24f3926ce6f01
cps@control-2:~$

13. 现在，验证受影响的VM是否已变为CONNECTED状态。

admin@orchestrator[master-1]# show docker engine
Fri Jul 14 09:36:18.635 UTC+00:00
ID STATUS MISSED PINGS 
----------------------------------
control-1 CONNECTED 0 
control-2 CONNECTED 0 
director-1 CONNECTED 0 
director-2 CONNECTED 0 
director-3 CONNECTED 0 
director-4 CONNECTED 0 
distributor-1 CONNECTED 0 
distributor-2 CONNECTED 0 
distributor-3 CONNECTED 0 
distributor-4 CONNECTED 0 
master-1 CONNECTED 0 
worker-1 CONNECTED 0 
worker-2 CONNECTED 0 
worker-3 CONNECTED 0 
admin@orchestrator[master-1]#

修订历史记录

版本	发布日期	备注
1.0	25-Jun-2024	初始版本

由思科工程师提供

米丹P
思科TAC工程师

排除Docker群集中CPS-DRA VM的状态问题(&Q)

下载选项

非歧视性语言

关于此翻译

目录

简介

先决条件

要求

使用的组件

背景信息

问题

将CPS-DRA VM从加入状态恢复的过程