[TOC]
1. 环境说明
| 软件 | 版本 |
|---|---|
| 操作系统 | CentOS7.6 |
| ceph | nautilus, v14.2.4 |
ceph-deploy的nautilus版本安装和luminous版本一样，可以参考我以前的文章：
https://blog.51cto.com/ygqygq2/2161917
2. 启用ceph dashboard失败
mgr模块开启dashboard提示错误，虽然加上--force表面启用了，但实际并未启动dashboard服务，因为设置dashboard用户命令提示不支持。
3. 问题排查过程
mgr节点查看mgr启动日志
详细日志：
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn e: '/usr/bin/ceph-mgr'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 0: '/usr/bin/ceph-mgr'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 1: '-f'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 2: '--cluster'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 3: 'ceph'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 4: '--id'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 5: 'utyun-node2'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 6: '--setuser'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 7: 'ceph'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 8: '--setgroup'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn 9: 'ceph'
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn respawning with exe /usr/bin/ceph-mgr
2019-11-08 12:44:23.673 7f7388cd9700 1 mgr respawn exe_path /proc/self/exe
2019-11-08 12:44:23.737 7fb0b7715b80 0 ceph version 14.2.4 (75f4de193b3ea58512f204623e6c5a16e6c1e1ba) nautilus (stable), process ceph-mgr, pid 158648
2019-11-08 12:44:23.738 7fb0b7715b80 0 pidfile_write: ignore empty --pid-file
2019-11-08 12:44:23.776 7fb0b7715b80 1 mgr[py] Loading python module 'ansible'
2019-11-08 12:44:23.834 7fb0b7715b80 -1 mgr[py] Module not found: 'ansible'
2019-11-08 12:44:23.834 7fb0b7715b80 -1 mgr[py] Traceback (most recent call last):
File "/usr/share/ceph/mgr/ansible/__init__.py", line 5, in
from .module import Module
File "/usr/share/ceph/mgr/ansible/module.py", line 10, in
import requests
File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 58, in
from . import utils
File "/usr/lib/python2.7/site-packages/requests/utils.py", line 32, in
from .exceptions import InvalidURL
File "/usr/lib/python2.7/site-packages/requests/exceptions.py", line 10, in
from .packages.urllib3.exceptions import HTTPError as BaseHTTPError
File "/usr/lib/python2.7/site-packages/requests/packages/__init__.py", line 95, in load_module
raise ImportError("No module named '%s'" % (name,))
ImportError: No module named 'requests.packages.urllib3'
2019-11-08 12:44:23.835 7fb0b7715b80 -1 mgr[py] Class not found in module 'ansible'
2019-11-08 12:44:23.835 7fb0b7715b80 -1 mgr[py] Error loading module 'ansible': (2) No such file or directory
2019-11-08 12:44:23.835 7fb0b7715b80 1 mgr[py] Loading python module 'balancer'
2019-11-08 12:44:23.850 7fb0b7715b80 1 mgr[py] Loading python module 'crash'
2019-11-08 12:44:23.864 7fb0b7715b80 1 mgr[py] Loading python module 'dashboard'
2019-11-08 12:44:24.133 7fb0b7715b80 -1 mgr[py] Module not found: 'dashboard'
2019-11-08 12:44:24.133 7fb0b7715b80 -1 mgr[py] Traceback (most recent call last):
File "/usr/share/ceph/mgr/dashboard/__init__.py", line 38, in
from .module import Module, StandbyModule
File "/usr/share/ceph/mgr/dashboard/module.py", line 75, in
from .grafana import push_local_dashboards
File "/usr/share/ceph/mgr/dashboard/grafana.py", line 7, in
import requests
File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 58, in
from . import utils
File "/usr/lib/python2.7/site-packages/requests/utils.py", line 32, in
from .exceptions import InvalidURL
File "/usr/lib/python2.7/site-packages/requests/exceptions.py", line 10, in
from .packages.urllib3.exceptions import HTTPError as BaseHTTPError
File "/usr/lib/python2.7/site-packages/requests/packages/__init__.py", line 95, in load_module
raise ImportError("No module named '%s'" % (name,))
ImportError: No module named 'requests.packages.urllib3'
2019-11-08 12:44:24.133 7fb0b7715b80 -1 mgr[py] Class not found in module 'dashboard'
2019-11-08 12:44:24.133 7fb0b7715b80 -1 mgr[py] Error loading module 'dashboard': (2) No such file or directory
2019-11-08 12:44:24.134 7fb0b7715b80 1 mgr[py] Loading python module 'deepsea'
2019-11-08 12:44:24.197 7fb0b7715b80 -1 mgr[py] Module not found: 'deepsea'
2019-11-08 12:44:24.197 7fb0b7715b80 -1 mgr[py] Traceback (most recent call last):
File "/usr/share/ceph/mgr/deepsea/__init__.py", line 1, in
from .module import DeepSeaOrchestrator
File "/usr/share/ceph/mgr/deepsea/module.py", line 13, in
import requests
File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 58, in
from . import utils
File "/usr/lib/python2.7/site-packages/requests/utils.py", line 32, in
from .exceptions import InvalidURL
File "/usr/lib/python2.7/site-packages/requests/exceptions.py", line 10, in
from .packages.urllib3.exceptions import HTTPError as BaseHTTPError
File "/usr/lib/python2.7/site-packages/requests/packages/__init__.py", line 95, in load_module
raise ImportError("No module named '%s'" % (name,))
ImportError: No module named 'requests.packages.urllib3'
2019-11-08 12:44:24.198 7fb0b7715b80 -1 mgr[py] Class not found in module 'deepsea'
2019-11-08 12:44:24.198 7fb0b7715b80 -1 mgr[py] Error loading module 'deepsea': (2) No such file or directory
2019-11-08 12:44:24.198 7fb0b7715b80 1 mgr[py] Loading python module 'devicehealth'
2019-11-08 12:44:24.211 7fb0b7715b80 1 mgr[py] Loading python module 'influx'
2019-11-08 12:44:24.226 7fb0b7715b80 1 mgr[py] Loading python module 'insights'
2019-11-08 12:44:24.240 7fb0b7715b80 1 mgr[py] Loading python module 'iostat'
2019-11-08 12:44:24.254 7fb0b7715b80 1 mgr[py] Loading python module 'localpool'
2019-11-08 12:44:24.268 7fb0b7715b80 1 mgr[py] Loading python module 'orchestrator_cli'
2019-11-08 12:44:24.304 7fb0b7715b80 1 mgr[py] Loading python module 'pg_autoscaler'
2019-11-08 12:44:24.350 7fb0b7715b80 1 mgr[py] Loading python module 'progress'
2019-11-08 12:44:24.383 7fb0b7715b80 1 mgr[py] Loading python module 'prometheus'
2019-11-08 12:44:24.446 7fb0b7715b80 1 mgr[py] Loading python module 'rbd_support'
2019-11-08 12:44:24.523 7fb0b7715b80 1 mgr[py] Loading python module 'restful'
2019-11-08 12:44:24.674 7fb0b7715b80 1 mgr[py] Loading python module 'selftest'
2019-11-08 12:44:24.689 7fb0b7715b80 1 mgr[py] Loading python module 'status'
2019-11-08 12:44:24.714 7fb0b7715b80 1 mgr[py] Loading python module 'telegraf'
2019-11-08 12:44:24.737 7fb0b7715b80 1 mgr[py] Loading python module 'telemetry'
2019-11-08 12:44:24.784 7fb0b7715b80 -1 mgr[py] Module not found: 'telemetry'
2019-11-08 12:44:24.784 7fb0b7715b80 -1 mgr[py] Traceback (most recent call last):
File "/usr/share/ceph/mgr/telemetry/__init__.py", line 1, in
from .module import Module
File "/usr/share/ceph/mgr/telemetry/module.py", line 10, in
import requests
File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 58, in
from . import utils
File "/usr/lib/python2.7/site-packages/requests/utils.py", line 32, in
from .exceptions import InvalidURL
File "/usr/lib/python2.7/site-packages/requests/exceptions.py", line 10, in
from .packages.urllib3.exceptions import HTTPError as BaseHTTPError
File "/usr/lib/python2.7/site-packages/requests/packages/__init__.py", line 95, in load_module
raise ImportError("No module named '%s'" % (name,))
ImportError: No module named 'requests.packages.urllib3'
2019-11-08 12:44:24.784 7fb0b7715b80 -1 mgr[py] Class not found in module 'telemetry'
2019-11-08 12:44:24.784 7fb0b7715b80 -1 mgr[py] Error loading module 'telemetry': (2) No such file or directory
2019-11-08 12:44:24.784 7fb0b7715b80 1 mgr[py] Loading python module 'test_orchestrator'
2019-11-08 12:44:24.826 7fb0b7715b80 1 mgr[py] Loading python module 'volumes'
2019-11-08 12:44:24.940 7fb0b7715b80 1 mgr[py] Loading python module 'zabbix'
2019-11-08 12:44:24.957 7fb0b7715b80 -1 log_channel(cluster) log [ERR] : Failed to load ceph-mgr modules: ansible, dashboard, deepsea, telemetry
2019-11-08 12:44:24.961 7fb0a2b49700 0 ms_deliver_dispatch: unhandled message 0x5601d8ebaa00 mon_map magic: 0 v1 from mon.0 v2:172.16.138.26:3300/0 尝试pip手动安装模块，发现不管装什么插件都报错，通过升级python解决了pip安装问题：yum -y update python。
但pip安装ansible模块死活装不上，并且启动dashboard仍旧提示ImportError: No module named 'requests.packages.urllib3'
从日志上看，好像ceph mgr启用模块，原理上是python使用urllib3从网络上下载安装的，所以换个方向，先解决urllib3模块问题。
pip卸载urllib3，改用yum方式安装。
再次实时查看启用dashboard模块时的日志，tail -f /var/log/ceph/ceph-mgr.utyun-node2.log
终于如愿以偿，dashboard启用成功，并没有任何报错。
[root@utyun-node1 external-ceph]# ceph mgr module ls |more
{
"enabled_modules": [
"dashboard",
"iostat",
"pg_autoscaler",
"restful"
],
4. 小结
以下总结ceph nautilus开启dashboard的步骤：
mgr节点操作：
yum -y install ceph-mgr-dashboard
pip uninstall urllib3
yum install python-urllib3 -yceph管理节点操作：
ceph mgr module enable dashboard
ceph config set mgr mgr/dashboard/server_addr 0.0.0.0
ceph config set mgr mgr/dashboard/server_port 7000
ceph config set mgr mgr/dashboard/ssl false
ceph dashboard ac-user-create admin password administrator参考资料：
[1] https://docs.ceph.com/docs/nautilus/mgr/dashboard/