Re: [ovirt-users] hosted-engine Debug Help

I've attached a full debug packet below. I include the log file from ovirt-hosted-engine-setup. I include relevant cmd line info. I include info from the command line where epdb has a breakpoint in playbook.py from ansible itself. I also include info from commands I ran after it failed. I also include attached the ferried over script in /root/.ansible/tmp that is run. *Output on cmd line:* [ INFO ] TASK [Copy configuration archive to storage] [ ERROR ] fatal: [localhost]: FAILED! => { "changed": true, "cmd": [ "dd", "bs=20480", "count=1", "oflag=direct", "if=/var/tmp/localvmbCDQIR/5e f881f5-c992-48d2-b969-a0b6156bdf7c", "of=/rhev/data-center/mnt/nod e.local:_srv_data/81292f3f-11d3-4e38-9afa-62e133aa8017/image s/c5510e77-1ee0-479c-b6cf-24c179313a45/5ef881f5-c992- 48d2-b969-a0b6156bdf7c" ], "delta": "0:00:00.004336", "end": "2018-04-03 15:01:55.581823", "invocation": { "module_args": { "_raw_params": "dd bs=20480 count=1 oflag=direct if=\"/var/tmp/localvmbCDQIR/5ef881f5-c992-48d2-b969-a0b6156bdf7c\" of=\"/rhev/data-center/mnt/node.local:_srv_data/81292f3f-11d 3-4e38-9afa-62e133aa8017/images/c5510e77-1ee0-479c-b6cf- 24c179313a45/5ef881f5-c992-48d2-b969-a0b6156bdf7c\"", "_uses_shell": false, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "warn": true } }, "msg": "non-zero return code", "rc": 1, "start": "2018-04-03 15:01:55.577487", "stderr": "dd: failed to open ‘/rhev/data-center/mnt/node.lo cal:_srv_data/81292f3f-11d3-4e38-9afa-62e133aa8017/images/c5 510e77-1ee0-479c-b6cf-24c179313a45/5ef881f5-c992-48d2-b969-a0b6156bdf7c’: Permission denied", "stderr_lines": [ "dd: failed to open ‘/rhev/data-center/mnt/node.lo cal:_srv_data/81292f3f-11d3-4e38-9afa-62e133aa8017/images/c5 510e77-1ee0-479c-b6cf-24c179313a45/5ef881f5-c992-48d2-b969-a0b6156bdf7c’: Permission denied" ], "stdout": "", "stdout_lines": [] } [ ERROR ] Failed to execute stage 'Closing up': Failed executing ansible-playbook

*Output from ansible epdb tracepoint:* Using module file /usr/lib/python2.7/site-packages/ansible/modules/ commands/command.py <localhost> ESTABLISH LOCAL CONNECTION FOR USER: root <localhost> EXEC /bin/sh -c 'echo ~ && sleep 0' <localhost> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /root/.ansible/tmp/ansible-tmp-1522767715.36-81496549401055 `" && echo ansible-tmp-1522767715.36-81496549401055="` echo /root/.ansible/tmp/ansible-tmp-1522767715.36-81496549401055 `" ) && sleep 0' <localhost> PUT /tmp/tmpGMGdjh TO /root/.ansible/tmp/ansible- tmp-1522767715.36-81496549401055/command.py <localhost> EXEC /bin/sh -c 'chmod u+x /root/.ansible/tmp/ansible- tmp-1522767715.36-81496549401055/ /root/.ansible/tmp/ansible- tmp-1522767715.36-81496549401055/command.py && sleep 0' <localhost> EXEC /bin/sh -c '/usr/bin/python /root/.ansible/tmp/ansible- tmp-1522767715.36-81496549401055/command.py && sleep 0' to retry, use: --limit @/usr/share/ovirt-hosted- engine-setup/ansible/create_target_vm.retry The above command.py is the on I have attached as problematic_command.py *Investigation After Failure:* [root@node ~]# ls -al '/rhev/data-center/mnt/node.lo cal:_srv_data/81292f3f-11d3-4e38-9afa-62e133aa8017/images/c5 510e77-1ee0-479c-b6cf-24c179313a45/5ef881f5-c992-48d2-b969-a0b6156bdf7c' -rw-rw----. 1 vdsm kvm 20480 Apr 3 15:01 /rhev/data-center/mnt/node.loc al:_srv_data/81292f3f-11d3-4e38-9afa-62e133aa8017/images/c55 10e77-1ee0-479c-b6cf-24c179313a45/5ef881f5-c992-48d2-b969-a0b6156bdf7c sudo -u vdsm dd bs=20480 count=1 oflag=direct if="/var/tmp/localvmbCDQIR/5ef881f5-c992-48d2-b969-a0b6156bdf7c" of="/rhev/data-center/mnt/node.local:_srv_data/81292f3f-11d3 -4e38-9afa-62e133aa8017/images/c5510e77-1ee0-479c-b6cf- 24c179313a45/5ef881f5-c992-48d2-b969-a0b6156bdf7c 1+0 records in 1+0 records out It seems to me that somehow it is not getting the right permissions even though the playbook has: - name: Copy configuration archive to storage command: dd bs=20480 count=1 oflag=direct if="{{ LOCAL_VM_DIR }}/{{ he_conf_disk_details.disk.image_id }}" of="{{ he_conf_disk_path }}" become_user: vdsm become_method: sudo changed_when: True tags: [ 'skip_ansible_lint' ] On Tue, Apr 3, 2018 at 8:51 AM, RabidCicada <rabidcicada(a)gmail.com&gt; wrote: > I am now also running with: > > export ANSIBLE_VERBOSITY=5 > > export ANSIBLE_FORKS=1 > > export ANSIBLE_KEEP_REMOTE_FILES=1 > > > On Tue, Apr 3, 2018 at 8:49 AM, RabidCicada <rabidcicada(a)gmail.com&gt; > wrote: > >> Here's the log. >> >> So the command that it says it ran is: >> dd bs=20480 count=1 oflag=direct if=/var/tmp/localvmHaWb6G/1cce >> 8df2-1810-4063-b4e2-e19a2c5b1909 of=/rhev/data-center/mnt/node. >> local:_srv_data/3c7485ea-14e3-40c1-b627-f89a819ed1d6/images/ >> 2c1f7c2f-b8f7-46d4-ac66-8ff1e9649e29/1cce8df2-1810-4063-b4e2 >> -e19a2c5b1909 >> >> But we all know that was done with: >> >> - name: Copy configuration archive to storage >> command: dd bs=20480 count=1 oflag=direct if="{{ LOCAL_VM_DIR }}/{{ >> he_conf_disk_details.disk.image_id }}" of="{{ he_conf_disk_path }}" >> become_user: vdsm >> become_method: sudo >> changed_when: True >> tags: [ 'skip_ansible_lint' ] >> >> So I manually replicated with `sudo vdsm dd bs=20480 count=1 >> if=/var/tmp/localvmHaWb6G/1cce8df2-1810-4063-b4e2-e19a2c5b1909 >> of=/rhev/data-center/mnt/node.local:_srv_data/3c7485ea-14e3- >> 40c1-b627-f89a819ed1d6/images/2c1f7c2f-b8f7-46d4-ac66-8ff1e9 >> 649e29/1cce8df2-1810-4063-b4e2-e19a2c5b1909` >> >> And it works when I manually do it. Though I think I didn't use the >> oflag=direct (Just realised this) >> >> I eventually put a pause task directly preceeding it with debug output >> that showed the file paths. I manually ran the command and it worked. >> Then let it do it....failed. I checked all the permissions e.g. >> vdsm:kvm. All looks good from a filesystem point of view. I'm beginning >> (naively) to suspect a race condition for the file access problem...but >> have come nowhere close to solving it. >> >> *Can you suggest a good way to continue executing the install process >> from the create_target_vm.yml playbook (with proper variables and context >> from otopi etc)?* I currently have to restart the entire process over >> again and wait quite a while for it to circle back around. >> >> I have since discovered epdb and I've set breakpoints directly in >> playbook.py of ansible just to see better log output. I insert epdb.serve >> and use netcat to connect since epdb on python 2.7.5 and up seems to have >> problems using epdb.connect() itself. >> >> ~Kyle >> >> On Tue, Apr 3, 2018 at 4:06 AM, Simone Tiraboschi <stirabos(a)redhat.com&gt; >> wrote: >> >>> >>> >>> On Mon, Apr 2, 2018 at 4:52 PM, RabidCicada <rabidcicada(a)gmail.com&gt; >>> wrote: >>> >>>> Heyo everyone. I'm trying to debug hosted-engine --deploy. It is >>>> failing in `Copy configuration archive to storage` in >>>> `create_target_vm.yml` from `hosted-engine --deploy`. My general and >>>> most important query here is how to get good debug output from ansible >>>> through hosted-engine. I'm running hosted-engine through an ssh session. >>>> >>>> I can't figure out how to get good debug output from ansible within >>>> that workflow. I see it's running through otopi, I tried setting >>>> typical `debugger: on_failed` hooks etc and tried many incantations on the >>>> command line and config files to get ansible to help me out. The >>>> debugger: directive and other debugger related ansible config file stuff >>>> wouldn't result in any debugger popping up. I also can't seem to pass >>>> normal -vvvv flags to hosted-engine either and get it to ansible. >>>> Ultimately I tried to use a `pause` directive and it complained that it was >>>> in a non-interactive shell. I figured it might be the result of my ssh >>>> session so I enabled tty allocation with -t -t. It did not resolve the >>>> issue. >>>> >>>> I eventually wrote-my-own/stole a callback_plugin that checks an >>>> environmental variable and enables `display.verbosity = int(v)` since I >>>> can't seem to pass typical -vvvv stuff to ansible through `hosted-engine >>>> --deploy`. It give me the best info that I have so far. But it wont give >>>> me enough to debug issues around Gathering Facts or what looks like a >>>> sudo/permission problem in `Copy configuration archive to storage` in >>>> `create_target_vm.yml`. I took and used the exact command that they use >>>> manually and it works when I run it manually (But I can't get debug output >>>> to show me the exact sudo command being executed), hence my interest in >>>> passing -vvvv or equivalent to ansible through `hosted-engine`. I >>>> intentionally disabled the VM_directory cleanup so that I could execute the >>>> same stuff. >>>> >>>> So....after all that...what is a good way to get deep debug info from >>>> hosted-engine ansible stuff? >>>> >>> >>> You should already find all the relevant log entries in a file >>> called /var/log/ovirt-hosted-engine-setup/ovirt-hosted-engin >>> e-setup-ansible-create_target_vm-{timestamp}-{hash}.log >>> >>> Can you please share it? >>> >>> >>>> >>>> Or does anyone have intuition for the possible sudo problem? >>>> ~Kyle >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>> >> >