September 2020 - ceph-users

How to working with ceph octopus multisite-sync-policy

by system.engineer.mon＠gmail.com

Dear All I build 2 ceph poc cluster My ceph version is octopus 15.2.4 with centos 8 I configure ceph multisite is working Cluster_1 realm 20f3a458-b0d4-4699-b8f7-75411366c635 (global) zonegroup 94b70bdb-1492-49b7-8cda-210d3552ecd2 (data) zone bb4106bc-6a01-44e7-be53-ce8c5dbbce97 (hy-1) metadata sync no sync (zone is master) data sync source: 36373df5-bcd8-4eea-954b-3b6158d57c80 (hy-2) syncing full sync: 0/128 shards incremental sync: 128/128 shards data is caught up with source Cluster_2 realm 20f3a458-b0d4-4699-b8f7-75411366c635 (global) zonegroup 94b70bdb-1492-49b7-8cda-210d3552ecd2 (data) zone 36373df5-bcd8-4eea-954b-3b6158d57c80 (hy-2) metadata sync syncing full sync: 0/64 shards incremental sync: 64/64 shards metadata is caught up with master data sync source: bb4106bc-6a01-44e7-be53-ce8c5dbbce97 (hy-1) syncing full sync: 0/128 shards incremental sync: 128/128 shards data is caught up with source 2 Cluster is Active/Active Create bucket in cluster_1 => It automatic sync to cluster_2 Create bucket in cluster_2 => It automatic sync to cluster_1 Put data in bucket cluster_1 => It automatic sync to bucket in cluster_2 Put data in bucket cluster_2 => It automatic sync to bucket in cluster_1 I try configure example_3 and example_4 but not working https://docs.ceph.com/docs/master/radosgw/multisite-sync-policy/ Anyone, Can help or recommend me ? Best Regrads, Engineer_Mon

3 years, 7 months

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Problem with /etc/ceph/iscsi-gateway.cfg checksum

by Matthias Leopold

Hi, I'm preparing three Ceph Nautilus nodes as iSCSI gateways following this documentation: https://docs.ceph.com/docs/nautilus//rbd/iscsi-overview/. For some reason rbd-target-api for one node doesn't agree on /etc/ceph/iscsi-gateway.cfg although "sha256sum /etc/ceph/iscsi-gateway.cfg" is the same: ~$ ssh -l root tentakel4 "sha256sum /etc/ceph/iscsi-gateway.cfg" e65444a15bbe9a115fd27040233883b681226e922367f7c61f7378d596ed12fd /etc/ceph/iscsi-gateway.cfg ~$ ssh -l root tentakel5 "sha256sum /etc/ceph/iscsi-gateway.cfg" e65444a15bbe9a115fd27040233883b681226e922367f7c61f7378d596ed12fd /etc/ceph/iscsi-gateway.cfg ~$ ssh -l root tentakel6 "sha256sum /etc/ceph/iscsi-gateway.cfg" e65444a15bbe9a115fd27040233883b681226e922367f7c61f7378d596ed12fd /etc/ceph/iscsi-gateway.cfg ~$ curl --user foo:bar -X GET http://tentakel4:5000/api/sysinfo/checkconf { "data": "110a32477ca026225bceab337535e0cad522d8ea10e69922e1ef9412331b8d94" } ~$ curl --user foo:bar -X GET http://tentakel5:5000/api/sysinfo/checkconf { "data": "faee0b958ea8f1bcbfaae4a40ca247af2271d439b54fa345be5a3fa2283dcc84" } ~$ curl --user foo:bar -X GET http://tentakel6:5000/api/sysinfo/checkconf { "data": "110a32477ca026225bceab337535e0cad522d8ea10e69922e1ef9412331b8d94" } On tentakel5 I'm constantly seeing "INFO [rbd-target-api:2821:run()] - Change detected - internal 0 / xattr 21 refreshing" in /var/log/rbd-target-api/rbd-target-api.log Can somebody give me a hint how to fix this? Software: - CentOS 7.8 - ceph-iscsi-3.4-1.el7.noarch - tcmu-runner-1.5.2-1.el7.x86_64 - sestatus: permissive thx Matthias

3 years, 7 months

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Error in OS causing Epson Error Code 0x97 pop up? Get to assistance.

by mary smith

The OS can have some compatibility issues with the printer and that might result in Epson Error Code 0x97. Therefore, to deal with the issue you can use the help steps that are mentioned in the tech consultancy sites or you can also get the issue resolved by using the assistance that is available in the tech videos. https://www.epsonprintersupportpro.net/epson-error-code-0x97/

3 years, 7 months

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cephadm didn't create journals

by Darrin Hodges

HI all, I have created a new cephs cluster using the cephadm command and it appears to work very well. I tried to specify using an ssd for the journals but it doesn't appear to have worked. My yaml file is: service_type: osd service_id: default_drive_group placement: host_pattern: 'ceph-osd0[1-4]' journal_devices: rotational: 0 data_devices: rotational: 1 encrypted: true all of the osd's were created but it appears the journals are on each disk rather than the ssd. Can I add journals after the fact with cephadm ? Are they even still a thing? thanks Darrin -- CONFIDENTIALITY NOTICE: This email is intended for the named recipients only. It may contain privileged, confidential or copyright information. If you are not the named recipients, any use, reliance upon, disclosure or copying of this email or any attachments is unauthorised. If you have received this email in error, please reply via email or telephone +61 2 8004 5928.

3 years, 7 months

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10 Helpful Applications for Students

by elianajones117＠gmail.com

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3 years, 7 months

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how to write a good essay

by 27nick1993＠gmail.com

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3 years, 7 months

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Release mental stress using Hong Kong Assignment help

by james wick

Many students can’t complete their assignments within the assigned date because of some unavoidable circumstances in Hong Kong. It’s true that your mental stress raises hindrance and disturbs your concentration for your work. Because of stress and tension, you will not have enough thoughts to make your work effective. This situation directs you to the platform of Assignment Help services even in Hong Kong. This is because an unstable mind could not generate the right ideas to compose a worthy assignment. Make your assignment informative and productive using the online writing services of assignment experts. Professionals have a better understanding of the subject and know how to frame all information in the right format. So, you can use online assignment help when you have issues in composing your academic papers irrespective of any subject. https://www.greatassignmenthelp.com/hk/

3 years, 7 months

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How to deal with "inconsistent+failed_repair" pgs on cephfs pool ?

by Kári Bertilsson

Hello I have a couple of pgs with inconsitent+failed_repair after trying "ceph pg repair" on them. All the OSD's are using bluestore. These pgs belong to an erasure coded pool that runs cephfs. I did manage to find details about which objects are inconsistent by using the "rados list-inconsistent-obj pgid --format=json-pretty" But I am wondering how to find which files the corrupt objects belong to ? Also since I am guessing there is no way to recover these objects i will need to delete them to get back to active+clean status. What is the best way to delete the corrupt objects ? Best regards, Kári

3 years, 7 months

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Messenger v2 and IPv6-only still seems to prefer IPv4 (OSDs stuck in booting state)

by Wido den Hollander

Hi, Last night I've spend a couple of hours debugging a issue where OSDs would be marked as 'up', but then PGs stayed in the 'peering' state. Looking through the admin socket I saw these OSDs were in the 'booting' state. Looking at the OSDMap I saw this: osd.3 up in weight 1 up_from 26 up_thru 700 down_at 0 last_clean_interval [0,0) [v2:[2a05:xx0:700:2::7]:6816/7923,v1:[2a05:xx:700:2::7]:6817/7923,v2:0.0.0.0:6818/7923,v1:0.0.0.0:6819/7923] [v2:[2a05:xx:700:2::7]:6820/7923,v1:[2a05:1500:700:2::7]:6821/7923,v2:0.0.0.0:6822/7923,v1:0.0.0.0:6823/7923] exists,up 786d3e9d-047f-4b09-b368-db9e8dc0805d In ceph.conf this was set: ms_bind_ipv6 = true public_addr = 2a05:xx:700:2::6 On true IPv6-only nodes this works fine. But on nodes where there is also IPv4 present this can (and will?) cause problems. It did not use tcpdump/wireshark to investigate, but it seems that the OSDs tried to contact each other. Using the 0.0.0.0 IPv4 address. After adding these settings the problems were resolved: ms_bind_msgr1 = false ms_bind_ipv4 = false This also disables msgrv1 as we didn't need it here. A cluster and clients all running Octopus. The OSDMap now showed: osd.3 up in weight 1 up_from 704 up_thru 712 down_at 702 last_clean_interval [26,701) v2:[2a05:xx:700:2::7]:6804/791503 v2:[2a05:xx:700:2::7]:6805/791503 exists,up 786d3e9d-047f-4b09-b368-db9e8dc0805d OSDs can back right away, PGs peered and the problems were resolved. Wido

3 years, 7 months

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Tips for Taking a Semester off From College

by serene.banks3＠gmail.com

For most students, faculty may be the top 4 or 5 decades in their lives. But, in addition, there are many students who get to school and begin to experience burnout or confusion on what they wish to do after college. Sometimes this may result in falling grades, or pupils questioning whether going to school was even the correct choice for them. In some specific situations, some individuals have even taken a semester off so as to recharge their batteries regain focus in their research. Even though this may be a good thing to do, it may also be a challenging choice to describe to parents, loved ones, friends, and fellow pupils. Listed here are tips/strategies for folks to make the most of their off time before going back to school to receive their level. In case you decide you wish to take some time off from college to clean your mind, you need to produce a plan to be able to market the idea for your parents. The strategy won't simply set their mind at ease, but additionally, it will be something which you can return on during the session to keep you on course. You should think about your strategy nearly just like a business program. Be certain you account for the motives which you're taking time off and everything you intend on doing during each period of the time off from college. It'll be an additional bonus if you're able to describe what sorts of lessons you'll be studying during every stage. Don't underestimate how important with a strategy could be. Parents may initially see your session off with stress since they will fear you will eliminate motivation to return to college. They generally have a substantial monetary investment tied to your academic achievement. And of course that the deficiency of a strategy will also cause an absence of private attention and inspiration on your own end. Obtain Work, Gain Expertise The very best thing you may do during your off time is get work. Whether it's paid or unpaid, awaken each morning and operate. The job doesn't need to be fulltime and if you're creative it doesn't even need to be working for someone else. There are loads of students who've tried their hands small start-up companies with varying levels of success. The most important goal regardless of what you are doing would be to obtain expertise and transferable skills which you can add to a resume. The occupation skills are not only going to help you build career-wise, but also give you a hand in interviews once it is possible to bet you will be asked the reason you chose off a semester and everything you did during this period of time. Your short term job might even allow you to concentrate on a profession or career path you had not considered before your fracture. Among the most difficult things to do throughout time away from faculty is to keep your brain self-evident. Though your classmates are ongoing to move to class, take examinations, and also write term papers, you'll be away in your grind doing something entirely different. To be able to keep on creating the intellectual portion of your mind, you need to keep on reading anything that's near you. Whether it's a paper, book, or something from the New York Times bestseller list, browse it. Whenever you're finished reading it, then attempt and find someone to talk about it with this it is possible to keep on practicing your critical thinking abilities. Do to do your very best to stay current with current affairs. View the news sometimes, or see websites like CNN to remain fresh on what's happening in the world. Another positive point to do would be create a reading list of publications inside your major. From the time you contact school, you'll be armed with knowledge and questions your classmates might not have . Preventing your intellectual side is only going to result in you needing to prevent return to college afterwards, which will only cause an overall demanding transition back to school. Among the gorgeous things about being at school is being subjected to various individuals from so many diverse areas. When you take off your time, it's very likely that you will return to exactly the identical region which you just grew up in, and also the exact very same thoughts to which you're constantly exposed previously. If you can, attempt to discover some opportunity to traveling to other regions throughout your break. It can wind up as a large trip to Europe or the Caribbean, or it might only be a trip from state to go to some relatives. In any circumstance, the excursion won't just keep you thrilled, but additionally, it will expand your horizons. Have a little time to take new areas of interest and speak to as many individuals as possible from the new places. In the end, it might never be as simple to travel as soon as you're back in school or the working world, take advantage of it. . .To Everybody During the time you're not at college, go out of the way to speak to as many individuals as you can. Speak with your parents. Speak with your pals. Speak with your loved ones. Speak with your classmates back in college. These new folks will let you break from your typical school social bubble, and also be exposed to new methods of believing. As tempting as it might be, don't sit home all day and play games or even watch tv. The very best approach to find out more about yourself is by interacting with different individuals in the external world. If you falling your semester maybe you need to use one of the official essay writing services like writepaperforme.review https://writepaperforme.review/

3 years, 8 months

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ceph-users September 2020