Ceph remove stray daemon. This is useful, if you do not want this service to .

Ceph remove stray daemon An unhealthy storage cluster is one that has placement groups persistently in not active + clean state. stray host ceph2 has 1 stray daemons: ['mon. ceph mgr dump command The ceph orch host rm command does not remove the Ceph daemons in the host of a Red Hat Ceph Storage cluster. 04 LTS; 7cdf3e2c-b05e-4c77-bfec-e4fcc4bd3a84 health: HEALTH_OK services: mon: 1 daemons, quorum node01 (age 58m) mgr: node01(active, since 25m) mds: 1/1 daemons up osd: 4 osds: 4 up Follow the steps in Removing Monitors from an Unhealthy Cluster. pech-mds-1 on host pech-cog-1 not managed by cephadm The strange thing is daemon mon. For the MDS, this generally means limiting its cache size. The ceph orch host rm command does not provide any output. <foo> perf dump) useful. It is normally specified via the For stateless daemons, it is usually easiest to provision a new daemon with the ceph orch apply command and then stop the unmanaged daemon. All Projects This is the first stable release of Ceph Octopus. All the daemons are removed with the drain option which adds the _no_schedule label to ensure that you cannot deploy any daemons or a cluster till the operation is complete. The procedure might result in a Ceph cluster that contains only two monitor daemons. Updated 7 days ago. MON/MGR: Pools can now be created with --bulk flag. 7 mgr, (ceph mgr fail <name>) and then deleted it (ceph orch daemon rm mgr. A comma-separated list of Ceph OSD daemons to remove while keeping the rest and the entire node as part of the cluster. If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: cephadm does not try to manage any daemons started by vstart. when restat mds. This may be because they were deployed using a different tool, or because they were started manually. Remove stray ‘v’ in version (pr#7936, Dan Mick) debian/changelog: Remove stray ‘v’ in version (pr#7938, Dan Mick) debian: include cpio in build-requiers (pr#7533, Rémi BUISSON) When you remove Ceph daemons and uninstall Ceph, there may still be extraneous data from the cluster on your server. However, those Typically, an OSD is a Ceph ceph-osd daemon running on one storage drive within a host machine. The cache serves to improve metadata access latency and allow clients to safely (coherently) mutate metadata state (e. Edit online. Once the node is removed, the cluster is also rebalanced to account for the changes. It may take a minute or two for this to complete, depending on The newly created rank (1) will pass through the ‘creating’ state and then enter this ‘active state’. This might result in a CEPHADM_STRAY_HOST warning. but i got a health warning root@pech-mon-1:~# ceph health detail HEALTH_WARN 1 stray daemon(s) not managed by cephadm [WRN] CEPHADM_STRAY_DAEMON: 1 stray daemon(s) not managed by cephadm stray daemon mon. com. Options --image IMAGE . You can manage the host(s) with the ceph orch host add HOST_NAME Adding and removing Ceph OSD Daemons to your cluster may involve a few more steps when compared to adding and removing other Ceph daemons. This image will soon become an The balancer mode can be changed from upmap mode to crush-compat mode. You can monitor Ceph’s activity in real time by reading the logs as they fill up. Viewing and editing the configuration of the Ceph cluster on the dashboard; 6. If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: Add/Remove Metadata Server¶ With ceph-deploy, adding and removing metadata servers is a simple task. 665310Z So - I managed to do this finally, and I have a quorum again. Placement and all other properties will be ignored. Stray Demon Information. ceph orch apply mon srv3 ceph mon remove srv3 576 ceph orch daemon add mon srv2:172. Purge Data¶ To remove all data from /var/lib/ceph (but leave Ceph packages intact), execute the purgedata command. In both cases, you can also specify a daemon type or a daemon instance. It's an MDS daemon for a file system that I created, realized I made it in replication mode instead of EC, and then deleted (via the CLI defaults). , this is the most common configuration, but you may configure your This can be combined with service specifications to create a cluster spec file to deploy a whole cluster in one command. Is there a way to manually clear this alert? 1 daemons have recently crashed osd. According to the official documentation, the iSCSI gateway is in maintenance as of November 2022. These hosts will be listed with this command. The stray daemon/host warning is roughly equivalent to comparing the daemons in `ceph node ls` and `ceph orch ps` and seeing if there's anything in the former but not the latter. This section of the documentation goes over stray hosts and cephadm. see cephadm bootstrap--apply-spec also to do this during bootstrap. Manually Deploying a Manager Daemon . You can manage the host(s) with the ceph orch host add HOST_NAME Redmine. This is useful, if you do not want this service to When you want to reduce the size of a cluster or replace hardware, you may remove an OSD at runtime. sh (any nonzero number in the environment variables). storage1 Watching cephadm log messages¶ Cephadm logs to the cephadm cluster log channel, Cephadm deploys daemons within containers. The name is used to identify daemon instances in the ceph. . Not generally required, but I find it CEPHADM_STRAY_HOST. Can also be set via the “CEPHADM_IMAGE” env var To disable the warning, you can disable auto-scaling of PGs for the pool entirely with: cephuser@adm > ceph osd pool set POOL-NAME pg_autoscale_mode off. Before you begin the process of removing an OSD, CentOS Stream 9 Ceph Squid Add or Remove Monitors. Example [ceph: root@host01 /]# ceph orch apply mgr "2 host01 host03" When you add Ceph OSDs to a cluster or remove them from the cluster, the CRUSH algorithm rebalances the cluster by moving placement groups to or from Ceph OSDs to restore the balance. Ceph Manager (ceph-mgr). As the adoption process progresses, adopted daemons will appear with a style of cephadm:v1. ceph2. Even with multiple active MDS daemons, a highly available system still requires standby daemons to take over if any of the servers running an active daemon fail. A Ceph Storage Cluster runs at least three types of daemons:. `hostname -s` perf dump | grep num_stray" to ensure the value remains under 2000000. In case there are more than three daemons deployed, cephadm will remove existing daemons. , this is the most common configuration, but you may configure your To see the status of one of the services running in the Ceph cluster, do the following: Use the command line to print a list of services. restart ceph-mds 6. It seems the only option is to remove the host and re-add it. cephadm does not rely on external configuration tools like Ansible, Rook, or Salt. The idea behind this method is to replace several python mgr folders in each of the ceph daemons with the source code folders in your host machine. I'm not sure how to get rid of them - I haven't found a document page from ceph yet at Typically, an OSD is a Ceph ceph-osd daemon running on one storage drive within a host machine. If the last remaining Manager has been removed from the Ceph cluster, follow these steps in order to deploy a fresh Manager on an arbitrary host in your cluster. You’ll see health warnings from cephadm about stray daemons–that’s because the vstart-launched daemons aren’t controlled by cephadm. A new deployment tool called cephadm has been introduced that integrates Ceph daemon deployment and management via containers into the orchestration layer. One or more Ceph daemons are running but not are not managed by cephadm. Health checks are run when the Cephadm module is active. If the value is near 2000000, increasing "mds_bal_fragment_size_max 400000" Also add the desired configuration to the ceph. 0 in the GUI with status and Address "Unknown". Likewise, each time you start, restart, or stop your entire cluster, you must specify at least one option and one command. osd: osd/ReplicatedPG: remove stray debug line (issue#13455, pr#6362, Sage Weil) tests: qemu workunit refers to apt-mirror. Ceph clients and other Ceph daemons use ceph. Moving all three monitors would thus require repeating this process as many times as needed. Basically the same as ceph/ceph, but with different tags. But I think the num_strays is zero. Ensure that mon. This is useful, if you do not want this service to OSDs created using ceph orch daemon add or ceph orch apply osd--all-available-devices are placed in the plain osd service. MDS Cache Configuration . Added by Sridhar Seshasayee 4 months ago. cephadm can update Ceph containers. Table Of Contents. Disable the Cephadm scheduler to prevent Cephadm from removing the new MGR daemon, with the following command: Example [ceph: root@host01 /]# ceph config-key set mgr/cephadm When examining the output of the ceph df command, pay special attention to the most full OSDs, as opposed to the percentage of raw space used. For stateless daemons, it is usually easiest to provision a new daemon with the ceph orch apply command and then stop the unmanaged daemon. Admin Interaction The ceph orch command will be Run the ceph orch apply command to redeploy the required manager daemons: Syntax ceph orch apply mgr "NUMBER_OF_DAEMONS HOST_NAME_1 HOST_NAME_3" If you want to remove manager daemons from host02, then you can redeploy the manager daemons on other hosts. cephadm rm-cluster --fsid FSID [--force] Configuring Ceph . Standby daemons . The option osd_memory_target sets OSD memory based upon the available RAM in the system. The Metadata Server coordinates a distributed cache among all MDS and CephFS clients. To add more monitors until there are enough ceph-mon daemons to establish quorum, repeat the Traditionally, Ceph daemons have logged to /var/log/ceph. This is actually the first demon you see in the game; as you exit your cell at the beginning he can be seen stomping around to your right through the bars in the Description . 3 577 history | grep dump 578 ceph mon dump 579 ceph -s 580 ceph mon dump 581 ceph mon add srv3 172. cluster: id: 7cdf3e2c-b05e-4c77-bfec-e4fcc4bd3a84 health: HEALTH_OK services: mon: 2 daemons, quorum node01,node04 (age 7s) mgr: node01(active, since 37m) osd: 3 osds: 3 up (since 7m), 3 in (since 11m) rgw: 1 daemon active (1 hosts, 1 zones) data: pools: 6 pools, 161 pgs objects: 198 CEPH Filesystem Users — Re: Stray host/daemon. Had to remove it manually from command line and removing systemd symlink. Note that all of the -devel tags (and the latest-master tag) are based on unreleased and generally untested packages from https://shaman. We recommend all users update to this release. Disable cephadm completely by running the following commands:. 3. pech-mds-1 has never run on pech-cog-1. Starting a Development-mode Ceph Cluster Once these are acknowledged, implicitly flushing the bystander to exporter message streams of any stray expiration notices, the exporter unfreezes the subtree, cleans up its The procedure in this section creates a ceph-mon data directory, retrieves both the monitor map and the monitor keyring, and adds a ceph-mon daemon to the cluster. Managing Ceph daemons. I failed the cluster's active mgr daemon over to the standby, 16. 0. The --yes-i-really-mean-it flag bypasses all safety checks and will attempt to force the host into maintenance mode no matter what. Only the monitor daemon on mon1 gets removed. Cephadm . Major Changes from Nautilus ¶ General ¶. I've got a single stray daemon that has persisted even between physical server reboots. Health alerts can now be muted, either temporarily or permanently. 4, follow the steps in Adding a Monitor (Manual) by adding a new monitor mon. Run the following command to see the logs in real time: ceph-W cephadm. 2. If Red Hat Ceph Storage is deployed on dedicated nodes that do not share memory with other services, cephadm automatically adjusts the per-OSD consumption based Typically, an OSD is a Ceph ceph-osd daemon running on one storage drive within a host machine. For Ceph to determine the current state of a PG, peering must take place. This may be because they were When you add Ceph OSDs to a cluster or remove them from the cluster, the CRUSH algorithm rebalances the cluster by moving placement groups to or from Ceph OSDs to restore the balance. front. Throttling . To remove a host from a cluster, do the following: For all Ceph service types, except for node-exporter and crash, remove the host from the # ceph -s cluster: id: 6cf878a8-6dbb-11ea-81f8-fa163e09adda health: HEALTH_WARN 1 stray daemons(s) not managed by cephadm services: mon: 1 daemons, quorum host1 (age 12m) mgr: host1. cephadm is a utility that is used to manage a Ceph cluster. To change mon. x (luminous) Ceph release, the ceph-mgr daemon is required for normal operations. You just add or remove one or more metadata servers on the command line with one command. The other daemons running on mon1 are untouched. We recommend deploying several instances of ceph-mgr for reliability. In case the last mgr daemon of a Red Hat Ceph Storage cluster was removed, you can manually deploy a mgr daemon, on a random host of the Red Hat Ceph Storage cluster. Before you begin the process of removing an OSD, Enable or disable modules using the commands ceph mgr module enable <module> and ceph mgr module disable <module> respectively. This means that those services are not currently managed by Cephadm, for example, a restart and upgrade that is included in the ceph orch ps command. via chmod). If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: ceph osd purge {id} --yes-i-really-mean-it ceph osd crush remove {name} ceph auth del osd. conf to discover monitors. See the notes on `Upgrading`_ below. ceph-volume - Bug #58812: ceph-volume prepare doesn't use partitions as-is anymore: Actions: mgr - Bug #58832: ceph-mgr package installation fails on centos 9: Actions: rgw - Bug #58908: Keystone EC2 auth does not support STREAMING-AWS4-HMAC-SHA256-PAYLOAD: Actions: mgr - Bug #58924: mgr: block register_client on new MgrMap: Actions When I remove mon3 from my cluster with `ceph orch host rm mon3. You can remove a ceph-mon daemon from an unhealthy storage cluster. At least one Manager (mgr) daemon is required by cephadm in order to manage the cluster. conf i have # ceph orch ps --daemon-type mds. One or more hosts have running Ceph daemons but are not registered as hosts managed by the Cephadm module. Remove a Metadata Server The newly created rank (1) will pass through the ‘creating’ state and then enter this ‘active state’. Remove mon. One or more instances of ceph-mon form a Paxos part-time parliament cluster that provides extremely reliable and durable storage of cluster membership, configuration, and state. 4 $ ansible pech -u root -m shell -a "podman ps" | grep ceph | awk '{ print $NF }' | egrep -v "osd|node|crash" | sort ceph-<fsid>-alertmanager. You can get the following health warnings: CEPHADM_PAUSED. Troubleshooting containerized daemons requires a different process than does troubleshooting traditional daemons that were installed by means In this case the daemons are Mon daemons. The process of migrating placement groups and the objects they contain can reduce the cluster operational performance considerably. Daemon actions; 6. Red Hat Ceph Storage If it is added to an existing host that already contains Ceph daemons, it will cause cephadm to move those daemons elsewhere (except OSDs, which are not removed automatically). If /etc/ceph/ceph. Requirements. In the case of modules that provide a service, such as an HTTP server, the module may publish its address when it is loaded. If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: CEPHADM_STRAY_HOST. cephadm can remove a Ceph container from the cluster. Setting the initial CRUSH location of host . Then, in case there are less than three daemons deployed on the candidate hosts, cephadm will then then randomly choose hosts for deploying new daemons. But why isn't my containerized ceph cluster seeing that my count:2 for mgr daemons, and creating a new one? This can be combined with service specifications to create a cluster spec file to deploy a whole cluster in one command. cephadm is not required on all hosts, but useful when investigating a particular daemon. Just a heads up you can do those steps and then add an OSD back into the cluster with the same ID using the --osd-id option on ceph-volume. Use this procedure to reduce the size of a cluster. g. If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: I have a Ceph warning in the PVE UI that won't resolve. <name>) Great: ceph versions now shows everything is at 16. I deleted the old service definition. Sometimes I have seen the mgr will have some out of data Stray Demon is a Boss in Dark Souls. CLEAN_ORPHANS: To see the status of one of the services running in the Ceph cluster, do the following: Use the command line to print a list of services. I am little bit confused from the cl260 student guide. Intro to Ceph For stateless daemons, it is usually easiest to provision a new daemon with the ceph orch apply command and then stop the unmanaged daemon. ceph. New features will not be provided. Consequently, the practical maximum of max_mds for highly available systems is at most one This is the thirteenth backport release in the Pacific series. But now i still have mon. conf is identical on all hosts, then the following command can be run on one host and will take effect for all hosts: Ceph Manager Daemon . However, monitors discover each other using the monitor map, not ceph. If the daemons are moved to ceph4 or ceph5, then the cluster is healthy. xxx. 04 LTS; Ubuntu 22. Consequently, the practical maximum of max_mds for highly available systems is at most one Ceph is an open-source software-defined storage system. Other monitors (mon. In either case, our general strategy for removing the pg is to atomically set the metadata objects (pg->log_oid, pg->biginfo_oid) to backfill and asynchronously remove the pg collections. The number of objects dropped to 7 after the mds restart. Adoption process¶ Make sure that the ceph configuration has been migrated to use the cluster config database. The Ceph Manager daemon (ceph-mgr) runs alongside monitor daemons, to provide additional monitoring and interfaces to external monitoring and management systems. This looks to require draining the The --force flag on the enter command allows the user to bypass warnings (but not alerts). Here is a list of some of the things that cephadm can do:. stop and remove the legacy MDS daemons: # systemctl stop ceph-mds. If the /etc/ceph/ceph. 176 on host xxx. sepia. conf . , ceph df) may block. All daemons running on mon3 are also untouched. ID ceph orch daemon rm osd. The ceph-mgr daemon is an optional component in the 11. As the adoption process progresses, adopted daemons will appear with the style cephadm:v1. in to mds-client. Alternatively, if your host machine has multiple storage drives, you might need to remove multiple ceph-osd daemons: one daemon for each drive on the machine. c to host04 with the IP address 10. [node*] perf dump |grep strays. To disable the warning, you can disable auto-scaling of PGs for the pool entirely with: cephuser@adm > ceph osd pool set POOL-NAME pg_autoscale_mode off. Status: Pending Backport ceph-qa-suite: Pull request ID: 58126. It provides object, block, and file storage in a unified system. Hosts can contain a location identifier which will instruct cephadm to create a ceph-mgr: There is a new daemon, ceph-mgr, which is a required part of any Ceph deployment. Managing Ceph daemons; 5. conf. Generally, it’s a good idea to check the capacity of your cluster to see In general, you should set up a Ceph Manager on each of the hosts running the Ceph Monitor daemon to achieve same level of availability. Before you can write data to a PG, it must be in an active state and it will preferably be in a clean state. For example, if you refer to Adding a Monitor (Manual) you will see that you need to obtain the current monmap for the cluster when creating a new monitor, as it is one of the required arguments of This procedure describes how to remove a Ceph node from the Ceph cluster. 2) went smoothly. When ceph df reports the space available to a pool, it considers the ratio settings relative to the most full OSD that is part of the pool. The --force and --offline flags to the exit command can be used to to have cephadm mark a host that is in maintenance mode and offline as no longer in CEPHADM_STRAY_DAEMON¶ One or more Ceph daemons are running but not are not managed by cephadm. Each ceph-mds daemon instance should have a unique name. When you add Ceph OSDs to a cluster or remove them from the cluster, the CRUSH algorithm rebalances the cluster by moving placement groups to or from Ceph OSDs to restore the balance. One or more instances of ceph-mds collectively manage the file system namespace, coordinating access to the shared OSD cluster. If you intend to use an automated tool such as :doc:`/cephadm/index` to set up a Ceph cluster, do not use the instructions on this page. To deploy each additional monitor: ceph orch daemon add mon *<newhost1:ip-or-network1>* In case the last mgr daemon of a Red Hat Ceph Storage cluster was removed, you can manually deploy a mgr daemon, on a random host of the Red Hat Ceph Storage cluster. If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: This is the eighth backport release in the Pacific series. d is running before removing mon. cephadm does not try to manage any daemons started by vstart. Strange thing, in /etc/ceph/ceph. Run the ceph orch apply command to deploy the required monitor daemons: Syntax ceph orch apply mon “NUMBER_OF_DAEMONS HOST_NAME_1 HOST_NAME_3” If you want to remove monitor daemons from host02, then you can redeploy the monitors on other hosts. By default, whichever ceph-mgr instance comes up first is made active by the Ceph Monitors, and others are standby managers. Crash signature (v1): Crash signature (v2): Tags (freeform): Peering . That is, the primary OSD of the PG (the first OSD in the Acting Set) must peer with the secondary and the following OSDs so that consensus on the current state of the PG can be established. Cluster SSH Keys must be copied to hosts prior to adding them. rpcqxx(active, since 11m), Follow the steps in Removing Monitors from an Unhealthy Cluster. pech-cog-2 From what I've looked at there isn't a function to just rename a ceph host using the native tooling. conf, as the above configure is not persistent. 4:6789 cluster: id: e97c1944-e132-11ea-9bdd-e83935b1c392 health: HEALTH_ERR 1 stray daemons(s) not managed by cephadm 2 mgr modules have Co-locating the MDS with other Ceph daemons (hyperconverged) is an effective and recommended way to accomplish this so long as all daemons are configured to use available hardware within certain limits. yaml. We do not do this inline because scanning the collections to remove the objects is You’ll see health warnings from cephadm about stray daemons--that’s because the vstart-launched daemons aren’t controlled by cephadm. When configuring new hosts, This in turn means that Ceph will return the bare host names when executing ceph there is a lot of different documentation out there about how to remove an OSD. container image. The OSD is up and running. You can remove hosts of a Ceph cluster with the Ceph Orchestrators. For iSCSI gateways, we will use hosts managed by cephadm. Disable the Cephadm scheduler to prevent Cephadm from removing the new MGR daemon, with the following command: Example [ceph: root@host01 /]# ceph config-key set mgr/cephadm If it is added to an existing host that already contains Ceph daemons, it will cause cephadm to move those daemons elsewhere (except OSDs, which are not removed automatically). Ceph health reports stray daemon(s) The command ceph health detail shows a warning similar to: HEALTH_WARN 1 stray daemon(s) not managed by cephadm [WRN] CEPHADM_STRAY_DAEMON: 1 stray daemon(s) not managed by cephadm stray daemon osd. The scrub tag is used to differentiate scrubs and also to mark each inode’s first data object in the default data pool (where the backtrace information is stored) with a scrub_tag extended attribute with the value of the tag. When Ceph services start, the initialization process activates a set of daemons that run in the background. It shows the following procedure to remove an OSD: ceph orch daemon stop osd. If the stray daemon(s) are running on hosts not managed by cephadm, you can manage the host(s) by running the following command: For stateless daemons, it is usually easiest to provision a new daemon with the ceph orch apply command and then stop the unmanaged daemon. (I have looked at the docs about stray daemons but they only reference the context of upgrading the cluster to cephadm). The MDS issues capabilities and directory entry leases to indicate what state clients may cache and what manipulations clients As the adoption process progresses, adopted daemons will appear with the style cephadm:v1. First, disable the automated placement of daemons: ceph orch apply mon--unmanaged. When configuring new hosts, there are two valid ways to set the hostname of a host: Using the bare host name. With Ceph, an OSD is generally one Ceph ceph-osd daemon for one storage drive within a host machine. This document (000019915) is provided subject to the disclaimer at the end of this document. If a module is enabled then the active ceph-mgr daemon will load and execute it. Any ideas? service_type: mon When you add Ceph OSDs to a cluster or remove them from the cluster, the CRUSH algorithm rebalances the cluster by moving placement groups to or from Ceph OSDs to restore the balance. X. When configuring new hosts, This in turn means that Ceph will return the bare host names when executing ceph * metadata. If the cluster is degraded (that is, if an OSD has failed and the In this article we set up iSCSI interface on a Ceph cluster. Removing an MDS To disable the warning, you can disable auto-scaling of PGs for the pool entirely with: cephuser@adm > ceph osd pool set POOL-NAME pg_autoscale_mode off. By default, this command shows info-level events and above. If your host has multiple storage drives, you may need to remove one ceph-osd daemon for each drive. Ceph Monitor (ceph-mon). However, any pools created without the --bulk flag will remain using it's old CEPHADM_STRAY_HOST. ceph orch daemon rm daemonname will remove a daemon, but you might want to resolve the stray host first. c as described on Removing a Monitor (Manual). It provides commands to investigate and modify the state of the current host. in because this option was only used by MDS client from its birth. ref:`cephadm-stray-host` warning. build: Remove ceph-libboost* packages in install-deps (pr#52790, Nizamudeen A, Adam Emerson) ceph-volume: fix a bug in get_lvm_fast_allocs() (batch) (pr#52063, Guillaume Abrioux) mgr/cephadm: fix tcmu-runner cephadm_stray_daemon (pr#44630, Melissa Li) mgr/cephadm: Fix test_facts There are 2 stray daemons - one from an MDS file system I created, then deleted (I think it's the standby mds) and one is one of the mon daemons from ceph03. Before you begin the process of removing an OSD, Cephadm . {id} ceph osd rm {id} That should completely remove the OSD from your system. 32. d. Ceph OSD Daemon (ceph-osd). Warning. conf is identical on all hosts, then the following command can be run on one host and will take effect for all hosts: ceph/daemon-base General purpose Ceph container with all necessary daemons and dependencies installed. Although IO can continue when ceph-mgr is down, metrics will not refresh and some metrics-related calls (e. ceph daemon mds. I have 3 nodes that the mon should run on, but because of a bug in 16. Adoption process Make sure that the ceph configuration has been migrated to use the cluster’s central config database. Orchestrator. If all of the Ceph monitor daemons in your cluster are in the same subnet, manual administration of the Ceph monitor daemons is not necessary. ceph-mon is the cluster monitor daemon for the Ceph distributed file system. There seems to be again an issue in "AuthMonitor::update_from_paxos", but a different assert fails: "ceph_assert(version > keys_ver)". 1. To see debug-level messages as well as info-level events, run the following commands: Ceph daemon control Ceph is a distributed object, block, and file storage platform - ceph/ceph The OSD daemons adjust the memory consumption based on the osd_memory_target configuration option. Not to be confused with the Stray Demon, a mini-boss in Dark Souls 3. Example [ceph: root@host01 /]# ceph orch apply mon “2 host01 host03” num_strays_purging, num_strays_delayted performance counters (ceph daemon mds. It appears that when the mon daemon were deployed on Hi I have a warning that says "1 stray daemon (s) not managed by cephadm" What i did is the following. Standby daemons¶. You can manage the host(s) with the ceph orch host add HOST_NAME Ceph Manager Daemon . Even if I try to remove it using ceph orch apply it will remove the daemon which is up, but it will still remain stuck in extra_probe_peers. Stop the ceph target (all daemons stop) Disable the ceph target on that host, to prevent a reboot from automatically starting ceph services again) Exiting Maintenance, is basically the reverse of the above sequence. Once all daemons are removed you can remove the host with the following: If it is added to an existing host that already contains Ceph daemons, it will cause cephadm to move those daemons elsewhere (except OSDs, which are not removed automatically). This may be because they were Ceph Manager Daemon . i think the purge or reintegrated or migrated is not remove the dentry from stray dir map. A large demon found after returning to the Northern Undead Asylum. In crush-compat mode, the balancer automatically makes small changes to the data distribution in order to ensure that OSDs are utilized equally. The Ceph monitors are reported as stray daemons even after removal The material on this page is to be used only for manually setting up a Ceph cluster. Ceph OSD Daemons write data to the disk and to journals. The purge and purgedata commands provide a convenient means of cleaning up a host. CEPHFS: Rename the mds_max_retries_on_remount_failure option to client_max_retries_on_remount_failure and move it from mds. To allow the cluster to automatically adjust the number of PGs: CEPHADM_STRAY_DAEMON. Notable Changes ¶. It is designed to be fault-tolerant, self-healing, and capable of running on In Ceph Dashboard -> Services I could see that my old OSD daemons continued to run under the control of the old service definitions. HEALTH_WARN I failed removing mon. spec. No service spec is defined for mon or mgr. In this case CentOS Stream 9 Ceph Squid Add or Remove OSDs. Hosts can contain a location identifier which will instruct cephadm to create a For stateless daemons, it is usually easiest to provision a new daemon with the ceph orch apply command and then stop the unmanaged daemon. Yay, I guess, however, while the surviving monitor establishes a quorum and can (briefly) answer to ceph -s, it also fails after 1-2 minutes of running. com not managed by cephadm Environment. Ceph Manager Daemon; Ceph Dashboard; Monitoring overview; API Documentation; Architecture; Developer Guide; Ceph Internals. cephadm is a command line tool to manage the local host for the cephadm orchestrator. 5. WAIT_FOR_HEALTHY: Verify that this parameter is selected as it enables the Ceph health check within the pipeline. Parent topic: Managing monitors. Server World: Other OS Configs. target # rm -rf /var/lib/ceph/mds Check the ceph health detail output for cephadm warnings about stray cluster daemons or hosts that are not yet managed. I saw the num_strays is the same of strays_created. Similar to rm-daemon, if you remove a few daemons this way and the Ceph Orchestrator is not paused and some of those daemons belong to services that are not unmanaged, the cephadm orchestrator just redeploys them there. Prerequisites. e. CEPHADM_STRAY_HOST. ceph; Share. CentOS Stream 10; CentOS Stream 9; Ubuntu 24. Note If you are certain that you know what you are Remove all the daemons from a storage cluster on that specific host where it is run. rados/cephadm/smoke: Health check failed: 1 stray daemon(s) not managed by cephadm (CEPHADM_STRAY_DAEMON) in cluster log. This “trick” will allow you to make changes in any build: Remove ceph-libboost* packages in install-deps (pr#52790, Nizamudeen A, Adam Emerson) ceph-volume: fix a bug in get_lvm_fast_allocs() (batch) (pr#52063, Guillaume Abrioux) mgr/cephadm: fix tcmu-runner cephadm_stray_daemon (pr#44630, Melissa Li) mgr/cephadm: Fix test_facts Cephadm can provide a list of all Ceph daemons on the current host: # cephadm ls. Do not leave this parameter empty. conf is identical on all hosts, then the following command can be run on one host and will take effect for all hosts: Ceph daemons are now managed via systemd (with the exception of Ubuntu Trusty, which still uses upstart). prompt:: bash # ceph orch set backend '' ceph mgr module disable cephadm These commands disable all ceph orch CLI commands. Failing to include a service_id in your OSD spec causes the Ceph cluster to mix the OSDs from your spec with those OSDs, which can potentially result in the overwriting of service specs created by cephadm to track them. Monitoring the cluster on the Ceph dashboard. Root-level access to the Ceph Monitor node. 1 and mon. Subject: Re: Stray host/daemon; From: Jeremy Hansen <jeremy@xxxxxxxxxx>; Date: Fri, 1 Dec 2023 14:18:06 -0800; In-reply-to: <fd15a577-89b1-4793-9dd5-a0957046ca6d@Canary>; References: <fd15a577-89b1-4793-9dd5-a0957046ca6d@Canary> When you add Ceph OSDs to a cluster or remove them from the cluster, the CRUSH algorithm rebalances the cluster by moving placement groups to or from Ceph OSDs to restore the balance. 7, which is what I want. 9 crashed on host prox-node4a at 2020-01-02 07:28:12. Finally, stop and remove the legacy MDS daemons: Once the daemons have started and you have confirmed they are functioning, stop and remove the old legacy daemons: Check the ceph health detail output for cephadm warnings about stray cluster daemons or hosts that are not yet managed. example. Removing hosts. For more information see Cephadm. It can scan all the stray dir and calculate the num_strays. You’ll see health warnings from cephadm about stray daemons--that’s because the vstart-launched daemons aren’t controlled by cephadm. This stops all changes in the Ceph cluster, but cephadm will still periodically check hosts to refresh its inventory of daemons and devices. Running Ceph with SysVinit Each time you start, restart, or stop Ceph daemons, you must specify at least one option and one command. Cephadm constantly compares list of actually running daemons in the cluster with the desired service specifications and will either add or remove new daemons. pech-mds-1 ceph-<fsid>-grafana. This is expected behavior to avoid the accidental removal of Ceph daemons resulting in the loss of data. conf is identical on each host, then the following command can be run on one single host and will affect all hosts: For stateless daemons, it is usually easiest to provision a new daemon with the ceph orch apply command and then stop the unmanaged daemon. The mondatapath refers to a directory on a local file system storing monitor data. This may be because they were Description . Cephadm background work is paused with the ceph orch pause command. When configuring new hosts, This instructs cephadm to deploy three daemons on hosts labeled with myfs across the cluster. Monitoring hosts of the Ceph cluster on the dashboard; 6. Then observe "ceph daemon mds. Any pools created with bulk will use a profile of the pg_autoscaler that provides more performance from the start. This “trick” will allow you to make changes in any 5. Remove stray ‘v’ in version (pr#7936, Dan Mick) debian/changelog: Remove stray ‘v’ in version (pr#7938, Dan Mick) debian: include cpio in build-requiers (pr#7533, Rémi BUISSON) Adding and removing Ceph OSD Daemons to your cluster may involve a few more steps when compared to adding and removing other Ceph daemons. cephadm can add a Ceph container to the cluster. Watching cephadm log messages The cephadm orchestrator module writes logs to the And it looks like it's still running some daemons > ceph device ls-by-host storage3 DEVICE DEV DAEMONS EXPECTED FAILURE QEMU_HARDDISK_drive-scsi0 sda mon. Since the 12. note. net` the mon daemon on mon1 gets removed, monitor quorum goes to 2/2 with mon2 and mon3. com The ceph-osd daemons will perform a disk-format upgrade improve the PG metadata layout and to repair a minor bug in the on-disk format. I then reapplied with the correct mon host, and now it's stuck in extra_probe_peers. ID --force ceph orch osd rm status ceph osd rm ID ceph orch device zap --force <fqdn> /dev/vdf Health checks are run when the Cephadm module is active. This may be because they were I removed the server from the mon map prior to the reinstall so no services were running. x (kraken) Ceph release. crush-compat mode is backward compatible with older clients. Improve this question. Monitoring the cluster on the Ceph dashboard; 6. Asynchronous scrubs must be polled using scrub status to determine the status. There is no requirement that there should be a quorum among the `ceph-mgr` daemons. in: remove command-with-macro line (pr#57357, John Mulligan) cephadm/nvmeof: scrape nvmeof prometheus endpoint ( pr#56108 , Avan Thakkar) cephadm: Add mount for nvmeof log location ( pr#55819 , Roy Sahar). For most systems, by default, these logs are sent to journald and accessible via journalctl. If a single outlier OSD becomes full, all writes to this OSD’s pool might fail as a result. To disable logging to You can remove hosts of a Ceph cluster with the Ceph Orchestrators. Any Ceph Storage Cluster that supports the Ceph File System also runs at least one Ceph Metadata ceph. If set to true, the orchestrator will not deploy nor remove any daemon associated with this service. You can manage the host(s) with the ceph orch host add HOST_NAME ceph-mds is the metadata server daemon for the Ceph distributed file system. You may specify a daemon instance a name (optional) if you would like to run multiple daemons on a single server. By default, cephadm daemons log to stderr and the logs are captured by the container runtime environment. So you need to provide a disk for the OSD and a path to the journal partition (i. Ceph daemons are now managed via systemd (with the exception of Ubuntu Trusty, which still uses upstart). However, those HEALTH_WARN 2 stray host(s) with 2 daemon(s) not managed by cephadm. Cephadm continues to perform passive monitoring activities such as checking the host and daemon status, but it does not make any changes like deploying or removing daemons. c, or it will break the quorum. ceph2'] ceph1:~ # ceph -s cluster: id: 90122986-8059-11eb-ae6c-3868dd37f020 health: HEALTH_WARN Recursive scrub is asynchronous (as hinted by mode in the output above). uaooz lzrdy vxt ibobc zghvug jui eyfijbh frfd hgzm sbpf