cluster_setup_ceph: disable PrivateTmp for ssh during Ceph configuration #679
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eroussy
previously approved these changes
Jan 8, 2025
dupremathieu
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Jan 8, 2025
playbooks/cluster_setup_ceph.yaml
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| tasks: | ||
| - name: Temporarily disable private tmpfs for ssh sessions | ||
| lineinfile: | ||
| path: /usr/lib/systemd/system/sshd@.service.d/sshd-private-tmp.conf |
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This file id in ro on Yocto.
Use an systemd override file instead.
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Commit [1] in meta-seapath enabled the PrivateTmp systemd option for every ssh sessions with SEAPATH Yocto. This means that every ssh sessions, including ansible ones, will use a separate mount namespace. Any new files in /tmp or new tmpfs during ansible tasks are deleted once the ssh session closes. This is a problem regarding Ceph and ceph-ansible. Directories in /var/lib/ceph/osd/, which contains multiple OSD files, are in fact tmpfs created by ceph-ansible. With the PrivateTmp option, these directories are then lost once the Ansible ssh session closes. As a workaround, temporarily disable the PrivateTmp option for the Ceph configuration via a service override file. Note that this only affects SEAPATH Yocto. [1]: seapath/meta-seapath@22cddd3 Signed-off-by: Elinor Montmasson <elinor.montmasson@savoirfairelinux.com>
"After" setting should be in the Unit section of a systemd service file. Signed-off-by: Elinor Montmasson <elinor.montmasson@savoirfairelinux.com>
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Commit 1 in meta-seapath enabled the PrivateTmp systemd option for every ssh sessions with SEAPATH Yocto.
This means that every ssh sessions, including ansible ones, will use a separate mount namespace. Any new files in /tmp or new tmpfs during ansible tasks are deleted once the ssh session closes.
This is a problem regarding Ceph and ceph-ansible. Directories in /var/lib/ceph/osd/, which contains multiple OSD files, are in fact tmpfs created by ceph-ansible. With the PrivateTmp option, these directories are then lost once the Ansible ssh session closes.
As a workaround, temporarily disable the PrivateTmp option for the Ceph configuration.
Note that this only affects SEAPATH Yocto.