- Red Hat Enterprise Linux (RHEL) 7
- Trying to set up readonly
/filesystem and have modified below parameters in
/etc/sysconfig/readonly-rootto the following:
- However when the server is rebooted, the root filesystem is mounted as rw and not ro as expected:
/dev/xvda1 on / type xfs (rw,relatime,attr2,inode64,noquota)
- To mount
/in readonly mode in RHEL 5/6 refer Is it possible to mount the root filesystem read-only (Stateless Linux)?
- For RHEL 7, follow below steps :
Edited below file by changing the parameters as per your requirement. Minimal requirement is to edit
# cat /etc/sysconfig/readonly-root # Set to 'yes' to mount the system filesystems read-only. READONLY=yes # Set to 'yes' to mount various temporary state as either tmpfs # or on the block device labelled RW_LABEL. Implied by READONLY TEMPORARY_STATE=yes # Place to put a tmpfs for temporary scratch writable space RW_MOUNT=/var/lib/stateless/writable # Label on local filesystem which can be used for temporary scratch space RW_LABEL=stateless-rw # Options to use for temporary mount RW_OPTIONS= # Label for partition with persistent data STATE_LABEL=stateless-state # Where to mount to the persistent data STATE_MOUNT=/var/lib/stateless/state # Options to use for persistent mount STATE_OPTIONS= # NFS server to use for persistent data? CLIENTSTATE= # Use slave bind-mounts SLAVE_MOUNTS=yes
Change fstab entry for
# cat /etc/fstab | grep root /dev/mapper/rhel-root / xfs ro 0 0
Take a backup of current initramfs (to be on safer side).
# cp /boot/initramfs-3.10.0-229.el7.x86_64.img /boot/initramfs-3.10.0-229.el7.x86_64.img.bkp
Rebuild the initramfs for current kernel version.
# dracut -f -v
Perform a reboot.
/is mounted in
# cat /proc/mounts | grep root rootfs / rootfs rw 0 0 /dev/mapper/rhel-root / xfs ro,seclabel,relatime,attr2,inode64,noquota 0 0
initramfswas not re-built.
- Red Hat Enterprise Linux
- Customize or extend
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