[SOLVED] Ceph mon create error "value does not look like a valid CIDR network (500)"

[drenikqi]

When I try to create a new monitor in the proxmox GUI it throws the error "value does not look like a valid CIDR network (500)". The same error appears from the terminal too with the command

pveceph mon create --mon-address x.x.x.x

and

pveceph mon create

.
pveversion -v output:

proxmox-ve: 7.4-1 (running kernel: 5.15.39-3-pve)
pve-manager: 7.4-3 (running version: 7.4-3/9002ab8a)
pve-kernel-5.15: 7.4-1
pve-kernel-5.4: 6.4-19
pve-kernel-5.15.104-1-pve: 5.15.104-2
pve-kernel-5.15.39-3-pve: 5.15.39-3
pve-kernel-5.4.195-1-pve: 5.4.195-1
pve-kernel-5.4.189-1-pve: 5.4.189-1
pve-kernel-5.4.143-1-pve: 5.4.143-1
ceph: 15.2.17-pve1
ceph-fuse: 15.2.17-pve1
corosync: 3.1.7-pve1
criu: 3.15-1+pve-1
glusterfs-client: 9.2-1
ifupdown: residual config
ifupdown2: 3.1.0-1+pmx3
libjs-extjs: 7.0.0-1
libknet1: 1.24-pve2
libproxmox-acme-perl: 1.4.4
libproxmox-backup-qemu0: 1.3.1-1
libproxmox-rs-perl: 0.2.1
libpve-access-control: 7.4-2
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.3-4
libpve-guest-common-perl: 4.2-4
libpve-http-server-perl: 4.2-3
libpve-rs-perl: 0.7.5
libpve-storage-perl: 7.4-2
libqb0: 1.0.5-1
libspice-server1: 0.14.3-2.1
lvm2: 2.03.11-2.1
lxc-pve: 5.0.2-2
lxcfs: 5.0.3-pve1
novnc-pve: 1.4.0-1
proxmox-backup-client: 2.4.1-1
proxmox-backup-file-restore: 2.4.1-1
proxmox-kernel-helper: 7.4-1
proxmox-mail-forward: 0.1.1-1
proxmox-mini-journalreader: 1.3-1
proxmox-offline-mirror-helper: 0.5.1-1
proxmox-widget-toolkit: 3.6.5
pve-cluster: 7.3-3
pve-container: 4.4-3
pve-docs: 7.4-2
pve-edk2-firmware: 3.20230228-2
pve-firewall: 4.3-1
pve-firmware: 3.6-4
pve-ha-manager: 3.6.0
pve-i18n: 2.12-1
pve-qemu-kvm: 7.2.0-8
pve-xtermjs: 4.16.0-1
pve-zsync: 2.2.3
qemu-server: 7.4-3
smartmontools: 7.2-pve3
spiceterm: 3.2-2
swtpm: 0.8.0~bpo11+3
vncterm: 1.7-1
zfsutils-linux: 2.1.9-pve1

 

[aaron]

An IP in CIDR notation expects the subnet mask as well, for example: 192.168.0.1/24 for a 255.255.255.0

 

[drenikqi]

An IP in CIDR notation expects the subnet mask as well, for example: 192.168.0.1/24 for a 255.255.255.0

Sorry I forgot to mention that I tried with and without the subnet mask but the results are the same for both.

 

[aaron]

Can you post the command with the actual values you used?

 

[drenikqi]

Due to security purposes (public network), I cannot post the command with the actual values. The IP Address and subnet were correct and valid, but it was not working for some reason. I managed to create the monitor manually with these commands:

ceph mon getmap -o /tmp/monmap
sudo -u ceph ceph-mon --cluster ceph --mkfs -i <node-name> --monmap /tmp/monmap --keyring /tmp/ceph.mon.keyring
systemctl start ceph-mon@<node-name>.service

and adding the new mon to /etc/ceph/ceph.conf