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  1. BelCloud

    Vlan aware bridge unable to receive vlan traffic

    I've been trying to pass a trunk port directly to a VM, however the incoming traffic does not seem to reach the bridge. My config looks like this: auto vmbr11 iface vmbr11 inet manual bridge_vlan_aware yes bridge_ports eno2 bridge_stp off bridge_fd 0 Vlan id...
  2. BelCloud

    KVM: Cannot allocate memory - although enough memory available

    I've started having this error recently when i try to start a KVM. The server has enough memory available, although it seems to be used in cache. ioctl(KVM_CREATE_VM) failed: 12 Cannot allocate memory kvm: failed to initialize KVM: Cannot allocate memory # free m total...
  3. BelCloud

    pvesh create /cluster/backup failing in the last versions

    Hi I'm having a problem with pvesh. I was using the following command to create the backup jobs: pvesh create /cluster/backup -all 1 -compress lzo -dow sun -dow tue -dow thu -enabled 1 -mode snapshot -starttime 03:00 -storage backup However, currently it's giving the following error...
  4. BelCloud

    GRE tunnel and MTU

    I'm trying to create a GRE tunnel so i can transfer, temporarly, some VMS from one dc to another. I have created a gretap interface between the servers and bridged it to the vmbr1 bridge which is used on the VMs. So far so good, the traffic seems to pass well between the servers. After i have...
  5. BelCloud

    Console start VM without qm

    Hi How can we start or debug the start of a VM witout qm? Because qm doesn't provide more info on what/where the issue is. # qm start 101 malformed JSON string, neither tag, array, object, number, string or atom, at character offset 0 (before "(end of string)") at /usr/share/perl5/PVE/
  6. BelCloud

    Resize root zfs on node

    Hi I'm having the following situation: # zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT rpool 3.62T 3.51T 119G - 54% 96% 1.02x ONLINE - rpool 3.51T 2.35M 104K /rpool rpool/ROOT 1.47G 2.35M...
  7. BelCloud

    ebtables IP - MAC restriction

    Hello Considering ebtables has been addded to proxmox, what options do we have to restrict an IP to specific IPs. Does the 5.2 version have any API option to update the ebtables for a specific VM interface? Is there any way to use the "ipfilter" option to block everything if IP does not match...
  8. BelCloud

    Meltdown/spectre cpu vulns

    Hello Is there any fix for the meltdown / spectre bugs that affect the cpus? I am assuming the qemu+intel cpu would make us vulnerable. Any ideas on mitigating the issue? Thanks
  9. BelCloud

    RRD error: Could not save png to '' - Proxmox 5

    Hello I'm getting the following error on proxmox 5, when trying to access rrd. pvesh get /nodes/jx213-s20/lxc/105/rrd -ds cpu -timeframe day RRD error: Could not save png to '' It's working well on proxmox 4. I've just dist-upgrade today, but did not solve the issue. Anyone's got an idea?
  10. BelCloud

    QEMU update. reboot?

    Hello I've seen some vulnerabilities in qemu-kvm, that were recently patched. For ex, CVE-2017-7980 In the redhat announcements, i saw they require a stop of all VMs for the update to take effect. Do we need to follow the same procedure when proxmox updates the qemu? Or it's patched in...
  11. BelCloud

    Filter ARP

    Hello Is there any way to filter the ARP replies? Ex: 09:45:12.141931 ARP, Reply xx.xx.xx.xxis-at b2:cb:9f:21:38:a8, length 46 I've had today a customer attempting to use another user's IP. The firewall blocked tcp/udp etc, but he still managed to answer ARP requests making the other...
  12. BelCloud

    Limit the number of process threads

    Is there a way to limit the number of process threads per LXC container?
  13. BelCloud

    Too many references: cannot splice - Error sending tty fd to parent

    On one of my nodes, i'm unable to start few containers (that used to work). The logs show: lxc-start 20170413215245.766 ERROR lxc_conf - conf.c:send_fd:3794 - Too many references: cannot splice - Error sending tty fd to parent lxc-start 20170413215245.766 ERROR lxc_conf -...
  14. BelCloud

    Limiting the processes in the lxc container [fork bomb]

    I'm periodically having issues with the lxc containers crashing the host node. The errors on the node are the classic nmi_watchdog stuck and i believe so far i was treating the symptom instead of the cause. Today, i had a very interesting "customer". His container was using 100% of his cpu (1...
  15. BelCloud

    can not fork user shell: Resource temporarily unavailable

    Hi I'm getting the following error: can not fork user shell: Resource temporarily unavailable when i try to run "su user" inside a lxc centos6 container. Any idea what can cause it?
  16. BelCloud

    NMI watchdog: BUG: soft lockup - CPU#5 stuck for

    Since few days ago, daily, i'm getting such errors. Once they start, in few minutes, the whole node crashes. I cannot run any commands, i was logged from both idrac console and ssh. The only solution so far is a reboot (but this affects my uptime a lot) Message from syslogd@dx411-s09 at Feb 12...
  17. BelCloud

    task pve-firewall: blocked for more than 120 seconds

    I'm running the latest proxmox version on a 6 node cluster. Today and yesterday, the cluster degraded and in all the nodes, i see this messages: Dec 23 04:39:06 dx411-s06 kernel: [82074.269775] INFO: task pve-firewall:2668 blocked for more than 120 seconds. Dec 23 04:39:06 dx411-s06 kernel...
  18. BelCloud

    LXC Unprivileged Containers

    As with the 4.4 version released, should we migrate all the containers to unprivileged?
  19. BelCloud

    NAT not working if gateway is on vmbr1

    I am using NAT in the provisioning part of my VM-s. I am trying to add a public IP to access the proxmox cluster/node, however i am unable to use both public IP and NAT. This is my configuration: auto lo iface lo inet loopback iface eth0 inet manual iface eth1 inet manual auto bond0 iface...
  20. BelCloud

    Restrict NAT access to private network

    I am trying to restrict NAT guests from accessing the private network (running a NFS) I have tried to block it via iptables, but no luck: iptables -A FORWARD -i guest -d -j DROP Any suggestions? Thank you


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