Hi Simon, I am not using advanced network.
Here is my network configuration ifcfg-bond0: TYPE=Bond BONDING_MASTER=yes BONDING_OPTS="mode=802.3ad miimon=100 updelay=0 downdelay=0" DEVICE=bond0 ONBOOT=yes BOOTPROTO=none USERCTL=no HOTPLUG=no BRIDGE=cloudbr0 NM_CONTROLLED=no ifcfg-bond0.200: DEVICE=bond0.200 ONBOOT=yes HOTPLUG=no BOOTPROTO=none VLAN=yes BRIDGE=cloudbr1 ifcfg-cloudbr0: DEVICE=bond0.200 ONBOOT=yes HOTPLUG=no BOOTPROTO=none #TYPE=Ethernet VLAN=yes BRIDGE=cloudbr1 ifcfg-cloudbr0: DEVICE=cloudbr0 TYPE=Bridge ONBOOT=yes BOOTPROTO=none IPV6INIT=no IPV6_AUTOCONF=no DELAY=5 STP=yes IPADDR=192.168.1.5 GATEWAY=192.168.1.1 NETMASK=255.255.254.0 ifcfg-cloudbr1: DEVICE=cloudbr1 TYPE=Bridge ONBOOT=yes BOOTPROTO=none IPV6INIT=no IPV6_AUTOCONF=no DELAY=5 STP=yes On Wed, Sep 19, 2018 at 3:10 PM Simon Weller <swel...@ena.com.invalid> wrote: > Jevgeni, > > > What type of networking are you using on your hosts? If advanced, what > type of isolation? > > > - Si > > ________________________________ > From: Jevgeni Zolotarjov <j.zolotar...@gmail.com> > Sent: Wednesday, September 19, 2018 3:17 AM > To: users@cloudstack.apache.org > Subject: Unable to communicate to instances on new host - iptables? > > Hello! > > We are running CS 4.11.1 on CentOS7 (latest) > > Previously the installation had just 1 KVM host. > Now we added another identical host. > After some configuration hassle with libvirtd, new host is up and running. > > I followed strictly the host installation guide for 4.11. > But instances running on new host are not accessible via tcp/ip. Neither > they can access network. > > I found out that stopping iptables on new host resolves the problem. But > this is not the solution, I guess. > > Please help. >