On Thu, Dec 15, 2016 at 8:35 AM, Andy Zhou <[email protected]> wrote: > The goal of this series is to make it easier to set up OVN in > a larger setup, i.e. not having all services running on a single host. > > Currently ovn-central package starts and stop all three services > northbound-db, northd and southbound-db on the same host. While it > is convenient for a single host setup, it is hard to test scale > and HA, where OVN services may have to be installed on different hosts. >
The package itself doesn't start or stop anything, right? The systemd config does start/stop all 3 together, but that seems like the common case unless you're running in an HA setup. If you're running in an HA setup using Pacemaker, you wouldn't be using systemd. It does mean you might have ovn-northd installed where it's not running, but at least in my (OpenStack) case, I want it that way. ovn-northd will be running on one host, but we'll have Pacemaker configured to ensure it's running on any of 3 hosts, for example. > > This patch series splits the ovn-central package into three packages > ovn-northbound-database, ovn-southbound-database and ovn-northd. > Also, Each one provides the corresponding systemd services. > > Another drawback of current packaging is that ovsdb-server is part > of vswitchd package. If one wants to run ovn-northbound-database, > he needs to install and start vswitchd service as well. This is > unnecessary and may lead to confusions. This patch series separate > ovsdb-server into its own package. > Why do you need to start and install vswitchd to use ovsdb-server? It is indeed an install requirement at least. I suppose splitting out ovsdb-server seems OK, as long as we don't see upgrade issues due to the package changes. This hasn't come up for me with our OpenStack work because we're always using OVS on the hosts anyway. > > ovn-central package is retained to be friendly to single host > deployments. However ovn-central service is marked as exclusive > with the other three services mentioned above. (I am not sure > if this is necessary, and may more confusing than its worth) > > Andy Zhou (5): > rpms: Seperate ovsdb-server into its own package > rpms: Style fixes > rhel: Rename nrothd to central service > ovn-ctl: Factor out start/stop ovnsb/ovnnb > rpms: Adding three additional OVN packages > > ovn/utilities/ovn-ctl | 55 +++++++- > ovn/utilities/ovn-ctl.8.xml | 4 + > rhel/automake.mk | 3 + > rhel/openvswitch-fedora.spec.in | 141 > +++++++++++++++------ > rhel/usr_lib_systemd_system_ovn-central.service | 34 +++++ > ...sr_lib_systemd_system_ovn-northbound-db.service | 16 +++ > rhel/usr_lib_systemd_system_ovn-northd.service | 29 ++++- > ...sr_lib_systemd_system_ovn-southbound-db.service | 16 +++ > 8 files changed, 251 insertions(+), 47 deletions(-) > create mode 100644 rhel/usr_lib_systemd_system_ovn-central.service > create mode 100644 rhel/usr_lib_systemd_system_ovn-northbound-db.service > create mode 100644 rhel/usr_lib_systemd_system_ovn-southbound-db.service > > -- > 1.8.3.1 > > _______________________________________________ > dev mailing list > [email protected] > https://mail.openvswitch.org/mailman/listinfo/ovs-dev > -- Russell Bryant _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
