Merge "Update plugin.sh and document for cellv2 integration"
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Zuul
Gerrit Code Review
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@ -64,7 +64,7 @@ function init_common_tricircle_conf {
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}
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function init_local_nova_conf {
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iniset $NOVA_CONF glance api_servers http://$KEYSTONE_SERVICE_HOST:9292
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iniset $NOVA_CONF glance api_servers http://$KEYSTONE_SERVICE_HOST/image
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iniset $NOVA_CONF placement os_region_name $CENTRAL_REGION_NAME
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}
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@ -229,28 +229,27 @@ function start_central_nova_server {
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local central_region=$2
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local central_neutron_port=$3
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# reconfigure central neutron server to use our own central plugin
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echo "Configuring Nova API for Tricircle to work with cell V2"
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cp $NOVA_CONF $NOVA_CONF.0
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iniset $NOVA_CONF.0 neutron region_name $central_region
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iniset $NOVA_CONF.0 neutron url "$Q_PROTOCOL://$SERVICE_HOST:$central_neutron_port"
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iniset $NOVA_CONF neutron region_name $central_region
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iniset $NOVA_CONF neutron url "$Q_PROTOCOL://$SERVICE_HOST:$central_neutron_port"
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# Here we create new endpoints for central region instead of updating the
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# endpoints in local region because at the end of devstack, the script tries
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# to query the nova api in local region to check whether the nova-compute
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# service is running. If we update the endpoint region from local region to
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# central region, the check will fail and thus devstack fails
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nova_url=$(openstack endpoint list --service compute --interface public --region $local_region -c URL -f value)
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get_or_create_endpoint "compute" "$central_region" "$nova_url"
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nova_legacy_url=$(openstack endpoint list --service compute_legacy --interface public --region $local_region -c URL -f value)
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get_or_create_endpoint "compute_legacy" "$central_region" "$nova_legacy_url"
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nova_endpoint_id=$(openstack endpoint list --service compute --interface public --region $local_region -c ID -f value)
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openstack endpoint set --region $central_region $nova_endpoint_id
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nova_legacy_endpoint_id=$(openstack endpoint list --service compute_legacy --interface public --region $local_region -c ID -f value)
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openstack endpoint set --region $central_region $nova_legacy_endpoint_id
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image_endpoint_id=$(openstack endpoint list --service image --interface public --region $local_region -c ID -f value)
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openstack endpoint set --region $central_region $image_endpoint_id
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place_endpoint_id=$(openstack endpoint list --service placement --interface public --region $local_region -c ID -f value)
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openstack endpoint set --region $central_region $place_endpoint_id
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stop_process n-api
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# remove previous failure flag file since we are going to restart service
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rm -f "$SERVICE_DIR/$SCREEN_NAME"/n-api.failure
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sleep 20
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run_process n-api "$NOVA_BIN_DIR/nova-api --config-file $NOVA_CONF.0"
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restart_service devstack@n-api
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restart_apache_server
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}
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@ -23,7 +23,12 @@ Setup
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friendly). End user can access CentralRegion endpoint of Nova and Neutron to
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experience the integration of Nova cell v2 and Tricircle.
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- 2 Enter the screen section in node2, stop n-api and n-sch.
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- 2 Stop the following services in node2::
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systemctl stop devstack@n-sch.service
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systemctl stop devstack@n-super-cond.service
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systemctl stop devstack@n-api.service
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systemctl stop devstack@n-api-meta.service
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.. note:: Actually for cell v2, only one Nova API is required. We enable n-api
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in node2 because we need DevStack to help us create the necessary cell
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@ -32,7 +37,7 @@ Setup
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- 3 In node2, run the following command::
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mysql -u$user -p$password -Dnova -e 'select host, mapped from compute_nodes
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mysql -u$user -p$password -Dnova_cell1 -e 'select host, mapped from compute_nodes'
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you can see that this command returns you one row showing the host of node2
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is already mapped::
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@ -46,15 +51,15 @@ Setup
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This host is registered to Nova API in node2, which is already stopped by us,
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We need to update this row to set "mapped" to 0::
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mysql -u$user -p$password -Dnova -e 'update compute_nodes set mapped = 0 where host = "zhiyuan-2"'
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mysql -u$user -p$password -Dnova_cell1 -e 'update compute_nodes set mapped = 0 where host = "zhiyuan-2"'
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then we can register this host again in step4.
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- 4 In node1, run the following commands to register the new cell::
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nova-manage cell_v2 create_cell --name cell2 \
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--transport-url rabbit://$rabbit_user:$rabbit_passwd@$node2_ip:5672/ \
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--database_connection mysql+pymysql://$db_user:$db_passwd@$node2_ip/nova?charset=utf8
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--transport-url rabbit://$rabbit_user:$rabbit_passwd@$node2_ip:5672/nova_cell1 \
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--database_connection mysql+pymysql://$db_user:$db_passwd@$node2_ip/nova_cell1?charset=utf8
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nova-manage cell_v2 discover_hosts
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@ -86,17 +91,17 @@ Setup
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+----+------------------+-----------+----------+---------+-------+----------------------------+
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| ID | Binary | Host | Zone | Status | State | Updated At |
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+----+------------------+-----------+----------+---------+-------+----------------------------+
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| 5 | nova-conductor | zhiyuan-1 | internal | enabled | up | 2017-05-27T06:04:37.000000 |
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| 7 | nova-scheduler | zhiyuan-1 | internal | enabled | up | 2017-05-27T06:04:36.000000 |
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| 8 | nova-consoleauth | zhiyuan-1 | internal | enabled | up | 2017-05-27T06:04:39.000000 |
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| 9 | nova-compute | zhiyuan-1 | nova | enabled | up | 2017-05-27T06:04:42.000000 |
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| 4 | nova-conductor | zhiyuan-2 | internal | enabled | up | 2017-05-27T06:04:40.000000 |
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| 6 | nova-scheduler | zhiyuan-2 | internal | enabled | down | 2017-05-27T02:56:50.000000 |
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| 7 | nova-consoleauth | zhiyuan-2 | internal | enabled | up | 2017-05-27T06:04:36.000000 |
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| 8 | nova-compute | zhiyuan-2 | nova | enabled | up | 2017-05-27T06:04:38.000000 |
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| 5 | nova-scheduler | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:56:02.000000 |
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| 6 | nova-conductor | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:56:09.000000 |
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| 8 | nova-consoleauth | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:56:01.000000 |
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| 1 | nova-conductor | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:56:07.000000 |
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| 3 | nova-compute | zhiyuan-1 | nova | enabled | up | 2017-09-20T06:56:10.000000 |
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| 1 | nova-conductor | zhiyuan-2 | internal | enabled | up | 2017-09-20T06:56:07.000000 |
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| 3 | nova-compute | zhiyuan-2 | nova | enabled | up | 2017-09-20T06:56:09.000000 |
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+----+------------------+-----------+----------+---------+-------+----------------------------+
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Nova scheduler in host zhiyuan-2 is down because we stop it in step2.
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zhiyuan-1 has two nova-conductor services, because one of them is a super
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conductor service.
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- 6 Create two aggregates and put the two hosts in each aggregate::
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@ -128,22 +133,13 @@ Trouble Shooting
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+----+------------------+-----------+----------+---------+-------+----------------------------+
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| ID | Binary | Host | Zone | Status | State | Updated At |
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+----+------------------+-----------+----------+---------+-------+----------------------------+
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| 5 | nova-conductor | zhiyuan-1 | internal | enabled | up | 2017-05-27T06:04:37.000000 |
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| 7 | nova-scheduler | zhiyuan-1 | internal | enabled | up | 2017-05-27T06:04:36.000000 |
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| 8 | nova-consoleauth | zhiyuan-1 | internal | enabled | up | 2017-05-27T06:04:39.000000 |
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| 9 | nova-compute | zhiyuan-1 | nova | enabled | up | 2017-05-27T06:04:42.000000 |
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| 5 | nova-scheduler | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:55:52.000000 |
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| 6 | nova-conductor | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:55:59.000000 |
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| 8 | nova-consoleauth | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:56:01.000000 |
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| 1 | nova-conductor | zhiyuan-1 | internal | enabled | up | 2017-09-20T06:55:57.000000 |
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| 3 | nova-compute | zhiyuan-1 | nova | enabled | up | 2017-09-20T06:56:00.000000 |
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+----+------------------+-----------+----------+---------+-------+----------------------------+
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Though new cell has been registered in the database, the running n-api process
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in node1 may not recognize it. We find that restarting n-api can solve this
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problem.
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- 2 After you create a server, the server turns into Error status with error
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"No valid host was found"
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We check the log of n-sch process in node1 and find it says: "Found 2 cells",
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this is incorrect since we have three cells including cell0. After restarting
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n-sch, the log says "Found 3 cells". Try creating server again after that.
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Another reason for this problem we have found is that n-cpu doesn't sync
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available resource with n-sch, restarting n-cpu can slove this problem.
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