Tungsten Fabric入門寶典丨關於叢集更新的那些事
作者：Tatsuya Naganawa 譯者：TF編譯組
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例如，vRouter更新需要控制元件的IP，該IP是從instances.yaml中的control role節點推匯出的
就我試過的情況來看，當控制平面更新時，它會進行串聯更新和重啟控制程式，所以沒有看到掉包的現象。
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在install_contrail.yaml期間，控制程式的重啟是被跳過的，因為它們已經更新了。
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當執行vrouter-agent重啟時，仍然會出現一些丟包現象，所以如果可以的話，建議進行工作負載遷移。
old-controller:
ip: 172.31.2.209
hostname: ip-172-31-2-209
new-controller:
ip: 172.31.1.154
hostname: ip-172-31-1-154
(both controllers are installed with this instances.yaml)
provider_config:
bms:
ssh_user: root
ssh_public_key: /root/.ssh/id_rsa.pub
ssh_private_key: /root/.ssh/id_rsa
domainsuffix: local
ntpserver: 0.centos.pool.ntp.org
instances:
bms1:
provider: bms
roles:
config_database:
config:
control:
analytics:
analytics_database:
webui:
ip: x.x.x.x ## controller's ip
contrail_configuration:
CONTRAIL_CONTAINER_TAG: r5.1
KUBERNETES_CLUSTER_PROJECT: {}
JVM_EXTRA_OPTS: "-Xms128m -Xmx1g"
global_configuration:
CONTAINER_REGISTRY: tungstenfabric
[commands]
1. 停止批處理作業
docker stop config_devicemgr_1
docker stop config_schema_1
docker stop config_svcmonitor_1
2. 在cassandra上註冊新的control，在它們之間執行bgp
docker exec -it config_api_1 bash
python /opt/contrail/utils/provision_control.py --host_name ip-172-31-1-154.local --host_ip 172.31.1.154 --api_server_ip 172.31.2.209 --api_server_port 8082 --oper add --router_asn 64512 --ibgp_auto_mesh
3. 在控制器之間同步資料
vi contrail-issu.conf
(write down this)
[DEFAULTS]
old_rabbit_address_list = 172.31.2.209
old_rabbit_port = 5673
new_rabbit_address_list = 172.31.1.154
new_rabbit_port = 5673
old_cassandra_address_list = 172.31.2.209:9161
old_zookeeper_address_list = 172.31.2.209:2181
new_cassandra_address_list = 172.31.1.154:9161
new_zookeeper_address_list = 172.31.1.154:2181
new_api_info={ "172.31.1.154": [( "root"), ( "password")]} ## ssh public-key can be used
image_id=`docker images | awk '/config-api/{print $3}' | head -1`
docker run --rm -it --network host -v $(pwd)/contrail-issu.conf:/etc/contrail/contrail-issu.conf --entrypoint /bin/bash -v /root/.ssh:/root/.ssh $image_id -c "/usr/bin/contrail-issu-pre-sync -c /etc/contrail/contrail-issu.conf"
4. 啟動程式進行實時資料同步
docker run --rm --detach -it --network host -v $(pwd)/contrail-issu.conf:/etc/contrail/contrail-issu.conf --entrypoint /bin/bash -v /root/.ssh:/root/.ssh --name issu-run-sync $image_id -c "/usr/bin/contrail-issu-run-sync -c /etc/contrail/contrail-issu.conf"
(如果需要，請檢查日誌)
docker exec -t issu-run-sync tail -f /var/log/contrail/issu_contrail_run_sync.log
5. (更新 vrouters)
6. 在結束後停止作業，同步所有資料
docker rm -f issu-run-sync
image_id=`docker images | awk '/config-api/{print $3}' | head -1`
docker run --rm -it --network host -v $(pwd)/contrail-issu.conf:/etc/contrail/contrail-issu.conf --entrypoint /bin/bash -v /root/.ssh:/root/.ssh --name issu-run-sync $image_id -c "/usr/bin/contrail-issu-post-sync -c /etc/contrail/contrail-issu.conf"
docker run --rm -it --network host -v $(pwd)/contrail-issu.conf:/etc/contrail/contrail-issu.conf --entrypoint /bin/bash -v /root/.ssh:/root/.ssh --name issu-run-sync $image_id -c "/usr/bin/contrail-issu-zk-sync -c /etc/contrail/contrail-issu.conf"
7. 從cassandra中去掉舊的節點，加入新的節點
vi issu.conf
(write down this)
[DEFAULTS]
db_host_info={ "172.31.1.154": "ip-172-31-1-154.local"}
config_host_info={ "172.31.1.154": "ip-172-31-1-154.local"}
analytics_host_info={ "172.31.1.154": "ip-172-31-1-154.local"}
control_host_info={ "172.31.1.154": "ip-172-31-1-154.local"}
api_server_ip=172.31.1.154
docker cp issu.conf config_api_1:issu.conf
docker exec -it config_api_1 python /opt/contrail/utils/provision_issu.py -c issu.conf
8. 啟動批處理作業
docker start config_devicemgr_1
docker start config_schema_1
docker start config_svcmonitor_1
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步驟3之後，你可以嘗試使用contrail-api-cli ls -l \*來檢視所有資料是否已成功複製，並且可以透過ist.py ctr nei來檢視controller之間的ibgp是否已啟動。
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步驟4之後，你可以修改舊資料庫，以檢視更改是否可以成功傳播到新資料庫。
接下來，我將在使用編排器和兩個vRouter的條件下，討論更為實際的情況。
1.設定一個controller（帶有一個kube-manager和kubernetes-master）和兩個vRouter
2.設定一個新的controller（帶有一個kube-manager，但kubernetes-master與舊的controller相同）
3.停止批處理作業、新controller的kube-manager和webui
4.啟動ISSU程式並繼續執行，直到開始執行同步（run-sync）
->將在controller之間建立iBGP
5.根據新controller的ansible-ployer一個一個地更新vRouter
->將一個vRouter移至新的vRouter時，新的controller也將獲得k8s-default-pod-network的路由目標（route-target），並且容器之間仍然可以ping通正常工作（ist.py ctr路由摘要以及ping的結果將在稍後附上）
6.將所有vRouter移至新的controller後，停止批處理作業、舊controller上的kube-manager和webui
之後，繼續執行ISSU程式，新controller上啟動批處理作業， kube-manager和webui
->這個階段從開始到結束，你都無法手動更改config-database，因此可能需要一些維護時間
（整個過程可能會持續5至15分鐘，可以ping通，但是直到啟動新的kube-manager時，新容器的建立才能正常工作）
7.最後，停止舊的節點上的control、config和config-database
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請注意，在此示例中，我實際上並未更新模組，因為此設定主要是為了突出ISSU程式（因為即使模組版本相同，ansible-deployer也會重新建立vrouter-agent容器，同時即使完成實際的模組更新，丟包的數量也不會有太大不同。）
old-controller: 172.31.19.25
new-controller: 172.31.13.9
two-vRouters: 172.31.25.102, 172.31.33.175
開始issu之前：
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr nei
Introspect Host: 172.31.19.25
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip -172-31-25-102.local | 172.31.25.102 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
| ip -172-31-33-175.local | 172.31.33.175 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
[ root@ip-172-31-13-9 ~] #
[ root@ip-172-31-13-9 ~] #
[ root@ip-172-31-13-9 ~] #
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr nei
Introspect Host: 172.31.13.9
[ root@ip-172-31-13-9 ~] #
-> iBGP is not configured yet
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr route summary
Introspect Host: 172.31.19.25
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| name | prefixes | paths | primary_paths | secondary_paths | infeasible_paths |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| default-domain: default- | 0 | 0 | 0 | 0 | 0 |
| project:__link_local__:__link_local__.inet .0 | | | | | |
| default-domain: default-project:dci- | 0 | 0 | 0 | 0 | 0 |
| network:__default__.inet .0 | | | | | |
| default-domain: default-project:dci-network:dci- | 0 | 0 | 0 | 0 | 0 |
| network.inet .0 | | | | | |
| default-domain: default-project: default- virtual- | 0 | 0 | 0 | 0 | 0 |
| network: default- virtual-network.inet .0 | | | | | |
| inet .0 | 0 | 0 | 0 | 0 | 0 |
| default-domain: default-project:ip-fabric:ip- | 7 | 7 | 2 | 5 | 0 |
| fabric.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-pod-network | 7 | 7 | 4 | 3 | 0 |
| :k8s- default-pod-network.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-service- | 7 | 7 | 1 | 6 | 0 |
| network:k8s- default-service-network.inet .0 | | | | | |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
[ root@ip-172-31-13-9 ~] #
[ root@ip-172-31-13-9 ~] #
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr route summary
Introspect Host: 172.31.13.9
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| name | prefixes | paths | primary_paths | secondary_paths | infeasible_paths |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| default-domain: default- | 0 | 0 | 0 | 0 | 0 |
| project:__link_local__:__link_local__.inet .0 | | | | | |
| default-domain: default-project:dci- | 0 | 0 | 0 | 0 | 0 |
| network:__default__.inet .0 | | | | | |
| default-domain: default-project:dci-network:dci- | 0 | 0 | 0 | 0 | 0 |
| network.inet .0 | | | | | |
| default-domain: default-project: default- virtual- | 0 | 0 | 0 | 0 | 0 |
| network: default- virtual-network.inet .0 | | | | | |
| inet .0 | 0 | 0 | 0 | 0 | 0 |
| default-domain: default-project:ip-fabric:ip- | 0 | 0 | 0 | 0 | 0 |
| fabric.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-pod-network | 0 | 0 | 0 | 0 | 0 |
| :k8s- default-pod-network.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-service- | 0 | 0 | 0 | 0 | 0 |
| network:k8s- default-service-network.inet .0 | | | | | |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
[ root@ip-172-31-13-9 ~] #
-> 在新的控制器裡沒有匯入路由
[ root@ip-172-31-19-25 contrail-ansible-deployer] # kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE
cirros-deployment -75c98888b9 -6qmcm 1/ 1 Running 0 4m58s 10.47.255.249 ip -172-31-25-102.ap-northeast -1.compute. internal <none>
cirros-deployment -75c98888b9-lxq4k 1/ 1 Running 0 4m58s 10.47.255.250 ip -172-31-33-175.ap-northeast -1.compute. internal <none>
[ root@ip-172-31-19-25 contrail-ansible-deployer] #
/ # ip -o a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000\ link/loopback 00: 00: 00: 00: 00: 00 brd 00: 00: 00: 00: 00: 00
1: lo inet 127.0.0.1/ 8 scope host lo\ valid_lft forever preferred_lft forever
13: eth0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue \ link/ether 02: 6b:dc: 98:ac: 95 brd ff:ff:ff:ff:ff:ff
13: eth0 inet 10.47.255.249/ 12 scope global eth0\ valid_lft forever preferred_lft forever
/ # ping 10.47.255.250
PING 10.47.255.250 ( 10.47.255.250): 56 data bytes
64 bytes from 10.47.255.250: seq= 0 ttl= 63 time= 2.155 ms
64 bytes from 10.47.255.250: seq= 1 ttl= 63 time= 0.904 ms
^C
--- 10.47.255.250 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.904/ 1.529/ 2.155 ms
/ #
-> 兩個vRouter每個都有一個容器，在兩個容器之間ping的結果正常。
在provision_control之後:
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr nei
Introspect Host: 172.31.19.25
+------------------------+---------------+----------+----------+-----------+-------------+-----------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+-----------------+------------+-----------+
| ip -172-31-13-9.local | 172.31.13.9 | 64512 | BGP | internal | Idle | not advertising | 0 | n/a |
| ip -172-31-25-102.local | 172.31.25.102 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
| ip -172-31-33-175.local | 172.31.33.175 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+-----------------+------------+-----------+
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr nei
Introspect Host: 172.31.13.9
[ root@ip-172-31-13-9 ~] #
-> iBGP 在老的控制器上，但是新的控制器還沒有那些配置（在執行pre-sync後，這會被複制到新的控制器上）
在run-sync之後:
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr nei
Introspect Host: 172.31.19.25
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip -172-31-13-9.local | 172.31.13.9 | 64512 | BGP | internal | Established | in sync | 0 | n/a |
| ip -172-31-25-102.local | 172.31.25.102 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
| ip -172-31-33-175.local | 172.31.33.175 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr nei
Introspect Host: 172.31.13.9
+-----------------------+--------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+-----------------------+--------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip -172-31-19-25.local | 172.31.19.25 | 64512 | BGP | internal | Established | in sync | 0 | n/a |
+-----------------------+--------------+----------+----------+-----------+-------------+------------+------------+-----------+
[ root@ip-172-31-13-9 ~] #
-> iBGP 建立起來了，ctr route summary沒有改變，因為新的控制器沒有k8s- default-pod-network的路由目標（route-target），路由目標（route target）過濾組織了匯入這些字首。
在遷移節點到新的controller之後:
/ # ping 10.47.255.250
PING 10.47.255.250 ( 10.47.255.250): 56 data bytes
64 bytes from 10.47.255.250: seq= 0 ttl= 63 time= 1.684 ms
64 bytes from 10.47.255.250: seq= 1 ttl= 63 time= 0.835 ms
64 bytes from 10.47.255.250: seq= 2 ttl= 63 time= 0.836 ms
(snip)
64 bytes from 10.47.255.250: seq= 37 ttl= 63 time= 0.878 ms
64 bytes from 10.47.255.250: seq= 38 ttl= 63 time= 0.823 ms
64 bytes from 10.47.255.250: seq= 39 ttl= 63 time= 0.820 ms
64 bytes from 10.47.255.250: seq= 40 ttl= 63 time= 1.364 ms
64 bytes from 10.47.255.250: seq= 44 ttl= 63 time= 2.209 ms
64 bytes from 10.47.255.250: seq= 45 ttl= 63 time= 0.869 ms
64 bytes from 10.47.255.250: seq= 46 ttl= 63 time= 0.857 ms
64 bytes from 10.47.255.250: seq= 47 ttl= 63 time= 0.855 ms
64 bytes from 10.47.255.250: seq= 48 ttl= 63 time= 0.845 ms
64 bytes from 10.47.255.250: seq= 49 ttl= 63 time= 0.842 ms
64 bytes from 10.47.255.250: seq= 50 ttl= 63 time= 0.885 ms
64 bytes from 10.47.255.250: seq= 51 ttl= 63 time= 0.891 ms
64 bytes from 10.47.255.250: seq= 52 ttl= 63 time= 0.909 ms
64 bytes from 10.47.255.250: seq= 53 ttl= 63 time= 0.867 ms
64 bytes from 10.47.255.250: seq= 54 ttl= 63 time= 0.884 ms
64 bytes from 10.47.255.250: seq= 55 ttl= 63 time= 0.865 ms
64 bytes from 10.47.255.250: seq= 56 ttl= 63 time= 0.840 ms
64 bytes from 10.47.255.250: seq= 57 ttl= 63 time= 0.877 ms
^C
--- 10.47.255.250 ping statistics ---
58 packets transmitted, 55 packets received, 5% packet loss
round-trip min/avg/max = 0.810/ 0.930/ 2.209 ms
/ #
-> 在vrouter-agent 重啟後，可以看到丟了 3個包(序號 40-44)。在遷移vRouter到新的之後，ping工作地很好。
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr nei
檢查主機： 172.31.19.25
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip -172-31-13-9.local | 172.31.13.9 | 64512 | BGP | internal | Established | in sync | 0 | n/a |
| ip -172-31-33-175.local | 172.31.33.175 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr nei
Introspect Host: 172.31.13.9
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip -172-31-19-25.local | 172.31.19.25 | 64512 | BGP | internal | Established | in sync | 0 | n/a |
| ip -172-31-25-102.local | 172.31.25.102 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
[ root@ip-172-31-13-9 ~] #
-> 兩個控制器具有XMPP連線，建立了IBGP
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr route summary
檢查主機: 172.31.19.25
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| name | prefixes | paths | primary_paths | secondary_paths | infeasible_paths |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| default-domain: default- | 0 | 0 | 0 | 0 | 0 |
| project:__link_local__:__link_local__.inet .0 | | | | | |
| default-domain: default-project:dci- | 0 | 0 | 0 | 0 | 0 |
| network:__default__.inet .0 | | | | | |
| default-domain: default-project:dci-network:dci- | 0 | 0 | 0 | 0 | 0 |
| network.inet .0 | | | | | |
| default-domain: default-project: default- virtual- | 0 | 0 | 0 | 0 | 0 |
| network: default- virtual-network.inet .0 | | | | | |
| inet .0 | 0 | 0 | 0 | 0 | 0 |
| default-domain: default-project:ip-fabric:ip- | 7 | 7 | 1 | 6 | 0 |
| fabric.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-pod-network | 7 | 7 | 1 | 6 | 0 |
| :k8s- default-pod-network.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-service- | 7 | 7 | 0 | 7 | 0 |
| network:k8s- default-service-network.inet .0 | | | | | |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
[ root@ip-172-31-13-9 ~] # ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr route summary
檢查主機: 172.31.13.9
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| name | prefixes | paths | primary_paths | secondary_paths | infeasible_paths |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| default-domain: default- | 0 | 0 | 0 | 0 | 0 |
| project:__link_local__:__link_local__.inet .0 | | | | | |
| default-domain: default-project:dci- | 0 | 0 | 0 | 0 | 0 |
| network:__default__.inet .0 | | | | | |
| default-domain: default-project:dci-network:dci- | 0 | 0 | 0 | 0 | 0 |
| network.inet .0 | | | | | |
| default-domain: default-project: default- virtual- | 0 | 0 | 0 | 0 | 0 |
| network: default- virtual-network.inet .0 | | | | | |
| inet .0 | 0 | 0 | 0 | 0 | 0 |
| default-domain: default-project:ip-fabric:ip- | 7 | 7 | 1 | 6 | 0 |
| fabric.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-pod-network | 7 | 7 | 3 | 4 | 0 |
| :k8s- default-pod-network.inet .0 | | | | | |
| default-domain:k8s- default:k8s- default-service- | 7 | 7 | 1 | 6 | 0 |
| network:k8s- default-service-network.inet .0 | | | | | |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
[ root@ip-172-31-13-9 ~] #
-> 因為兩個控制器具有至少一個容器來自k8s- default-pod-network, 它們使用iBGP來交換字首，因此它們具有同一個字首
在將第二個vrouter遷移到新的控制器之後:
/ # ping 10.47.255.250
PING 10.47.255.250 ( 10.47.255.250): 56 data bytes
64 bytes from 10.47.255.250: seq= 0 ttl= 63 time= 1.750 ms
64 bytes from 10.47.255.250: seq= 1 ttl= 63 time= 0.815 ms
64 bytes from 10.47.255.250: seq= 2 ttl= 63 time= 0.851 ms
64 bytes from 10.47.255.250: seq= 3 ttl= 63 time= 0.809 ms
(snip)
64 bytes from 10.47.255.250: seq= 34 ttl= 63 time= 0.853 ms
64 bytes from 10.47.255.250: seq= 35 ttl= 63 time= 0.848 ms
64 bytes from 10.47.255.250: seq= 36 ttl= 63 time= 0.833 ms
64 bytes from 10.47.255.250: seq= 37 ttl= 63 time= 0.832 ms
64 bytes from 10.47.255.250: seq= 38 ttl= 63 time= 0.910 ms
64 bytes from 10.47.255.250: seq= 42 ttl= 63 time= 2.071 ms
64 bytes from 10.47.255.250: seq= 43 ttl= 63 time= 0.826 ms
64 bytes from 10.47.255.250: seq= 44 ttl= 63 time= 0.853 ms
64 bytes from 10.47.255.250: seq= 45 ttl= 63 time= 0.851 ms
64 bytes from 10.47.255.250: seq= 46 ttl= 63 time= 0.853 ms
64 bytes from 10.47.255.250: seq= 47 ttl= 63 time= 0.851 ms
64 bytes from 10.47.255.250: seq= 48 ttl= 63 time= 0.855 ms
64 bytes from 10.47.255.250: seq= 49 ttl= 63 time= 0.869 ms
64 bytes from 10.47.255.250: seq= 50 ttl= 63 time= 0.833 ms
64 bytes from 10.47.255.250: seq= 51 ttl= 63 time= 0.859 ms
64 bytes from 10.47.255.250: seq= 52 ttl= 63 time= 0.866 ms
64 bytes from 10.47.255.250: seq= 53 ttl= 63 time= 0.840 ms
64 bytes from 10.47.255.250: seq= 54 ttl= 63 time= 0.841 ms
64 bytes from 10.47.255.250: seq= 55 ttl= 63 time= 0.854 ms
^C
--- 10.47.255.250 ping statistics ---
56 packets transmitted, 53 packets received, 5% packet loss
round-trip min/avg/max = 0.799/ 0.888/ 2.071 ms
/ #
-> 3 packet loss is seen ( seq 38-42)
[root@ip-172-31-13-9 ~]# ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr nei
Introspect Host: 172.31.19.25
+----------------------+--------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+----------------------+--------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip-172-31-13-9.local | 172.31.13.9 | 64512 | BGP | internal | Established | in sync | 0 | n/a |
+----------------------+--------------+----------+----------+-----------+-------------+------------+------------+-----------+
[root@ip-172-31-13-9 ~]# ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr nei
Introspect Host: 172.31.13.9
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip-172-31-19-25.local | 172.31.19.25 | 64512 | BGP | internal | Established | in sync | 0 | n/a |
| ip-172-31-25-102.local | 172.31.25.102 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
| ip-172-31-33-175.local | 172.31.33.175 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
[root@ip-172-31-13-9 ~]#
-> 新的控制器具有兩個XMPP連線。
[root@ip-172-31-13-9 ~]# ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr route summary
檢查主機：172.31.19.25
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| name | prefixes | paths | primary_paths | secondary_paths | infeasible_paths |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| default-domain: default- | 0 | 0 | 0 | 0 | 0 |
| project:__link_local__:__link_local__.inet.0 | | | | | |
| default-domain: default-project:dci- | 0 | 0 | 0 | 0 | 0 |
| network:__default__.inet.0 | | | | | |
| default-domain: default-project:dci-network:dci- | 0 | 0 | 0 | 0 | 0 |
| network.inet.0 | | | | | |
| default-domain: default-project: default- virtual- | 0 | 0 | 0 | 0 | 0 |
| network: default- virtual-network.inet.0 | | | | | |
| inet.0 | 0 | 0 | 0 | 0 | 0 |
| default-domain: default-project:ip-fabric:ip- | 0 | 0 | 0 | 0 | 0 |
| fabric.inet.0 | | | | | |
| default-domain:k8s- default:k8s- default-pod-network | 0 | 0 | 0 | 0 | 0 |
| :k8s- default-pod-network.inet.0 | | | | | |
| default-domain:k8s- default:k8s- default-service- | 0 | 0 | 0 | 0 | 0 |
| network:k8s- default-service-network.inet.0 | | | | | |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
[root@ip-172-31-13-9 ~]# ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr route summary
檢查主機：172.31.13.9
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| name | prefixes | paths | primary_paths | secondary_paths | infeasible_paths |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
| default-domain: default- | 0 | 0 | 0 | 0 | 0 |
| project:__link_local__:__link_local__.inet.0 | | | | | |
| default-domain: default-project:dci- | 0 | 0 | 0 | 0 | 0 |
| network:__default__.inet.0 | | | | | |
| default-domain: default-project:dci-network:dci- | 0 | 0 | 0 | 0 | 0 |
| network.inet.0 | | | | | |
| default-domain: default-project: default- virtual- | 0 | 0 | 0 | 0 | 0 |
| network: default- virtual-network.inet.0 | | | | | |
| inet.0 | 0 | 0 | 0 | 0 | 0 |
| default-domain: default-project:ip-fabric:ip- | 7 | 7 | 2 | 5 | 0 |
| fabric.inet.0 | | | | | |
| default-domain:k8s- default:k8s- default-pod-network | 7 | 7 | 4 | 3 | 0 |
| :k8s- default-pod-network.inet.0 | | | | | |
| default-domain:k8s- default:k8s- default-service- | 7 | 7 | 1 | 6 | 0 |
| network:k8s- default-service-network.inet.0 | | | | | |
+----------------------------------------------------+----------+-------+---------------+-----------------+------------------+
[root@ip-172-31-13-9 ~]#
-> 老的控制器不再具有字首。
在ISSU過程結束後，新的kube-manager 啟動：
[root@ip-172-31-19-25 ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE
cirros-deployment-75c98888b9-6qmcm 1/1 Running 0 34m 10.47.255.249 ip-172-31-25-102.ap-northeast-1.compute. internal <none>
cirros-deployment-75c98888b9-lxq4k 1/1 Running 0 34m 10.47.255.250 ip-172-31-33-175.ap-northeast-1.compute. internal <none>
cirros-deployment2-648b98685f-b8pxw 1/1 Running 0 15s 10.47.255.247 ip-172-31-25-102.ap-northeast-1.compute. internal <none>
cirros-deployment2-648b98685f-nv7z9 1/1 Running 0 15s 10.47.255.248 ip-172-31-33-175.ap-northeast-1.compute. internal <none>
[root@ip-172-31-19-25 ~]#
-> 透過新的IP建立容器（10.47.255.247, 10.47.255.248 是來自新控制器的新地址）
[root@ip-172-31-13-9 ~]# ./contrail-introspect-cli/ist.py --host 172.31.19.25 ctr nei
Introspect Host: 172.31.19.25
+----------------------+--------------+----------+----------+-----------+--------+-----------------+------------+-----------------------------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+----------------------+--------------+----------+----------+-----------+--------+-----------------+------------+-----------------------------+
| ip-172-31-13-9.local | 172.31.13.9 | 64512 | BGP | internal | Active | not advertising | 1 | 2019-Jun-23 05:37:02.614003 |
+----------------------+--------------+----------+----------+-----------+--------+-----------------+------------+-----------------------------+
[root@ip-172-31-13-9 ~]# ./contrail-introspect-cli/ist.py --host 172.31.13.9 ctr nei
Introspect Host: 172.31.13.9
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| peer | peer_address | peer_asn | encoding | peer_type | state | send_state | flap_count | flap_time |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
| ip-172-31-25-102.local | 172.31.25.102 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
| ip-172-31-33-175.local | 172.31.33.175 | 0 | XMPP | internal | Established | in sync | 0 | n/a |
+------------------------+---------------+----------+----------+-----------+-------------+------------+------------+-----------+
[root@ip-172-31-13-9 ~]#
-> 新控制器不再有iBGP路由到舊的控制器。舊控制器依然具有iBGP路由條目，雖然這個過程很快就要停止:)
在停止了就的控制器後，配置：
[root@ip-172-31-19-25 ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE
cirros-deployment-75c98888b9-6qmcm 1/1 Running 0 48m 10.47.255.249 ip-172-31-25-102.ap-northeast-1.compute. internal <none>
cirros-deployment-75c98888b9-lxq4k 1/1 Running 0 48m 10.47.255.250 ip-172-31-33-175.ap-northeast-1.compute. internal <none>
cirros-deployment2-648b98685f-b8pxw 1/1 Running 0 13m 10.47.255.247 ip-172-31-25-102.ap-northeast-1.compute. internal <none>
cirros-deployment2-648b98685f-nv7z9 1/1 Running 0 13m 10.47.255.248 ip-172-31-33-175.ap-northeast-1.compute. internal <none>
cirros-deployment3-68fb484676-ct9q9 1/1 Running 0 18s 10.47.255.245 ip-172-31-25-102.ap-northeast-1.compute. internal <none>
cirros-deployment3-68fb484676-mxbzq 1/1 Running 0 18s 10.47.255.246 ip-172-31-33-175.ap-northeast-1.compute. internal <none>
[root@ip-172-31-19-25 ~]#
-> 新容器依然可以被建立
[root@ip-172-31-25-102 ~]# contrail-status
Pod Service Original Name State Id Status
vrouter agent contrail-vrouter-agent running 9a46a1a721a7 Up 33 minutes
vrouter nodemgr contrail-nodemgr running 11fb0a7bc86d Up 33 minutes
vrouter kernel module is PRESENT
== Contrail vrouter ==
nodemgr: active
agent: active
[ root@ip-172-31-25-102 ~] #
-> 具有新控制器的vRouter工作良好
/ # ping 10.47.255.250
PING 10.47.255.250 ( 10.47.255.250): 56 data bytes
64 bytes from 10.47.255.250: seq= 0 ttl= 63 time= 1.781 ms
64 bytes from 10.47.255.250: seq= 1 ttl= 63 time= 0.857 ms
^C
--- 10.47.255.250 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.857/ 1.319/ 1.781 ms
/ #
-> 在vRouter之間Ping成功了
-
如果沒有向後相容性，則需要ISSU
-
如果沒有向後相容性，則需要ifdown vhost0，這將導致最少5-10秒的流量損失，因此實際上意味著需要將流量轉移到其它節點，如實時遷移（live migration）
-
由於vrouter-agent使用netlink與vrouter.ko同步資料，因此架構更改可能導致vrouter-agent發生意外行為（例如Ksync logic上的vrouter-agent分段錯誤）
-
如果沒有向後相容性，則需要更新kernel，因此這意味著需要將流量移至其它節點
-
當vrouter.ko具有不同的in-kernal API時，無法由kernel載入，並且無法建立vhost0和vrouter-agent
-
如果執行良好，請使用就地更新；如果由於某些原因無法執行，或者需要回滾操作，此時需要使用ISSU
-
voidIFMapGraphWalker::AddNodesToWhitelist():
-
第八篇： TF支援API一覽
-
第九篇： TF如何連線到物理網路
-
第十篇： TF基於應用程式的安全策略
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/69957171/viewspace-2693907/，如需轉載，請註明出處，否則將追究法律責任。
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