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本檔案介紹設定、驗證和疑難排解適用於WebRTC的Expressway上的Cisco Meeting Server(CMS)多個WebBridge(WB)的步驟。
思科建議您瞭解以下主題:
配置先決條件:
本文中的資訊是根據特定實驗室環境內的裝置所建立。如果您的安裝處於活動狀態,請確保您瞭解任何命令或配置更改的潛在影響。
從X8.11版本開始向Expressway新增了對通過Expressway使用多個WB的WebRTC代理的支援,從而實現了跨WB的冗餘和負載平衡。
在X8.11之前的版本中,僅支援負載均衡,當Expressway選擇的WEB關閉時,連線會失敗。
Expressway-C使用Guest account client URI查詢DNS來發現WB IP地址,然後從X8.11使用循環在這些WB之間平均分配WebRTC連線。
Expressway-C現在使用下列過程維護它知道屬於WB的IP地址的動態清單:
附註:本文檔重點介紹在Expressway上的多個WB整合,而不是配置先決條件上的第一個專案符號點指南中介紹的WebRTC代理的完整配置。
1.為訪客帳戶客戶端URI解析到的每個WB節點配置以下DNS SRV記錄:
在此示例中,應用以下內容:
來賓帳戶客戶端URI:joinext.vngtp.cms
WB1 FQDN:cmsvngtp.vngtp.cms
WB2 FQDN:cms2.vngtp.cms
WB3 FQDN:cmsdb.vngtp.cms
附註:以下假設cmsdb.vngtp.cms的容量大於其他callbridge的容量,因此優先順序較低,以允許從Expressway-C到那裡進行更多連線。
為每個主機完全限定域名(FQDN)配置了以下DNS SRV記錄:
SRV記錄 | 連接埠 | 優先順序機制 | 重量 | 解析為 |
_cms-web._tls.joinext.vngtp.cms | 443 | 20 | 1 | cmsvngtp.vngtp.cms |
_cms-web._tls.joinext.vngtp.cms | 443 | 15 | 1 | cms2.vngtp.cms |
_cms-web._tls.joinext.vngtp.cms | 443 | 10 | 1 | cmsdb.vngtp.cms |
DNS伺服器示例:
附註:要通過Expressway實現更好的WebRTC連線的負載均衡(假設所有伺服器都具有相同的容量),請確保上述所有SRV記錄的優先順序和權重相同,請參閱以下示例:
SRV記錄 | 連接埠 | 優先順序機制 | 重量 | 解析為 |
_cms-web._tls.joinext.vngtp.cms | 443 | 0 | 0 | cmsvngtp.vngtp.cms |
_cms-web._tls.joinext.vngtp.cms | 443 | 0 | 0 | cms2.vngtp.cms |
_cms-web._tls.joinext.vngtp.cms | 443 | 0 | 0 | cmsdb.vngtp.cms |
2.使用外部FQDN將WB整合到Expressway-C上(由外部方使用):
以下圖示範例:
使用本節內容,確認您的組態是否正常運作。
檢查以確保Expressway-C能夠連線到FQDN解析的所有WB。
導覽至Configuration > Unified Communications > Cisco Meeting Server。
Expressway-C能夠訪問WB後,狀態將為Active,如下圖所示:
將WB新增到Expressway-C時會發生什麼情況的一些日誌審查:
a.Expressway-C在其資料庫中為Webbridge FQDN建立用於命令執行的對象UUID:
2018-07-09T14:09:10.773+02:00 vcsc httpd[8724]: web: Event="System Configuration Changed" Detail="commands/cmsadd/uuid - created with value: 'd86cf754-dc5c-438f-900f-51e5c702b94e'" Src-ip="192.168.1.5" Src-port="51223" User="admin" Level="1" UTCTime="2018-07-09 12:09:10" 2018-07-09T14:09:10.773+02:00 vcsc httpd[8724]: web: Event="System Configuration Changed" Detail="commands/cmsadd/time_started - created with value: '0'" Src-ip="192.168.1.5" Src-port="51223" User="admin" Level="1" UTCTime="2018-07-09 12:09:10" 2018-07-09T14:09:10.773+02:00 vcsc httpd[8724]: web: Event="System Configuration Changed" Detail="commands/cmsadd/time_finished - created with value: '0'" Src-ip="192.168.1.5" Src-port="51223" User="admin" Level="1" UTCTime="2018-07-09 12:09:10" 2018-07-09T14:09:10.773+02:00 vcsc httpd[8724]: web: Event="System Configuration Changed" Detail="commands/cmsadd/command_state - created with value: 'queued'" Src-ip="192.168.1.5" Src-port="51223" User="admin" Level="1" UTCTime="2018-07-09 12:09:10" 2018-07-09T14:09:10.773+02:00 vcsc httpd[8724]: web: Event="System Configuration Changed" Detail="commands/cmsadd/command_error - created with value: ''" Src-ip="192.168.1.5" Src-port="51223" User="admin" Level="1" UTCTime="2018-07-09 12:09:10" 2018-07-09T14:09:10.773+02:00 vcsc httpd[8724]: web: Event="System Configuration Changed" Detail="commands/cmsadd/name - created with value: 'joinext.vngtp.cms'" Src-ip="192.168.1.5" Src-port="51223" User="admin" Level="1" UTCTime="2018-07-09 12:09:10"
b.查詢SRV記錄_cms-web._tls.<WB_FQDN>的DNS,在此示例中_cms web._tls.joinext.vngtp.cms:
205 2018-07-09 12:09:11.029 192.168.1.64 192.168.1.61 DNS 91 Standard query 0xfb10 SRV _cms-web._tls.joinext.vngtp.cms 206 2018-07-09 12:09:11.032 192.168.1.61 192.168.1.64 DNS 246 Standard query response 0xfb10 SRV _cms-web._tls.joinext.vngtp.cms SRV 15 1 443 cms2.vngtp.cms SRV 20 1 443 cmsvngtp.vngtp.cms SRV 10 1 443 cmsdb.vngtp.cms A 192.168.1.211 A 192.168.1.66 A 192.168.1.212
c.在其資料庫中為每個WB建立單個條目,這些條目與用於整合它們的外部聯接URI相關:
2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms name: joinext.vngtp.cms" 2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms guid: 81db7b67-2aa9-4f64-8d74-04c4037397a8" 2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms dnsname: cms2.vngtp.cms" 2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms address: 192.168.1.211" 2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms priority: 15" 2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms weight: 1" 2018-07-09T14:09:11.187+02:00 vcsc UTCTime="2018-07-09 12:09:11,187" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid cb7d5de8-1ab3-4a0d-a52a-8dbc885effeb name: joinext.vngtp.cms port: 443" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms name: joinext.vngtp.cms" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms guid: 97d8fa86-7de4-4410-9767-7bc8b1eeaced" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms dnsname: cmsvngtp.vngtp.cms" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms address: 192.168.1.66" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms priority: 20" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms weight: 1" 2018-07-09T14:09:11.193+02:00 vcsc UTCTime="2018-07-09 12:09:11,193" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0408bdd0-9ada-45a0-834d-ccda166e8006 name: joinext.vngtp.cms port: 443" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms name: joinext.vngtp.cms" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms guid: 9c788380-6601-4dba-96e0-739511728369" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms dnsname: cmsdb.vngtp.cms" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms address: 192.168.1.212" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms priority: 10" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms weight: 1" 2018-07-09T14:09:11.206+02:00 vcsc UTCTime="2018-07-09 12:09:11,206" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid b151839e-a0dd-4176-bbed-ad28e05e9283 name: joinext.vngtp.cms port: 443"
d.Expressway-C會在HTTP允許清單中,為HTTPS和WebSocket流量建立常規訪問規則 WB常規路徑的自動入站規則:
本節提供的資訊可用於對組態進行疑難排解。
以下是在將WB整合到Expressway後出現的一些典型問題:
1.在Expressway-C的CMS頁面上未看到優先順序和權重,如下圖所示:
需要的日誌:
要在日誌中查詢的內容:
a.在診斷日誌中:
2018-07-13T14:44:21.688+02:00 vcsc UTCTime="2018-07-13 12:44:21,688" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0ab708c9-4ce1-47b3-9bb6-2964baf39bb3 name: joinext.vngtp.cms guid: 97d8fa86-7de4-4410-9767-7bc8b1eeaced" 2018-07-13T14:44:21.688+02:00 vcsc UTCTime="2018-07-13 12:44:21,688" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0ab708c9-4ce1-47b3-9bb6-2964baf39bb3 name: joinext.vngtp.cms dnsname: joinext.vngtp.cms" 2018-07-13T14:44:21.688+02:00 vcsc UTCTime="2018-07-13 12:44:21,688" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0ab708c9-4ce1-47b3-9bb6-2964baf39bb3 name: joinext.vngtp.cms address: 192.168.1.66" 2018-07-13T14:44:21.688+02:00 vcsc UTCTime="2018-07-13 12:44:21,688" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0ab708c9-4ce1-47b3-9bb6-2964baf39bb3 name: joinext.vngtp.cms priority: 65536" 2018-07-13T14:44:21.688+02:00 vcsc UTCTime="2018-07-13 12:44:21,688" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0ab708c9-4ce1-47b3-9bb6-2964baf39bb3 name: joinext.vngtp.cms weight: 0" 2018-07-13T14:44:21.688+02:00 vcsc UTCTime="2018-07-13 12:44:21,688" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 0ab708c9-4ce1-47b3-9bb6-2964baf39bb3 name: joinext.vngtp.cms port: 443"
2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms name: joinext.vngtp.cms" 2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms guid: 81db7b67-2aa9-4f64-8d74-04c4037397a8" 2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms dnsname: joinext.vngtp.cms" 2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms address: 192.168.1.211" 2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms priority: 65536" 2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms weight: 0" 2018-07-13T14:44:21.702+02:00 vcsc UTCTime="2018-07-13 12:44:21,702" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 4b1b99fb-1b8f-400e-b066-d8906ffcd6fc name: joinext.vngtp.cms port: 443"
2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms name: joinext.vngtp.cms" 2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms guid: 9c788380-6601-4dba-96e0-739511728369" 2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms dnsname: joinext.vngtp.cms" 2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms address: 192.168.1.212" 2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms priority: 65536" 2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms weight: 0" 2018-07-13T14:44:21.706+02:00 vcsc UTCTime="2018-07-13 12:44:21,706" Event="System Configuration Changed" Node="clusterdb@127.0.0.1" PID="<0.488.0>" Detail="xconfiguration edgeCmsServerAddresses uuid 6cc95c70-0636-4190-85f2-333b86b29c91 name: joinext.vngtp.cms port: 443"
b.在封包擷取中:
解決方案:
檢查並確保在Expressway-C使用的DNS伺服器中有以下內容:
2.使用外部聯接URL新增集群後,一個或多個WEB處於Active狀態,如下圖所示:
需要的日誌:
要在日誌中查詢的內容:
a.診斷日誌:
Detail="CMS check failed" Address="192.168.1.212", Error="[Errno 111] Connection refused"
b.在封包擷取中:
解決方案:
使用CLI上的webbridge enable 指令,確保在CMS節點上啟用WB。