firstEp 鑺傜偣鍦ㄦ棤鏁版嵁鐨勬儏鍐典笅閲嶆柊鍚姩锛岀浉褰撲簬鏂板垱寤轰簡涓€涓泦缇わ紝瀹冮噸鏂板垵濮嬪寲涓轰竴涓柊闆嗙兢锛堥噸鏂扮敓鎴愪簡 clusterid锛夛紝浣嗘鏃跺師闆嗙兢锛堟棫鐨 clusterId锛変腑鐨勫叾瀹 N-1 涓妭鐐逛粛鐒跺悜瀹冧滑鎵€淇濆瓨鐨 firstEp 鍙戦€佸績璺筹紝鑰屾敹鍒板績璺虫秷鎭殑 firstEp 宸茬粡鏄竴涓柊鐨勯泦缇や簡锛屾墍浠ヤ細鎷掔粷蹇冭烦娑堟伅锛岃繑鍥炶妭鐐逛笉瀛樺湪锛岃姹傚績璺冲彂閫佹柟涓嬬嚎锛岃繖浜涜妭鐐规敹鍒颁笅绾块€氱煡鍚庝細涓诲姩涓嬬嚎锛孅strong>鐩存帴瀵艰嚧鍘熼泦缇や腑鐨勬墍鏈夎妭鐐归兘涓嶅彲鐢?/strong>銆侟/p>

3. 瑙ｅ喅鍔炴硶

涓鸿妭鐐瑰績璺炽€乺aft 蹇冭烦澧炲姞瀵 clusterid 鐨勫垽鏂紝鍗冲 clusterid 杩涜闅旂锛岃鍏锋湁涓嶅悓 clusterid 鐨勮妭鐐瑰彲浠ョ嫭绔嬭繍琛屻€傝繖绉嶈В鍐冲姙娉曞彲浠ュ簲瀵硅妭鐐瑰凡缁忓湪绌虹櫧鏁版嵁涓婇噸鍚殑鎯呭喌銆侟/p>

4. 瑙ｅ喅鍚庣殑鏁堟灉

鍦ㄥ嚭鐜扮鐩樻晠闅滃悗锛宖irstEp 鑺傜偣鍚姩鍚庯紝浼氬舰鎴愪袱涓泦缇わ紝涓€涓槸 firstEp 鑺傜偣褰㈡垚鐨勫崟鑺傜偣鏂伴泦缇わ紝鍙︿竴涓槸鎵€鏈夊叾浠栬妭鐐逛繚鎸佹棫 clusterid 鐨勬棫闆嗙兢銆備袱涓泦缇ゅ彲浠ョ嫭绔嬩笖浜掍笉骞叉壈鐨勬甯歌繍琛屻€侟/p>

RAFT Leader Rebalance锛圱Dengine Enterprise 浼佷笟鐗堬級

1. 闂

姣旇緝甯歌鐨勪娇鐢ㄥ満鏅紝鍦ㄦ粴鍔ㄥ崌绾у悗锛孅strong>鎵€鏈夌殑 leader 閮借璧跺埌涓€涓妭鐐逛笂锛屾暣涓泦缇や弗閲嶅け琛狘/strong>銆侟/p>

2. 瑙ｅ喅鍔炴硶

澧炲姞 balance vgroup leader; 鐨 SQL 鍛戒护锛岀敱 DBA 浜哄伐瑙﹀彂闆嗙兢鍐嶅钩琛★紝璇ュ懡浠や細渚濇椤哄簭瀵规瘡涓 vgroup 寮哄埗閲嶆柊閫変妇 RAFT leader銆傚洜涓洪€変妇鏄殢鏈虹殑锛屾墍浠ユ垜浠彲浠ラ€氳繃閫変妇璁 leader 杩佺Щ鍒板叾浠栫殑鑺傜偣涓娿€侟/p>

3. 瑙ｅ喅鍚庣殑鏁堟灉

閫変妇鐞嗚涓婇殢鏈洪€夊嚭 leader锛屽鑷 leader 鏁ｅ紑鐨勭粨鏋溿€傜悊璁轰笂浼氬潎鍖€锛屽疄闄呬笂涓嶄細缁濆鍧囧寑銆侟/p>

Raft Learner

1. 闂

鍦ㄥ壇鏈彉鏇存椂锛坈reate mnode, alter db replia锛夛紝濡傛灉瀛橀噺鏁版嵁锛堝厓鏁版嵁鎴朁a href="/" data-internallinksmanager029f6b8e52c="5" title="鏃跺簭鏁版嵁" target="_blank" rel="noopener">鏃跺簭鏁版嵁锛夐噺姣旇緝澶ф椂锛孅strong>鐩稿簲鎿嶄綔浼氭墽琛屽緢闀挎椂闂滁/strong>锛岃绛夊緟瀛橀噺鏁版嵁鍚屾瀹屾垚鍚庡懡浠ゆ墠鑳芥墽琛屽畬鎴愶紝骞朵笖鍦ㄦ鏈熼棿浼氶樆濉炴暟鎹啓鍏?/strong>銆侟/p>

2. 瑙ｅ喅鍔炴硶

鍦 Leader/Follower/Candidate 涔嬪寮曞叆绗洓绉 Raft 瑙掕壊鈥斺€擱aft learner銆俁aft Learner 鍙悓姝ユ暟鎹笉鍙備笌閫変富锛屼篃涓嶅弬涓庢暟鎹啓鍏ユ椂鐨勪竴鑷存€у崗璁€傚綋 Raft Learner 鐨勬暟鎹悓姝ヨ繘搴﹁杩戒笂鍚庢墠浼氬彉韬负 Follower锛屾垚涓 Raft 闆嗙兢鐨勪竴閮ㄥ垎銆侟strong>杩欐牱鍛戒护铏界劧鎵ц寰堥暱鏃堕棿锛屼絾涓嶄細闃诲鍐欏叆銆侟/p>

3. 鍙楀奖鍝嶇殑鍛戒护

Create mnode on dnode id;

ALTER DATABASE power replica 3;

4. 瑙ｅ喅鍚庣殑鏁堟灉

鍓湰鍙樻洿鏃讹紝涓嶄細鍐嶉樆濉炲啓鍏ャ€傜浉搴旂殑鍛戒护鎵ц鍙互寰堝揩杩斿洖銆侟/p>

Restore dnode锛圱Dengine Enterprise 浼佷笟鐗堬級

1. 闂

鏁版嵁鐩樺嚭鐜伴棶棰橈紝閲嶆柊鎸傝浇鏂版暟鎹洏锛岃繖涓妭鐐逛笂鎵€鏈夋暟鎹洰褰曢兘涓㈠け銆侟/p>

2. 瑙ｅ喅鍔炴硶

澧炲姞鍛戒护锛欬/p>

restore dnode 锛? 鎭㈠dnode涓婄殑mnode锛屾墍鏈塿node鍜宷node

restore mnode on dnode 锛? 鎭㈠dnode涓婄殑mnode

restore vnode on dnode  锛? 鎭㈠dnode涓婄殑鎵€鏈塿node

restore qnode on dnode 锛? 鎭㈠dnode涓婄殑qnode

璇ュ懡浠わ紝浠 mnode 璇诲彇鑺傜偣涓叧浜 mndoe銆乿node銆乹node 鐨勪俊鎭紝鎸夌収杩欎簺鍦ㄨ妭鐐归噸寤 mnode銆乿node銆乹node锛屽湪閲嶅缓缁撴潫鍚庯紝浼氬紑濮嬩粠鍏朵粬鍓湰澶嶅埗鏁版嵁銆侟/p>

3. 瑙ｅ喅鍚庣殑鏁堟灉

鎸夌収鍘熸湁鐨 taos.cfg 鐨勯厤缃惎鍔 taosd锛岃鑺傜偣浼氳嚜鍔ㄥ姞鍏ョ兢锛屽苟涓 dnode 鏄剧ず涓 ready锛屽嵆 online 鐘舵€併€傚湪鑺傜偣鍙樹负 online 鍚庯紝閫氳繃鍛戒护鍙仮澶嶅叏閮 mnode銆乿node銆乹node锛屼篃鍙互鍒嗗埆鎭㈠銆侟/p>

4. 鍔熻兘闄愬埗

璇ュ姛鑳芥槸鍩轰簬宸叉湁鐨勫鍒跺姛鑳界殑鎭㈠锛屼笉鏄伨闅炬仮澶嶆垨鑰呭浠芥仮澶嶏紝鎵€浠ュ浜 mnode 鍜 vnode 鏉ヨ锛屼娇鐢ㄨ鍛戒护涓€瀹氭槸杩樺瓨鍦ㄥ叾浠 mnode 鍜 vnode 鐨勫叾浠栧壇鏈€傝鍛戒护涓嶈兘淇鏁版嵁鐩綍涓釜鍒枃浠剁殑鎹熷潖鎴栬€呬涪澶憋紝鏄暣浣撶殑鎭㈠涓€涓 mnode 鎴栬€ vnode銆侟/p>