准备目录

rm -rf /compile/cluster-restore/shd2*

mkdir -p /compile/cluster-restore/shd21/data/db

mkdir -p /compile/cluster-restore/shd21/log

mkdir -p /compile/cluster-restore/shd22/data/db

mkdir -p /compile/cluster-restore/shd22/log

mkdir -p /compile/cluster-restore/shd23/data/db

mkdir -p /compile/cluster-restore/shd23/log

操作步骤

步骤 1 准备单节点配置文件和目录，以单节点方式启动进程。

配置文件如下（restoreconfig/single_40309.yaml）。

net: 
  bindIp: 127.0.0.1 
  port: 40309 
  unixDomainSocket: {enabled: false} 
processManagement: {fork: true, pidFilePath: /compile/cluster-restore/shd21/mongod.pid} 
storage: 
  dbPath: /compile/cluster-restore/shd21/data/db/ 
  directoryPerDB: true 
  engine: wiredTiger 
  wiredTiger: 
    collectionConfig: {blockCompressor: snappy} 
    engineConfig: {directoryForIndexes: true, journalCompressor: snappy} 
    indexConfig: {prefixCompression: true} 
systemLog: {destination: file, logAppend: true, logRotate: reopen, path: /compile/cluster-restore/shd21/log/mongod.log}

准备数据，将解压后的shardsvr2文件拷贝到单节点dbPath目录下。

cp -aR

/compile/download/backups/cac1efc8e65e42ecad8953352321bfeein02_92b196d2401041a7af869a2a3cab7079no02/* /compile/cluster-restore/shd21/data/db/

启动进程。

./mongod -f restoreconfig/single_40309.yaml

步骤 2 连接单节点，执行配置命令。

连接命令：./mongo --host 127.0.0.1 --port 40309

执行如下命令，修改副本集配置信息。

var cf=db.getSiblingDB('local').system.replset.findOne();

cf['members'][0]['host']='127.0.0.1:40309';

cf['members'][1]['host']='127.0.0.1:40310';

cf['members'][2]['host']='127.0.0.1:40311';

cf['members'][0]['hidden']=false;

cf['members'][1]['hidden']=false;

cf['members'][2]['hidden']=false;

cf['members'][0]['priority']=1;

cf['members'][1]['priority']=1;

cf['members'][2]['priority']=1;

db.getSiblingDB('local').system.replset.remove({});

db.getSiblingDB('local').system.replset.insert(cf)

执行如下命令，清理内置账号。

db.getSiblingDB('admin').dropAllUsers();

db.getSiblingDB('admin').dropAllRoles();

执行如下命令，更新configsvr信息。

var vs = db.getSiblingDB('admin').system.version.find();

while (vs.hasNext()) {

var curr = vs.next();

if (curr.hasOwnProperty('configsvrConnectionString')) {

db.getSiblingDB('admin').system.version.update({'_id' : curr._id}, {$set: {'configsvrConnectionString': 'config/127.0.0.1:40303,127.0.0.1:40304,127.0.0.1:40305'}});

}

}

执行如下命令，关闭单节点进程。

db.getSiblingDB('admin').shutdownServer();

步骤 3 搭建shardsvr2副本集。

准备副本集配置文件和目录，将shardsvr2节点的dbPath文件拷贝到其他两个节点目录下。

cp -aR /compile/cluster-restore/shd21/data/db/ /compile/cluster-restore/shd22/data/db/

cp -aR /compile/cluster-restore/shd21/data/db/ /compile/cluster-restore/shd23/data/db/

修改shardsvr2-1节点配置文件，增加副本集配置属性（restoreconfig/shardsvr_40309.yaml）。

--replication.replSetName 的值，参考该章节中的shard的_id信息。

net: 
  bindIp: 127.0.0.1 
  port: 40309 
  unixDomainSocket: {enabled: false} 
processManagement: {fork: true, pidFilePath: /compile/cluster-restore/shd21/mongod.pid} 
replication: {replSetName: shard_2} 
sharding: {archiveMovedChunks: false, clusterRole: shardsvr} 
storage: 
  dbPath: /compile/cluster-restore/shd21/data/db/ 
  directoryPerDB: true 
  engine: wiredTiger 
  wiredTiger: 
    collectionConfig: {blockCompressor: snappy} 
    engineConfig: {directoryForIndexes: true, journalCompressor: snappy} 
    indexConfig: {prefixCompression: true} 
systemLog: {destination: file, logAppend: true, logRotate: reopen, path: /compile/cluster-restore/shd21/log/mongod.log}

启动进程。

./mongod -f restoreconfig/shardsvr_40309.yaml

修改shardsvr2-2节点配置文件，增加副本集配置属性（restoreconfig/shardsvr_40310.yaml）。

--replication.replSetName 的值，参考该章节中的shard的_id信息。

net: 
  bindIp: 127.0.0.1 
  port: 40310 
  unixDomainSocket: {enabled: false} 
processManagement: {fork: true, pidFilePath: /compile/cluster-restore/shd22/mongod.pid} 
replication: {replSetName: shard_2} 
sharding: {archiveMovedChunks: false, clusterRole: shardsvr} 
storage: 
  dbPath: /compile/cluster-restore/shd22/data/db/ 
  directoryPerDB: true 
  engine: wiredTiger 
  wiredTiger: 
    collectionConfig: {blockCompressor: snappy} 
    engineConfig: {directoryForIndexes: true, journalCompressor: snappy} 
    indexConfig: {prefixCompression: true} 
systemLog: {destination: file, logAppend: true, logRotate: reopen, path: /compile/cluster-restore/shd22/log/mongod.log}

启动进程。

./mongod -f restoreconfig/shardsvr_40310.yaml

修改shardsvr2-3节点配置文件，增加副本集配置属性（restoreconfig/shardsvr_40311.yaml）。

--replication.replSetName 的值，参考该章节中的shard的_id信息。

net: 
  bindIp: 127.0.0.1 
  port: 40311 
  unixDomainSocket: {enabled: false} 
processManagement: {fork: true, pidFilePath: /compile/cluster-restore/shd23/mongod.pid} 
replication: {replSetName: shard_2} 
sharding: {archiveMovedChunks: false, clusterRole: shardsvr} 
storage: 
  dbPath: /compile/cluster-restore/shd23/data/db/ 
  directoryPerDB: true 
  engine: wiredTiger 
  wiredTiger: 
    collectionConfig: {blockCompressor: snappy} 
    engineConfig: {directoryForIndexes: true, journalCompressor: snappy} 
    indexConfig: {prefixCompression: true} 
systemLog: {destination: file, logAppend: true, logRotate: reopen, path: /compile/cluster-restore/shd23/log/mongod.log}

启动进程。

./mongod -f restoreconfig/shardsvr_40311.yaml

步骤 4 等待选主成功。

./mongo --host 127.0.0.1 --port 40309

执行命令rs.status()，查看是否已存在主节点Primary。