Parul Chourasia's questions

我正在尝试在 centos VM 上安装 mongoDb，并关注了几个站点，例如 https://linuxize.com/post/how-to-install-mongodb-on-centos-7/，https://www.digitalocean.com/ community/tutorials/how-to-install-mongodb-on-centos-7 ，但在 Cli 中给出 mongod 命令时无法连接/进入 MongoDB。有人对此有任何想法吗？提前致谢。

输出mongod：

-460f-4bb5-a5d7-0bbe48f3246a") }
2019-08-26T15:21:13.417+0530 I  INDEX    [initandlisten] index build: done building index _id_ on ns admin.system.version
2019-08-26T15:21:13.417+0530 I  SHARDING [initandlisten] Marking collection admin.system.version as collection version: <unsharded>
2019-08-26T15:21:13.417+0530 I  COMMAND  [initandlisten] setting featureCompatibilityVersion to 4.2
2019-08-26T15:21:13.421+0530 I  SHARDING [initandlisten] Marking collection local.system.replset as collection version: <unsharded>
2019-08-26T15:21:13.421+0530 I  STORAGE  [initandlisten] Flow Control is enabled on this deployment.
2019-08-26T15:21:13.422+0530 I  SHARDING [initandlisten] Marking collection admin.system.roles as collection version: <unsharded>
2019-08-26T15:21:13.422+0530 I  STORAGE  [initandlisten] createCollection: local.startup_log with generated UUID: 660f8f2a-c6d0-4a0c-a4bb-0f975d1f207e and options: { c485760 }

2019-08-26T15:21:13.426+0530 I  INDEX    [initandlisten] index build: done building index _id_ on ns local.startup_log
2019-08-26T15:21:13.427+0530 I  SHARDING [initandlisten] Marking collection local.startup_log as collection version: <unsharded>
2019-08-26T15:21:13.427+0530 I  FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/data/db/diagnostic.data'
2019-08-26T15:21:13.428+0530 I  SHARDING [LogicalSessionCacheRefresh] Marking collection config.system.sessions as collection version: <unsharded>
2019-08-26T15:21:13.428+0530 I  NETWORK  [initandlisten] Listening on /tmp/mongodb-27017.sock
2019-08-26T15:21:13.428+0530 I  NETWORK  [initandlisten] Listening on 127.0.0.1
2019-08-26T15:21:13.428+0530 I  NETWORK  [initandlisten] waiting for connections on port 27017
2019-08-26T15:21:13.428+0530 I  CONTROL  [LogicalSessionCacheReap] Sessions collection is not set up; waiting until next sessions reap interval: config.system.sessions
2019-08-26T15:21:13.429+0530 I  STORAGE  [LogicalSessionCacheRefresh] createCollection: config.system.sessions with provided UUID: 45ed25cc-1dbb-4f38-8333-cf36ae8bd473 UUID("45ed25cc-1dbb-4f38-8333-cf36ae8bd473") }
2019-08-26T15:21:13.433+0530 I  INDEX    [LogicalSessionCacheRefresh] index build: done building index _id_ on ns config.system.sessions
2019-08-26T15:21:13.438+0530 I  INDEX    [LogicalSessionCacheRefresh] index build: starting on config.system.sessions properties: { v: 2, key: { lastUse: 1 }, name: "lnfig.system.sessions", expireAfterSeconds: 1800 } using method: Hybrid
2019-08-26T15:21:13.439+0530 I  INDEX    [LogicalSessionCacheRefresh] build may temporarily use up to 500 megabytes of RAM
2019-08-26T15:21:13.439+0530 I  INDEX    [LogicalSessionCacheRefresh] index build: collection scan done. scanned 0 total records in 0 seconds
2019-08-26T15:21:13.439+0530 I  INDEX    [LogicalSessionCacheRefresh] index build: inserted 0 keys from external sorter into index in 0 seconds
2019-08-26T15:21:13.440+0530 I  INDEX    [LogicalSessionCacheRefresh] index build: done building index lsidTTLIndex on ns config.system.sessions
2019-08-26T15:26:13.428+0530 I  SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>

我想执行下面的代码，但它在 vi 中用红色突出显示代码中的错误。在sudo ssh -t root@$ip << EOF line 之后出现错误。我在哪里编写错误的脚本？

#!/bin/bash
cassandra_home=$(python -c "import json; print \",\".join(json.load(open('${repair.json}','r'))[\"cassandra_home\"])")
iplist[@]=$(python -c "import json; print \",\".join(json.load(open('${repair.json}','r'))[\"iplist\"])")
for ip in ${iplist[@]}
do
  sudo ssh -t root@$ip << EOF
    for ip in ${iplist[@]} 
    do
      echo Checking $ip for ongoing repairs
      ${cassandra_home}nodetool -h $ip tpstats | grep Repair#
      response=$?
      if [ $response -eq 0 ]; then
        repair_ongoing=true
        echo "Ongoing repair on $ip"
      fi
    done 
    if ! [ $repair_ongoing ]; then
      ## echo "Taking a snapshot."
      ## ${cassandra_home}bin/nodetool -h $ip snapshot
      echo "Starting repair on $ip"
      start=$(date +%s)
      ${cassandra_home}bin/nodetool -h $ip repair -pr -inc -local metadata
      sleep 3
      ${cassandra_home}bin/nodetool -h $ip cleanup metadata 
      end=$(date +%s)
      #echo "ks.tab,st,et,last run,status">>repair_status.csv
      echo "Repair and cleanup completed for metadata in $((end - start)) seconds"
    fi
    exit 0
  EOF
done           

我正在尝试通过 SMTP 服务器发送邮件。并设置/etc/mail.rc文件：

set bsdcompat
set smtp=smtps://smtp.gmail.com:465
set smtp-auth=login
set [email protected]
set smtp-auth-password=password
set ssl-verify=ignore
set nss-config-dir=/etc/pki/nssdb/

现在我可以发送邮件，但我收到如下错误：

Error in certificate: Peer's certificate issuer is not recognized.

我的 nssdb 中存在以下条目：

certutil -L -d /etc/pki/nssdb

Certificate Nickname Trust Attributes 
                     SSL,S/MIME,JAR/XPI

谁能建议我解决这个问题？我已经google了，但没有得到正确的解决方案。