我尝试使用新的 LXD 容器将我的 Mongo 安装从 14.04 迁移到 16.04。
我使用了下面的先前的配置文件。
mongod.cnf
# mongod.conf
# for documentation of all options, see:
# http://docs.mongodb.org/manual/reference/configuration-options/
# Where and how to store data.
storage:
dbPath: /home/manager/mongo/data
# engine:
# mmapv1:
# smallFiles: true
# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /home/manager/mongo/log/mongod.log
# network interfaces
net:
port: 27031
bindIp: 127.0.0.1
processManagement:
fork: true
setParameter:
enableLocalhostAuthBypass: false
security:
keyFile: /home/manager/mongo/mongodb-keyfile
#operationProfiling:
#replication:
# replSetName: rs1
#sharding:
## Enterprise-Only Options:
#auditLog:
#snmp:
这是我的启动服务：
[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
[Service]
User=manager
ExecStart=/usr/bin/mongod --quiet --config /home/manager/mongo/mongod.conf
[Install]
WantedBy=multi-user.target
这是我在日志文件中收到的错误：
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] MongoDB starting : pid=807 port=27031 dbpath=/home/manager/mongo/data 64-bit host=mongo-rep-01
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] db version v3.2.6
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] git version: 05552b562c7a0b3143a729aaa0838e558dc49b25
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.2g-fips 1 Mar 2016
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] allocator: tcmalloc
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] modules: none
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] build environment:
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] distmod: ubuntu1404
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] distarch: x86_64
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] target_arch: x86_64
2016-06-03T10:39:30.657+0000 I CONTROL [initandlisten] options: { config: "/home/manager/mongo/mongod.conf", net: { bindIp: "127.0.0.1", port: 27031 }, processManagement: { fork: true }, security: { keyFile: "/home/manager/mongo/mongodb-keyfile" }, setParameter: { e$
2016-06-03T10:39:30.688+0000 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=18G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idl$
2016-06-03T10:39:31.174+0000 I CONTROL [initandlisten]
2016-06-03T10:39:31.175+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2016-06-03T10:39:31.175+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2016-06-03T10:39:31.175+0000 I CONTROL [initandlisten]
2016-06-03T10:39:31.175+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2016-06-03T10:39:31.175+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2016-06-03T10:39:31.175+0000 I CONTROL [initandlisten]
2016-06-03T10:39:31.177+0000 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/home/manager/mongo/data/diagnostic.data'
2016-06-03T10:39:31.177+0000 I NETWORK [HostnameCanonicalizationWorker] Starting hostname canonicalization worker
2016-06-03T10:39:31.178+0000 I CONTROL [signalProcessingThread] got signal 15 (Terminated), will terminate after current cmd ends
2016-06-03T10:39:31.178+0000 I FTDC [signalProcessingThread] Shutting down full-time diagnostic data capture
2016-06-03T10:39:31.185+0000 I NETWORK [initandlisten] waiting for connections on port 27031
2016-06-03T10:39:31.185+0000 I CONTROL [signalProcessingThread] now exiting
2016-06-03T10:39:31.185+0000 I NETWORK [signalProcessingThread] shutdown: going to close listening sockets...
2016-06-03T10:39:31.185+0000 I NETWORK [signalProcessingThread] closing listening socket: 6
2016-06-03T10:39:31.185+0000 I NETWORK [signalProcessingThread] closing listening socket: 7
2016-06-03T10:39:31.186+0000 I NETWORK [signalProcessingThread] removing socket file: /tmp/mongodb-27031.sock
2016-06-03T10:39:31.186+0000 I NETWORK [signalProcessingThread] shutdown: going to flush diaglog...
2016-06-03T10:39:31.186+0000 I NETWORK [signalProcessingThread] shutdown: going to close sockets...
2016-06-03T10:39:31.186+0000 I STORAGE [signalProcessingThread] WiredTigerKVEngine shutting down
2016-06-03T10:39:32.336+0000 I STORAGE [signalProcessingThread] shutdown: removing fs lock...
2016-06-03T10:39:32.336+0000 I CONTROL [signalProcessingThread] dbexit: rc: 0
服务状态：
root@mongo-rep-01:/home/manager/mongo# sudo systemctl status mongodb
● mongodb.service - High-performance, schema-free document-oriented database
Loaded: loaded (/etc/systemd/system/mongodb.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Jun 03 10:17:17 mongo-rep-01 systemd[1]: Started High-performance, schema-free document-oriented database.
Jun 03 10:17:17 mongo-rep-01 mongod[643]: 2016-06-03T10:17:17.858+0000 W CONTROL [main] Option: storage.smallFiles is deprecated. Please use storage.mmapv1.smallFiles instead.
Jun 03 10:17:17 mongo-rep-01 mongod[643]: about to fork child process, waiting until server is ready for connections.
Jun 03 10:17:17 mongo-rep-01 mongod[643]: forked process: 645
Jun 03 10:18:26 mongo-rep-01 systemd[1]: Started High-performance, schema-free document-oriented database.
Jun 03 10:18:26 mongo-rep-01 mongod[672]: about to fork child process, waiting until server is ready for connections.
Jun 03 10:18:26 mongo-rep-01 mongod[672]: forked process: 674
Jun 03 10:39:30 mongo-rep-01 systemd[1]: Started High-performance, schema-free document-oriented database.
Jun 03 10:39:30 mongo-rep-01 mongod[805]: about to fork child process, waiting until server is ready for connections.
Jun 03 10:39:30 mongo-rep-01 mongod[805]: forked process: 807
答案1
根据我在这里找到的信息：
看来 systemd 是日志文件中指示的“sig 15”终止的根源。
可以在服务定义中通过指明该进程是分叉类型来修复此问题：
[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
[Service]
Type=forking
User=manager
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf
[Install]
WantedBy=multi-user.target
或者尝试更改 mongo.conf 文件中的 processManagement 值：
processManagement:
fork: false