2

when using ./bin/cassandra -f, it shows:

Cz@z-EX465-MX:~/cassandra$ ./bin/cassandra -f
 INFO 09:12:19,460 Logging initialized
 INFO 09:12:19,484 Heap size: 1033895936/1033895936
 INFO 09:12:19,486 JNA not found. Native methods will be disabled.
 INFO 09:12:19,501 Loading settings from file:/home/z/cassandra/conf/cassandra.yaml
 INFO 09:12:19,711 DiskAccessMode 'auto' determined to be standard, indexAccessMode is standard
 INFO 09:12:19,829 Creating new commitlog segment /var/lib/cassandra/commitlog/CommitLog-1297127539829.log
 INFO 09:12:19,888 Deleted /var/lib/cassandra/data/system/LocationInfo-f-12
 INFO 09:12:19,889 Deleted /var/lib/cassandra/data/system/LocationInfo-f-9
 INFO 09:12:19,890 Deleted /var/lib/cassandra/data/system/LocationInfo-f-11
 INFO 09:12:19,891 Deleted /var/lib/cassandra/data/system/LocationInfo-f-10
 INFO 09:12:19,939 reading saved cache /var/lib/cassandra/saved_caches/system-IndexInfo-KeyCache
 INFO 09:12:19,946 reading saved cache /var/lib/cassandra/saved_caches/system-Schema-KeyCache
 INFO 09:12:19,949 reading saved cache /var/lib/cassandra/saved_caches/system-Migrations-KeyCache
 INFO 09:12:19,952 reading saved cache /var/lib/cassandra/saved_caches/system-LocationInfo-KeyCache
 INFO 09:12:19,962 Opening /var/lib/cassandra/data/system/LocationInfo-f-13
 INFO 09:12:19,984 reading saved cache /var/lib/cassandra/saved_caches/system-HintsColumnFamily-KeyCache
 INFO 09:12:20,043 Couldn't detect any schema definitions in local storage.
 INFO 09:12:20,045 Found table data in data directories. Consider using JMX to call org.apache.cassandra.service.StorageService.loadSchemaFromYaml().
 INFO 09:12:20,058 Replaying /var/lib/cassandra/commitlog/CommitLog-1297127304757.log
 INFO 09:12:20,060 Finished reading /var/lib/cassandra/commitlog/CommitLog-1297127304757.log
 INFO 09:12:20,061 Log replay complete
 INFO 09:12:20,147 Cassandra version: 0.7.1-SNAPSHOT
 INFO 09:12:20,147 Thrift API version: 19.4.0
 INFO 09:12:20,168 Loading persisted ring state
 INFO 09:12:20,175 Starting up server gossip
 INFO 09:12:20,195 switching in a fresh Memtable for LocationInfo at CommitLogContext(file='/var/lib/cassandra/commitlog/CommitLog-1297127539829.log', position=89)
 INFO 09:12:20,197 Enqueuing flush of Memtable-LocationInfo@14850080(29 bytes, 1 operations)
 INFO 09:12:20,199 Writing Memtable-LocationInfo@14850080(29 bytes, 1 operations)
 INFO 09:12:20,604 Completed flushing /var/lib/cassandra/data/system/LocationInfo-f-14-Data.db (80 bytes)
 INFO 09:12:20,623 Starting Messaging Service on port 7000
 INFO 09:12:20,669 Using saved token 66456586001264063553489133185713650713
 INFO 09:12:20,670 switching in a fresh Memtable for LocationInfo at CommitLogContext(file='/var/lib/cassandra/commitlog/CommitLog-1297127539829.log', position=270)
 INFO 09:12:20,671 Enqueuing flush of Memtable-LocationInfo@5006112(53 bytes, 2 operations)
 INFO 09:12:20,671 Writing Memtable-LocationInfo@5006112(53 bytes, 2 operations)
 INFO 09:12:20,938 Completed flushing /var/lib/cassandra/data/system/LocationInfo-f-15-Data.db (163 bytes)
 INFO 09:12:20,945 Will not load MX4J, mx4j-tools.jar is not in the classpath
 INFO 09:12:21,008 Binding thrift service to localhost/127.0.0.1:9160
 INFO 09:12:21,013 Using TFastFramedTransport with a max frame size of 15728640 bytes.
 INFO 09:12:21,016 Listening for thrift clients...

so when browse 127.0.0.1:9160, it shows blank white page. but I cannot use this terminal window except pressing Ctrl+c and stop cassandra.

I'm looking if I can use ./bin/cassandra -f & to have back the terminal window, but when trying pgrep thrift or pgrep cassandra, I found nothing. I dont know how to stop it when using other terminal window

4

6 回答 6

11

-f 用于前台。如果您希望 Cassandra 守护进程，请忽略它。

于 2011-02-08T05:09:47.507 回答
3

解决了。用于pgrep java查看过程

于 2011-02-08T01:37:39.757 回答
2

在 *nix 系统上，您应该能够键入 ctrl-z 来停止前台 cassandra 进程。这会给你一个提示，如果你在提示符下键入 bg，cassandra 进程将在后台运行。您可以使用任何需要后台处理的前台进程来执行此操作。

于 2011-02-16T04:09:57.793 回答
1

利用

./cassandra -f pid.txt

您的进程将自动在后台运行并将进程 ID 推送到文件中。将有助于使用 pid.txt 中的进程 ID 停止 cassandra 进程。

于 2014-04-03T01:40:34.593 回答
1

如果您确实使用了-f和&的组合，那么您的工作就在后台。

你可以输入：

fg

将其带回前台，然后按 CTRL-C

或使用：

jobs

看看你在后台有什么。然后您可以将 fg 与作业编号一起使用。

您还可以使用 CTRL-Z 暂停终端上当前正在运行的任何内容，然后使用：

bg

给它做背景。

这是一个示例会话，我在其中运行了两次tail并演示了将其打开和关闭终端

rob@deathstar:~$ tail -f /var/log/messages &
[1] 13074                                            <-- that's the PID :) 
rob@deathstar:~$ tail -f /var/log/daemon.log &
[2] 13089
rob@deathstar:~$ jobs
[1]-  Running                 tail -f /var/log/messages &
[2]+  Running                 tail -f /var/log/daemon.log &
rob@deathstar:~$ fg 1
tail -f /var/log/messages
^Z
[1]+  Stopped                 tail -f /var/log/messages
rob@deathstar:~$ bg
[1]+ tail -f /var/log/messages &
rob@deathstar:~$ jobs
[1]-  Running                 tail -f /var/log/messages &
[2]+  Running                 tail -f /var/log/daemon.log &
rob@deathstar:~$ fg 2
tail -f /var/log/daemon.log
^Z
[2]+  Stopped                 tail -f /var/log/daemon.log
rob@deathstar:~$ bg
[2]+ tail -f /var/log/daemon.log &
rob@deathstar:~$ jobs
[1]-  Running                 tail -f /var/log/messages &
[2]+  Running                 tail -f /var/log/daemon.log &
rob@deathstar:~$
于 2013-02-28T17:19:49.830 回答
0

在 Windows 的情况下......您需要再次重新启动集群，因为一旦服务在前台运行，则需要重新启动集群

于 2015-09-23T06:03:10.687 回答