当我收到此错误时,我应该如何设置新的Cassandra节点？
INFO [SSTableBatchOpen:1] 2014-02-25 01:51:17,132 SSTableReader.java (line 223) Opening /var/lib/cassandra/data/system/local/system-local-jb-5 (5725 bytes)
ERROR [main] 2014-02-25 01:51:17,377 CassandraDaemon.java (line 237) Fatal exception during initialization
org.apache.cassandra.exceptions.ConfigurationException: Saved cluster name Test Cluster != configured name thisisstupid
at org.apache.cassandra.db.SystemKeyspace.checkHealth(SystemKeyspace.java:542)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:233)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:462)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:552)
cassandra.yaml文件中的集群名称是:
cluster_name: 'thisisstupid'
我该如何解决？
下面是redis的新手脚本.如何创建一个pid所以我使用monit进行监控？
#!upstart
description "Redis Server"
env USER=redis
start on startup
stop on shutdown
respawn
exec sudo -u $USER sh -c "/usr/local/bin/redis-server /etc/redis/redis.conf 2>&1 >> /var/log/redis/redis.log"
我有一份清单,例如[['a','b'],['c','d']].
我有一个称为表T和两个字段F1,F2.字段列表中的第一项映射到F1,第二项F2.
如何在单个命令或调用中为每个内部列表插入行,而不是像这样使用for循环？
for i in [['a','b'],['c','d']]:
c.execute("insert into T (F1,F2) values (%s, %s)", (i[0], i[1]))
我使用下面的方法将pandas df转换为r:
import pandas as pd
import pandas.rpy.common as com
import rpy2.robjects as ro
from rpy2.robjects.packages import importr
rdf = com.convert_to_r_dataframe(df)
如何将rdf转换回pandas df？
df = f(rdf) ?
如何摆脱nginx中的所有以下错误.我没有favicon.ico
2012/03/11 17:13:25 [error] 959#0: *116 open() "/usr/local/nginx/html/favicon.ico" failed (2: No such file or directory), client: 111.68.59.75, server: 127.0.0.1, request: "GET /favicon.ico HTTP/1.1"
我想在nginx conf中有一些线？
我收到以下错误.我如何解决？:git add.git commit -m't'git push origin development
To git@github.com:myrepo.git
! [rejected] development -> development (non-fast-forward)
error: failed to push some refs to 'git@github.com:myrepo.git'
To prevent you from losing history, non-fast-forward updates were rejected
Merge the remote changes (e.g. 'git pull') before pushing again. See the
'Note about fast-forwards' section of 'git push --help' for details.
我正在使用默认字典.我需要pprint.
然而,当我pprint......这就是它的样子.
defaultdict(<functools.partial object at 0x1f68418>, {u'300:250': defaultdict(<functools.partial object at 0x1f683c0>, {0: defaultdict(<type 'list'>, {u'agid1430864021': {u'status': u'0', u'exclude_regi..........
如何pprint使用默认字典？
让表达知道我所处的环境最简单的方法是什么？例如,我想做以下操作,根据我所使用的环境建立与redis的连接.可以通过命令行完成吗？
app.configure('development', function(){
app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
var r = require("redis").createClient(6379,'127.0.0.1');
});
app.configure('production', function(){
app.use(express.errorHandler());
r = redis.createClient(6379,'46.137.195.230', { detect_buffers: true });
});
development-environment production-environment node.js express
我试图ab测试旋风.
我跑的时候
ab -n 2000 -c 25 http://127.0.0.1
我得到ab:无效的网址.
嗯......当我在我的开发机器上去ff时,网站就在那里.
这是我的nginx配置
http {
upstream frontends {
server 127.0.0.1:8051;
}
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 30;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Only retry if there was a communication error, not a timeout
# on the Tornado server (to avoid propagating "queries of death"
# to all frontends)
proxy_next_upstream error;
server {
listen 80; …我正在尝试使用厨师聚集兔子
这是我的错误.我关闭了第二个节点上的所有兔子.
rabbitmqctl join_cluster --ram rabbit@ip-10-158-xxx-xxx
Error: mnesia_unexpectedly_running
那么......交易是什么？我从http://agiletesting.blogspot.com/2010/05/rabbitmq-clustering-in-ubuntu.html尝试了这个,这是删除/ var/lib/rabbitmq/mnesia.不行.在什么服务器上运行它不会运行？所有？
谢谢