【问题求教】双服务器双IP该怎么配置最好？
两台服务器里有一台相对差点的，都是在一个机房，百M共享在线1千2不到就很容易访问不了，郁闷~
请高手不吝指点！！:( 没看明白 你这样提问大家没法回答您。具体把你的情况介绍以下。如软硬件培植，服务内容具体的系统负载提示等等贴出来。 配置
服务器 1 双cpu 4G内存
服务器2 单cpu 2G内存
都是xero内存，系统是redhat AS3
现在问题这样，如果做2台服务器之间的web集群效率更高，有没有好的方案 你可以做个dns负载均衡，比较简单效果也不错。
[url]www.yourname.com[/url] in cname realserver.youname.com
reaserver.youname.com in a ip1
reaserver.youname.com in A ip2
服务器要求服务的内容一致即可。
如果要做lvs 均衡，[url]http://www.linuxvirtualserver.org/whatis.html[/url]。
其他方案：[url]http://www.csm.ornl.gov/pvm/pvm_home.html[/url]
[url]http://www-unix.mcs.anl.gov/mpi/mpich/docs/faq.htm[/url] dns好像不是我做的吧？？需要域名转发做的？
lvs最少机器需要3台，一台做load balance，我只有2台
[[i] Last edited by 大灰杨 on 2005-4-25 at 15:46 [/i]] 做个APACHE集群 怎么做apache集群？？ 这样的机器论坛在线1千2就访问不了啦？日哦！基本上不可能的
[[i] Last edited by crazy on 2005-4-25 at 19:20 [/i]] 采用的是vbb论坛，发现数据库服务器负载太高，cpu经常到满 [quote]Originally posted by [i]大灰杨[/i] at 2005-4-25 19:22
采用的是vbb论坛，发现数据库服务器负载太高，cpu经常到满 [/quote]
我用Discuz2.5，Dual Xeon2.4的机器，2G内存，几K在线丝毫不会有任何影响，就算装满插件然后上G级数据库，估计三四K在线还是没问题！ [quote]Originally posted by [i]crazy[/i] at 2005-4-25 20:03
我用Discuz2.5，Dual Xeon2.4的机器，2G内存，几K在线丝毫不会有任何影响，就算装满插件然后上G级数据库，估计三四K在线还是没问题！ [/quote]
:o 商业版？
TMD,今天晚上六七百人就掉 :(
[[i] Last edited by 大灰杨 on 2005-4-25 at 20:18 [/i]] [quote]Originally posted by [i]大灰杨[/i] at 2005-4-25 20:15
:o 商业版？
TMD,今天晚上六七百人就掉 :( [/quote]
无论商业版或者免费版，在Dual Xeon2.4的机器上，支持2K以上在线不成问题的 你的机器恐怕是mysql设置问题导致的，以前见过很多人都这样，一有问题就升级硬件，纯浪费！ mysql设置是这样的 /etc/my.cnf
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
skip-innodb
max_connections = 800
key_buffer = 64M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
table_cache = 2048
thread_cache_size = 128
wait_timeout = 1800
connect_timeout = 10
max_allowed_packet = 64M
max_connect_errors = 800
query_cache_limit = 1M
query_cache_size = 32M
query_cache_type = 1
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 4 把这个去掉看看，Linux下默认就是多线程的，不用这样设置！
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 4
另外可以参考一下我用过的my.cnf，这个是基于Dual Xeon2.4 ＋2G内存配置的，mysql版本4.0.22，你可以适当修改一下。
[code]# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /usr/local/mysql/data) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
set-variable = key_buffer=512M
set-variable = max_allowed_packet=4M
set-variable = table_cache=1024
set-variable = thread_cache=64
set-variable = join_buffer_size=32M
set-variable = sort_buffer=32M
set-variable = record_buffer=32M
set-variable = max_connections=512
set-variable = wait_timeout=120
set-variable = interactive_timeout=120
set-variable = max_connect_errors=30000
set-variable = long_query_time=1
set-variable = max_heap_table_size=256M
set-variable = tmp_table_size=128M
set-variable = thread_concurrency=8
set-variable = myisam_sort_buffer_size=128M
port = 3306
socket = /tmp/mysql.sock
max_connections = 1000
skip-locking
key_buffer = 128M
max_allowed_packet = 4M
table_cache = 1024
sort_buffer_size = 8192K
net_buffer_length = 32K
myisam_sort_buffer_size = 32M
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Replication Master Server (default)
# binary logging is required for replication
log-bin
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin
# Point the following paths to different dedicated disks
#tmpdir = /tmp/
#log-update = /path-to-dedicated-directory/hostname
# Uncomment the following if you are using BDB tables
#bdb_cache_size = 4M
#bdb_max_lock = 10000
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /usr/local/mysql/data/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/mysql/data/
#innodb_log_arch_dir = /usr/local/mysql/data/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 32M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 40M
sort_buffer_size = 40M
read_buffer = 4M
write_buffer = 4M
[myisamchk]
key_buffer = 40M
sort_buffer_size = 40M
read_buffer = 4M
write_buffer = 4M
[mysqlhotcopy]
interactive-timeout[/code] 大家都是高手，我就不发表意见了 crazy
你用discez，那么你的httpd.conf是怎么配置的？
maxclients server limit和perchildren数目个是多少？ [quote]Originally posted by [i]大灰杨[/i] at 2005-4-27 00:54
crazy
你用discez，那么你的httpd.conf是怎么配置的？
maxclients server limit和perchildren数目个是多少？ [/quote]
按照你的访问量，这两个值直接使用默认的就非常好的了，而且很稳定。 看来是论坛不同，用vbb的话，mysql并发过了200多就不行了
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