Merhaba,
httpd.conf dosyasını eski haline alıp mysql değişikliklerini yaptım fakat aynı gün içinde tekrar kapanmalar olunca log dosyasını incelediğimde yine max client error verdiğini gördüm.
Bunun üzerine httpd.conf dosyasını

Timeout 20
<IfModule prefork.c>
    StartServers 10
    MinSpareServers 30
    MaxSpareServers 50
    ServerLimit 256
    MaxClients 200
    MaxRequestsPerChild 1000
</IfModule>

şeklinde ayarladım.
My.cnf dosyasını httpd.conf dosyasını test edebilmek için pek değiştirmedim sadece şu bi kaç satırı ekledim;

[mysqld]
set-variable = max_connections=500
safe-show-database
table_cache = 340
query_cache_size = 8M
thread_cache_size = 4

İki gündür kapanmadı neyseki. Load değerleri 1-2 civarında geziniyor en yoğun zamanlarda. Max client error hatasıda artık yok.
Yeni mysql raporu şu şekilde;

Server has been running for over 48hrs.
It should be safe to follow these recommendations
To find out more information on how each of these
runtime variables effects performance visit:
http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html
Visit http://www.mysql.com/products/enterprise/advisors.html
for info about MySQL's Enterprise Monitoring and Advisory Service
SLOW QUERIES
The slow query log is NOT enabled.
Current long_query_time = 10 sec.
You have 1 out of 13390150 that take longer than 10 sec. to complete
Your long_query_time may be too high, I typically set this under 5 sec.
BINARY UPDATE LOG
The binary update log is NOT enabled.
You will not be able to do point in time recovery
See http://dev.mysql.com/doc/refman/5.0/en/point-in-time-recovery.html
WORKER THREADS
Current thread_cache_size = 4
Current threads_cached = 3
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine
MAX CONNECTIONS
Current max_connections = 500
Current threads_connected = 1
Historic max_used_connections = 34
The number of used connections is 6% of the configured maximum.
You are using less than 10% of your configured max_connections.
Lowering max_connections could help to avoid an over-allocation of memory
See "MEMORY USAGE" section to make sure you are not over-allocating
MEMORY USAGE
Max Memory Ever Allocated : 117 M
Configured Max Per-thread Buffers : 1 G
Configured Max Global Buffers : 25 M
Configured Max Memory Limit : 1 G
Physical Memory : 1.97 G
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 17 M
Current key_buffer_size = 7 M
Key cache miss rate is 1 : 8664
Key buffer fill ratio = 62.00 %
Your key_buffer_size seems to be fine
QUERY CACHE
Query cache is enabled
Current query_cache_size = 8 M
Current query_cache_used = 4 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 53.89 %
Current query_cache_min_res_unit = 4 K
MySQL won't cache query results that are larger than query_cache_limit in size
SORT OPERATIONS
Current sort_buffer_size = 2 M
Current read_rnd_buffer_size = 256 K
Sort buffer seems to be fine
JOINS
Current join_buffer_size = 132.00 K
You have had 170 queries where a join could not use an index properly
You have had 1 joins without keys that check for key usage after each row
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.
Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.
OPEN FILES LIMIT
Current open_files_limit = 2500 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine
TABLE CACHE
Current table_cache value = 340 tables
You have a total of 326 tables
You have 340 open tables.
Current table_cache hit rate is 21%, while 100% of your table cache is in use
You should probably increase your table_cache
TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 1541315 temp tables, 20% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Created disk tmp tables ratio seems fine
TABLE SCANS
Current read_buffer_size = 128 K
Current table scan ratio = 1204 : 1
read_buffer_size seems to be fine
TABLE LOCKING
Current Lock Wait ratio = 1 : 96
You may benefit from selective use of InnoDB.
If you have long running SELECT's against MyISAM tables and perform
frequent updates consider setting 'low_priority_updates=1'
If you have a high concurrency of inserts on Dynamic row-length tables
consider setting 'concurrent_insert=2'.