该脚本主要用于大致诊断MYSQL主机和数据库配置及性能收集,脚本部分功能展示如下:
郑州不孕不育医院:http://mobile.03913882333.com/
郑州输卵管造影费用是多少:http://jbk.39.net/yiyuanfengcai/tsyl_zztjyy/3025/
实现该上述展示功能的shell脚本如下:
file_output="os_mysql_summary.html"
td_str=""
th_str=""
myuser="root"
mypasswd="password"
myip="192.168.11.101"
myport="3307"
mysql_cmd="mysql -u${myuser} -p${mypasswd} -h${myip} -P${myport} --protocol=tcp --silent"
create_html_css(){
echo -e "
"
}
create_html_head(){
echo -e ""
}
create_table_head1(){
echo -e "" border="1" bordercolor="#000000" cellspacing="0px" style="border-collapse:collapse">"
}
create_table_head2(){
echo -e "" border="1" bordercolor="#000000" cellspacing="0px" style="border-collapse:collapse">"
}
create_td(){
td_str=`echo $1 | awk "BEGIN{FS="|"}""{i=1; while(i<=NF) {print ""$i" ";i++}}"`
}
create_th(){
th_str=`echo $1|awk "BEGIN{FS="|"}""{i=1; while(i<=NF) {print ""$i" ";i++}}"`
}
create_tr1(){
create_td "$1"
echo -e "
$td_str
" >> $file_output
}
create_tr2(){
create_th "$1"
echo -e "
$th_str
" >> $file_output
}
create_tr3(){
echo -e "
`cat $1`
" >> $file_output
}
create_table_end(){
echo -e "
"
}
create_html_end(){
echo -e ""
}
NAME_VAL_LEN=12
name_val () {
printf "%+*s | %s
" "${NAME_VAL_LEN}" "$1" "$2"
}
get_virtual () {
local file="/var/log/dmesg"
if grep -qi -e "vmware" -e "vmxnet" -e "paravirtualized kernel on vmi" "${file}"; then
echo "VMWare";
elif grep -qi -e "paravirtualized kernel on xen" -e "Xen virtual console" "${file}"; then
echo "Xen";
elif grep -qi "qemu" "${file}"; then
echo "QEmu";
elif grep -qi "paravirtualized kernel on KVM" "${file}"; then
echo "KVM";
elif grep -q "VBOX" "${file}"; then
echo "VirtualBox";
elif grep -qi "hd.: Virtual .., ATA.*drive" "${file}"; then
echo "Microsoft VirtualPC";
else
echo "Physical Machine"
fi
}
get_physics(){
name_val "Date" "`date -u +"%F %T UTC"` (local TZ: `date +"%Z %z"`)"
name_val "Hostname" "`uname -n`"
name_val "Uptime" "`uptime`"
name_val "System" "`dmidecode -s "system-manufacturer" "system-product-name" "system-version" "chassis-type"`"
name_val "Service_num" "`dmidecode -s "system-serial-number"`"
name_val "Platform" "`uname -s`"
name_val "Release" "`cat /etc/{oracle,redhat,SuSE,centos}-release 2>/dev/null|sort -ru|head -n1`"
name_val "Kernel" "`uname -r`"
name_val "Architecture" "CPU=`lscpu|grep Architecture|awk -F: "{print $2}"|sed "s/^[[:space:]]*//g"`;OS=`getconf LONG_BIT`-bit"
name_val "Threading" "`getconf GNU_LIBPTHREAD_VERSION`"
name_val "SELinux" "`getenforce`"
name_val "Virtualized" "`get_virtual`"
}
get_cpuinfo () {
file="/proc/cpuinfo"
virtual=`grep -c ^processor "${file}"`
physical=`grep "physical id" "${file}" | sort -u | wc -l`
cores=`grep "cpu cores" "${file}" | head -n 1 | cut -d: -f2`
model=`grep "model name" "${file}"|sort -u|awk -F: "{print $2}"`
speed=`grep -i "cpu MHz" "${file}"|sort -u|awk -F: "{print $2}"`
cache=`grep -i "cache size" "${file}"|sort -u|awk -F: "{print $2}"`
SysCPUIdle=`vmstat | sed -n "$ p" | awk "{print $15}"`
[ "${physical}" = "0" ] && physical="${virtual}"
[ -z "${cores}" ] && cores=0
cores=$((${cores} * ${physical}));
htt=""
if [ ${cores} -gt 0 -a $cores -lt $virtual ]; then htt=yes; else htt=no; fi
name_val "Processors" "physical = ${physical}, cores = ${cores}, virtual = ${virtual}, hyperthreading = ${htt}"
name_val "Models" "${physical}*${model}"
name_val "Speeds" "${virtual}*${speed}"
name_val "Caches" "${virtual}*${cache}"
name_val "CPUIdle(%)" "${SysCPUIdle}%"
}
get_meminfo(){
echo "Locator |Size |Speed |Form Factor | Type | Type Detail" >>/tmp/tmpmem3_h1_`date +%y%m%d`.txt
dmidecode| grep -v "Memory Device Mapped Address"|grep -A12 -w "Memory Device"
|egrep "Locator:|Size:|Speed:|Form Factor:|Type:|Type Detail:"
|awk -F: "/Size|Type|Form.Factor|Type.Detail|^[ ]+Locator/{printf("|%s", $2)}/^[ ]+Speed/{print "|" $2}"
|grep -v "No Module Installed"
|awk -F"|" "{print $4,"|", $2,"|", $7,"|", $3,"|", $5,"|", $6}" >>/tmp/tmpmem3_t1_`date +%y%m%d`.txt
free -glht >>/tmp/tmpmem2_`date +%y%m%d`.txt
memtotal=`vmstat -s | head -1 | awk "{print $1}"`
avm=`vmstat -s| sed -n "3p" | awk "{print $1}"`
name_val "Mem_used_rate(%)" "`echo "100*${avm}/${memtotal}" | bc`%" >>/tmp/tmpmem1_`date +%y%m%d`.txt
}
get_diskinfo(){
echo "Filesystem |Type |Size | Used | Avail | Use% | Mounted on | Opts" >>/tmp/tmpdisk_h1_`date +%y%m%d`.txt
df -ThP|grep -v tmpfs|sed "1d"|sort >/tmp/tmpdf1_`date +%y%m%d`.txt
mount -l|awk "{print $1,$6}"|grep ^/|sort >/tmp/tmpdf2_`date +%y%m%d`.txt
join /tmp/tmpdf1_`date +%y%m%d`.txt /tmp/tmpdf2_`date +%y%m%d`.txt
|awk "{print $1,"|", $2,"|", $3,"|", $4,"|", $5,"|", $6,"|", $7,"|", $8}" >>/tmp/tmpdisk_t1_`date +%y%m%d`.txt
lsblk >>/tmp/tmpdisk1_`date +%y%m%d`.txt
for disk in `ls -l /sys/block|awk "{print $9}"|sed "/^$/d"|grep -v fd`
do
echo "${disk}" `cat /sys/block/${disk}/queue/scheduler` >>/tmp/tmpdisk2_`date +%y%m%d`.txt
done
pvs >>/tmp/tmpdisk3_`date +%y%m%d`.txt
echo "====================== ===== ===== ===== ===== ===== ========== =======" >>/tmp/tmpdisk3_`date +%y%m%d`.txt
vgs >>/tmp/tmpdisk3_`date +%y%m%d`.txt
echo "====================== ===== ===== ===== ===== ===== ========== =======" >>/tmp/tmpdisk3_`date +%y%m%d`.txt
lvs >>/tmp/tmpdisk3_`date +%y%m%d`.txt
}
get_netinfo(){
echo "interface | status | ipadds | mtu | Speed | Duplex" >>/tmp/tmpnet_h1_`date +%y%m%d`.txt
for ipstr in `ifconfig -a|grep ": flags"|awk "{print $1}"|sed "s/.$//"`
do
ipadds=`ifconfig ${ipstr}|grep -w inet|awk "{print $2}"`
mtu=`ifconfig ${ipstr}|grep mtu|awk "{print $NF}"`
speed=`ethtool ${ipstr}|grep Speed|awk -F: "{print $2}"`
duplex=`ethtool ${ipstr}|grep Duplex|awk -F: "{print $2}"`
echo "${ipstr}" "up" "${ipadds}" "${mtu}" "${speed}" "${duplex}"
|awk "{print $1,"|", $2,"|", $3,"|", $4,"|", $5,"|", $6}" >>/tmp/tmpnet1_`date +%y%m%d`.txt
done
}
get_topproc(){
#os load
echo "os load 1" >>/tmp/tmpload_`date +%y%m%d`.txt
sar -q 1 5 >>/tmp/tmpload_`date +%y%m%d`.txt
echo "os load 2" >>/tmp/tmpload_`date +%y%m%d`.txt
sar -b 1 5 >>/tmp/tmpload_`date +%y%m%d`.txt
echo "os load 3" >>/tmp/tmpload_`date +%y%m%d`.txt
vmstat 1 5 >>/tmp/tmpload_`date +%y%m%d`.txt
#top cpu
mpstat 1 5 >>/tmp/tmptopcpu_`date +%y%m%d`.txt
echo "TOP10 CPU Resource Process" >>/tmp/tmptopcpu_`date +%y%m%d`.txt
ps aux|head -1 >>/tmp/tmptopcpu_`date +%y%m%d`.txt
ps aux|grep -v PID|sort -rn -k +3|head >>/tmp/tmptopcpu_`date +%y%m%d`.txt
#top -bn1 -o "%CPU"|sed -n "/PID/,17p"
#top mem
echo "TOP10 MEM Resource Process" >>/tmp/tmptopmem_`date +%y%m%d`.txt
ps aux|head -1 >>/tmp/tmptopmem_`date +%y%m%d`.txt
ps aux|grep -v PID|sort -rn -k +4|head >>/tmp/tmptopmem_`date +%y%m%d`.txt
#top -bn1 -o "%MEM"|sed -n "/PID/,17p"
#top i/o
iostat -cdmx 2 3 >>/tmp/tmptopio_`date +%y%m%d`.txt
#iotop -botq -n 3 -d 2
}
my_base_info(){
${mysql_cmd} -e "select now(),current_user(),version()G"
${mysql_cmd} -e "show global variables like "autocommit";"|grep -i ^auto|awk "{print $1,":",$2}"
${mysql_cmd} -e "show global variables"|egrep -w "port|character_set_server|datadir|log_error|log_bin_basename|tx_isolation|binlog_format"|awk "{print $1,":",$2}"
}
my_stat_info(){
${mysql_cmd} -e status >>/tmp/tmpmy_stat_`date +%y%m%d`.txt
}
my_connip_info(){
echo "ipadds|conn_status|count" >>/tmp/tmpmy_connip_h1_`date +%y%m%d`.txt
netstat -an|grep ${myport}|grep -vi LISTEN|awk "{print $5,$6}"|sed "s/::ffff://g"|sed "s/:[0-9]*//g"|sed "1d"|sort|uniq -c|awk "{print $2,"|",$3,"|",$1}" >>/tmp/tmpmy_connip_t1_`date +%y%m%d`.txt
}
my_param_info(){
echo "Variable_name|Value" >>/tmp/tmpmy_param_h1_`date +%y%m%d`.txt
${mysql_cmd} -e "show global variables"|egrep -w "innodb_buffer_pool_size|innodb_file_per_table|innodb_flush_log_at_trx_commit|innodb_io_capacity|
innodb_lock_wait_timeout|innodb_data_home_dir|innodb_log_file_size|innodb_log_files_in_group|log_slave_updates|long_query_time|lower_case_table_names|
max_connections|max_connect_errors|max_user_connections|query_cache_size|query_cache_type |server_id|slow_query_log|slow_query_log_file|innodb_temp_data_file_path|
sql_mode|gtid_mode|enforce_gtid_consistency|expire_logs_days|sync_binlog|open_files_limit|myisam_sort_buffer_size|myisam_max_sort_file_size"
|awk "{print $1,"|",$2}" >>/tmp/tmpmy_param_t1_`date +%y%m%d`.txt
}
my_segm1_info(){
${mysql_cmd} -H -e "select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024/1024,2)," GB") as data_size,
concat(truncate(sum(index_length)/1024/1024/1024,2),"GB") as index_size
from information_schema.tables group by TABLE_SCHEMA order by data_length desc;"
}
my_segm2_info(){
${mysql_cmd} -H -e "select table_schema,table_name,table_rows,concat(truncate(data_length/1024/1024/1024,2)," GB") as data_size,
concat(truncate(index_length/1024/1024/1024,2)," GB") as index_size from information_schema.tables order by data_length desc limit 10;"
}
my_segm3_info(){
${mysql_cmd} -H -e "select table_name,table_rows,concat(round(data_length/1024/1024, 2), "MB") as size,data_free
from information_schema.tables where data_free>0 order by data_length desc;"
}
my_obj1_info(){
${mysql_cmd} -H -e "select table_schema as db,table_type as object_type,count(*) as cnt from information_schema.tables group by table_schema,table_type union all
select routine_schema as db,routine_type as object_type,count(*) as cnt from information_schema.routines group by routine_schema,routine_type;"
}
my_obj2_info(){
${mysql_cmd} -H -e "select table_schema,engine,count(*) as cnt from information_schema.tables group by table_schema,engine;"
}
my_obj3_info(){
${mysql_cmd} -H -e "select table_schema,table_name from information_schema.tables where table_schema not in ("mysql","information_schema","performance_schema","sys") and table_name not in (
select table_name from information_schema.table_constraints t join information_schema.key_column_usage k using (
constraint_name,table_schema,table_name) where t.constraint_type = "PRIMARY KEY" and table_schema not in ("mysql","information_schema","performance_schema","sys"));"
}
my_lock_info(){
${mysql_cmd} -H -e "SELECT r.trx_id waiting_trx_id, r.trx_mysql_thread_id waiting_thread, r.trx_query waiting_query,
b.trx_id blocking_trx_id, b.trx_mysql_thread_id blocking_thread, b.trx_query blocking_query,
bl.lock_id blocking_lock_id, bl.lock_mode blocking_lock_mode, bl.lock_type blocking_lock_type,
bl.lock_table blocking_lock_table, bl.lock_index blocking_lock_index,
rl.lock_id waiting_lock_id, rl.lock_mode waiting_lock_mode, rl.lock_type waiting_lock_type,
rl.lock_table waiting_lock_table, rl.lock_index waiting_lock_index
FROM information_schema.INNODB_LOCK_WAITS w
INNER JOIN information_schema.INNODB_TRX b ON b.trx_id = w.blocking_trx_id
INNER JOIN information_schema.INNODB_TRX r ON r.trx_id = w.requesting_trx_id
INNER JOIN information_schema.INNODB_LOCKS bl ON bl.lock_id = w.blocking_lock_id
INNER JOIN information_schema.INNODB_LOCKS rl ON rl.lock_id = w.requested_lock_idG"
}
my_innodb_info(){
${mysql_cmd} -e "show engine innodb statusG"
}
my_user_info(){
${mysql_cmd} -e "SELECT DISTINCT CONCAT("show grants for """,user,"""@""",host,""";") AS query FROM mysql.user;" >>/tmp/tmpmy_user_t_`date +%y%m%d`.txt
while read line
do
echo "=================================================================" >>/tmp/tmpmy_user_`date +%y%m%d`.txt
echo "$line" >>/tmp/tmpmy_user_`date +%y%m%d`.txt
${mysql_cmd} -e "$line" >>/tmp/tmpmy_user_`date +%y%m%d`.txt
done </tmp/tmpmy_user_t_`date +%y%m%d`.txt
}
create_html(){
rm -rf $file_output
touch $file_output
create_html_css >> $file_output
create_html_head "OS Basic Summary" >> $file_output
create_table_head1 >> $file_output
get_physics >>/tmp/tmpos_summ_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmpos_summ_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "CPU Info Summary" >> $file_output
create_table_head1 >> $file_output
get_cpuinfo >>/tmp/tmp_cpuinfo_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmp_cpuinfo_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "MEM Info Summary" >> $file_output
create_table_head1 >> $file_output
get_meminfo
while read line
do
create_tr1 "$line"
done < /tmp/tmpmem1_`date +%y%m%d`.txt
create_table_end >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmpmem2_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_table_head1 >> $file_output
while read line
do
create_tr2 "$line"
done < /tmp/tmpmem3_h1_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmpmem3_t1_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "Disk Info Summary" >> $file_output
create_table_head1 >> $file_output
get_diskinfo
while read line
do
create_tr2 "$line"
done < /tmp/tmpdisk_h1_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmpdisk_t1_`date +%y%m%d`.txt
create_table_end >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmpdisk1_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmpdisk2_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmpdisk3_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "Network Info Summary" >> $file_output
create_table_head1 >> $file_output
get_netinfo
while read line
do
create_tr2 "$line"
done < /tmp/tmpnet_h1_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmpnet1_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "OS Load Summary" >> $file_output
create_table_head1 >> $file_output
get_topproc
create_tr3 "/tmp/tmpload_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "TOP CPU Summary" >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmptopcpu_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "TOP MEM Summary" >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmptopmem_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "TOP IO Summary" >> $file_output
create_table_head1 >> $file_output
create_tr3 "/tmp/tmptopio_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "Basic Database Information" >> $file_output
create_table_head1 >> $file_output
my_base_info >>/tmp/tmpmy_base_`date +%y%m%d`.txt
sed -i -e "1d" -e "s/:/|/g" /tmp/tmpmy_base_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done </tmp/tmpmy_base_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "Running Status of Database" >> $file_output
create_table_head1 >> $file_output
my_stat_info
create_tr3 "/tmp/tmpmy_stat_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "IP Connection Statistics" >> $file_output
create_table_head1 >> $file_output
my_connip_info
while read line
do
create_tr2 "$line"
done < /tmp/tmpmy_connip_h1_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmpmy_connip_t1_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "Important Parameters" >> $file_output
create_table_head1 >> $file_output
my_param_info
while read line
do
create_tr2 "$line"
done < /tmp/tmpmy_param_h1_`date +%y%m%d`.txt
while read line
do
create_tr1 "$line"
done < /tmp/tmpmy_param_t1_`date +%y%m%d`.txt
create_table_end >> $file_output
create_html_head "Size of each database" >> $file_output
my_segm1_info >> $file_output
create_html_head "TOP10 Space Table" >> $file_output
my_segm2_info >> $file_output
create_html_head "High Water Level Meter" >> $file_output
my_segm3_info >> $file_output
create_html_head "Object type statistics" >> $file_output
my_obj1_info >> $file_output
create_html_head "Storage Engine Number Statistics" >> $file_output
my_obj2_info >> $file_output
create_html_head "Tables without primary keys" >> $file_output
my_obj3_info >> $file_output
create_html_head "Lock information" >> $file_output
my_lock_info >> $file_output
create_html_head "Innodb Status Information" >> $file_output
create_table_head1 >> $file_output
my_innodb_info >>/tmp/tmpmy_innodb_`date +%y%m%d`.txt
create_tr3 "/tmp/tmpmy_innodb_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "User Authorization Information" >> $file_output
create_table_head1 >> $file_output
my_user_info
create_tr3 "/tmp/tmpmy_user_`date +%y%m%d`.txt"
create_table_end >> $file_output
create_html_head "Slow SQL statistics" >> $file_output
create_html_end >> $file_output
sed -i "s/BORDER=1/width="68%" border="1" bordercolor="#000000" cellspacing="0px" style="border-collapse:collapse"/g" $file_output
rm -rf /tmp/tmp*_`date +%y%m%d`.txt
}
# This script must be executed as root
RUID=`id|awk -F( "{print $1}"|awk -F= "{print $2}"`
# #OR# RUID=`id | cut -d( -f1 | cut -d= -f2` #OR#ROOT_UID=0
if [ ${RUID} != "0" ];then
echo"This script must be executed as root"
exit 1
fi
PLATFORM=`uname`
if [ ${PLATFORM} = "HP-UX" ] ; then
echo "This script does not support HP-UX platform for the time being"
exit 1
elif [ ${PLATFORM} = "SunOS" ] ; then
echo "This script does not support SunOS platform for the time being"
exit 1
elif [ ${PLATFORM} = "AIX" ] ; then
echo "This script does not support AIX platform for the time being"
exit 1
elif [ ${PLATFORM} = "Linux" ] ; then
echo -e "
###########################################################################################
# #
#Make sure that the following parameters at the beginning of the script are correct. #
#myuser="root" (Database Account) #
#mypasswd="password" (Database password) #
#myip="192.168.11.101" (Database native IP) #
#myport="3307" (Database port) #
# Otherwise, the script cannot be executed properly. #
# #
###########################################################################################
"
#read -p "The database connection information is configured correctly. Please execute[yes or y]:" SELECT
#printf "
"
#if [ $SELECT == "yes" -o $SELECT == "y" ]; then
create_html
#else
# exit 1
#fi
fi免责声明:
① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的,并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据,供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。
② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
软考中级精品资料免费领
- 历年真题答案解析
- 备考技巧名师总结
- 高频考点精准押题
- 资料下载
- 历年真题
193.9 KB下载数265
191.63 KB下载数245
143.91 KB下载数1148
183.71 KB下载数642
644.84 KB下载数2756
相关文章
发现更多好内容- Java Zuul 如何在认证授权中进行应用?(java zuul在认证授权中的应用)
- Uncomtrade数据库免费版本查询指南
- Java Lombok 使用为何不生效及解决办法(java lombok使用不生效怎么解决)
- 如何有效修复uncomtrade数据库
- Java 中接口与抽象类的区别究竟有哪些?(java中接口和抽象类的区别是什么)
- 如何高效地部署 Java 应用程序?(如何部署Java应用程序)
- Java 类的访问控制顺序究竟是怎样的?(java类的访问控制顺序是什么)
- 如何轻松解决 java exe4j 安装问题?(如何解决java exe4j安装问题)
- 如何在 Java 中向 MySQL 数据库添加数据?(java怎么向mysql数据库中添加)
- 如何获取 Java 枚举类的值?(java枚举类的值怎么获取)
猜你喜欢
AI推送时光机通过shell检查mysql主机和数据库,生成html报表的脚本
数据库2016-12-30 咦!没有更多了?去看看其它编程学习网 内容吧