1.1.1 硬件要求 云化主机资源需要较多,大致规划如下 l Oracle数据库2台,用于配置和生产数据,需要较高配置 l DDAL和Nats消息系统18台, l 余额服务12台,需要大内存 l 累积量服务12台,需要大存储 具体配置要求见主机需求excel! 1.1.2 系统要求Red Hat Enterprise LinuxServer release 7.0(Santiago)或者以上 1.1.3 参数要求系统参数ulimit按照如下要求设置 core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 514978 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 102400 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 65536 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited ulimit参数: -S use the `soft' resource limit -H use the `hard' resource limit -a all current limits are reported -b the socket buffer size -c the maximum size of core files created -d the maximum size of a process's data segment -e the maximum scheduling priority (`nice') -f the maximum size of files written by the shell and its children -i the maximum number of pending signals -l the maximum size a process may lock into memory -m the maximum resident set size -n the maximum number of open file descriptors -p the pipe buffer size -q the maximum number of bytes in POSIX message queues -r the maximum real-time scheduling priority -s the maximum stack size -t the maximum amount of cpu time in seconds -u the maximum number of user processes -v the size of virtual memory -x the maximum number of file locks 内核参数按照如下设置 #每个消息队列的最大字节限制 kernel.msgmnb = 2147483647 #每个消息的最大size. kernel.msgmax = 2147483647 #内核参数定义单个共享内存段的最大值 kernel.shmmax = 68719476736 #参数是控制共享内存页数 kernel.shmall = 4294967296 kernel.unknown_nmi_panic = 1 #这个参数决定了系统中同时运行的最大的message queue的个数 kernel.msgmni = 60000 kernel.sem = 10000 32000 100 256 #SEMMSL 10000 表示每个信号集中的最大信号量数目 #SEMMNS 32000 表示系统范围内的最大信号量总数目 #SEMOPM 100 表示每个信号发生时的最大系统操作数目 #SEMMNI 256 表示系统范围内的最大信号集总数目 修改方式:root用户修改 1) 修改/etc/sysctl.conf 2) 重新加载sysctl-p /etc/sysctl.conf
3) 查看内核参数ipcs –l
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