如何增加swap空间大小
发布网友
发布时间：2022-04-21 22:57
共2个回答
懂视网
时间：2022-04-12 04:16
查看当前swap大小，是2G root@vzwc1:~# zfs listNAME USED AVAIL REFER MOUNTPOINTrpool 8.68G 40.0G 4.90M /rpoolrpool/ROOT 4.03G 40.0G 31K legacyrpool/ROOT/solaris 4.03G 40.0G 3.72G /rpool/ROOT/solaris/var 265M 40.0G 202M /varrpool/VARSHARE 43K
查看当前swap大小，是2G
root@vzwc1:~# zfs list NAME USED AVAIL REFER MOUNTPOINT rpool 8.68G 40.0G 4.90M /rpool rpool/ROOT 4.03G 40.0G 31K legacy rpool/ROOT/solaris 4.03G 40.0G 3.72G / rpool/ROOT/solaris/var 265M 40.0G 202M /var rpool/VARSHARE 43K 40.0G 43K /var/share rpool/dump 2.58G 40.1G 2.50G - rpool/export 900K 40.0G 32K /export rpool/export/home 868K 40.0G 34K /export/home rpool/export/home/grid 36.5K 40.0G 36.5K /export/home/grid rpool/export/home/oracle 45K 40.0G 45K /export/home/oracle rpool/export/home/zhongwc 752K 40.0G 752K /export/home/zhongwc rpool/swap 2.06G 40.1G 2.00G - root@vzwc1:~# swap -l -h swapfile dev swaplo blocks free /dev/zvol/dsk/rpool/swap 285,2 4K 2.0G 2.0GZFS不支持mkfile的方式添加swap
root@vzwc1:~# mkfile 5g /var/swapfile root@vzwc1:~# swap -a /var/swapfile /var/swapfile: Invalid operation for this filesystem type可以使用zfs set的方式添加swap
root@vzwc1:~# zfs set volsize=5G rpool/swap再次查看swap
root@vzwc1:~# zfs list NAME USED AVAIL REFER MOUNTPOINT rpool 11.8G 36.9G 4.90M /rpool rpool/ROOT 4.03G 36.9G 31K legacy rpool/ROOT/solaris 4.03G 36.9G 3.72G / rpool/ROOT/solaris/var 265M 36.9G 202M /var rpool/VARSHARE 43K 36.9G 43K /var/share rpool/dump 2.58G 37.0G 2.50G - rpool/export 900K 36.9G 32K /export rpool/export/home 868K 36.9G 34K /export/home rpool/export/home/grid 36.5K 36.9G 36.5K /export/home/grid rpool/export/home/oracle 45K 36.9G 45K /export/home/oracle rpool/export/home/zhongwc 752K 36.9G 752K /export/home/zhongwc rpool/swap 5.16G 37.1G 5.00G - root@vzwc1:~# swap -l -h swapfile dev swaplo blocks free /dev/zvol/dsk/rpool/swap 285,2 4K 2.0G 2.0G /dev/zvol/dsk/rpool/swap 285,2 2.0G 3.0G 3.0G关闭和启动图形界面也有所变化
关闭图形界面
svcadm disable svc:/application/graphical-login/gdm:default
启动图形界面
svcadm enable svc:/application/graphical-login/gdm:default
grid@vzwc1:~/grid$ ./runcluvfy.sh stage -pre crsinst -n vzwc1,vzwc2 -fixup -verbose Performing pre-checks for cluster services setup Checking node reachability... Check: Node reachability from node "vzwc1" Destination Node Reachable? ------------------------------------ ------------------------ vzwc1 yes vzwc2 yes Result: Node reachability check passed from node "vzwc1" Checking user equivalence... Check: User equivalence for user "grid" Node Name Status ------------------------------------ ------------------------ vzwc2 passed vzwc1 passed Result: User equivalence check passed for user "grid" Checking node connectivity... Checking hosts config file... Node Name Status ------------------------------------ ------------------------ vzwc2 passed vzwc1 passed Verification of the hosts config file successful Interface information for node "vzwc2" Name IP Address Subnet Gateway Def. Gateway HW Address MTU ------ --------------- --------------- --------------- --------------- ----------------- ------ net0 192.168.1.62 192.168.1.0 192.168.1.62 192.168.1.1 08:00:27:FB:18:44 1500 net1 172.168.1.62 172.168.1.0 172.168.1.62 192.168.1.1 08:00:27:AE:EC:AC 1500 Interface information for node "vzwc1" Name IP Address Subnet Gateway Def. Gateway HW Address MTU ------ --------------- --------------- --------------- --------------- ----------------- ------ net0 192.168.1.61 192.168.1.0 192.168.1.61 192.168.1.1 08:00:27:43:92:4C 1500 net1 172.168.1.61 172.168.1.0 172.168.1.61 192.168.1.1 08:00:27:DC:D1:AE 1500 Check: Node connectivity of subnet "192.168.1.0" Source Destination Connected? ------------------------------ ------------------------------ ---------------- vzwc2[192.168.1.62] vzwc1[192.168.1.61] yes Result: Node connectivity passed for subnet "192.168.1.0" with node(s) vzwc2,vzwc1 Check: TCP connectivity of subnet "192.168.1.0" Source Destination Connected? ------------------------------ ------------------------------ ---------------- vzwc1:192.168.1.61 vzwc2:192.168.1.62 passed Result: TCP connectivity check passed for subnet "192.168.1.0" Check: Node connectivity of subnet "172.168.1.0" Source Destination Connected? ------------------------------ ------------------------------ ---------------- vzwc2[172.168.1.62] vzwc1[172.168.1.61] yes Result: Node connectivity passed for subnet "172.168.1.0" with node(s) vzwc2,vzwc1 Check: TCP connectivity of subnet "172.168.1.0" Source Destination Connected? ------------------------------ ------------------------------ ---------------- vzwc1:172.168.1.61 vzwc2:172.168.1.62 passed Result: TCP connectivity check passed for subnet "172.168.1.0" Interfaces found on subnet "192.168.1.0" that are likely candidates for VIP are: vzwc2 net0:192.168.1.62 vzwc1 net0:192.168.1.61 Interfaces found on subnet "172.168.1.0" that are likely candidates for VIP are: vzwc2 net1:172.168.1.62 vzwc1 net1:172.168.1.61 WARNING: Could not find a suitable set of interfaces for the private interconnect Checking subnet mask consistency... Subnet mask consistency check passed for subnet "192.168.1.0". Subnet mask consistency check passed for subnet "172.168.1.0". Subnet mask consistency check passed. Result: Node connectivity check passed Checking multicast communication... Checking subnet "192.168.1.0" for multicast communication with multicast group "230.0.1.0"... Check of subnet "192.168.1.0" for multicast communication with multicast group "230.0.1.0" passed. Checking subnet "172.168.1.0" for multicast communication with multicast group "230.0.1.0"... Check of subnet "172.168.1.0" for multicast communication with multicast group "230.0.1.0" passed. Check of multicast communication passed. Check: Total memory Node Name Available Required Status ------------ ------------------------ ------------------------ ---------- vzwc2 5GB (5242880.0KB) 2GB (2097152.0KB) passed vzwc1 5GB (5242880.0KB) 2GB (2097152.0KB) passed Result: Total memory check passed Check: Available memory Node Name Available Required Status ------------ ------------------------ ------------------------ ---------- vzwc2 4.0248GB (4220352.0KB) 50MB (51200.0KB) passed vzwc1 3.5546GB (3727320.0KB) 50MB (51200.0KB) passed Result: Available memory check passed Check: Swap space Node Name Available Required Status ------------ ------------------------ ------------------------ ---------- vzwc2 6GB (6291452.0KB) 5GB (5242880.0KB) passed vzwc1 6GB (6291452.0KB) 5GB (5242880.0KB) passed Result: Swap space check passed Check: Free disk space for "vzwc2:/var/tmp/" Path Node Name Mount point Available Required Status ---------------- ------------ ------------ ------------ ------------ ------------ /var/tmp/ vzwc2 /var 35.8776GB 1GB passed Result: Free disk space check passed for "vzwc2:/var/tmp/" Check: Free disk space for "vzwc1:/var/tmp/" Path Node Name Mount point Available Required Status ---------------- ------------ ------------ ------------ ------------ ------------ /var/tmp/ vzwc1 /var 32.7638GB 1GB passed Result: Free disk space check passed for "vzwc1:/var/tmp/" Check: User existence for "grid" Node Name Status Comment ------------ ------------------------ ------------------------ vzwc2 passed exists(1100) vzwc1 passed exists(1100) Checking for multiple users with UID value 1100 Result: Check for multiple users with UID value 1100 passed Result: User existence check passed for "grid" Check: Group existence for "oinstall" Node Name Status Comment ------------ ------------------------ ------------------------ vzwc2 passed exists vzwc1 passed exists Result: Group existence check passed for "oinstall" Check: Group existence for "dba" Node Name Status Comment ------------ ------------------------ ------------------------ vzwc2 passed exists vzwc1 passed exists Result: Group existence check passed for "dba" Check: Membership of user "grid" in group "oinstall" [as Primary] Node Name User Exists Group Exists User in Group Primary Status ---------------- ------------ ------------ ------------ ------------ ------------ vzwc2 yes yes yes yes passed vzwc1 yes yes yes yes passed Result: Membership check for user "grid" in group "oinstall" [as Primary] passed Check: Membership of user "grid" in group "dba" Node Name User Exists Group Exists User in Group Status ---------------- ------------ ------------ ------------ ---------------- vzwc2 yes yes yes passed vzwc1 yes yes yes passed Result: Membership check for user "grid" in group "dba" passed Check: Run level Node Name run level Required Status ------------ ------------------------ ------------------------ ---------- vzwc2 3 3 passed vzwc1 3 3 passed Result: Run level check passed Check: Hard limits for "maximum open file descriptors" Node Name Type Available Required Status ---------------- ------------ ------------ ------------ ---------------- vzwc2 hard 65536 65536 passed vzwc1 hard 65536 65536 passed Result: Hard limits check passed for "maximum open file descriptors" Check: Soft limits for "maximum open file descriptors" Node Name Type Available Required Status ---------------- ------------ ------------ ------------ ---------------- vzwc2 soft 65536 1024 passed vzwc1 soft 65536 1024 passed Result: Soft limits check passed for "maximum open file descriptors" Check: Hard limits for "maximum user processes" Node Name Type Available Required Status ---------------- ------------ ------------ ------------ ---------------- vzwc2 hard 29995 16384 passed vzwc1 hard 29995 16384 passed Result: Hard limits check passed for "maximum user processes" Check: Soft limits for "maximum user processes" Node Name Type Available Required Status ---------------- ------------ ------------ ------------ ---------------- vzwc2 soft 29995 2047 passed vzwc1 soft 29995 2047 passed Result: Soft limits check passed for "maximum user processes" Check: System architecture Node Name Available Required Status ------------ ------------------------ ------------------------ ---------- vzwc2 64-bit amd64 kernel modules 64-bit amd64 kernel modules passed vzwc1 64-bit amd64 kernel modules 64-bit amd64 kernel modules passed Result: System architecture check passed Check: Kernel version Node Name Available Required Status ------------ ------------------------ ------------------------ ---------- vzwc2 5.11 5.11 passed vzwc1 5.11 5.11 passed Result: Kernel version check passed Checking for multiple users with UID value 0 Result: Check for multiple users with UID value 0 passed Check: Current group ID Result: Current group ID check passed Starting check for consistency of primary group of root user Node Name Status ------------------------------------ ------------------------ vzwc2 passed vzwc1 passed Check for consistency of root user's primary group passed Starting Clock synchronization checks using Network Time Protocol(NTP)... NTP Configuration file check started... Network Time Protocol(NTP) configuration file not found on any of the nodes. Oracle Cluster Time Synchronization Service(CTSS) can be used instead of NTP for time synchronization on the cluster nodes No NTP Daemons or Services were found to be running Result: Clock synchronization check using Network Time Protocol(NTP) passed Checking Core file name pattern consistency... Core file name pattern consistency check passed. Checking to make sure user "grid" is not in "root" group Node Name Status Comment ------------ ------------------------ ------------------------ vzwc2 passed does not exist vzwc1 passed does not exist Result: User "grid" is not part of "root" group. Check passed Check default user file creation mask Node Name Available Required Comment ------------ ------------------------ ------------------------ ---------- vzwc2 0022 0022 passed vzwc1 0022 0022 passed Result: Default user file creation mask check passed Checking consistency of file "/etc/resolv.conf" across nodes Checking the file "/etc/resolv.conf" to make sure only one of domain and search entries is defined File "/etc/resolv.conf" does not have both domain and search entries defined Checking if domain entry in file "/etc/resolv.conf" is consistent across the nodes... domain entry in file "/etc/resolv.conf" is consistent across nodes Checking if search entry in file "/etc/resolv.conf" is consistent across the nodes... search entry in file "/etc/resolv.conf" is consistent across nodes Checking DNS response time for an unreachable node Node Name Status ------------------------------------ ------------------------ vzwc2 passed vzwc1 passed The DNS response time for an unreachable node is within acceptable limit on all nodes File "/etc/resolv.conf" is consistent across nodes Check: Time zone consistency Result: Time zone consistency check passed Pre-check for cluster services setup was successful. grid@vzwc1:~/grid$
热心网友
时间：2022-04-12 01:24
第一步：确保系统中有足够的空间来用做swap交换空间，我使用的是KVM,准备在一个独立的文件系统中添加一个swap交换文件，在/opt/image中添加2G的swap交换文件
第二步：添加交换文件并设置其大小为2G，使用如下命令
[root@sense image]# dd if=/dev/zero of=/opt/image/swapbs=1024 count=2048000
过段时间就返回如下结果：
2048000+0 records in
2048000+0 records out
2097152000 bytes (2.1 GB) copied, 272.867 seconds, 7.7MB/s
第三步：创建（设置）交换空间，使用命令mkswap
[root@sense image]# mkswap /opt/image/swap
Setting up swapspace version 1, size = 2097147 kB
第四步：检查现有的交换空间大小，使用命令free
[root@sense image]# free -m
total used free shared buffers cached
Mem: 1011 989 21 0 1 875
-/+buffers/cache: 112 898
Swap: 1027 0 1027
或者检查meminfo文件
grep SwapTotal /proc/meminfo
第五步：启动新增加的2G的交换空间，使用命令swapon
[root@sense image]# swapon /opt/image/swap
第六步:确认新增加的2G交换空间已经生效，使用命令free
[[root@sense image]# free -m
total used free shared buffers cached
Mem: 1011 995 15 0 4 877
-/+buffers/cache: 113 897
Swap: 3027 0 3027
或者检查meminfo文件
grep SwapTotal /proc/meminfo
第七步：修改/etc/fstab文件，使得新加的2G交换空间在系统重新启动后自动生效
在文件最后加入：
/opt/image/swap swap swap defaults 0 0
