当yum安装包时显示系统空间不足，求指教
[BEGIN] 2019/4/21 1:01:07
[root@fushan cache]# yum install mysql-server
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
mysql-connectors-community | 2.5 kB 00:00:00
mysql-tools-community | 2.5 kB 00:00:00
mysql56-community | 2.5 kB 00:00:00
updates | 3.4 kB 00:00:00
正在解决依赖关系
--> 正在检查事务
---> 软件包 mysql-community-server.x86_64.0.5.6.43-2.el7 将被 安装
--> 正在处理依赖关系 mysql-community-common(x86-64) = 5.6.43-2.el7，它被软件包 mysql-community-server-5.6.43-2.el7.x86_64 需要
--> 正在处理依赖关系 mysql-community-client(x86-64) >= 5.6.10，它被软件包 mysql-community-server-5.6.43-2.el7.x86_64 需要
--> 正在检查事务
---> 软件包 mysql-community-client.x86_64.0.5.6.43-2.el7 将被 安装
--> 正在处理依赖关系 mysql-community-libs(x86-64) >= 5.6.10，它被软件包 mysql-community-client-5.6.43-2.el7.x86_64 需要
---> 软件包 mysql-community-common.x86_64.0.5.6.43-2.el7 将被 安装
--> 正在检查事务
---> 软件包 mariadb-libs.x86_64.1.5.5.60-1.el7_5 将被 取代
---> 软件包 mysql-community-libs.x86_64.0.5.6.43-2.el7 将被 舍弃
--> 解决依赖关系完成
依赖关系解决
=================================================================================================================================================================================================================
Package 架构 版本 源 大小
=================================================================================================================================================================================================================
正在安装:
mysql-community-libs x86_64 5.6.43-2.el7 mysql56-community 2.0 M
替换 mariadb-libs.x86_64 1:5.5.60-1.el7_5
mysql-community-server x86_64 5.6.43-2.el7 mysql56-community 59 M
为依赖而安装:
mysql-community-client x86_64 5.6.43-2.el7 mysql56-community 20 M
mysql-community-common x86_64 5.6.43-2.el7 mysql56-community 257 k
事务概要
=================================================================================================================================================================================================================
安装 2 软件包 (+2 依赖软件包)
总计：81 M
总下载量：81 M
Is this ok [y/d/N]: y
Downloading packages:
警告：/var/cache/yum/x86_64/7/mysql56-community/packages/mysql-community-libs-5.6.43-2.el7.x86_64.rpm: 头V3 DSA/SHA1 Signature, 密钥 ID 5072e1f5: NOKEY=======================-] 262 kB/s | 2.0 MB 00:00:00 ETA
mysql-community-libs-5.6.43-2.el7.x86_64.rpm 的公钥尚未安装
mysql-community-libs-5.6.43-2.el7.x86_64.rpm | 2.0 MB 00:00:07
Error downloading packages:
mysql-community-client-5.6.43-2.el7.x86_64: 下载目录 /var/cache/yum/x86_64/7/mysql56-community/packages 空间不足
* 空闲 15 M
* 需要 20 M
mysql-community-server-5.6.43-2.el7.x86_64: 下载目录 /var/cache/yum/x86_64/7/mysql56-community/packages 空间不足
* 空闲 15 M
* 需要 59 M
[root@fushan cache]# df -hai
文件系统 Inode 已用(I) 可用(I) 已用(I)% 挂载点
rootfs - - - - /
sysfs 0 0 0 - /sys
proc 0 0 0 - /proc
devtmpfs 120K 389 120K 1% /dev
securityfs 0 0 0 - /sys/kernel/security
tmpfs 124K 1 124K 1% /dev/shm
devpts 0 0 0 - /dev/pts
tmpfs 124K 701 124K 1% /run
tmpfs 124K 16 124K 1% /sys/fs/cgroup
cgroup 0 0 0 - /sys/fs/cgroup/systemd
pstore 0 0 0 - /sys/fs/pstore
cgroup 0 0 0 - /sys/fs/cgroup/freezer
cgroup 0 0 0 - /sys/fs/cgroup/net_cls,net_prio
cgroup 0 0 0 - /sys/fs/cgroup/devices
cgroup 0 0 0 - /sys/fs/cgroup/memory
cgroup 0 0 0 - /sys/fs/cgroup/perf_event
cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct
cgroup 0 0 0 - /sys/fs/cgroup/cpuset
cgroup 0 0 0 - /sys/fs/cgroup/blkio
cgroup 0 0 0 - /sys/fs/cgroup/hugetlb
cgroup 0 0 0 - /sys/fs/cgroup/pids
configfs 0 0 0 - /sys/kernel/config
/dev/mapper/centos-root 141K 114K 28K 81% /
selinuxfs 0 0 0 - /sys/fs/selinux
systemd-1 - - - - /proc/sys/fs/binfmt_misc
hugetlbfs 0 0 0 - /dev/hugepages
mqueue 0 0 0 - /dev/mqueue
debugfs 0 0 0 - /sys/kernel/debug
/dev/sda1 512K 326 512K 1% /boot
sunrpc 0 0 0 - /var/lib/nfs/rpc_pipefs
tmpfs 124K 6 124K 1% /run/user/42
tmpfs 124K 13 124K 1% /run/user/1000
tmpfs 124K 1 124K 1% /run/user/0
binfmt_misc 0 0 0 - /proc/sys/fs/binfmt_misc
[END] 2019/4/21 1:02:33