Centos 6.7安装docker-engine-1.7.1-1.el6.x86_64.rpm

在安装完成后执行 service docker start 任然没有启动，查看错误日志发现如下错误 cat /var/log/docker ``` time="2019-03-20T06:48:53.939998118Z" level=warning msg="You are running linux kernel version 2.6.32-573.26.1.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.10.0." time="2019-03-20T06:48:53.960733120Z" level=info msg="Listening for HTTP on unix (/var/run/docker.sock)" time="2019-03-20T06:48:53.962487949Z" level=info msg="[graphdriver] using prior storage driver \"devicemapper\"" time="2019-03-20T06:48:53.980257703Z" level=warning msg="Running modprobe bridge nf_nat failed with message: install /bin/true\ninstall /sbin/modprobe --ignore-install bridge && /sbin/sysctl -q -w net.bridge.bridge-nf-call-arptables=0 net.bridge.bridge-nf-call-iptables=0 net.bridge.bridge-nf-call-ip6tables=0\ninstall /bin/true\ninsmod /lib/modules/2.6.32-573.26.1.el6.x86_64/kernel/net/bridge/bridge.ko \n, error: exit status 1" time="2019-03-20T06:48:54.040926533Z" level=fatal msg="Error starting daemon: Error initializing network controller: Error creating default \"bridge\" network: package not installed" ``` 看日志信息Running modprobe bridge nf_nat failed with message感觉像是内核模块没有加载成功，于是手动执行 modprobe bridge nf_nat ``` FATAL: Error inserting bridge (/lib/modules/2.6.32-573.26.1.el6.x86_64/kernel/net/bridge/bridge.ko): Unknown symbol in module, or unknown parameter (see dmesg) FATAL: Error running install command for bridge ``` 看这错误信息确实是bridge模块没有加载成功，这个时候错误信息最后提示see dmesg，于是执行 dmsg -c ``` bridge: Unknown symbol ipv6_dev_get_saddr nf_conntrack version 0.5.0 (16384 buckets, 65536 max) ip_tables: (C) 2000-2006 Netfilter Core Team bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr bridge: Unknown symbol ipv6_dev_get_saddr ``` 看内核错误日志显示是ipv6模块相关的符号找不到，于是执行 lsmod ``` Module Size Used by iptable_nat 5923 0 ipt_addrtype 2153 0 ip_tables 17831 1 iptable_nat nf_nat 22676 1 iptable_nat nf_conntrack_ipv4 9154 3 iptable_nat,nf_nat nf_conntrack 79206 3 iptable_nat,nf_nat,nf_conntrack_ipv4 nf_defrag_ipv4 1483 1 nf_conntrack_ipv4 stp 2218 0 llc 5418 1 stp dm_thin_pool 52448 0 dm_bio_prison 6833 1 dm_thin_pool dm_persistent_data 56181 1 dm_thin_pool dm_bufio 20372 1 dm_persistent_data libcrc32c 1246 1 dm_persistent_data vsock 46582 2 vmware_balloon 7199 0 sg 29318 0 vmci 74925 1 vsock i2c_piix4 11232 0 i2c_core 29132 1 i2c_piix4 shpchp 29130 0 ext4 378683 2 jbd2 93252 1 ext4 mbcache 8193 1 ext4 sd_mod 37030 4 crc_t10dif 1209 1 sd_mod sr_mod 15049 0 cdrom 39085 1 sr_mod mptsas 51992 3 mptscsih 36638 1 mptsas mptbase 93647 2 mptsas,mptscsih scsi_transport_sas 35588 1 mptsas vmxnet3 42980 0 pata_acpi 3701 0 ata_generic 3837 0 ata_piix 24409 0 dm_mirror 14384 0 dm_region_hash 12085 1 dm_mirror dm_log 9930 2 dm_mirror,dm_region_hash dm_mod 99168 12 dm_thin_pool,dm_persistent_data,dm_bufio,dm_mirror,dm_log ``` 查看内核加载的模块列表确实没有加载ipv6相关模块，于是执行如下命令查看ipv6模块位置 modinfo ipv6 ``` filename: /lib/modules/2.6.32-573.26.1.el6.x86_64/kernel/net/ipv6/ipv6.ko alias: net-pf-10 license: GPL description: IPv6 protocol stack for Linux author: Cast of dozens srcversion: 938CBE01719FEBE2EB3B1A8 depends: vermagic: 2.6.32-573.26.1.el6.x86_64 SMP mod_unload modversions parm: disable:Disable IPv6 module such that it is non-functional (int) parm: disable_ipv6:Disable IPv6 on all interfaces (int) parm: autoconf:Enable IPv6 address autoconfiguration on all interfaces (int) ``` 找到了内核模块位置后，加载模块 insmod /lib/modules/2.6.32-573.26.1.el6.x86_64/kernel/net/ipv6/ipv6.ko 加载成功后在加载 文章开头的bridge内核模块 modprobe bridge 至此问题解决启动docker成功