工作中要保证生产环境部署的consul的集群能够安全稳定地对外提供服务,即使出现系统故障也能快速恢复,这里将讲述部分的备份还原操作及KV的导入导出操作。
需要备份的主要有两类数据:consul相关的配置文件、consul的服务器状态,采用下面的脚本备份就可以了:
- ts=$(date +%Y%m%d%H%M%S)
-
- # 备份配置文件
- tar -czpf consul_config_$ts.tar.gz /etc/consul/config.json /etc/consul/consul.d
-
- # 备份consul的服务器状态,注意由于该consul开启了ACL,执行consul snapshot save时必须带Management Token,关于consul ACL token的说明见上一篇"consul安全加固"
- consul snapshot save --http-addr=http://10.12.142.216:8500 -token=b3a9bca3-6e8e-9678-ea35-ccb8fb272d42 consul_state_$ts.snap
-
- # 查看一下生成的consul服务器状态文件
- consul snapshot inspect consul_state_$ts.snap
最后将生成的consul_config_xxx.tar.gz
、consul_state_xxx.snap
拷贝到其它服务器妥善存储。
还原也比较简单,采用下面的脚本就可以了:
- # 还原配置文件
- tar -xzpf consul_config_20180521145032.tar.gz -C /
-
- # 还原consul服务器状态
- consul snapshot restore --http-addr=http://10.12.142.216:8500 -token=b3a9bca3-6e8e-9678-ea35-ccb8fb272d42 consul_state_20180521145032.snap
consul直接提供命令对KV里存储的数据进行导入导出,如下:
- $ ts=$(date +%Y%m%d%H%M%S)
-
- # 导出所有kv键值对,注意最后一个参数是导出键值对的前缀,为空字符串说明要导出所有
- $ consul kv export --http-addr=http://10.12.142.216:8500 -token=b3a9bca3-6e8e-9678-ea35-ccb8fb272d42 '' > consul_kv_$ts.json
-
- # 查看下导出的json文件格式
- $ cat consul_kv_$ts.json
- [
- {
- "key": "xxxxxx",
- "flags": 0,
- "value": "yyyyyy"
- },
- {
- "key": "xxxxxx2",
- "flags": 0,
- "value": "eyJ2ZXJzaW9uX3RpbWVzdGFtcCI6IC0xfQ=="
- },
- ]
发现是每个键值对都是json数值中一项,其中key为键值对Key的名称,value为键值对Value的base64编码,使用base64 -d
命令编码就可以看到原始的value值,如:
- $ echo 'eyJ2ZXJzaW9uX3RpbWVzdGFtcCI6IC0xfQ==' | base64 -d
- {"version_timestamp": -1}
导入就更简单了:
consul kv import --http-addr=http://10.12.142.216:8500 -token=b3a9bca3-6e8e-9678-ea35-ccb8fb272d42 @consul_kv_20180521150322.json
OVER..................................................................................................完结撒花
consul_backup.sh
- [root@bastion back_consul]# cat consul_backup.sh
- #!/bin/bash
- # Author:laujian
-
-
- ts=$(date +"%Y_%m_%d_%H_%M")
-
- # 通过运行脚本添加参数 加consul 地址 token传进来
- #consul_token='8dc1eb67-1f5f-4e10-ad9d-5e58b047647c'
- #http_addr='consul.hrfax.local'
- http_addr='192.168.12.121:32000'
- consul_token='8dc1eb67-1f5f-4e10-ad9d-5e58b047647c'
- processName="consul_backup.sh"
- processNum=`ps -ef | grep $processName | grep -v grep | wc -l`
- #if [ $processName gt "3" ];then
- #echo " $processName already existed!"
- #exit 1
- #fi
-
- #status_dir=`pwd`/status_dir
- kv_dir=`pwd`/kv_dir
-
- #[ -d $status_dir ] || mkdir $status_dir
- [ -d $kv_dir ] || mkdir $kv_dir
-
-
- status_backup() {
-
- `pwd`/consul snapshot save -token=${consul_token} -http-addr=${http_addr} $status_dir/consul_state_${ts}.snap
-
- }
-
- kv_backup() {
-
- `pwd`/consul kv export -token=${consul_token} -http-addr=${http_addr} > $kv_dir/consul_kv_${ts}_${http_addr}.json
-
- }
-
- kv_restore() {
- date=$1
- tar xPf $kv_dir/consul_kv_${date}.tar.gz -C /
- ls $kv_dir/consul_kv_${date}.json > /dev/null
- if [ $? == 0 ];then
-
- `pwd`/consul kv import -token=${consul_token} -http-addr=${http_addr} @$kv_dir/consul_kv_${date}.json
-
- fi
-
- }
-
- kv_backup
update_consul.sh
- #!/bin/bash
- cd /data/deployment_mediums;git pull
- sleep 5
- consul_address='192.168.12.121:32000'
- consul_token='8dc1eb67-1f5f-4e10-ad9d-5e58b047647c'
- cd /data/deployment_mediums/$1
- for yaml in `ls consul/*`;do
- consul_key=`cat $yaml |head -1 |sed 's/#//g' |sed 's/ //g'`
- consul_data=`cat $yaml | grep -v $consul_key`
- curl --location --request PUT "http://${consul_address}/v1/kv/${consul_key}?dc=hrfax" --header "X-Consul-Token: ${consul_token}" --header "Content-Type: text/plain" --data "${consul_data}"
- done
-
-
- if [[ $? -eq 0 ]];then
- echo "更新consul成功"
- fi
- [root@bastion option-consul]# cat update_consul.sh
- #!/bin/bash
- cd /data/deployment_mediums;git pull
- sleep 5
- consul_address='192.168.12.121:32000'
- consul_token='8dc1eb67-1f5f-4e10-ad9d-5e58b047647c'
- cd /data/deployment_mediums/$1
- for yaml in `ls consul/*`;do
- consul_key=`cat $yaml |head -1 |sed 's/#//g' |sed 's/ //g'`
- consul_data=`cat $yaml | grep -v $consul_key`
- curl --location --request PUT "http://${consul_address}/v1/kv/${consul_key}?dc=hrfax" --header "X-Consul-Token: ${consul_token}" --header "Content-Type: text/plain" --data "${consul_data}"
- done
-
-
- if [[ $? -eq 0 ]];then
- echo "更新consul成功"
- fi