全栈开发笔记

镜像下载慢，如何提高下载速度？

touch /etc/docker/daemon.json
cat >> /etc/docker/daemon.json <<EOF
{
"insecure-registries": ["0.0.0.0/0"],
"registry-mirrors": ["https://7bezldxe.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload && systemctl restart docker

如何配置Docker后端存储驱动？
以overlay为例

touch /etc/docker/daemon.json
cat >> /etc/docker/daemon.json <<EOF
{
"storage-driver": "overlay"
}
EOF
systemctl daemon-reload && systemctl restart docker

#seven# #sqeven#

追加内容 2017-12-18 11:11:35

Rancher-k8s加速安装文档

docker run -d --restart always –name rancher_server -p 8080:8080 rancher/server:stable && sudo docker logs -f rancher-server
docker run -d --name rancher-server -p 8080:8080 --restart=unless-stopped -e DEFAULT_CATTLE_CATALOG_URL='{"catalogs":{"library":{"url":"http://git.oschina.net/rancher/rancher-catalog.git","branch":"k8s-cn"}}}' rancher/server:stable && sudo docker logs -f rancher-server

Rancher基本配置：
因为Rancher修改过的设置参数无法同步到已创建的环境，所以在创建环境前要把相关设置配置好。比如，如果你想让Rancher默认去拉取私有仓库的镜像，需要配置registry.default= 参数等。

应用商店（Catalog）地址配置：在系统管理\系统设置中，找到应用商店。禁用Rancher 官方认证仓库并按照下图配置。

名称：library （全小写）
地址： https://git.oschina.net/rancher/rancher-catalog.git
分支： k8s-cn

追加内容 2019-01-08 15:11:52

# 集群
1. 集群状态
```bash
ceph -s
```
2. 集群实时运行状态
```bash
ceph -w
```
3. 集群健康状态细节
```bash
ceph health detail
```
4. 查看ceph存储空间
```bash
ceph df
```
5. 查看集群的详细配置
```bash
ceph daemon mon.by-master01 config show | more
```
6. 查看ceph log日志所在的目录
```bash
ceph-conf --name mon.node1 --show-config-value log_file
```
7. 查看集群配置
```bash
ceph --show-config
```
# mon
1. 查看mon的状态信息
```bash
ceph mon stat
```
2. 查看mon的选举状态
```bash
ceph quorum_status
```
3. 查看mon的映射信息
```bash
ceph mon dump
```
4. 删除一个mon节点
```bash
ceph mon remove node1
```
5. 获得一个正在运行的mon map，并保存在1.txt文件中
```bash
ceph mon remove node1
```
6. 查看上面获得的map
```bash
monmaptool --print 1.txt 
```
7. 查看mon的详细状态
```bash
ceph daemon mon.node1  mon_status 
```
# 修改配置文件
```bash
# 临时修改所有OSD和恢复相关的选项
ceph tell osd.* injectargs '--osd-max-backfills 1'             # 并发回填操作数
ceph tell osd.* injectargs '--osd-recovery-threads 1'          # 恢复线程数量
ceph tell osd.* injectargs '--osd-recovery-op-priority 1'      # 恢复线程优先级  
ceph tell osd.* injectargs '--osd-client-op-priority 63'       # 客户端线程优先级
ceph tell osd.* injectargs '--osd-recovery-max-active 1'       # 最大活跃的恢复请求数 
```
# osd
1. 查看ceph osd运行状态
```bash
ceph osd stat 
```
2. 查看osd映射信息
```bash
ceph osd dump 
```
3. 查看osd的目录树
```bash
ceph osd tree / ceph osd df tree (osd使用情况)
```
4. down掉一个osd硬盘
```bash
ceph osd down 0   # down掉osd.0节点
```
5. 在集群中删除一个osd硬盘
```bash
ceph osd rm 0
```
6. 在集群中删除一个osd 硬盘 crush map
```bash
ceph osd crush rm osd.0
```
7. 在集群中删除一个osd的host节点
```bash
ceph osd crush rm node1
```
8. 查看最大osd的个数
```bash
ceph osd getmaxosd
```
9. 设置最大的osd的个数（当扩大osd节点的时候必须扩大这个值）
```bash
ceph osd setmaxosd 10
```
10. 设置osd crush的权重
```bash
ceph osd crush reweight osd.3 1.0
```
11. 把一个osd节点逐出集群
```bash
ceph osd out osd.3
```
12. 把逐出的osd加入集群
```bash
ceph osd in osd.3
```
13. 暂停osd （暂停后整个集群不再接收数据）
```bash
ceph osd pause
```
14. 再次开启osd 
```bash
ceph osd unpause
```
15. 把逐出的osd加入集群
```bash
ceph osd in osd.3
```
16. 重启osd
```bash
systemctl restart ceph-osd.target
```
# pg
1. 查看pg状态
```bash
ceph pg stat
```
2. 查看pg组的映射信息
```bash
ceph pg dump
```
3. 查看一个PG的map
```bash
ceph pg map 0.3f
```
4. 查询一个pg的详细信息
```bash
ceph pg 0.26 query
```
5. 查看pg中stuck的状态
```bash
ceph pg dump_stuck unclean
ceph pg dump_stuck inactive
ceph pg dump_stuck stale
```
6. 恢复一个丢失的pg
```bash
ceph pg {pg-id} mark_unfound_lost revert
```
# pool
1. 查看pool数量
```bash
ceph osd lspools
```
2. 创建一个pool
```bash
ceph osd pool create test 100 #这里的100指的是pg组
```
3. 为一个ceph pool配置配额
```bash
ceph osd pool set-quota data max_objects 10000
```
4. 在集群中删除一个pool
```bash
ceph osd pool delete test  test  --yes-i-really-really-mean-it  #集群名字需要重复两次
```
5. 显示集群中pool的详细信息
```bash
rados df
```
6. 给一个pool创建一个快照
```bash
ceph osd pool mksnap test test-snap 
```
7. 删除pool的快照
```bash
ceph osd pool rmsnap test test-snap
```
8. 查看test池的pg数量
```bash
ceph osd pool set test pg_num 100
```
9. 设置test池的最大存储空间为100T（默认是1T)
```bash
ceph osd pool set test target_max_bytes 100000000000000
```
10. 设置test池的副本数是3
```bash
ceph osd pool set test size 3 
```
11. 设置test池能接受写操作的最小副本为2
```bash
ceph osd pool set test min_size 2 
```
12. 查看集群中所有pool的副本参数
```bash
ceph osd dump | grep 'replicated size' 
```
13. 设置一个pool的pgp数量
```bash
ceph osd pool set test pgp_num 100
```
# ceph 常用运维操作
## ceph full 处理方法
```bash
1. 设置 osd 禁止读写
ceph osd pause
2. 通知 mon 和 osd 修改 full 阈值
ceph tell mon.* injectargs "--mon-osd-full-ratio 0.96"
ceph tell osd.* injectargs "--mon-osd-full-ratio 0.96"
3. 通知 pg 修改 full 阈值
ceph pg set_full_ratio 0.96 (Luminous版本之前)
ceph osd set-full-ratio 0.96 (Luminous版本)
4. 解除 osd 禁止读写
ceph osd unpause
5. 删除相关数据
最好是 nova 或者 glance 删除
也可以在 ceph 层面删除
6. 配置还原
ceph tell mon.* injectargs "--mon-osd-full-ratio 0.95"
ceph tell osd.* injectargs "--mon-osd-full-ratio 0.95"
ceph pg set_full_ratio 0.95 (Luminous版本之前)
ceph osd set-full-ratio 0.95 (Luminous版本)
OpenShift
https://github.com/ceph/ceph-docker
https://github.com/ceph/ceph-ansible
https://github.com/ceph/ceph-deploy

评论（42）

• 
  0  

  sqeven (楼主)

  kubectl create -f https://rawgit.com/kubernetes/dashboard/master/src/deploy/kubernetes-dashboard.yaml

  
  
  2017-12-18 11:37:37 回复
• 
  0  

  sqeven (楼主)

  方法1：直接改表数据
  update user set host = '%' where user = 'root' limit 1;
  flush privileges;
  方法2：授权法
  例如，你想myuser使用mypassword从任何主机连接到mysql服务器的话。
  GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
  FLUSH PRIVILEGES;
  如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器，并使用mypassword作为密码
  GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
  FLUSH PRIVILEGES;
  如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器的dk数据库，并使用mypassword作为密码
  GRANT ALL PRIVILEGES ON dk.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
  FLUSH PRIVILEGES;

  
  
  2017-12-20 11:43:53 回复
• 
  0  

  sqeven (楼主)

  pip install airflow[all]
  这样就可以安装所有依赖的东西，
  配置环境变量：
  export AIRFLOW_HOME=~/airflow
  配置mysql数据库存储airflow信息：
  sql_alchemy_conn = mysql://user:password@ip:port/airflow
  初始化数据库：
  airflow initdb
  启动Web Server,指定端口:
  airflow webserver –p 18080

  
  
  2017-12-20 11:47:45 回复
• 
  0  

  sqeven (楼主)

  sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"

  
  
  2017-12-20 11:54:34 回复
• 
  0  

  sqeven (楼主)

  sql_mode = 'NO_ENGINE_SUBSTITUTION'

  
  
  2017-12-20 11:58:37 回复
• 
  0  

  sqeven (楼主)

  docker rm -f $(docker ps -qa)
  rm -rf /var/etcd/
  for m in $(tac /proc/mounts | awk '{print $2}' | grep /var/lib/kubelet); do
      umount $m || true
  done
  rm -rf /var/lib/kubelet/
  for m in $(tac /proc/mounts | awk '{print $2}' | grep /var/lib/rancher); do
      umount $m || true
  done
  rm -rf /var/lib/rancher/
  rm -rf /run/kubernetes/

  
  
  2017-12-23 23:01:55 回复
• 
  0  

  sqeven (楼主)

  docker run -d --restart=unless-stopped \
       -e DEFAULT_CATTLE_CATALOG_URL='{"catalogs":{"community":{"url":"https://github.com/rancher/community-catalog.git","branch":"master"},"library":{"url":"https://github.com/niusmallnan/rancher-catalog.git","branch":"k8s-cn"}}}' \
       --name rancher-server \
       -p 8080:8080 rancher/server:stable

  
  
  2017-12-23 23:03:56 回复
• 
  0  

  sqeven (楼主)

  docker login --username=xiaoseven1164749586 registry.cn-hangzhou.aliyuncs.com
  docker tag [ImageId] registry.cn-hangzhou.aliyuncs.com/sqeven/tomcat:[镜像版本号]
  docker push registry.cn-hangzhou.aliyuncs.com/sqeven/tomcat:[镜像版本号]

  
  
  2018-01-08 18:47:04 回复
• 
  0  

  sqeven (楼主)

  宝塔一键宝
  

  yum install -y wget && wget -O install.sh http://download.bt.cn/install/install.sh && sh install.sh
  wget -O install.sh http://download.bt.cn/install/install-ubuntu.sh && sudo bash install.sh
  /etc/init.d/bt start restart stop
  /etc/init.d/bt stop && chkconfig --del bt && rm -f /etc/init.d/bt && rm -rf /www/server/panel
  cat /www/server/panel/data/port.pl

  
  
  2018-02-07 11:11:25 回复
• 
  0  

  sqeven (楼主)

  {"code":0,"msg":"OK","data":{"subscribe":1,"openid":"oy4hH1s9X6YZC4wCazAG28qf_7J8","nickname":"sqeven","sex":1,"language":"zh_CN","city":"","province":"","country":"\u5229\u6bd4\u4e9a","headimgurl":"http:\/\/thirdwx.qlogo.cn\/mmopen\/PiajxSqBRaEL6kMH6w9tfI0xMhPu68XaaJ9cYBhpibiazLLAJMiattjUqrffQ7XDAQ9wgibNibQVl0Py7XGV4DGSwGSg\/132","subscribe_time":1491538168,"unionid":"oJ_d1w9xOyQwJDxrgrT4_ygyqwFk","remark":"","groupid":100,"tagid_list":[100],"subscribe_scene":"ADD_SCENE_OTHERS","qr_scene":0,"qr_scene_str":""}}

  
  
  2018-05-14 11:58:37 回复
• 
  0  

  sqeven (楼主)

  eyJpZCI6IkxUQUlHU1NSZ0FPb2t6ck4iLCJzZWNyZXQiOiJNZW5hTW16bTdKN3pQUlhWTTVYOVlxZUE3NUh1OVQiLCJkZXNjIjoiaWNhcmVwaG9uZSIsInJlZ2lvbiI6Im9zcy1jbi1zaGVuemhlbiIsIm9zc3BhdGgiOiJvc3M6Ly9za3lkYXRhL21wL25ldy8iLCJlcHRwbCI6Imh0dHBzOi8ve3JlZ2lvbn0uYWxpeXVuY3MuY29tIn0=
  2018-07-12 15:57:42 回复
• 
  0  

  sqeven (楼主)

  1. 显示所有进出链接
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’
  //把所有的进出链接都列出来，Shadowsocks客户端在链接服务器后 本地的IP和端口 是 “进” 的，服务器在接收到Shadowsocks客户端的数据后会去访问指定的网站或IP，而这是 “出”的。这一条命令就是把这 一进一出 的信息都列出来，可以知道客户端用户连接的是哪个 SS端口，还有客户自身的IP和端口。
  2.仅显示链接服务器的用户连接
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’
  //仅显示链接服务器的用户的链接，也就是上面一段话中说的 “进”，这个命令不会吧服务器在访问的网站或IP给列出来，纯粹用来看 Shadowsocks用户的链接信息。
  3.仅显示链接服务器的用户连接数量
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |wc -l
  仅显示链接服务器的用户连接数量，有时候链接 当前服务器的 Shadowsocks用户很多，你只想知道有几个人链接，那就用这一条命令（这个链接数量不是准确的，具体看下面的注意说明）。
  4.仅显示链接服务器的用户连接并写入到文件
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’>>/root/log.txt
  //仅显示链接服务器的用户连接并写入到文件，有时候在ssh上面查看大量文本不是一个好主意，所以保存到某个目录，然后自己去用sftp下载下来看信息是个不错的选择。
   
  5.如果你是多用户版(多个端口)的服务端，那么你可以用下面这个命令显示当前链接服务器的用户的SS端口
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |awk ‘{print $4}’ |sort -u
  //显示当前链接服务器的用户的SS端口，这个命令会去除重复的，最后显示的只有 正在链接SS服务器的用户的SS端口。
  # CentOS6系统用这个，CentOS7用上面那个。
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp’ | grep ‘::ffff:’ |awk ‘{print $4}’ |sort -u
   
  6.显示当前链接服务器的用户的SS端口数量
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |awk ‘{print $4}’ |sort -u |wc -l
  # CentOS6系统用这个，CentOS7用上面那个。
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp’ | grep ‘::ffff:’ |awk ‘{print $4}’ |sort -u |wc -l
  //显示当前链接服务器的用户的SS端口数量，这个就是显示 数量。
  7. 显示当前所有链接SS的用户IP
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |awk ‘{print $5}’ |awk -F “:” ‘{print $1}’ |sort -u
  8.显示当前所有链接SS的用户IP数量
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |awk ‘{print $5}’ |awk -F “:” ‘{print $1}’ |sort -u |wc -l
  注意：你经常会看到 用户IP一样但后面的端口不一样(1.1.1.1:3333、1.1.1.1:6666)，那是因为他的SS客户端开了好几条TCP链接，所以一般情况下还是一个人在使用，但是也不排除路由器局域网情况下多个人同时使用，这时候也是这样显示的。
  ——————————————————————————–
  如果你想单独查看一个SS端口的链接数，那你可以看看下面几条命令。
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |grep VPS_IP:SS_Port
  # 示例 netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |grep 233.233.233.233:10000
  // 列出 当前SS端口连接的链接数。比如：服务器IP是 233.233.233.233 ，然后你想要知道链接数的端口是 10000，命令就是如上的示例。
  netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |grep VPS_IP:SS_Port |wc -l
  # 示例 netstat -anp |grep ‘ESTABLISHED’ |grep ‘python’ |grep ‘tcp6’ |grep 233.233.233.233:10000 |wc -l

  
  
  2018-08-02 11:08:51 回复
• 
  0  

  sqeven (楼主)

  T val = ExprEval ( this->m_pArg, tMatch )
  define USE_LIBICONV 0
  git clone https://github.com/sqeven/soft.git
  tar -xzf coreseek-4.1-beta.tar.gz
  AM_INIT_AUTOMAKE([-Wall foreign])
  yum -y install patch
  patch -p1 < /root/sphinx/soft/sphinxexpr.cpp-csft-4.1-beta.patch
  /root/sphinx/soft/coreseek-4.1-beta/csft-4.1/src/sphinxexpr.cpp
  sh buildconf.sh
  ./configure --prefix=/usr/local/coreseek --without-unixodbc --with-mmseg --with-mmseg-includes=/usr/local/mmseg3/include/mmseg/ --with-mmseg-libs=/usr/local/mmseg3/lib/ --with-mysql
  make && make install
  https://www.cnblogs.com/wangzhilei/p/6711035.html
  cd /usr/local/coreseek/etc
  /usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/sphinx.conf --all
  /usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf --all --rotate
  /usr/local/coreseek/bin/searchd -c /usr/local/coreseek/etc/sphinx.conf
  /usr/local/coreseek/bin/searchd -c /usr/local/coreseek/etc/sphinx.conf --stop
  /usr/local/coreseek/bin/search -c /usr/local/coreseek/etc/sphinx.conf 戚培珍
  cp /usr/local/coreseek/bin/* /usr/bin/
  ##
  /usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf -rotate index_main
  /usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf -rotate index_add
  indexer --config /usr/local/coreseek/etc/csft.conf --merge index_main index_add --merge-dst-range deleted 0 0 -rotate
  /usr/local/coreseek/bin/indexer -c /usr/local/coreseek/etc/csft.conf --rotate --all
  ##
  wget http://git.php.net/?p=pecl/search_engine/sphinx.git;a=snapshot;h=339e123acb0ce7beb2d9d4f9094d6f8bcf15fb54;sf=tgz
  tar zxvf sphinx-339e123.tar.gz
  cd sphinx-339e123
  phpize
  ./configure 
  $sphinx = new SphinxClient();
  $sphinx->SetServer("127.0.0.1",9312);
  $sphinx->SetMatchMode(SPH_MATCH_ALL);
  $sphinx->SetLimits(0, 20, 1000);
  $sphinx->SetArrayResult(true);
  $result = $sphinx -> query("one","test1");
  CREATE TABLE `sph_counter` (
    `counter_id` int(11) NOT NULL COMMENT '标识不同的数据表',
    `max_doc_id` int(11) NOT NULL COMMENT '每个索引表的最大ID,会实时更新',
    PRIMARY KEY (`counter_id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8
  source main_src
  {
      type                    = mysql
      sql_host                = localhost
      sql_user                = seven
      sql_pass                = ********
      sql_db                  = test
      sql_port                = 3306
      sql_sock                = /tmp/mysql.sock
      sql_query_pre           = SET NAMES utf8
      sql_query               = \
          SELECT id, group_id, UNIX_TIMESTAMP(date_added) AS date_added, title, content \
          FROM documents
      sql_attr_uint           = group_id
      sql_attr_timestamp      = date_added
      sql_query_info          = SELECT * FROM documents WHERE id=$id
  }
  index main
  {
      source                  = main_src
      path                    = /data/backup/dbs/data/test1
      docinfo                 = extern
      charset_type            = zh_cn.utf-8
      mlock                   = 0
      morphology              = none
      min_word_len            = 1
      html_strip              = 0
      charset_dictpath        = /usr/local/mmseg3/etc/
      ngram_len               = 0
  }
  indexer
  {
      mem_limit               = 32M
  }
  searchd
  {
      port                    = 29312
      log                     = /usr/local/coreseek/var/log/searchd.log
      query_log               = /usr/local/coreseek/var/log/query.log
      read_timeout            = 5
      max_children            = 30
      pid_file                = /usr/local/coreseek/var/log/searchd.pid
      max_matches             = 1000
      seamless_rotate         = 1
      preopen_indexes         = 0
      unlink_old              = 1
  }

  
  
  2018-09-11 20:29:04 回复
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  sqeven (楼主)

  git clone https://github.com/sqeven/soft.git
  tar -xzf coreseek-4.1-beta.tar.gz
  cd coreseek-4.1-beta/mmseg-3.2.14/
  ./bootstrap
  ./configure --prefix=/usr/local/mmseg3
  make && make install
  cd ../csft-4.1
  vim configure.ac
  AM_INIT_AUTOMAKE([-Wall foreign])
  yum -y install patch
  patch -p1 < /root/seven/soft/sphinxexpr.cpp-csft-4.1-beta.patch
  /root/seven/soft/coreseek-4.1-beta/csft-4.1/src/sphinxexpr.cpp
  sh buildconf.sh
  ./configure --prefix=/usr/local/coreseek --without-unixodbc --with-mmseg --with-mmseg-includes=/usr/local/mmseg3/include/mmseg/ --with-mmseg-libs=/usr/local/mmseg3/lib/ --with-mysql
  make && make install

  
  
  2018-09-12 21:32:09 回复
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  sqeven (楼主)

  -----------------k8s 1.11.3 HA离线安装----------------------
  ## 1，修改主机名/ssh/绑定主机名 免密钥登录
     hostnamectl set-hostname  #注意：主机名，不能用特殊符号(比如：jmsw-xx.hnser.com)，可直接(node1)这种就可以。
     vim /etc/hosts     #绑定主机名
     ##vim .ssh/authorized_keys  #创建免密钥登录 “可不用”
  ## 2, 升级内核
     rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm ;yum --enablerepo=elrepo-kernel install  kernel-lt-devel kernel-lt -y
     #查看默认启动顺序
     [commond:]# awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg
        CentOS Linux (4.4.4-1.el7.elrepo.x86_64) 7 (Core)
        CentOS Linux (3.10.0-327.10.1.el7.x86_64) 7 (Core)
        CentOS Linux (0-rescue-c52097a1078c403da03b8eddeac5080b) 7 (Core)
     #默认启动的顺序是从0开始，新内核是从头插入（目前位置在0，而4.4.4的是在1），所以需要选择0。
     [commond:]# grub2-set-default 0
     #重启
     [commond:]# reboot
     #检查内核，成功升级到4.4
     [commond:]# uname -a
        Linux bigdata5 4.4.104-1.el7.elrepo.x86_64 #1 SMP Tue Dec 5 12:46:32 EST 2017 x86_64 x86_64 x86_64 GNU/Linux
  ## 3，虚拟机修改网卡名  ----如果是eth0 名就不需要修改(注意：可不用执行此步骤)
  ## 编辑/etc/default/grub文件内容，增加“net.ifnames=0 biosdevname=0”
  GRUB_CMDLINE_LINUX="crashkernel=auto net.ifnames=0 biosdevname=0 rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
  grub2-mkconfig -o /boot/grub2/grub.cfg
  mv /etc/sysconfig/network-scripts/ifcfg-ens33  /etc/sysconfig/network-scripts/ifcfg-eth0
  sed -i "s/ens33/eth0/g" /etc/sysconfig/network-scripts/ifcfg-eth0
  cat /etc/sysconfig/network-scripts/ifcfg-eth0
  reboot
  ## 4，执行优化脚本/拷贝相关文件都执行服务器
  ### 把已经下载好的kube1.11.3.tar.gz 版本/脚本init.sh /配置文件keepalived.conf check_haproxy.sh ---》拷贝到服务器的相关目录下
     cd ~
     sh init.sh
     reboot
     curl https://quay.io
     cp keepalived.conf check_haproxy.sh /etc/keepalived   ---》#覆盖自带的
     systemctl enable keepalived && systemctl start keepalived && systemctl status keepalived
  ## 5，安装 docker (所有server)
  ### https://docs.docker.com/install/linux/docker-ce/centos/#install-docker-ce-1  官网install
  # 安装 yum-config-manager
      yum install -y yum-utils device-mapper-persistent-data lvm2 yum-plugin-ovl
  # 导入
     yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
  # 更新 repo
     yum makecache && yum list docker-ce.x86_64  --showduplicates |sort -r
     yum install -y docker-ce      #18.03版本默认 文件系统为ovelay2驱动
     systemctl enable docker && systemctl start docker && systemctl status docker
  ## 6，拉取镜像/进入容器
     docker run --rm -v /data/kube1.11.3.tar.gz:/data/kube1.11.3.tar.gz -it -w /etc/ansible fanux/sealos:latest bash
  ## 7，在容器里---》创建免密钥登录/将密钥拷贝到各安装服务器上
     mkdir ~/.ssh
     cd ~/.ssh
     ssh-keygen -t rsa
     cat ~/.ssh/id_rsa.pub
  ## 8，在容器里---》修改的ansible/hosts文件/把IP、name、VIP换成自己服务器的/1.11.1改成1.11.3
     cd /etc/ansible/
     vi hosts
  ## 9，在容器里---》执行install 等待结果.....
     ansible-playbook roles/install-all.yaml
  ## 10，在容器里---》install 失败执行
     ansible-playbook roles/uninstall-all.yaml
     kubeadm reset
     rm -rf ~/.kube/ && rm -rf /etc/kubernetes/ && rm -rf /etc/systemd/system/kubelet.service.d && rm -rf /etc/systemd/system/kubelet.service && rm -rf /usr/bin/kube*
     rm -rf /etc/cni && rm -rf /opt/cni && rm -rf /var/lib/etcd && rm -rf /var/etcd
  ## 11，验证dashboard/监控平台
     https://server_ip:32000
     http://server_ip:32001
  ## 12，如果需要节点执行kubectl get 相关命令
     把 master 文件拷贝到各节点
     scp -r .kube 192.168.xxx:/root
  #注意：
     节点报错：file_linux.go:61] Unable to read config path "/etc/kubernetes/manifests": path does not exist, ignoring
     解决办法：mkdir -p /etc/kubernetes/manifests
     重启命令：
     swapoff -a&& setenforce 0&&systemctl start kubelet
     etcdctl cluster-healthy
  #coreDNS默认安装

  
  
  2018-09-20 11:43:24 回复
• 
  0  

  sqeven (楼主)

  npm install -g commitizen conventional-changelog conventional-changelog-cli cz-customizable
  echo '{ "path": "cz-customizable" }' > ~/.czrc
  wget https://raw.githubusercontent.com/nielsgl/conventional-changelog-emoji/master/.cz-config.js -O ~/.cz-config.js

  
  
  2019-09-10 15:43:40 回复
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  sqeven (楼主)

  goproxy.io
  goproxy.cn 
  athens.azurefd.net
  mirrors.aliyun.com/goproxy/

  
  
  2019-09-23 10:51:49 回复
• 
  0  

  sqeven (楼主)

  docker exec -it elk bash -c "rm -rf /opt/logstash/shop && rm -rf /var/tmp/shop*" && curl -XDELETE 'http://localhost:9200/shop'

  
  
  2019-09-24 11:22:26 回复
• 
  0  

  sqeven (楼主)

  PYTHON_CONFIGURE_OPTS="--enable-framework" pyenv install 3.7.4

  
  
  2019-09-29 14:04:47 回复
• 
  0  

  sqeven (楼主)

  02006323131
  AJFMUEDC

  
  
  2019-10-09 21:29:11 回复
• 
  0  

  sqeven (楼主)

  http-snippet: |
      split_clients "$date_gmt" $mirror_servers {
         50%    dev.icarephone.com;
         50%    test.icarephone.com;
      }

  
  
  2019-10-09 22:10:32 回复
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  0  

  sqeven (楼主)

  serveo -private_key_path=$HOME/.ssh/id_rsa -port=2222 -http_port=8080 -https_port=18443 -domain=skydaq.cn

  
  
  2019-10-12 15:25:43 回复
• 
  0  

  sqeven (楼主)

  ssh -R sqeven:80:localhost:5000 skydaq.cn

  
  
  2019-10-12 15:47:28 回复
• 
  0  

  sqeven (楼主)

  defaults write com.apple.systempreferences AttentionPrefBundleIDs 0

  
  
  2019-10-12 17:12:57 回复
• 
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  sqeven (楼主)

  https://octoverse.github.com/

  
  
  2019-11-13 16:55:39 回复
• 
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  sqeven (楼主)

  https://github.com/jackfrued/Python-100-Days
  2019-11-14 16:06:56 回复
• 
  0  

  sqeven (楼主)

  https://github.com/uiwjs/province-city-china
  2019-12-10 10:11:00 回复
• 
  0  

  sqeven (楼主)

  当你的才华还撑不起你的野心的时候，你就应该静下心来学习。当你的能力还驾驭不了你的目标的时候，你就应该沉下心来历练。问问自己，想要怎样的人生。
  2019-12-10 14:12:53 回复
• 
  0  

  sqeven (楼主)

  https://github.com/emirpasic/gods
  2020-02-17 16:33:51 回复
• 
  0  

  sqeven (楼主)

  https://hub.docker.com/r/frolvlad/alpine-gxx
  2020-04-02 17:39:15 回复
• 
  0  

  sqeven (楼主)

  https://blog.csdn.net/qq_40190624/article/details/103726581
  2020-05-09 18:16:21 回复
• 
  0  

  sqeven (楼主)

  https://zhuanlan.zhihu.com/p/112627134
  2020-05-14 10:38:37 回复
• 
  0  

  sqeven (楼主)

  https://www.zhihu.com/question/371831330/answer/1093868286
  2020-05-14 10:53:11 回复
• 
  0  

  sqeven (楼主)

  https://github.com/Dreamacro/clash
  2020-06-10 17:01:51 回复
• 
  0  

  sqeven (楼主)

  https://github.com/Hackl0us/SS-Rule-Snippet
  2020-06-10 17:02:01 回复
• 
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  sqeven (楼主)

  alias proxy="export ALL_PROXY=socks5://127.0.0.1:7891"
  alias unproxy="unset ALL_PROXY"
  alias ip="curl ip.sb"
  2020-06-11 09:12:03 回复
• 
  0  

  sqeven (楼主)

  https://www.cnblogs.com/wwgk/
  2020-06-29 10:27:40 回复
• 
  0  

  sqeven (楼主)

  setopt no_nomatch
  2020-07-13 16:34:23 回复
• 
  0  

  sqeven (楼主)

  yum install mysql-devel gcc gcc-devel python-devel postgresql-devel
  2020-07-13 17:18:15 回复
• 
  0  

  sqeven (楼主)

  git commit --amend --no-edit --date="Wed Aug 28 13:14:00 2019 +0800"
  2020-07-18 10:01:17 回复
• 
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  sqeven (楼主)

  https://opensource.actionsky.com/20190917-mysql/
  2020-07-21 18:11:26 回复
• 
  0  

  sqeven (楼主)

  https://chai2010.cn/advanced-go-programming-book/
  2020-09-18 16:28:56 回复