Add scripts to verify anchors in CI (#3128)

.circleci/config.yml

@@ -3,15 +3,23 @@ version: 2
 jobs:
   lint:
     docker:
-      - image: circleci/ruby:2.4.1-node
+      - image: circleci/node:lts
     working_directory: ~/pingcap/docs
     steps:
       - checkout
 
+      - run:
+          name: Setup
+          command: |
+            mkdir ~/.npm-global
+            npm config set prefix '~/.npm-global'
+            echo 'export PATH=~/.npm-global/bin:$PATH' >> $BASH_ENV
+            echo 'export NODE_PATH=~/.npm-global/lib/node_modules:$NODE_PATH' >> $BASH_ENV
+
       - run:
           name: "Install markdownlint"
           command: |
-            sudo npm install -g markdownlint-cli@0.17.0
+            npm install -g markdownlint-cli@0.17.0
 
       - run:
           name: "Lint README"
@@ -29,6 +37,11 @@ jobs:
          command: |
            scripts/verify-links.sh
 
+      - run:
+         name: "Check link anchors"
+         command: |
+           scripts/verify-link-anchors.sh
+
   build:
     docker:
       - image: andelf/doc-build:0.1.9

certificate-authentication.md

@@ -267,7 +267,7 @@ First, connect TiDB using the client to configure the login verification. Then,
 
 The user certificate information can be specified by `require subject`, `require issuer`, and `require cipher`, which are used to check the X509 certificate attributes.
 
-+ `require subject`: Specifies the `subject` information of the client certificate when you log in. With this option specified, you do not need to configure `require ssl` or x509. The information to be specified is consistent with the entered `subject` information in [Generate client keys and certificates](#generate-client-keys-and-certificates).
++ `require subject`: Specifies the `subject` information of the client certificate when you log in. With this option specified, you do not need to configure `require ssl` or x509. The information to be specified is consistent with the entered `subject` information in [Generate client keys and certificates](#generate-client-key-and-certificate).
 
     To get this option, execute the following command:
 
@@ -483,4 +483,4 @@ Also replace the old CA certificate with the combined certificate so that the cl
     sudo openssl x509 -req -in server-req.new.pem -days 365000 -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 -out server-cert.new.pem
     ```
 
-3. Configure the TiDB server to use the new server key and certificate. See [Configure TiDB server](#configure-tidb-server) for details.
+3. Configure the TiDB server to use the new server key and certificate. See [Configure TiDB server](#configure-tidb-and-the-client-to-use-certificates) for details.

glossary.md

@@ -13,7 +13,7 @@ aliases: ['/docs/v3.0/glossary/']
 
 ACID refers to the four key properties of a transaction: atomicity, consistency, isolation, and durability. Each of these properties is described below.
 
-- **Atomicity** means that either all the changes of an operation are performed, or none of them are. TiDB ensures the atomicity of the [Region](#region) that stores the Primary Key to achieve the atomicity of transactions.
+- **Atomicity** means that either all the changes of an operation are performed, or none of them are. TiDB ensures the atomicity of the [Region](#regionpeerraft-group) that stores the Primary Key to achieve the atomicity of transactions.
 
 - **Consistency** means that transactions always bring the database from one consistent state to another. In TiDB, data consistency is ensured before writing data to the memory.
 

optimistic-transaction.md

@@ -63,7 +63,7 @@ However, TiDB transactions also have the following disadvantages:
 * In need of a centralized version manager
 * OOM (out of memory) when extensive data is written in the memory
 
-To avoid potential problems in application, refer to [transaction sizes](/transaction-overview.md#transaction-size) to see more details.
+To avoid potential problems in application, refer to [transaction sizes](/transaction-overview.md#transaction-sizes) to see more details.
 
 ## Transaction retries
 

pessimistic-transaction.md

@@ -33,7 +33,7 @@ To disable the pessimistic transaction mode, modify the configuration file and a
 
 ## Behaviors
 
-Pessimistic transactions in TiDB behave similarly to those in MySQL. See the minor differences in [Difference with MySQL InnoDB](#difference-with-mysql-innoDB).
+Pessimistic transactions in TiDB behave similarly to those in MySQL. See the minor differences in [Difference with MySQL InnoDB](#difference-with-mysql-innodb).
 
 - When you perform the `SELECT FOR UPDATE` statement, transactions read the last committed data and apply a pessimistic lock on the data being read.
 

scripts/verify-link-anchors.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+#
+# In addition to verify-links.sh, this script additionally check anchors.
+#
+# See https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally if you meet permission problems when executing npm install.
+
+ROOT=$(unset CDPATH && cd $(dirname "${BASH_SOURCE[0]}")/.. && pwd)
+cd $ROOT
+
+npm install -g remark-cli remark-lint breeswish/remark-lint-pingcap-docs-anchor
+
+echo "info: checking links anchors under $ROOT directory..."
+
+remark --ignore-path .gitignore -u lint -u remark-lint-pingcap-docs-anchor . --frail --quiet

scripts/verify-links.sh

@@ -10,13 +10,12 @@
 # - When a file was moved, all other references are required to be updated for now, even if alias are given
 #   - This is recommended because of less redirects and better anchors support.
 #
+# See https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally if you meet permission problems when executing npm install.
 
 ROOT=$(unset CDPATH && cd $(dirname "${BASH_SOURCE[0]}")/.. && pwd)
 cd $ROOT
 
-if ! which markdown-link-check &>/dev/null; then
-    sudo npm install -g markdown-link-check@3.7.3
-fi
+npm install -g markdown-link-check@3.8.1
 
 VERBOSE=${VERBOSE:-}
 CONFIG_TMP=$(mktemp)
@@ -50,7 +49,7 @@ fi
 while read -r tasks; do
     for task in $tasks; do
         (
-            output=$(markdown-link-check --color --config "$CONFIG_TMP" "$task" -q)
+            output=$(markdown-link-check --config "$CONFIG_TMP" "$task" -q)
             if [ $? -ne 0 ]; then
                 printf "$output" >> $ERROR_REPORT
             fi

sql-statements/sql-statement-recover-table.md

@@ -45,7 +45,7 @@ When you use `RECOVER TABLE` in the upstream TiDB during TiDB Binlog replication
 
 + Latency occurs during replication between upstream and downstream databases. An error instance: `snapshot is older than GC safe point 2019-07-10 13:45:57 +0800 CST`.
 
-For the above three situations, you can resume data replication from TiDB Binlog with a [full import of the deleted table](/ecosystem-tool-user-guide.md#full-backup-and-restore-of-tidb-cluster-data-1).
+For the above three situations, you can resume data replication from TiDB Binlog with a [full import of the deleted table](/ecosystem-tool-user-guide.md#backup-and-restore).
 
 ## Examples
 

tidb-binlog/handle-tidb-binlog-errors.md

@@ -33,4 +33,4 @@ Solution: Clean up the disk space and then restart Pump.
 
 Cause: When Pump is started, it notifies all Drainer nodes that are in the `online` state. If it fails to notify Drainer, this error log is printed.
 
-Solution: Use the [binlogctl tool](/tidb-binlog/maintain-tidb-binlog-cluster.md#binlog-guide) to check whether each Drainer node is normal or not. This is to ensure that all Drainer nodes that are in the `online` state are working normally. If the state of a Drainer node is not consistent with its actual working status, use the binlogctl tool to change its state and then restart Pump.
+Solution: Use the [binlogctl tool](/tidb-binlog/maintain-tidb-binlog-cluster.md#binlogctl-guide) to check whether each Drainer node is normal or not. This is to ensure that all Drainer nodes that are in the `online` state are working normally. If the state of a Drainer node is not consistent with its actual working status, use the binlogctl tool to change its state and then restart Pump.

tidb-lightning/deploy-tidb-lightning.md

@@ -97,7 +97,7 @@ If the data source consists of CSV files, see [CSV support](/tidb-lightning/migr
 
 This section describes two deployment methods of TiDB Lightning:
 
-- [Deploy TiDB Lightning using TiDB Ansible](#deploy-tidb-lightning-using-ansible)
+- [Deploy TiDB Lightning using TiDB Ansible](#deploy-tidb-lightning-using-tidb-ansible)
 - [Deploy TiDB Lightning manually](#deploy-tidb-lightning-manually)
 
 ### Deploy TiDB Lightning using TiDB Ansible

tidb-lightning/tidb-lightning-faq.md

@@ -61,7 +61,7 @@ If `tikv-importer` needs to be restarted:
 4. Start `tikv-importer`.
 5. Start `tidb-lightning` *and wait until the program fails with CHECKSUM error, if any*.
     * Restarting `tikv-importer` would destroy all engine files still being written, but `tidb-lightning` did not know about it. As of v3.0 the simplest way is to let `tidb-lightning` go on and retry.
-6. [Destroy the failed tables and checkpoints](/troubleshoot-tidb-lightning.md#checkpoint-for-has-invalid-status)
+6. [Destroy the failed tables and checkpoints](/troubleshoot-tidb-lightning.md#checkpoint-for--has-invalid-status-error-code)
 7. Start `tidb-lightning` again.
 
 ## How to ensure the integrity of the imported data?

tune-operating-system.md

@@ -61,7 +61,7 @@ cpufreq is a module that dynamically adjusts the CPU frequency. It supports five
 
 ### NUMA CPU binding
 
-To avoid accessing memory across Non-Uniform Memory Access (NUMA) nodes as much as possible, you can bind a thread/process to certain CPU cores by setting the CPU affinity of the thread. For ordinary programs, you can use the `numactl` command for the CPU binding. For detailed usage, see the Linux manual pages. For network interface card (NIC) interrupts, see [tune network](#tune-network).
+To avoid accessing memory across Non-Uniform Memory Access (NUMA) nodes as much as possible, you can bind a thread/process to certain CPU cores by setting the CPU affinity of the thread. For ordinary programs, you can use the `numactl` command for the CPU binding. For detailed usage, see the Linux manual pages. For network interface card (NIC) interrupts, see [tune network](#network-tuning).
 
 ### Memory—transparent huge page (THP)