added colored strace

2 files changed, 123 insertions, 0 deletions

diff --git a/bin/scotch b/bin/scotch
new file mode 100755
index 0000000..1da5962
--- /dev/null
+++ b/bin/scotch
@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import sys
+import subprocess
+
+
+class Color:
+    bold = "\033[1m"
+    faint = "\033[2m"
+    italic = "\033[3m"
+    underline = "\033[4m"
+    blink = "\033[5m"
+    negative = "\033[7m"
+    crossed = "\033[9m"
+    reset = "\033[0m"
+    one = "\x1b[38;5;216m"
+    two = "\x1b[38;5;192m"
+    three = "\x1b[38;5;22m"
+    four = "\x1b[38;5;25m"
+    five = "\x1b[38;5;98m"
+    six = "\x1b[38;5;68m"
+    seven = "\x1b[38;5;59m"
+    eight = "\x1b[38;5;36m"
+    nine = "\x1b[38;5;202m"
+    ten = "\x1b[38;5;100m"
+    eleven = "\x1b[38;5;105m"
+    twelve = "\x1b[38;5;106m"
+    thirteen = "\x1b[38;5;96m"
+    fourteen = "\x1b[38;5;31m"
+    fifteen = "\x1b[38;5;23m"
+    sixteen = "\x1b[38;5;105m"
+
+
+def call_from_shell_list(command_list):
+    if sys.version_info < (3, 7):
+        return subprocess.run(command_list, stdout=subprocess.PIPE)
+    else:
+        return subprocess.run(command_list, capture_output=True)
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("you want to run something right?\nright?")
+        sys.exit(1)
+
+    args = sys.argv[1:]
+    args.insert(0, "strace")
+    result = call_from_shell_list(args)
+    lines = result.stderr.decode("utf-8").split("\n")
+    end_line = lines[-2]
+    lines = lines[:-2]
+    for line in lines:
+        syscall = line[0 : line.find("(")]
+        sysargs = line[line.find("(") + 1 : line.find(")")].split()
+        exitvalue = line[line.find(")") + 1 :]
+        print(Color.one + syscall, end=" ")
+        print(Color.two, end=" ")
+        for arg in sysargs:
+            if arg.find("|") > 0:
+                print(Color.five, arg, end=" ")
+            else:
+                print(arg, end=" ")
+        print(Color.three + exitvalue + Color.reset)
+    print(Color.reset + Color.bold + Color.nine + end_line + Color.reset)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/kubernetes/mongodb/add-user.yaml b/kubernetes/mongodb/add-user.yaml
new file mode 100644
index 0000000..df68d31
--- /dev/null
+++ b/kubernetes/mongodb/add-user.yaml
@@ -0,0 +1,54 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: mongodb-standalone
+data:
+  ensure-users.js: |
+    const targetDbStr = 'training';
+    const rootUser = cat('/etc/k8-training/admin/MONGO_ROOT_USERNAME');
+    const rootPass = cat('/etc/k8-training/admin/MONGO_ROOT_PASSWORD');
+    const usersStr = cat('/etc/k8-training/MONGO_USERS_LIST');
+    // auth against admin
+    const adminDb = db.getSiblingDB('admin');
+    adminDb.auth(rootUser, rootPass);
+    print('Successfully authenticated admin user');
+    // we'll create the users here
+    const targetDb = db.getSiblingDB(targetDbStr);
+    // user-defined roles should be stored in the admin db
+    const customRoles = adminDb
+      .getRoles({rolesInfo: 1, showBuiltinRoles: false})
+      .map(role => role.role)
+      .filter(Boolean);
+    // parse the list of users, and create each user as needed
+    usersStr
+      .trim()
+      .split(';')
+      .map(s => s.split(':'))
+      .forEach(user => {
+        const username = user[0];
+        const rolesStr = user[1];
+        const password = user[2];
+        if (!rolesStr || !password) {
+          return;
+        }
+        const roles = rolesStr.split(',');
+        const userDoc = {
+          user: username,
+          pwd: password,
+        };
+        userDoc.roles = roles.map(role => {
+          if (!~customRoles.indexOf(role)) {
+            // is this a user defined role?
+            return role; // no, it is built-in, just use the role name
+          }
+          return {role: role, db: 'admin'}; // yes, user-defined, specify the long format
+        });
+        try {
+          targetDb.createUser(userDoc);
+        } catch (err) {
+          if (!~err.message.toLowerCase().indexOf('duplicate')) {
+            // if not a duplicate user
+            throw err; // rethrow
+          }
+        }
+      });